From cc1277d491979d01cd47072f2ceb099636ca2254 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Mon, 15 Mar 2021 11:29:42 +0800
Subject: [libc][time] 修复没有末尾\0的bug
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index ed72cc1f3f..3ffc6381fc 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -16,6 +16,7 @@
  * 2012-12-08     Bernard      <clock_time.c> fix the issue of _timevalue.tv_usec initialization,
  *                             which found by Rob <rdent@iinet.net.au>
  * 2021-02-12     Meco Man     move all of the functions located in <clock_time.c> to this file
+ * 2021-03-15     Meco Man     fixed bug: https://club.rt-thread.org/ask/question/423650.html
  */
 
 #include <sys/time.h>
@@ -152,13 +153,14 @@ char* asctime_r(const struct tm *t, char *buf)
     num2str(buf + 20, (t->tm_year + 1900) / 100);
     num2str(buf + 22, (t->tm_year + 1900) % 100);
     buf[24] = '\n';
+    buf[25] = '\0';
     return buf;
 }
 RTM_EXPORT(asctime_r);
 
 char* asctime(const struct tm *timeptr)
 {
-    static char buf[25];
+    static char buf[26];
     return asctime_r(timeptr, buf);
 }
 RTM_EXPORT(asctime);
-- 
cgit v1.3.1


From 1b68098f0830ac8c0ebbf69c71e07f12c49ec03a Mon Sep 17 00:00:00 2001
From: tangyuxin <462747508@qq.com>
Date: Tue, 16 Mar 2021 14:07:36 +0800
Subject: [libc] Fix Win32 compilation errors

---
 components/libc/compilers/common/sys/time.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
index 67ef1d2faa..2a40b7b805 100644
--- a/components/libc/compilers/common/sys/time.h
+++ b/components/libc/compilers/common/sys/time.h
@@ -32,13 +32,15 @@ extern "C" {
  * Structure returned by gettimeofday(2) system call,
  * and used in other calls.
  */
+#if !(defined(_WIN32))
 struct timeval {
     long    tv_sec;     /* seconds */
     long    tv_usec;    /* and microseconds */
 };
+#endif
 #endif /* _TIMEVAL_DEFINED */
 
-#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)) && !defined (__ICCARM__)
+#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)) && !defined (__ICCARM__) && !defined (_WIN32)
 struct timespec {
     time_t  tv_sec;     /* seconds */
     long    tv_nsec;    /* and nanoseconds */
-- 
cgit v1.3.1


From 9d17aa7ce5a5c110ba7fdcd8f02ebfc34c021ce1 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Wed, 17 Mar 2021 02:37:42 +0800
Subject: [libc][ioctl] 将sys/ioctl.h移至common文件夹
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/armlibc/sys/ioctl.h | 15 ---------------
 components/libc/compilers/common/sys/ioctl.h  | 15 +++++++++++++++
 2 files changed, 15 insertions(+), 15 deletions(-)
 delete mode 100644 components/libc/compilers/armlibc/sys/ioctl.h
 create mode 100644 components/libc/compilers/common/sys/ioctl.h

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/armlibc/sys/ioctl.h b/components/libc/compilers/armlibc/sys/ioctl.h
deleted file mode 100644
index df17b19a61..0000000000
--- a/components/libc/compilers/armlibc/sys/ioctl.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-01     Meco Man     First Version
- */
-#ifndef _SYS_IOCTL_H
-#define _SYS_IOCTL_H
-
-
-
-#endif
diff --git a/components/libc/compilers/common/sys/ioctl.h b/components/libc/compilers/common/sys/ioctl.h
new file mode 100644
index 0000000000..df17b19a61
--- /dev/null
+++ b/components/libc/compilers/common/sys/ioctl.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-01     Meco Man     First Version
+ */
+#ifndef _SYS_IOCTL_H
+#define _SYS_IOCTL_H
+
+
+
+#endif
-- 
cgit v1.3.1


From 0ec2a5f78222a22a242f730ad9b45b763604bae4 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Fri, 26 Mar 2021 17:36:43 +0800
Subject: [libc][time] add LOG_W to give a warning when RTC device is not used

---
 components/libc/compilers/common/time.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 083ae9be6c..286a173347 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -21,6 +21,7 @@
 
 #include <sys/time.h>
 #include <rtthread.h>
+#include <rtdbg.h>
 #ifdef RT_USING_DEVICE
 #include <rtdevice.h>
 #endif
@@ -219,6 +220,7 @@ RT_WEAK time_t time(time_t *t)
 
     if(time_now == (time_t)-1)
     {
+        LOG_W("Cannot find a RTC device to provide time!");
         errno = ENOSYS;
     }
 
@@ -246,12 +248,13 @@ int stime(const time_t *t)
     }
     else
     {
+        LOG_W("Cannot find a RTC device to provide time!");
         errno = ENOSYS;
         return -1;
     }
     return 0;
-
 #else
+    LOG_W("Cannot find a RTC device to provide time!");
     errno = ENOSYS;
     return -1;
 #endif /* RT_USING_RTC */
-- 
cgit v1.3.1


From a584b8ba6b6f137480e47eead44d40938e8e6774 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 28 Mar 2021 10:32:20 +0800
Subject: [libc][time] add debug tag

---
 components/libc/compilers/common/time.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 286a173347..83b6ed5672 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -21,11 +21,15 @@
 
 #include <sys/time.h>
 #include <rtthread.h>
-#include <rtdbg.h>
+
 #ifdef RT_USING_DEVICE
 #include <rtdevice.h>
 #endif
 
+#define DBG_TAG    "TIME"
+#define DBG_LVL    DBG_INFO
+#include <rtdbg.h>
+
 /* seconds per day */
 #define SPD 24*60*60
 
-- 
cgit v1.3.1


From b4040df9dca12574c7cc8fd37a655e811d1337da Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 11 Apr 2021 13:31:11 +0800
Subject: [libc][time][bug] LOG_W will cause a recursive printing if ulog
 timestamp function is turned on

---
 components/libc/compilers/common/time.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 83b6ed5672..72aa8a42f4 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -224,7 +224,8 @@ RT_WEAK time_t time(time_t *t)
 
     if(time_now == (time_t)-1)
     {
-        LOG_W("Cannot find a RTC device to provide time!");
+        /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
+        rt_kprintf("Cannot find a RTC device to provide time!\r\n");
         errno = ENOSYS;
     }
 
-- 
cgit v1.3.1


From 76be91c7dec45bd33e149bb059880caf2f838934 Mon Sep 17 00:00:00 2001
From: armink <armink.ztl@gmail.com>
Date: Wed, 14 Apr 2021 20:10:47 +0800
Subject: [libc/time] Add microseconds time get feature in gettimeofday.

---
 components/libc/compilers/common/time.c | 59 +++++++++++++++++++--------------
 1 file changed, 34 insertions(+), 25 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 72aa8a42f4..dcfc4b9776 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -120,7 +120,7 @@ struct tm* localtime_r(const time_t* t, struct tm* r)
     time_t local_tz;
     int utc_plus;
 
-    utc_plus = 0; /* GTM: UTC+0 */
+    utc_plus = 8; /* GMT: UTC+8 */
     local_tz = *t + utc_plus * 3600;
     return gmtime_r(&local_tz, r);
 }
@@ -183,18 +183,14 @@ char* ctime(const time_t *tim_p)
 }
 RTM_EXPORT(ctime);
 
-/**
- * Returns the current time.
- *
- * @param time_t * t the timestamp pointer, if not used, keep NULL.
- *
- * @return The value ((time_t)-1) is returned if the calendar time is not available.
- *         If timer is not a NULL pointer, the return value is also stored in timer.
- *
- */
-RT_WEAK time_t time(time_t *t)
+static void get_timeval(struct timeval *tv)
 {
-    time_t time_now = ((time_t)-1); /* default is not available */
+    if (tv == RT_NULL)
+        return;
+    /* default is not available */
+    tv->tv_sec = -1;
+    /* default is 0 */
+    tv->tv_usec = 0;
 
 #ifdef RT_USING_RTC
     static rt_device_t device = RT_NULL;
@@ -210,26 +206,41 @@ RT_WEAK time_t time(time_t *t)
     {
         if (rt_device_open(device, 0) == RT_EOK)
         {
-            rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time_now);
+            rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &tv->tv_sec);
+            rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME_US, &tv->tv_usec);
             rt_device_close(device);
         }
     }
 #endif /* RT_USING_RTC */
 
-    /* if t is not NULL, write timestamp to *t */
-    if (t != RT_NULL)
-    {
-        *t = time_now;
-    }
-
-    if(time_now == (time_t)-1)
+    if (tv->tv_sec == (time_t) -1)
     {
         /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
         rt_kprintf("Cannot find a RTC device to provide time!\r\n");
         errno = ENOSYS;
     }
+}
 
-    return time_now;
+/**
+ * Returns the current time.
+ *
+ * @param time_t * t the timestamp pointer, if not used, keep NULL.
+ *
+ * @return The value ((time_t)-1) is returned if the calendar time is not available.
+ *         If timer is not a NULL pointer, the return value is also stored in timer.
+ *
+ */
+RT_WEAK time_t time(time_t *t)
+{
+    struct timeval now;
+
+    get_timeval(&now);
+
+    if (t)
+    {
+        *t = now.tv_sec;
+    }
+    return now.tv_sec;
 }
 RTM_EXPORT(time);
 
@@ -344,12 +355,10 @@ RTM_EXPORT(timegm);
 /* TODO: timezone */
 int gettimeofday(struct timeval *tv, struct timezone *tz)
 {
-    time_t t = time(RT_NULL);
+    get_timeval(tv);
 
-    if (tv != RT_NULL && t != (time_t)-1)
+    if (tv != RT_NULL && tv->tv_sec != (time_t) -1)
     {
-        tv->tv_sec = t;
-        tv->tv_usec = 0;
         return 0;
     }
     else
-- 
cgit v1.3.1


From 4accfc410c34147f48e9d8cca486c8b0a2f51aeb Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Thu, 15 Apr 2021 00:57:01 +0800
Subject: 修改get_timeval的错误返回形式
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c | 49 ++++++++++++++++++++++-----------
 1 file changed, 33 insertions(+), 16 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index dcfc4b9776..c2a3c8fcbf 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -183,10 +183,12 @@ char* ctime(const time_t *tim_p)
 }
 RTM_EXPORT(ctime);
 
-static void get_timeval(struct timeval *tv)
+/*-1 failure; 1 success*/
+static int get_timeval(struct timeval *tv)
 {
     if (tv == RT_NULL)
-        return;
+        return -1;
+
     /* default is not available */
     tv->tv_sec = -1;
     /* default is 0 */
@@ -217,8 +219,11 @@ static void get_timeval(struct timeval *tv)
     {
         /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
         rt_kprintf("Cannot find a RTC device to provide time!\r\n");
-        errno = ENOSYS;
+        tv->tv_sec = 0;
+        return -1;
     }
+
+    return 1;
 }
 
 /**
@@ -234,13 +239,19 @@ RT_WEAK time_t time(time_t *t)
 {
     struct timeval now;
 
-    get_timeval(&now);
-
-    if (t)
+    if(get_timeval(&now)>0)
     {
-        *t = now.tv_sec;
+        if (t)
+        {
+            *t = now.tv_sec;
+        }
+        return now.tv_sec;
+    }
+    else
+    {
+        errno = EFAULT;
+        return -1;
     }
-    return now.tv_sec;
 }
 RTM_EXPORT(time);
 
@@ -265,13 +276,13 @@ int stime(const time_t *t)
     else
     {
         LOG_W("Cannot find a RTC device to provide time!");
-        errno = ENOSYS;
+        errno = EFAULT;
         return -1;
     }
     return 0;
 #else
     LOG_W("Cannot find a RTC device to provide time!");
-    errno = ENOSYS;
+    errno = EFAULT;
     return -1;
 #endif /* RT_USING_RTC */
 }
@@ -355,15 +366,13 @@ RTM_EXPORT(timegm);
 /* TODO: timezone */
 int gettimeofday(struct timeval *tv, struct timezone *tz)
 {
-    get_timeval(tv);
-
-    if (tv != RT_NULL && tv->tv_sec != (time_t) -1)
+    if (tv != RT_NULL && get_timeval(tv)>0)
     {
         return 0;
     }
     else
     {
-        errno = ENOSYS;
+        errno = EFAULT;
         return -1;
     }
 }
@@ -374,11 +383,19 @@ int settimeofday(const struct timeval *tv, const struct timezone *tz)
 {
     if (tv != RT_NULL)
     {
-        return stime((const time_t *)&tv->tv_sec);
+        if(tv->tv_sec >= 0 && tv->tv_usec >= 0)
+        {
+            return stime((const time_t *)&tv->tv_sec);
+        }
+        else
+        {
+            errno = EINVAL;
+            return -1;
+        }
     }
     else
     {
-        errno = ENOSYS;
+        errno = EFAULT;
         return -1;
     }
 }
-- 
cgit v1.3.1


From 8e2a456d7a1ffff4a35ba9f4c5a199eac14e132e Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Thu, 15 Apr 2021 14:01:55 +0800
Subject: implement set_timeval

---
 components/libc/compilers/common/sys/time.h |   5 +-
 components/libc/compilers/common/time.c     | 179 ++++++++++++++++++----------
 include/rtdef.h                             |   8 +-
 3 files changed, 127 insertions(+), 65 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
index 2a40b7b805..ef1c810608 100644
--- a/components/libc/compilers/common/sys/time.h
+++ b/components/libc/compilers/common/sys/time.h
@@ -40,7 +40,7 @@ struct timeval {
 #endif
 #endif /* _TIMEVAL_DEFINED */
 
-#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)) && !defined (__ICCARM__) && !defined (_WIN32)
+#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && !defined (__ICCARM__) && !defined (_WIN32)
 struct timespec {
     time_t  tv_sec;     /* seconds */
     long    tv_nsec;    /* and nanoseconds */
@@ -56,6 +56,9 @@ int stime(const time_t *t);
 time_t timegm(struct tm * const t);
 int gettimeofday(struct timeval *tv, struct timezone *tz);
 int settimeofday(const struct timeval *tv, const struct timezone *tz);
+#if defined(__ARMCC_VERSION) || defined (__ICCARM__)
+struct tm *gmtime_r(const time_t *timep, struct tm *r);
+#endif
 
 #ifdef RT_USING_POSIX
 #include <sys/types.h>
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index c2a3c8fcbf..75adb817da 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -68,6 +68,104 @@ static void num2str(char *c, int i)
     c[1] = i % 10 + '0';
 }
 
+/**
+ * Get time from RTC device (without timezone)
+ * @param tv: struct timeval
+ * @return -1 failure; 1 success
+ */
+static int get_timeval(struct timeval *tv)
+{
+#ifdef RT_USING_RTC
+    static rt_device_t device = RT_NULL;
+#endif
+    rt_err_t rst = -RT_ERROR;
+
+    if (tv == RT_NULL)
+        return -1;
+
+    /* default is 0 */
+    tv->tv_sec = 0;
+    tv->tv_usec = 0;
+
+#ifdef RT_USING_RTC
+    /* optimization: find rtc device only first */
+    if (device == RT_NULL)
+    {
+        device = rt_device_find("rtc");
+    }
+
+    /* read timestamp from RTC device */
+    if (device != RT_NULL)
+    {
+        if (rt_device_open(device, 0) == RT_EOK)
+        {
+            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &tv->tv_sec);
+            rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME_US, &tv->tv_usec);
+            rt_device_close(device);
+        }
+    }
+    else
+    {
+        /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
+        rt_kprintf("Cannot find a RTC device to provide time!\r\n");
+        return -1;
+    }
+
+    return (rst < 0) ? -1 : 1;
+
+#else
+    /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
+    rt_kprintf("Cannot find a RTC device to provide time!\r\n");
+    return -1;
+#endif /* RT_USING_RTC */
+}
+
+/**
+ * Set time to RTC device (without timezone)
+ * @param tv: struct timeval
+ * @return -1 failure; 1 success
+ */
+static int set_timeval(struct timeval *tv)
+{
+    rt_err_t rst = -RT_ERROR;
+#ifdef RT_USING_RTC
+    static rt_device_t device = RT_NULL;
+#endif
+
+    if (tv == RT_NULL)
+        return -1;
+
+#ifdef RT_USING_RTC
+    /* optimization: find rtc device only first */
+    if (device == RT_NULL)
+    {
+        device = rt_device_find("rtc");
+    }
+
+    /* read timestamp from RTC device */
+    if (device != RT_NULL)
+    {
+        if (rt_device_open(device, 0) == RT_EOK)
+        {
+            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &tv->tv_sec);
+            rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME_US, &tv->tv_usec);
+            rt_device_close(device);
+        }
+    }
+    else
+    {
+        LOG_W("Cannot find a RTC device to provide time!");
+        return -1;
+    }
+
+    return (rst < 0) ? -1 : 1;
+
+#else
+    LOG_W("Cannot find a RTC device to provide time!");
+    return -1;
+#endif /* RT_USING_RTC */
+}
+
 struct tm *gmtime_r(const time_t *timep, struct tm *r)
 {
     time_t i;
@@ -183,49 +281,6 @@ char* ctime(const time_t *tim_p)
 }
 RTM_EXPORT(ctime);
 
-/*-1 failure; 1 success*/
-static int get_timeval(struct timeval *tv)
-{
-    if (tv == RT_NULL)
-        return -1;
-
-    /* default is not available */
-    tv->tv_sec = -1;
-    /* default is 0 */
-    tv->tv_usec = 0;
-
-#ifdef RT_USING_RTC
-    static rt_device_t device = RT_NULL;
-
-    /* optimization: find rtc device only first */
-    if (device == RT_NULL)
-    {
-        device = rt_device_find("rtc");
-    }
-
-    /* read timestamp from RTC device */
-    if (device != RT_NULL)
-    {
-        if (rt_device_open(device, 0) == RT_EOK)
-        {
-            rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &tv->tv_sec);
-            rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME_US, &tv->tv_usec);
-            rt_device_close(device);
-        }
-    }
-#endif /* RT_USING_RTC */
-
-    if (tv->tv_sec == (time_t) -1)
-    {
-        /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
-        rt_kprintf("Cannot find a RTC device to provide time!\r\n");
-        tv->tv_sec = 0;
-        return -1;
-    }
-
-    return 1;
-}
-
 /**
  * Returns the current time.
  *
@@ -239,7 +294,7 @@ RT_WEAK time_t time(time_t *t)
 {
     struct timeval now;
 
-    if(get_timeval(&now)>0)
+    if(get_timeval(&now) > 0)
     {
         if (t)
         {
@@ -263,28 +318,24 @@ RTM_EXPORT(clock);
 
 int stime(const time_t *t)
 {
-#ifdef RT_USING_RTC
-    rt_device_t device;
+    struct timeval tv;
 
-    /* read timestamp from RTC device. */
-    device = rt_device_find("rtc");
-    if (rt_device_open(device, 0) == RT_EOK)
+    if (!t)
+    {
+        errno = EFAULT;
+        return -1;
+    }
+
+    tv.tv_sec = *t;
+    if (set_timeval(&tv) > 0)
     {
-        rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, (void*)t);
-        rt_device_close(device);
+        return 0;
     }
     else
     {
-        LOG_W("Cannot find a RTC device to provide time!");
         errno = EFAULT;
         return -1;
     }
-    return 0;
-#else
-    LOG_W("Cannot find a RTC device to provide time!");
-    errno = EFAULT;
-    return -1;
-#endif /* RT_USING_RTC */
 }
 RTM_EXPORT(stime);
 
@@ -366,7 +417,7 @@ RTM_EXPORT(timegm);
 /* TODO: timezone */
 int gettimeofday(struct timeval *tv, struct timezone *tz)
 {
-    if (tv != RT_NULL && get_timeval(tv)>0)
+    if (tv != RT_NULL && get_timeval(tv) > 0)
     {
         return 0;
     }
@@ -385,7 +436,15 @@ int settimeofday(const struct timeval *tv, const struct timezone *tz)
     {
         if(tv->tv_sec >= 0 && tv->tv_usec >= 0)
         {
-            return stime((const time_t *)&tv->tv_sec);
+            if(set_timeval((struct timeval *)tv) > 0)
+            {
+                return 0;
+            }
+            else
+            {
+                errno = EFAULT;
+                return -1;
+            }
         }
         else
         {
diff --git a/include/rtdef.h b/include/rtdef.h
index aba8a6f12d..111ac4a12c 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -964,10 +964,10 @@ enum rt_device_class_type
 #define RT_DEVICE_CTRL_MTD_FORMAT       0x10            /**< format a MTD device */
 #define RT_DEVICE_CTRL_RTC_GET_TIME     0x10            /**< get second time */
 #define RT_DEVICE_CTRL_RTC_SET_TIME     0x11            /**< set second time */
-#define RT_DEVICE_CTRL_RTC_GET_ALARM    0x12            /**< get alarm */
-#define RT_DEVICE_CTRL_RTC_SET_ALARM    0x13            /**< set alarm */
-#define RT_DEVICE_CTRL_RTC_GET_TIME_US  0x14            /**< get microsecond time */
-#define RT_DEVICE_CTRL_RTC_SET_TIME_US  0x15            /**< set microsecond time */
+#define RT_DEVICE_CTRL_RTC_GET_TIME_US  0x12            /**< get microsecond time */
+#define RT_DEVICE_CTRL_RTC_SET_TIME_US  0x13            /**< set microsecond time */
+#define RT_DEVICE_CTRL_RTC_GET_ALARM    0x14            /**< get alarm */
+#define RT_DEVICE_CTRL_RTC_SET_ALARM    0x15            /**< set alarm */
 
 typedef struct rt_device *rt_device_t;
 
-- 
cgit v1.3.1


From b74022e2c4274698aa26a18cbd6df72842f8ac38 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Thu, 15 Apr 2021 14:31:23 +0800
Subject: mktime support fixed timezone

---
 components/libc/compilers/common/time.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 75adb817da..638735b77c 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -234,7 +234,13 @@ RTM_EXPORT(localtime);
 /* TODO: timezone */
 time_t mktime(struct tm * const t)
 {
-    return timegm(t);
+    time_t timestamp;
+    int utc_plus;
+
+    utc_plus = 8; /* GMT: UTC+8 */
+    timestamp = timegm(t);
+    timestamp = timestamp - 3600 * utc_plus;
+    return timestamp;
 }
 RTM_EXPORT(mktime);
 
-- 
cgit v1.3.1


From 46d51a99f1b92738a2955245527ad8e18bcf96a5 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Thu, 15 Apr 2021 16:34:09 +0800
Subject: 优化get_timeval set_timeval 条件编译代码结构
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 638735b77c..33d8907165 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -77,7 +77,6 @@ static int get_timeval(struct timeval *tv)
 {
 #ifdef RT_USING_RTC
     static rt_device_t device = RT_NULL;
-#endif
     rt_err_t rst = -RT_ERROR;
 
     if (tv == RT_NULL)
@@ -87,7 +86,6 @@ static int get_timeval(struct timeval *tv)
     tv->tv_sec = 0;
     tv->tv_usec = 0;
 
-#ifdef RT_USING_RTC
     /* optimization: find rtc device only first */
     if (device == RT_NULL)
     {
@@ -127,15 +125,13 @@ static int get_timeval(struct timeval *tv)
  */
 static int set_timeval(struct timeval *tv)
 {
-    rt_err_t rst = -RT_ERROR;
 #ifdef RT_USING_RTC
     static rt_device_t device = RT_NULL;
-#endif
+    rt_err_t rst = -RT_ERROR;
 
     if (tv == RT_NULL)
         return -1;
 
-#ifdef RT_USING_RTC
     /* optimization: find rtc device only first */
     if (device == RT_NULL)
     {
@@ -311,7 +307,7 @@ RT_WEAK time_t time(time_t *t)
     else
     {
         errno = EFAULT;
-        return -1;
+        return ((time_t)-1);
     }
 }
 RTM_EXPORT(time);
-- 
cgit v1.3.1


From 9d401ea8b06518a49b59b6d246325afa5902e3f4 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 18 Apr 2021 00:51:07 +0800
Subject: 重新整理libc重复共用文件，创建common_for_all 和 common_for_keiliar
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/armlibc/dirent.h         |  62 --
 components/libc/compilers/armlibc/fcntl.h          |  18 -
 components/libc/compilers/armlibc/sys/mman.h       |  58 --
 components/libc/compilers/armlibc/sys/stat.h       |   8 -
 components/libc/compilers/armlibc/sys/types.h      |  34 --
 components/libc/compilers/armlibc/sys/unistd.h     |  83 ---
 components/libc/compilers/armlibc/unistd.h         |  10 -
 components/libc/compilers/common/SConscript        |  27 -
 components/libc/compilers/common/readme.md         |  10 -
 components/libc/compilers/common/stdlib.c          |  28 -
 components/libc/compilers/common/sys/ioctl.h       |  15 -
 components/libc/compilers/common/sys/time.h        | 101 ----
 components/libc/compilers/common/termios.h         |  19 -
 components/libc/compilers/common/time.c            | 643 ---------------------
 components/libc/compilers/common/unistd.c          |  88 ---
 components/libc/compilers/common_all/SConscript    |  27 +
 components/libc/compilers/common_all/dirent.h      |  65 +++
 components/libc/compilers/common_all/readme.md     |  10 +
 components/libc/compilers/common_all/stdlib.c      |  28 +
 components/libc/compilers/common_all/sys/ioctl.h   |  18 +
 components/libc/compilers/common_all/sys/mman.h    |  60 ++
 components/libc/compilers/common_all/sys/statfs.h  |  21 +
 components/libc/compilers/common_all/sys/termios.h |   8 +
 components/libc/compilers/common_all/sys/time.h    | 101 ++++
 components/libc/compilers/common_all/termios.h     |  19 +
 components/libc/compilers/common_all/time.c        | 643 +++++++++++++++++++++
 components/libc/compilers/common_all/unistd.c      |  88 +++
 .../libc/compilers/common_except_gcc/SConscript    |  13 +
 .../libc/compilers/common_except_gcc/fcntl.h       |  18 +
 .../libc/compilers/common_except_gcc/sys/stat.h    |   8 +
 .../libc/compilers/common_except_gcc/sys/types.h   |  36 ++
 .../libc/compilers/common_except_gcc/sys/unistd.h  |  83 +++
 .../libc/compilers/common_except_gcc/unistd.h      |  10 +
 components/libc/compilers/dlib/dirent.h            |  62 --
 components/libc/compilers/dlib/fcntl.h             |   8 -
 components/libc/compilers/dlib/sys/mman.h          |  58 --
 components/libc/compilers/dlib/sys/stat.h          |   8 -
 components/libc/compilers/dlib/sys/types.h         |  33 --
 components/libc/compilers/dlib/sys/unistd.h        |  57 --
 components/libc/compilers/dlib/unistd.h            |  14 -
 components/libc/compilers/newlib/sys/dirent.h      |  65 ---
 components/libc/compilers/newlib/sys/mman.h        |  58 --
 components/libc/compilers/newlib/sys/statfs.h      |  21 -
 components/libc/compilers/newlib/sys/termios.h     |   8 -
 include/rtlibc.h                                   |   5 -
 45 files changed, 1256 insertions(+), 1601 deletions(-)
 delete mode 100644 components/libc/compilers/armlibc/dirent.h
 delete mode 100644 components/libc/compilers/armlibc/fcntl.h
 delete mode 100644 components/libc/compilers/armlibc/sys/mman.h
 delete mode 100644 components/libc/compilers/armlibc/sys/stat.h
 delete mode 100644 components/libc/compilers/armlibc/sys/types.h
 delete mode 100644 components/libc/compilers/armlibc/sys/unistd.h
 delete mode 100644 components/libc/compilers/armlibc/unistd.h
 delete mode 100644 components/libc/compilers/common/SConscript
 delete mode 100644 components/libc/compilers/common/readme.md
 delete mode 100644 components/libc/compilers/common/stdlib.c
 delete mode 100644 components/libc/compilers/common/sys/ioctl.h
 delete mode 100644 components/libc/compilers/common/sys/time.h
 delete mode 100644 components/libc/compilers/common/termios.h
 delete mode 100644 components/libc/compilers/common/time.c
 delete mode 100644 components/libc/compilers/common/unistd.c
 create mode 100644 components/libc/compilers/common_all/SConscript
 create mode 100644 components/libc/compilers/common_all/dirent.h
 create mode 100644 components/libc/compilers/common_all/readme.md
 create mode 100644 components/libc/compilers/common_all/stdlib.c
 create mode 100644 components/libc/compilers/common_all/sys/ioctl.h
 create mode 100644 components/libc/compilers/common_all/sys/mman.h
 create mode 100644 components/libc/compilers/common_all/sys/statfs.h
 create mode 100644 components/libc/compilers/common_all/sys/termios.h
 create mode 100644 components/libc/compilers/common_all/sys/time.h
 create mode 100644 components/libc/compilers/common_all/termios.h
 create mode 100644 components/libc/compilers/common_all/time.c
 create mode 100644 components/libc/compilers/common_all/unistd.c
 create mode 100644 components/libc/compilers/common_except_gcc/SConscript
 create mode 100644 components/libc/compilers/common_except_gcc/fcntl.h
 create mode 100644 components/libc/compilers/common_except_gcc/sys/stat.h
 create mode 100644 components/libc/compilers/common_except_gcc/sys/types.h
 create mode 100644 components/libc/compilers/common_except_gcc/sys/unistd.h
 create mode 100644 components/libc/compilers/common_except_gcc/unistd.h
 delete mode 100644 components/libc/compilers/dlib/dirent.h
 delete mode 100644 components/libc/compilers/dlib/fcntl.h
 delete mode 100644 components/libc/compilers/dlib/sys/mman.h
 delete mode 100644 components/libc/compilers/dlib/sys/stat.h
 delete mode 100644 components/libc/compilers/dlib/sys/types.h
 delete mode 100644 components/libc/compilers/dlib/sys/unistd.h
 delete mode 100644 components/libc/compilers/dlib/unistd.h
 delete mode 100644 components/libc/compilers/newlib/sys/dirent.h
 delete mode 100644 components/libc/compilers/newlib/sys/mman.h
 delete mode 100644 components/libc/compilers/newlib/sys/statfs.h
 delete mode 100644 components/libc/compilers/newlib/sys/termios.h

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/armlibc/dirent.h b/components/libc/compilers/armlibc/dirent.h
deleted file mode 100644
index 2c0521d2e3..0000000000
--- a/components/libc/compilers/armlibc/dirent.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef __RTT_DIRENT_H__
-#define __RTT_DIRENT_H__
-
-#include <rtthread.h>
-#include <rtlibc.h>
-
-/*
-* dirent.h - format of directory entries
- * Ref: http://www.opengroup.org/onlinepubs/009695399/basedefs/dirent.h.html
- */
-
-/* File types */
-#define FT_REGULAR      0   /* regular file */
-#define FT_SOCKET       1   /* socket file  */
-#define FT_DIRECTORY    2   /* directory    */
-#define FT_USER         3   /* user defined */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef HAVE_DIR_STRUCTURE
-typedef struct
-{
-    int fd;                         /* directory file */
-    char buf[512];
-    int num;
-    int cur;
-} DIR;
-#endif
-
-#ifndef HAVE_DIRENT_STRUCTURE
-struct dirent
-{
-    rt_uint8_t  d_type;             /* The type of the file */
-    rt_uint8_t  d_namlen;           /* The length of the not including the terminating null file name */
-    rt_uint16_t d_reclen;           /* length of this record */
-    char d_name[256];               /* The null-terminated file name */
-};
-#endif
-
-int            closedir(DIR *);
-DIR           *opendir(const char *);
-struct dirent *readdir(DIR *);
-int            readdir_r(DIR *, struct dirent *, struct dirent **);
-void           rewinddir(DIR *);
-void           seekdir(DIR *, long int);
-long           telldir(DIR *);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/components/libc/compilers/armlibc/fcntl.h b/components/libc/compilers/armlibc/fcntl.h
deleted file mode 100644
index f247b926e9..0000000000
--- a/components/libc/compilers/armlibc/fcntl.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef FCNTL_H__
-#define FCNTL_H__
-
-#include <rtconfig.h>
-
-#ifdef RT_USING_DFS
-#include <dfs_posix.h>
-#endif
-
-#endif
diff --git a/components/libc/compilers/armlibc/sys/mman.h b/components/libc/compilers/armlibc/sys/mman.h
deleted file mode 100644
index 6a260ccd70..0000000000
--- a/components/libc/compilers/armlibc/sys/mman.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017/11/30     Bernard      The first version.
- */
-
-#ifndef _SYS_MMAN_H
-#define _SYS_MMAN_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define MAP_FAILED     ((void *) -1)
-
-#define MAP_SHARED     0x01
-#define MAP_PRIVATE    0x02
-#define MAP_TYPE       0x0f
-#define MAP_FIXED      0x10
-#define MAP_ANON       0x20
-#define MAP_ANONYMOUS  MAP_ANON
-#define MAP_NORESERVE  0x4000
-#define MAP_GROWSDOWN  0x0100
-#define MAP_DENYWRITE  0x0800
-#define MAP_EXECUTABLE 0x1000
-#define MAP_LOCKED     0x2000
-#define MAP_POPULATE   0x8000
-#define MAP_NONBLOCK   0x10000
-#define MAP_STACK      0x20000
-#define MAP_HUGETLB    0x40000
-#define MAP_FILE       0
-
-#define PROT_NONE      0
-#define PROT_READ      1
-#define PROT_WRITE     2
-#define PROT_EXEC      4
-#define PROT_GROWSDOWN 0x01000000
-#define PROT_GROWSUP   0x02000000
-
-#define MS_ASYNC       1
-#define MS_INVALIDATE  2
-#define MS_SYNC        4
-
-#define MCL_CURRENT    1
-#define MCL_FUTURE     2
-#define MCL_ONFAULT    4
-
-void *mmap (void *start, size_t len, int prot, int flags, int fd, off_t off);
-int munmap (void *start, size_t len);
-
-#ifdef __cplusplus
-}
-#endif
-#endif
diff --git a/components/libc/compilers/armlibc/sys/stat.h b/components/libc/compilers/armlibc/sys/stat.h
deleted file mode 100644
index c4b42083c4..0000000000
--- a/components/libc/compilers/armlibc/sys/stat.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
diff --git a/components/libc/compilers/armlibc/sys/types.h b/components/libc/compilers/armlibc/sys/types.h
deleted file mode 100644
index a6b245b81c..0000000000
--- a/components/libc/compilers/armlibc/sys/types.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-05     Meco Man     fix bugs
- * 2020-12-16     Meco Man     add useconds_t
- */
-#ifndef __TYPES_H__
-#define __TYPES_H__
-
-#include <stdint.h>
-
-typedef int32_t          clockid_t;
-typedef int32_t          key_t;         /* Used for interprocess communication. */
-typedef int              pid_t;         /* Used for process IDs and process group IDs. */
-typedef unsigned short   uid_t;
-typedef unsigned short   gid_t;
-#ifndef ARCH_CPU_64BIT
-typedef signed int       ssize_t;       /* Used for a count of bytes or an error indication. */
-#else
-typedef long signed int  ssize_t;       /* Used for a count of bytes or an error indication. */
-#endif
-typedef unsigned long    useconds_t;    /* microseconds (unsigned) */
-
-typedef unsigned long    dev_t;
-
-typedef unsigned int     u_int;
-typedef unsigned char    u_char;
-typedef unsigned long    u_long;
-
-#endif
diff --git a/components/libc/compilers/armlibc/sys/unistd.h b/components/libc/compilers/armlibc/sys/unistd.h
deleted file mode 100644
index 7752a1caf7..0000000000
--- a/components/libc/compilers/armlibc/sys/unistd.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-12-16     Meco Man     add usleep
- */
-#ifndef _SYS_UNISTD_H
-#define _SYS_UNISTD_H
-
-#include <rtconfig.h>
-#include "types.h"
-
-#ifdef RT_USING_DFS
-
-#define STDIN_FILENO    0       /* standard input file descriptor */
-#define STDOUT_FILENO   1       /* standard output file descriptor */
-#define STDERR_FILENO   2       /* standard error file descriptor */
-
-#include <dfs_posix.h>
-#else
-#define _FREAD      0x0001  /* read enabled */
-#define _FWRITE     0x0002  /* write enabled */
-#define _FAPPEND    0x0008  /* append (writes guaranteed at the end) */
-#define _FMARK      0x0010  /* internal; mark during gc() */
-#define _FDEFER     0x0020  /* internal; defer for next gc pass */
-#define _FASYNC     0x0040  /* signal pgrp when data ready */
-#define _FSHLOCK    0x0080  /* BSD flock() shared lock present */
-#define _FEXLOCK    0x0100  /* BSD flock() exclusive lock present */
-#define _FCREAT     0x0200  /* open with file create */
-#define _FTRUNC     0x0400  /* open with truncation */
-#define _FEXCL      0x0800  /* error on open if file exists */
-#define _FNBIO      0x1000  /* non blocking I/O (sys5 style) */
-#define _FSYNC      0x2000  /* do all writes synchronously */
-#define _FNONBLOCK  0x4000  /* non blocking I/O (POSIX style) */
-#define _FNDELAY    _FNONBLOCK  /* non blocking I/O (4.2 style) */
-#define _FNOCTTY    0x8000  /* don't assign a ctty on this open */
-
-
-#ifndef O_RDONLY
-#define O_RDONLY    0       /* +1 == FREAD */
-#endif
-#ifndef O_WRONLY
-#define O_WRONLY    1       /* +1 == FWRITE */
-#endif
-#ifndef O_RDWR
-#define O_RDWR      2       /* +1 == FREAD|FWRITE */
-#endif
-#ifndef O_APPEND
-#define O_APPEND    _FAPPEND
-#endif
-#ifndef O_CREAT
-#define O_CREAT     _FCREAT
-#endif
-#ifndef O_TRUNC
-#define O_TRUNC     _FTRUNC
-#endif
-#ifndef O_EXCL
-#define O_EXCL      _FEXCL
-#endif
-#ifndef O_SYNC
-#define O_SYNC      _FSYNC
-#endif
-
-#endif
-
-
-int     isatty      (int fd);
-char *  ttyname     (int desc);
-
-unsigned int sleep(unsigned int seconds);
-int usleep(useconds_t usec);
-
-pid_t getpid(void);
-pid_t getppid(void);
-uid_t getuid(void);
-uid_t geteuid(void);
-gid_t getgid(void);
-gid_t getegid(void);
-
-#endif /* _SYS_UNISTD_H */
diff --git a/components/libc/compilers/armlibc/unistd.h b/components/libc/compilers/armlibc/unistd.h
deleted file mode 100644
index cd77a12e3b..0000000000
--- a/components/libc/compilers/armlibc/unistd.h
+++ /dev/null
@@ -1,10 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#include "sys/unistd.h"
-
diff --git a/components/libc/compilers/common/SConscript b/components/libc/compilers/common/SConscript
deleted file mode 100644
index 319e1a3555..0000000000
--- a/components/libc/compilers/common/SConscript
+++ /dev/null
@@ -1,27 +0,0 @@
-from building import *
-
-Import('rtconfig')
-
-src   = []
-cwd   = GetCurrentDir()
-group = []
-CPPPATH = [cwd]
-
-if GetDepend('RT_USING_LIBC'):
-    src += Glob('*.c')
-else:
-    if GetDepend('RT_LIBC_USING_TIME'):
-        src += ['time.c']
-
-if GetDepend('RT_USING_POSIX') == False:
-    SrcRemove(src, ['unistd.c'])
-
-if rtconfig.CROSS_TOOL == 'keil':
-    CPPDEFINES = ['__CLK_TCK=RT_TICK_PER_SECOND']
-else:
-    CPPDEFINES = []
-
-if GetDepend('RT_USING_LIBC') or GetDepend('RT_LIBC_USING_TIME'):
-    group = DefineGroup('libc', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
-
-Return('group')
diff --git a/components/libc/compilers/common/readme.md b/components/libc/compilers/common/readme.md
deleted file mode 100644
index 81bb005d0a..0000000000
--- a/components/libc/compilers/common/readme.md
+++ /dev/null
@@ -1,10 +0,0 @@
-## Attentions
-
-1. This folder is "common" for armlibc newlibc and dlib.
-
-2. If you want to add new `.c` files, please do not forget to fix SConscript file too. eg:
-
-```python
-if GetDepend('RT_USING_POSIX') == False:
-        SrcRemove(src, ['unistd.c'])
-```
\ No newline at end of file
diff --git a/components/libc/compilers/common/stdlib.c b/components/libc/compilers/common/stdlib.c
deleted file mode 100644
index 9d8952e99e..0000000000
--- a/components/libc/compilers/common/stdlib.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2021-02-15     Meco Man     first version
- */
-
-#include <rtthread.h>
-
-void __rt_libc_exit(int status)
-{
-    rt_thread_t self = rt_thread_self();
-
-    if (self != RT_NULL)
-    {
-        rt_kprintf("thread:%s exit:%d!\n", self->name, status);
-        rt_thread_control(self, RT_THREAD_CTRL_CLOSE, RT_NULL);
-    }
-}
-
-int __rt_libc_system(const char *string)
-{
-    /* TODO */
-    return 0;
-}
diff --git a/components/libc/compilers/common/sys/ioctl.h b/components/libc/compilers/common/sys/ioctl.h
deleted file mode 100644
index df17b19a61..0000000000
--- a/components/libc/compilers/common/sys/ioctl.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-01     Meco Man     First Version
- */
-#ifndef _SYS_IOCTL_H
-#define _SYS_IOCTL_H
-
-
-
-#endif
diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
deleted file mode 100644
index ef1c810608..0000000000
--- a/components/libc/compilers/common/sys/time.h
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-07     Meco Man     combine gcc armcc iccarm
- * 2021-02-12     Meco Man     move all definitions located in <clock_time.h> to this file
- */
-#ifndef _SYS_TIME_H_
-#define _SYS_TIME_H_
-
-#include <rtconfig.h>
-#include <time.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Skip define timespec for IAR version over 8.10.1 where __VER__ is 8010001.
- */
-#if defined ( __ICCARM__ ) && (__VER__ >= 8010001)
-#define _TIMESPEC_DEFINED
-#endif
-
-
-#ifndef _TIMEVAL_DEFINED
-#define _TIMEVAL_DEFINED
-/*
- * Structure returned by gettimeofday(2) system call,
- * and used in other calls.
- */
-#if !(defined(_WIN32))
-struct timeval {
-    long    tv_sec;     /* seconds */
-    long    tv_usec;    /* and microseconds */
-};
-#endif
-#endif /* _TIMEVAL_DEFINED */
-
-#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && !defined (__ICCARM__) && !defined (_WIN32)
-struct timespec {
-    time_t  tv_sec;     /* seconds */
-    long    tv_nsec;    /* and nanoseconds */
-};
-#endif
-
-struct timezone {
-  int tz_minuteswest;   /* minutes west of Greenwich */
-  int tz_dsttime;       /* type of dst correction */
-};
-
-int stime(const time_t *t);
-time_t timegm(struct tm * const t);
-int gettimeofday(struct timeval *tv, struct timezone *tz);
-int settimeofday(const struct timeval *tv, const struct timezone *tz);
-#if defined(__ARMCC_VERSION) || defined (__ICCARM__)
-struct tm *gmtime_r(const time_t *timep, struct tm *r);
-#endif
-
-#ifdef RT_USING_POSIX
-#include <sys/types.h>
-/* posix clock and timer */
-#define MILLISECOND_PER_SECOND  1000UL
-#define MICROSECOND_PER_SECOND  1000000UL
-#define NANOSECOND_PER_SECOND   1000000000UL
-
-#define MILLISECOND_PER_TICK    (MILLISECOND_PER_SECOND / RT_TICK_PER_SECOND)
-#define MICROSECOND_PER_TICK    (MICROSECOND_PER_SECOND / RT_TICK_PER_SECOND)
-#define NANOSECOND_PER_TICK     (NANOSECOND_PER_SECOND  / RT_TICK_PER_SECOND)
-
-#ifndef CLOCK_REALTIME
-#define CLOCK_REALTIME      1
-#endif
-
-#define CLOCK_CPUTIME_ID    2
-
-#ifndef CLOCK_PROCESS_CPUTIME_ID
-#define CLOCK_PROCESS_CPUTIME_ID CLOCK_CPUTIME_ID
-#endif
-#ifndef CLOCK_THREAD_CPUTIME_ID
-#define CLOCK_THREAD_CPUTIME_ID  CLOCK_CPUTIME_ID
-#endif
-
-#ifndef CLOCK_MONOTONIC
-#define CLOCK_MONOTONIC     4
-#endif
-
-int clock_getres  (clockid_t clockid, struct timespec *res);
-int clock_gettime (clockid_t clockid, struct timespec *tp);
-int clock_settime (clockid_t clockid, const struct timespec *tp);
-int clock_time_to_tick(const struct timespec *time);
-#endif /* RT_USING_POSIX */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _SYS_TIME_H_ */
diff --git a/components/libc/compilers/common/termios.h b/components/libc/compilers/common/termios.h
deleted file mode 100644
index 2960d52c58..0000000000
--- a/components/libc/compilers/common/termios.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef _TERMIOS_H__
-#define _TERMIOS_H__
-
-#include <rtconfig.h>
-
-#ifdef RT_USING_POSIX_TERMIOS
-#include <sys/types.h>
-#include <posix_termios.h>
-#endif
-
-#endif
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
deleted file mode 100644
index 33d8907165..0000000000
--- a/components/libc/compilers/common/time.c
+++ /dev/null
@@ -1,643 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2019-08-21     zhangjun     copy from minilibc
- * 2020-09-07     Meco Man     combine gcc armcc iccarm
- * 2021-02-05     Meco Man     add timegm()
- * 2021-02-07     Meco Man     fixed gettimeofday()
- * 2021-02-08     Meco Man     add settimeofday() stime()
- * 2021-02-10     Meco Man     add ctime_r() and re-implement ctime()
- * 2021-02-11     Meco Man     fix bug #3183 - align days[] and months[] to 4 bytes
- * 2021-02-12     Meco Man     add errno
- * 2012-12-08     Bernard      <clock_time.c> fix the issue of _timevalue.tv_usec initialization,
- *                             which found by Rob <rdent@iinet.net.au>
- * 2021-02-12     Meco Man     move all of the functions located in <clock_time.c> to this file
- * 2021-03-15     Meco Man     fixed bug: https://club.rt-thread.org/ask/question/423650.html
- */
-
-#include <sys/time.h>
-#include <rtthread.h>
-
-#ifdef RT_USING_DEVICE
-#include <rtdevice.h>
-#endif
-
-#define DBG_TAG    "TIME"
-#define DBG_LVL    DBG_INFO
-#include <rtdbg.h>
-
-/* seconds per day */
-#define SPD 24*60*60
-
-/* days per month -- nonleap! */
-static const short __spm[13] =
-{
-    0,
-    (31),
-    (31 + 28),
-    (31 + 28 + 31),
-    (31 + 28 + 31 + 30),
-    (31 + 28 + 31 + 30 + 31),
-    (31 + 28 + 31 + 30 + 31 + 30),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31),
-};
-
-ALIGN(4) static const char days[] = "Sun Mon Tue Wed Thu Fri Sat ";
-ALIGN(4) static const char months[] = "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ";
-
-static int __isleap(int year)
-{
-    /* every fourth year is a leap year except for century years that are
-     * not divisible by 400. */
-    /*  return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); */
-    return (!(year % 4) && ((year % 100) || !(year % 400)));
-}
-
-static void num2str(char *c, int i)
-{
-    c[0] = i / 10 + '0';
-    c[1] = i % 10 + '0';
-}
-
-/**
- * Get time from RTC device (without timezone)
- * @param tv: struct timeval
- * @return -1 failure; 1 success
- */
-static int get_timeval(struct timeval *tv)
-{
-#ifdef RT_USING_RTC
-    static rt_device_t device = RT_NULL;
-    rt_err_t rst = -RT_ERROR;
-
-    if (tv == RT_NULL)
-        return -1;
-
-    /* default is 0 */
-    tv->tv_sec = 0;
-    tv->tv_usec = 0;
-
-    /* optimization: find rtc device only first */
-    if (device == RT_NULL)
-    {
-        device = rt_device_find("rtc");
-    }
-
-    /* read timestamp from RTC device */
-    if (device != RT_NULL)
-    {
-        if (rt_device_open(device, 0) == RT_EOK)
-        {
-            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &tv->tv_sec);
-            rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME_US, &tv->tv_usec);
-            rt_device_close(device);
-        }
-    }
-    else
-    {
-        /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
-        rt_kprintf("Cannot find a RTC device to provide time!\r\n");
-        return -1;
-    }
-
-    return (rst < 0) ? -1 : 1;
-
-#else
-    /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
-    rt_kprintf("Cannot find a RTC device to provide time!\r\n");
-    return -1;
-#endif /* RT_USING_RTC */
-}
-
-/**
- * Set time to RTC device (without timezone)
- * @param tv: struct timeval
- * @return -1 failure; 1 success
- */
-static int set_timeval(struct timeval *tv)
-{
-#ifdef RT_USING_RTC
-    static rt_device_t device = RT_NULL;
-    rt_err_t rst = -RT_ERROR;
-
-    if (tv == RT_NULL)
-        return -1;
-
-    /* optimization: find rtc device only first */
-    if (device == RT_NULL)
-    {
-        device = rt_device_find("rtc");
-    }
-
-    /* read timestamp from RTC device */
-    if (device != RT_NULL)
-    {
-        if (rt_device_open(device, 0) == RT_EOK)
-        {
-            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &tv->tv_sec);
-            rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME_US, &tv->tv_usec);
-            rt_device_close(device);
-        }
-    }
-    else
-    {
-        LOG_W("Cannot find a RTC device to provide time!");
-        return -1;
-    }
-
-    return (rst < 0) ? -1 : 1;
-
-#else
-    LOG_W("Cannot find a RTC device to provide time!");
-    return -1;
-#endif /* RT_USING_RTC */
-}
-
-struct tm *gmtime_r(const time_t *timep, struct tm *r)
-{
-    time_t i;
-    register time_t work = *timep % (SPD);
-    r->tm_sec = work % 60;
-    work /= 60;
-    r->tm_min = work % 60;
-    r->tm_hour = work / 60;
-    work = *timep / (SPD);
-    r->tm_wday = (4 + work) % 7;
-    for (i = 1970;; ++i)
-    {
-        register time_t k = __isleap(i) ? 366 : 365;
-        if (work >= k)
-            work -= k;
-        else
-            break;
-    }
-    r->tm_year = i - 1900;
-    r->tm_yday = work;
-
-    r->tm_mday = 1;
-    if (__isleap(i) && (work > 58))
-    {
-        if (work == 59)
-            r->tm_mday = 2; /* 29.2. */
-        work -= 1;
-    }
-
-    for (i = 11; i && (__spm[i] > work); --i)
-        ;
-    r->tm_mon = i;
-    r->tm_mday += work - __spm[i];
-
-    r->tm_isdst = 0;
-    return r;
-}
-RTM_EXPORT(gmtime_r);
-
-struct tm* gmtime(const time_t* t)
-{
-    static struct tm tmp;
-    return gmtime_r(t, &tmp);
-}
-RTM_EXPORT(gmtime);
-
-/*TODO: timezone */
-struct tm* localtime_r(const time_t* t, struct tm* r)
-{
-    time_t local_tz;
-    int utc_plus;
-
-    utc_plus = 8; /* GMT: UTC+8 */
-    local_tz = *t + utc_plus * 3600;
-    return gmtime_r(&local_tz, r);
-}
-RTM_EXPORT(localtime_r);
-
-struct tm* localtime(const time_t* t)
-{
-    static struct tm tmp;
-    return localtime_r(t, &tmp);
-}
-RTM_EXPORT(localtime);
-
-/* TODO: timezone */
-time_t mktime(struct tm * const t)
-{
-    time_t timestamp;
-    int utc_plus;
-
-    utc_plus = 8; /* GMT: UTC+8 */
-    timestamp = timegm(t);
-    timestamp = timestamp - 3600 * utc_plus;
-    return timestamp;
-}
-RTM_EXPORT(mktime);
-
-char* asctime_r(const struct tm *t, char *buf)
-{
-    /* "Wed Jun 30 21:49:08 1993\n" */
-    *(int*) buf = *(int*) (days + (t->tm_wday << 2));
-    *(int*) (buf + 4) = *(int*) (months + (t->tm_mon << 2));
-    num2str(buf + 8, t->tm_mday);
-    if (buf[8] == '0')
-        buf[8] = ' ';
-    buf[10] = ' ';
-    num2str(buf + 11, t->tm_hour);
-    buf[13] = ':';
-    num2str(buf + 14, t->tm_min);
-    buf[16] = ':';
-    num2str(buf + 17, t->tm_sec);
-    buf[19] = ' ';
-    num2str(buf + 20, (t->tm_year + 1900) / 100);
-    num2str(buf + 22, (t->tm_year + 1900) % 100);
-    buf[24] = '\n';
-    buf[25] = '\0';
-    return buf;
-}
-RTM_EXPORT(asctime_r);
-
-char* asctime(const struct tm *timeptr)
-{
-    static char buf[26];
-    return asctime_r(timeptr, buf);
-}
-RTM_EXPORT(asctime);
-
-char *ctime_r (const time_t * tim_p, char * result)
-{
-    struct tm tm;
-    return asctime_r (localtime_r (tim_p, &tm), result);
-}
-RTM_EXPORT(ctime_r);
-
-char* ctime(const time_t *tim_p)
-{
-    return asctime (localtime (tim_p));
-}
-RTM_EXPORT(ctime);
-
-/**
- * Returns the current time.
- *
- * @param time_t * t the timestamp pointer, if not used, keep NULL.
- *
- * @return The value ((time_t)-1) is returned if the calendar time is not available.
- *         If timer is not a NULL pointer, the return value is also stored in timer.
- *
- */
-RT_WEAK time_t time(time_t *t)
-{
-    struct timeval now;
-
-    if(get_timeval(&now) > 0)
-    {
-        if (t)
-        {
-            *t = now.tv_sec;
-        }
-        return now.tv_sec;
-    }
-    else
-    {
-        errno = EFAULT;
-        return ((time_t)-1);
-    }
-}
-RTM_EXPORT(time);
-
-RT_WEAK clock_t clock(void)
-{
-    return rt_tick_get();
-}
-RTM_EXPORT(clock);
-
-int stime(const time_t *t)
-{
-    struct timeval tv;
-
-    if (!t)
-    {
-        errno = EFAULT;
-        return -1;
-    }
-
-    tv.tv_sec = *t;
-    if (set_timeval(&tv) > 0)
-    {
-        return 0;
-    }
-    else
-    {
-        errno = EFAULT;
-        return -1;
-    }
-}
-RTM_EXPORT(stime);
-
-time_t timegm(struct tm * const t)
-{
-    register time_t day;
-    register time_t i;
-    register time_t years = t->tm_year - 70;
-
-    if (t->tm_sec > 60)
-    {
-        t->tm_min += t->tm_sec / 60;
-        t->tm_sec %= 60;
-    }
-    if (t->tm_min > 60)
-    {
-        t->tm_hour += t->tm_min / 60;
-        t->tm_min %= 60;
-    }
-    if (t->tm_hour > 24)
-    {
-        t->tm_mday += t->tm_hour / 24;
-        t->tm_hour %= 24;
-    }
-    if (t->tm_mon > 12)
-    {
-        t->tm_year += t->tm_mon / 12;
-        t->tm_mon %= 12;
-    }
-    while (t->tm_mday > __spm[1 + t->tm_mon])
-    {
-        if (t->tm_mon == 1 && __isleap(t->tm_year + 1900))
-        {
-            --t->tm_mday;
-        }
-        t->tm_mday -= __spm[t->tm_mon];
-        ++t->tm_mon;
-        if (t->tm_mon > 11)
-        {
-            t->tm_mon = 0;
-            ++t->tm_year;
-        }
-    }
-
-    if (t->tm_year < 70)
-        return (time_t) - 1;
-
-    /* Days since 1970 is 365 * number of years + number of leap years since 1970 */
-    day = years * 365 + (years + 1) / 4;
-
-    /* After 2100 we have to substract 3 leap years for every 400 years
-     This is not intuitive. Most mktime implementations do not support
-     dates after 2059, anyway, so we might leave this out for it's
-     bloat. */
-    if (years >= 131)
-    {
-        years -= 131;
-        years /= 100;
-        day -= (years >> 2) * 3 + 1;
-        if ((years &= 3) == 3)
-            years--;
-        day -= years;
-    }
-
-    day += t->tm_yday = __spm[t->tm_mon] + t->tm_mday - 1 +
-                        (__isleap(t->tm_year + 1900) & (t->tm_mon > 1));
-
-    /* day is now the number of days since 'Jan 1 1970' */
-    i = 7;
-    t->tm_wday = (day + 4) % i; /* Sunday=0, Monday=1, ..., Saturday=6 */
-
-    i = 24;
-    day *= i;
-    i = 60;
-    return ((day + t->tm_hour) * i + t->tm_min) * i + t->tm_sec;
-}
-RTM_EXPORT(timegm);
-
-/* TODO: timezone */
-int gettimeofday(struct timeval *tv, struct timezone *tz)
-{
-    if (tv != RT_NULL && get_timeval(tv) > 0)
-    {
-        return 0;
-    }
-    else
-    {
-        errno = EFAULT;
-        return -1;
-    }
-}
-RTM_EXPORT(gettimeofday);
-
-/* TODO: timezone */
-int settimeofday(const struct timeval *tv, const struct timezone *tz)
-{
-    if (tv != RT_NULL)
-    {
-        if(tv->tv_sec >= 0 && tv->tv_usec >= 0)
-        {
-            if(set_timeval((struct timeval *)tv) > 0)
-            {
-                return 0;
-            }
-            else
-            {
-                errno = EFAULT;
-                return -1;
-            }
-        }
-        else
-        {
-            errno = EINVAL;
-            return -1;
-        }
-    }
-    else
-    {
-        errno = EFAULT;
-        return -1;
-    }
-}
-RTM_EXPORT(settimeofday);
-
-/* inherent in the toolchain */
-RTM_EXPORT(difftime);
-RTM_EXPORT(strftime);
-
-#ifdef RT_USING_POSIX
-static struct timeval _timevalue;
-static int clock_time_system_init()
-{
-    time_t time;
-    rt_tick_t tick;
-    rt_device_t device;
-
-    time = 0;
-    device = rt_device_find("rtc");
-    if (device != RT_NULL)
-    {
-        /* get realtime seconds */
-        rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time);
-    }
-
-    /* get tick */
-    tick = rt_tick_get();
-
-    _timevalue.tv_usec = (tick%RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
-    _timevalue.tv_sec = time - tick/RT_TICK_PER_SECOND - 1;
-
-    return 0;
-}
-INIT_COMPONENT_EXPORT(clock_time_system_init);
-
-int clock_getres(clockid_t clockid, struct timespec *res)
-{
-    int ret = 0;
-
-    if (res == RT_NULL)
-    {
-        rt_set_errno(EINVAL);
-        return -1;
-    }
-
-    switch (clockid)
-    {
-    case CLOCK_REALTIME:
-        res->tv_sec = 0;
-        res->tv_nsec = NANOSECOND_PER_SECOND/RT_TICK_PER_SECOND;
-        break;
-
-#ifdef RT_USING_CPUTIME
-    case CLOCK_CPUTIME_ID:
-        res->tv_sec  = 0;
-        res->tv_nsec = clock_cpu_getres();
-        break;
-#endif
-
-    default:
-        ret = -1;
-        rt_set_errno(EINVAL);
-        break;
-    }
-
-    return ret;
-}
-RTM_EXPORT(clock_getres);
-
-int clock_gettime(clockid_t clockid, struct timespec *tp)
-{
-    int ret = 0;
-
-    if (tp == RT_NULL)
-    {
-        rt_set_errno(EINVAL);
-        return -1;
-    }
-
-    switch (clockid)
-    {
-    case CLOCK_REALTIME:
-        {
-            /* get tick */
-            int tick = rt_tick_get();
-
-            tp->tv_sec  = _timevalue.tv_sec + tick / RT_TICK_PER_SECOND;
-            tp->tv_nsec = (_timevalue.tv_usec + (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK) * 1000;
-        }
-        break;
-
-#ifdef RT_USING_CPUTIME
-    case CLOCK_CPUTIME_ID:
-        {
-            float unit = 0;
-            long long cpu_tick;
-
-            unit = clock_cpu_getres();
-            cpu_tick = clock_cpu_gettime();
-
-            tp->tv_sec  = ((int)(cpu_tick * unit)) / NANOSECOND_PER_SECOND;
-            tp->tv_nsec = ((int)(cpu_tick * unit)) % NANOSECOND_PER_SECOND;
-        }
-        break;
-#endif
-    default:
-        rt_set_errno(EINVAL);
-        ret = -1;
-    }
-
-    return ret;
-}
-RTM_EXPORT(clock_gettime);
-
-int clock_settime(clockid_t clockid, const struct timespec *tp)
-{
-    int second;
-    rt_tick_t tick;
-    rt_device_t device;
-
-    if ((clockid != CLOCK_REALTIME) || (tp == RT_NULL))
-    {
-        rt_set_errno(EINVAL);
-
-        return -1;
-    }
-
-    /* get second */
-    second = tp->tv_sec;
-    /* get tick */
-    tick = rt_tick_get();
-
-    /* update timevalue */
-    _timevalue.tv_usec = MICROSECOND_PER_SECOND - (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
-    _timevalue.tv_sec = second - tick/RT_TICK_PER_SECOND - 1;
-
-    /* update for RTC device */
-    device = rt_device_find("rtc");
-    if (device != RT_NULL)
-    {
-        /* set realtime seconds */
-        rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &second);
-    }
-    else
-        return -1;
-
-    return 0;
-}
-RTM_EXPORT(clock_settime);
-
-int clock_time_to_tick(const struct timespec *time)
-{
-    int tick;
-    int nsecond, second;
-    struct timespec tp;
-
-    RT_ASSERT(time != RT_NULL);
-
-    tick = RT_WAITING_FOREVER;
-    if (time != NULL)
-    {
-        /* get current tp */
-        clock_gettime(CLOCK_REALTIME, &tp);
-
-        if ((time->tv_nsec - tp.tv_nsec) < 0)
-        {
-            nsecond = NANOSECOND_PER_SECOND - (tp.tv_nsec - time->tv_nsec);
-            second  = time->tv_sec - tp.tv_sec - 1;
-        }
-        else
-        {
-            nsecond = time->tv_nsec - tp.tv_nsec;
-            second  = time->tv_sec - tp.tv_sec;
-        }
-
-        tick = second * RT_TICK_PER_SECOND + nsecond * RT_TICK_PER_SECOND / NANOSECOND_PER_SECOND;
-        if (tick < 0) tick = 0;
-    }
-
-    return tick;
-}
-RTM_EXPORT(clock_time_to_tick);
-
-#endif /* RT_USING_POSIX */
diff --git a/components/libc/compilers/common/unistd.c b/components/libc/compilers/common/unistd.c
deleted file mode 100644
index 20130cbb8a..0000000000
--- a/components/libc/compilers/common/unistd.c
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-01     Meco Man     first Version
- * 2021-02-12     Meco Man     move all functions located in <pthread_sleep.c> to this file
- */
-
-#include <unistd.h>
-#include <rtthread.h>
-#include <rthw.h>
-
-#ifdef RT_USING_POSIX_TERMIOS
-#include "termios.h"
-
-int isatty(int fd)
-{
-    struct termios ts;
-    return(tcgetattr(fd,&ts) != -1);/*true if no error (is a tty)*/
-}
-RTM_EXPORT(isatty);
-#endif
-
-char *ttyname(int fd)
-{
-    return "/dev/tty0"; /*TODO: need to add more specific*/
-}
-RTM_EXPORT(ttyname);
-
-unsigned int sleep(unsigned int seconds)
-{
-    rt_tick_t delta_tick;
-
-    delta_tick = rt_tick_get();
-    rt_thread_delay(seconds * RT_TICK_PER_SECOND);
-    delta_tick = rt_tick_get() - delta_tick;
-
-    return seconds - delta_tick/RT_TICK_PER_SECOND;
-}
-RTM_EXPORT(sleep);
-
-int usleep(useconds_t usec)
-{
-    rt_thread_mdelay(usec / 1000u);
-    rt_hw_us_delay(usec % 1000u);
-    return 0;
-}
-RTM_EXPORT(usleep);
-
-pid_t getpid(void)
-{
-    /*TODO*/
-    return 0;
-}
-RTM_EXPORT(getpid);
-
-pid_t getppid(void)
-{
-    return 0;
-}
-RTM_EXPORT(getppid);
-
-uid_t getuid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(getuid);
-
-uid_t geteuid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(geteuid);
-
-gid_t getgid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(getgid);
-
-gid_t getegid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(getegid);
diff --git a/components/libc/compilers/common_all/SConscript b/components/libc/compilers/common_all/SConscript
new file mode 100644
index 0000000000..319e1a3555
--- /dev/null
+++ b/components/libc/compilers/common_all/SConscript
@@ -0,0 +1,27 @@
+from building import *
+
+Import('rtconfig')
+
+src   = []
+cwd   = GetCurrentDir()
+group = []
+CPPPATH = [cwd]
+
+if GetDepend('RT_USING_LIBC'):
+    src += Glob('*.c')
+else:
+    if GetDepend('RT_LIBC_USING_TIME'):
+        src += ['time.c']
+
+if GetDepend('RT_USING_POSIX') == False:
+    SrcRemove(src, ['unistd.c'])
+
+if rtconfig.CROSS_TOOL == 'keil':
+    CPPDEFINES = ['__CLK_TCK=RT_TICK_PER_SECOND']
+else:
+    CPPDEFINES = []
+
+if GetDepend('RT_USING_LIBC') or GetDepend('RT_LIBC_USING_TIME'):
+    group = DefineGroup('libc', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
+
+Return('group')
diff --git a/components/libc/compilers/common_all/dirent.h b/components/libc/compilers/common_all/dirent.h
new file mode 100644
index 0000000000..bfba586093
--- /dev/null
+++ b/components/libc/compilers/common_all/dirent.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef __RTT_DIRENT_H__
+#define __RTT_DIRENT_H__
+
+#include <rtthread.h>
+
+/*
+* dirent.h - format of directory entries
+ * Ref: http://www.opengroup.org/onlinepubs/009695399/basedefs/dirent.h.html
+ */
+
+/* File types */
+#define FT_REGULAR      0   /* regular file */
+#define FT_SOCKET       1   /* socket file  */
+#define FT_DIRECTORY    2   /* directory    */
+#define FT_USER         3   /* user defined */
+
+#define DT_UNKNOWN      0x00
+#define DT_REG          0x01
+#define DT_DIR          0x02
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef HAVE_DIR_STRUCTURE
+typedef struct
+{
+    int fd;                         /* directory file */
+    char buf[512];
+    int num;
+    int cur;
+} DIR;
+#endif
+
+#ifndef HAVE_DIRENT_STRUCTURE
+struct dirent
+{
+    rt_uint8_t  d_type;             /* The type of the file */
+    rt_uint8_t  d_namlen;           /* The length of the not including the terminating null file name */
+    rt_uint16_t d_reclen;           /* length of this record */
+    char d_name[256];               /* The null-terminated file name */
+};
+#endif
+
+int            closedir(DIR *);
+DIR           *opendir(const char *);
+struct dirent *readdir(DIR *);
+int            readdir_r(DIR *, struct dirent *, struct dirent **);
+void           rewinddir(DIR *);
+void           seekdir(DIR *, long int);
+long           telldir(DIR *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/components/libc/compilers/common_all/readme.md b/components/libc/compilers/common_all/readme.md
new file mode 100644
index 0000000000..81bb005d0a
--- /dev/null
+++ b/components/libc/compilers/common_all/readme.md
@@ -0,0 +1,10 @@
+## Attentions
+
+1. This folder is "common" for armlibc newlibc and dlib.
+
+2. If you want to add new `.c` files, please do not forget to fix SConscript file too. eg:
+
+```python
+if GetDepend('RT_USING_POSIX') == False:
+        SrcRemove(src, ['unistd.c'])
+```
\ No newline at end of file
diff --git a/components/libc/compilers/common_all/stdlib.c b/components/libc/compilers/common_all/stdlib.c
new file mode 100644
index 0000000000..9d8952e99e
--- /dev/null
+++ b/components/libc/compilers/common_all/stdlib.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-02-15     Meco Man     first version
+ */
+
+#include <rtthread.h>
+
+void __rt_libc_exit(int status)
+{
+    rt_thread_t self = rt_thread_self();
+
+    if (self != RT_NULL)
+    {
+        rt_kprintf("thread:%s exit:%d!\n", self->name, status);
+        rt_thread_control(self, RT_THREAD_CTRL_CLOSE, RT_NULL);
+    }
+}
+
+int __rt_libc_system(const char *string)
+{
+    /* TODO */
+    return 0;
+}
diff --git a/components/libc/compilers/common_all/sys/ioctl.h b/components/libc/compilers/common_all/sys/ioctl.h
new file mode 100644
index 0000000000..648d90230d
--- /dev/null
+++ b/components/libc/compilers/common_all/sys/ioctl.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-01     Meco Man     First Version
+ */
+#ifndef _SYS_IOCTL_H
+#define _SYS_IOCTL_H
+
+#include <rtconfig.h>
+#ifdef RT_USING_POSIX
+#include <dfs_posix.h>
+#endif
+
+#endif
diff --git a/components/libc/compilers/common_all/sys/mman.h b/components/libc/compilers/common_all/sys/mman.h
new file mode 100644
index 0000000000..a9235d61f0
--- /dev/null
+++ b/components/libc/compilers/common_all/sys/mman.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017/11/30     Bernard      The first version.
+ */
+
+#ifndef _SYS_MMAN_H
+#define _SYS_MMAN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <sys/types.h>
+    
+#define MAP_FAILED     ((void *) -1)
+
+#define MAP_SHARED     0x01
+#define MAP_PRIVATE    0x02
+#define MAP_TYPE       0x0f
+#define MAP_FIXED      0x10
+#define MAP_ANON       0x20
+#define MAP_ANONYMOUS  MAP_ANON
+#define MAP_NORESERVE  0x4000
+#define MAP_GROWSDOWN  0x0100
+#define MAP_DENYWRITE  0x0800
+#define MAP_EXECUTABLE 0x1000
+#define MAP_LOCKED     0x2000
+#define MAP_POPULATE   0x8000
+#define MAP_NONBLOCK   0x10000
+#define MAP_STACK      0x20000
+#define MAP_HUGETLB    0x40000
+#define MAP_FILE       0
+
+#define PROT_NONE      0
+#define PROT_READ      1
+#define PROT_WRITE     2
+#define PROT_EXEC      4
+#define PROT_GROWSDOWN 0x01000000
+#define PROT_GROWSUP   0x02000000
+
+#define MS_ASYNC       1
+#define MS_INVALIDATE  2
+#define MS_SYNC        4
+
+#define MCL_CURRENT    1
+#define MCL_FUTURE     2
+#define MCL_ONFAULT    4
+
+void *mmap (void *start, size_t len, int prot, int flags, int fd, off_t off);
+int munmap (void *start, size_t len);
+
+#ifdef __cplusplus
+}
+#endif
+#endif
diff --git a/components/libc/compilers/common_all/sys/statfs.h b/components/libc/compilers/common_all/sys/statfs.h
new file mode 100644
index 0000000000..0996af9a18
--- /dev/null
+++ b/components/libc/compilers/common_all/sys/statfs.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef __RTT_STATFS_H__
+#define __RTT_STATFS_H__
+
+#include <rtthread.h>
+
+struct statfs
+{
+    rt_size_t f_bsize;   /* block size */
+    rt_size_t f_blocks;  /* total data blocks in file system */
+    rt_size_t f_bfree;   /* free blocks in file system */
+};
+
+#endif
diff --git a/components/libc/compilers/common_all/sys/termios.h b/components/libc/compilers/common_all/sys/termios.h
new file mode 100644
index 0000000000..c4b42083c4
--- /dev/null
+++ b/components/libc/compilers/common_all/sys/termios.h
@@ -0,0 +1,8 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
diff --git a/components/libc/compilers/common_all/sys/time.h b/components/libc/compilers/common_all/sys/time.h
new file mode 100644
index 0000000000..ef1c810608
--- /dev/null
+++ b/components/libc/compilers/common_all/sys/time.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-07     Meco Man     combine gcc armcc iccarm
+ * 2021-02-12     Meco Man     move all definitions located in <clock_time.h> to this file
+ */
+#ifndef _SYS_TIME_H_
+#define _SYS_TIME_H_
+
+#include <rtconfig.h>
+#include <time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Skip define timespec for IAR version over 8.10.1 where __VER__ is 8010001.
+ */
+#if defined ( __ICCARM__ ) && (__VER__ >= 8010001)
+#define _TIMESPEC_DEFINED
+#endif
+
+
+#ifndef _TIMEVAL_DEFINED
+#define _TIMEVAL_DEFINED
+/*
+ * Structure returned by gettimeofday(2) system call,
+ * and used in other calls.
+ */
+#if !(defined(_WIN32))
+struct timeval {
+    long    tv_sec;     /* seconds */
+    long    tv_usec;    /* and microseconds */
+};
+#endif
+#endif /* _TIMEVAL_DEFINED */
+
+#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && !defined (__ICCARM__) && !defined (_WIN32)
+struct timespec {
+    time_t  tv_sec;     /* seconds */
+    long    tv_nsec;    /* and nanoseconds */
+};
+#endif
+
+struct timezone {
+  int tz_minuteswest;   /* minutes west of Greenwich */
+  int tz_dsttime;       /* type of dst correction */
+};
+
+int stime(const time_t *t);
+time_t timegm(struct tm * const t);
+int gettimeofday(struct timeval *tv, struct timezone *tz);
+int settimeofday(const struct timeval *tv, const struct timezone *tz);
+#if defined(__ARMCC_VERSION) || defined (__ICCARM__)
+struct tm *gmtime_r(const time_t *timep, struct tm *r);
+#endif
+
+#ifdef RT_USING_POSIX
+#include <sys/types.h>
+/* posix clock and timer */
+#define MILLISECOND_PER_SECOND  1000UL
+#define MICROSECOND_PER_SECOND  1000000UL
+#define NANOSECOND_PER_SECOND   1000000000UL
+
+#define MILLISECOND_PER_TICK    (MILLISECOND_PER_SECOND / RT_TICK_PER_SECOND)
+#define MICROSECOND_PER_TICK    (MICROSECOND_PER_SECOND / RT_TICK_PER_SECOND)
+#define NANOSECOND_PER_TICK     (NANOSECOND_PER_SECOND  / RT_TICK_PER_SECOND)
+
+#ifndef CLOCK_REALTIME
+#define CLOCK_REALTIME      1
+#endif
+
+#define CLOCK_CPUTIME_ID    2
+
+#ifndef CLOCK_PROCESS_CPUTIME_ID
+#define CLOCK_PROCESS_CPUTIME_ID CLOCK_CPUTIME_ID
+#endif
+#ifndef CLOCK_THREAD_CPUTIME_ID
+#define CLOCK_THREAD_CPUTIME_ID  CLOCK_CPUTIME_ID
+#endif
+
+#ifndef CLOCK_MONOTONIC
+#define CLOCK_MONOTONIC     4
+#endif
+
+int clock_getres  (clockid_t clockid, struct timespec *res);
+int clock_gettime (clockid_t clockid, struct timespec *tp);
+int clock_settime (clockid_t clockid, const struct timespec *tp);
+int clock_time_to_tick(const struct timespec *time);
+#endif /* RT_USING_POSIX */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_TIME_H_ */
diff --git a/components/libc/compilers/common_all/termios.h b/components/libc/compilers/common_all/termios.h
new file mode 100644
index 0000000000..2960d52c58
--- /dev/null
+++ b/components/libc/compilers/common_all/termios.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef _TERMIOS_H__
+#define _TERMIOS_H__
+
+#include <rtconfig.h>
+
+#ifdef RT_USING_POSIX_TERMIOS
+#include <sys/types.h>
+#include <posix_termios.h>
+#endif
+
+#endif
diff --git a/components/libc/compilers/common_all/time.c b/components/libc/compilers/common_all/time.c
new file mode 100644
index 0000000000..33d8907165
--- /dev/null
+++ b/components/libc/compilers/common_all/time.c
@@ -0,0 +1,643 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2019-08-21     zhangjun     copy from minilibc
+ * 2020-09-07     Meco Man     combine gcc armcc iccarm
+ * 2021-02-05     Meco Man     add timegm()
+ * 2021-02-07     Meco Man     fixed gettimeofday()
+ * 2021-02-08     Meco Man     add settimeofday() stime()
+ * 2021-02-10     Meco Man     add ctime_r() and re-implement ctime()
+ * 2021-02-11     Meco Man     fix bug #3183 - align days[] and months[] to 4 bytes
+ * 2021-02-12     Meco Man     add errno
+ * 2012-12-08     Bernard      <clock_time.c> fix the issue of _timevalue.tv_usec initialization,
+ *                             which found by Rob <rdent@iinet.net.au>
+ * 2021-02-12     Meco Man     move all of the functions located in <clock_time.c> to this file
+ * 2021-03-15     Meco Man     fixed bug: https://club.rt-thread.org/ask/question/423650.html
+ */
+
+#include <sys/time.h>
+#include <rtthread.h>
+
+#ifdef RT_USING_DEVICE
+#include <rtdevice.h>
+#endif
+
+#define DBG_TAG    "TIME"
+#define DBG_LVL    DBG_INFO
+#include <rtdbg.h>
+
+/* seconds per day */
+#define SPD 24*60*60
+
+/* days per month -- nonleap! */
+static const short __spm[13] =
+{
+    0,
+    (31),
+    (31 + 28),
+    (31 + 28 + 31),
+    (31 + 28 + 31 + 30),
+    (31 + 28 + 31 + 30 + 31),
+    (31 + 28 + 31 + 30 + 31 + 30),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31),
+};
+
+ALIGN(4) static const char days[] = "Sun Mon Tue Wed Thu Fri Sat ";
+ALIGN(4) static const char months[] = "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ";
+
+static int __isleap(int year)
+{
+    /* every fourth year is a leap year except for century years that are
+     * not divisible by 400. */
+    /*  return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); */
+    return (!(year % 4) && ((year % 100) || !(year % 400)));
+}
+
+static void num2str(char *c, int i)
+{
+    c[0] = i / 10 + '0';
+    c[1] = i % 10 + '0';
+}
+
+/**
+ * Get time from RTC device (without timezone)
+ * @param tv: struct timeval
+ * @return -1 failure; 1 success
+ */
+static int get_timeval(struct timeval *tv)
+{
+#ifdef RT_USING_RTC
+    static rt_device_t device = RT_NULL;
+    rt_err_t rst = -RT_ERROR;
+
+    if (tv == RT_NULL)
+        return -1;
+
+    /* default is 0 */
+    tv->tv_sec = 0;
+    tv->tv_usec = 0;
+
+    /* optimization: find rtc device only first */
+    if (device == RT_NULL)
+    {
+        device = rt_device_find("rtc");
+    }
+
+    /* read timestamp from RTC device */
+    if (device != RT_NULL)
+    {
+        if (rt_device_open(device, 0) == RT_EOK)
+        {
+            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &tv->tv_sec);
+            rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME_US, &tv->tv_usec);
+            rt_device_close(device);
+        }
+    }
+    else
+    {
+        /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
+        rt_kprintf("Cannot find a RTC device to provide time!\r\n");
+        return -1;
+    }
+
+    return (rst < 0) ? -1 : 1;
+
+#else
+    /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
+    rt_kprintf("Cannot find a RTC device to provide time!\r\n");
+    return -1;
+#endif /* RT_USING_RTC */
+}
+
+/**
+ * Set time to RTC device (without timezone)
+ * @param tv: struct timeval
+ * @return -1 failure; 1 success
+ */
+static int set_timeval(struct timeval *tv)
+{
+#ifdef RT_USING_RTC
+    static rt_device_t device = RT_NULL;
+    rt_err_t rst = -RT_ERROR;
+
+    if (tv == RT_NULL)
+        return -1;
+
+    /* optimization: find rtc device only first */
+    if (device == RT_NULL)
+    {
+        device = rt_device_find("rtc");
+    }
+
+    /* read timestamp from RTC device */
+    if (device != RT_NULL)
+    {
+        if (rt_device_open(device, 0) == RT_EOK)
+        {
+            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &tv->tv_sec);
+            rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME_US, &tv->tv_usec);
+            rt_device_close(device);
+        }
+    }
+    else
+    {
+        LOG_W("Cannot find a RTC device to provide time!");
+        return -1;
+    }
+
+    return (rst < 0) ? -1 : 1;
+
+#else
+    LOG_W("Cannot find a RTC device to provide time!");
+    return -1;
+#endif /* RT_USING_RTC */
+}
+
+struct tm *gmtime_r(const time_t *timep, struct tm *r)
+{
+    time_t i;
+    register time_t work = *timep % (SPD);
+    r->tm_sec = work % 60;
+    work /= 60;
+    r->tm_min = work % 60;
+    r->tm_hour = work / 60;
+    work = *timep / (SPD);
+    r->tm_wday = (4 + work) % 7;
+    for (i = 1970;; ++i)
+    {
+        register time_t k = __isleap(i) ? 366 : 365;
+        if (work >= k)
+            work -= k;
+        else
+            break;
+    }
+    r->tm_year = i - 1900;
+    r->tm_yday = work;
+
+    r->tm_mday = 1;
+    if (__isleap(i) && (work > 58))
+    {
+        if (work == 59)
+            r->tm_mday = 2; /* 29.2. */
+        work -= 1;
+    }
+
+    for (i = 11; i && (__spm[i] > work); --i)
+        ;
+    r->tm_mon = i;
+    r->tm_mday += work - __spm[i];
+
+    r->tm_isdst = 0;
+    return r;
+}
+RTM_EXPORT(gmtime_r);
+
+struct tm* gmtime(const time_t* t)
+{
+    static struct tm tmp;
+    return gmtime_r(t, &tmp);
+}
+RTM_EXPORT(gmtime);
+
+/*TODO: timezone */
+struct tm* localtime_r(const time_t* t, struct tm* r)
+{
+    time_t local_tz;
+    int utc_plus;
+
+    utc_plus = 8; /* GMT: UTC+8 */
+    local_tz = *t + utc_plus * 3600;
+    return gmtime_r(&local_tz, r);
+}
+RTM_EXPORT(localtime_r);
+
+struct tm* localtime(const time_t* t)
+{
+    static struct tm tmp;
+    return localtime_r(t, &tmp);
+}
+RTM_EXPORT(localtime);
+
+/* TODO: timezone */
+time_t mktime(struct tm * const t)
+{
+    time_t timestamp;
+    int utc_plus;
+
+    utc_plus = 8; /* GMT: UTC+8 */
+    timestamp = timegm(t);
+    timestamp = timestamp - 3600 * utc_plus;
+    return timestamp;
+}
+RTM_EXPORT(mktime);
+
+char* asctime_r(const struct tm *t, char *buf)
+{
+    /* "Wed Jun 30 21:49:08 1993\n" */
+    *(int*) buf = *(int*) (days + (t->tm_wday << 2));
+    *(int*) (buf + 4) = *(int*) (months + (t->tm_mon << 2));
+    num2str(buf + 8, t->tm_mday);
+    if (buf[8] == '0')
+        buf[8] = ' ';
+    buf[10] = ' ';
+    num2str(buf + 11, t->tm_hour);
+    buf[13] = ':';
+    num2str(buf + 14, t->tm_min);
+    buf[16] = ':';
+    num2str(buf + 17, t->tm_sec);
+    buf[19] = ' ';
+    num2str(buf + 20, (t->tm_year + 1900) / 100);
+    num2str(buf + 22, (t->tm_year + 1900) % 100);
+    buf[24] = '\n';
+    buf[25] = '\0';
+    return buf;
+}
+RTM_EXPORT(asctime_r);
+
+char* asctime(const struct tm *timeptr)
+{
+    static char buf[26];
+    return asctime_r(timeptr, buf);
+}
+RTM_EXPORT(asctime);
+
+char *ctime_r (const time_t * tim_p, char * result)
+{
+    struct tm tm;
+    return asctime_r (localtime_r (tim_p, &tm), result);
+}
+RTM_EXPORT(ctime_r);
+
+char* ctime(const time_t *tim_p)
+{
+    return asctime (localtime (tim_p));
+}
+RTM_EXPORT(ctime);
+
+/**
+ * Returns the current time.
+ *
+ * @param time_t * t the timestamp pointer, if not used, keep NULL.
+ *
+ * @return The value ((time_t)-1) is returned if the calendar time is not available.
+ *         If timer is not a NULL pointer, the return value is also stored in timer.
+ *
+ */
+RT_WEAK time_t time(time_t *t)
+{
+    struct timeval now;
+
+    if(get_timeval(&now) > 0)
+    {
+        if (t)
+        {
+            *t = now.tv_sec;
+        }
+        return now.tv_sec;
+    }
+    else
+    {
+        errno = EFAULT;
+        return ((time_t)-1);
+    }
+}
+RTM_EXPORT(time);
+
+RT_WEAK clock_t clock(void)
+{
+    return rt_tick_get();
+}
+RTM_EXPORT(clock);
+
+int stime(const time_t *t)
+{
+    struct timeval tv;
+
+    if (!t)
+    {
+        errno = EFAULT;
+        return -1;
+    }
+
+    tv.tv_sec = *t;
+    if (set_timeval(&tv) > 0)
+    {
+        return 0;
+    }
+    else
+    {
+        errno = EFAULT;
+        return -1;
+    }
+}
+RTM_EXPORT(stime);
+
+time_t timegm(struct tm * const t)
+{
+    register time_t day;
+    register time_t i;
+    register time_t years = t->tm_year - 70;
+
+    if (t->tm_sec > 60)
+    {
+        t->tm_min += t->tm_sec / 60;
+        t->tm_sec %= 60;
+    }
+    if (t->tm_min > 60)
+    {
+        t->tm_hour += t->tm_min / 60;
+        t->tm_min %= 60;
+    }
+    if (t->tm_hour > 24)
+    {
+        t->tm_mday += t->tm_hour / 24;
+        t->tm_hour %= 24;
+    }
+    if (t->tm_mon > 12)
+    {
+        t->tm_year += t->tm_mon / 12;
+        t->tm_mon %= 12;
+    }
+    while (t->tm_mday > __spm[1 + t->tm_mon])
+    {
+        if (t->tm_mon == 1 && __isleap(t->tm_year + 1900))
+        {
+            --t->tm_mday;
+        }
+        t->tm_mday -= __spm[t->tm_mon];
+        ++t->tm_mon;
+        if (t->tm_mon > 11)
+        {
+            t->tm_mon = 0;
+            ++t->tm_year;
+        }
+    }
+
+    if (t->tm_year < 70)
+        return (time_t) - 1;
+
+    /* Days since 1970 is 365 * number of years + number of leap years since 1970 */
+    day = years * 365 + (years + 1) / 4;
+
+    /* After 2100 we have to substract 3 leap years for every 400 years
+     This is not intuitive. Most mktime implementations do not support
+     dates after 2059, anyway, so we might leave this out for it's
+     bloat. */
+    if (years >= 131)
+    {
+        years -= 131;
+        years /= 100;
+        day -= (years >> 2) * 3 + 1;
+        if ((years &= 3) == 3)
+            years--;
+        day -= years;
+    }
+
+    day += t->tm_yday = __spm[t->tm_mon] + t->tm_mday - 1 +
+                        (__isleap(t->tm_year + 1900) & (t->tm_mon > 1));
+
+    /* day is now the number of days since 'Jan 1 1970' */
+    i = 7;
+    t->tm_wday = (day + 4) % i; /* Sunday=0, Monday=1, ..., Saturday=6 */
+
+    i = 24;
+    day *= i;
+    i = 60;
+    return ((day + t->tm_hour) * i + t->tm_min) * i + t->tm_sec;
+}
+RTM_EXPORT(timegm);
+
+/* TODO: timezone */
+int gettimeofday(struct timeval *tv, struct timezone *tz)
+{
+    if (tv != RT_NULL && get_timeval(tv) > 0)
+    {
+        return 0;
+    }
+    else
+    {
+        errno = EFAULT;
+        return -1;
+    }
+}
+RTM_EXPORT(gettimeofday);
+
+/* TODO: timezone */
+int settimeofday(const struct timeval *tv, const struct timezone *tz)
+{
+    if (tv != RT_NULL)
+    {
+        if(tv->tv_sec >= 0 && tv->tv_usec >= 0)
+        {
+            if(set_timeval((struct timeval *)tv) > 0)
+            {
+                return 0;
+            }
+            else
+            {
+                errno = EFAULT;
+                return -1;
+            }
+        }
+        else
+        {
+            errno = EINVAL;
+            return -1;
+        }
+    }
+    else
+    {
+        errno = EFAULT;
+        return -1;
+    }
+}
+RTM_EXPORT(settimeofday);
+
+/* inherent in the toolchain */
+RTM_EXPORT(difftime);
+RTM_EXPORT(strftime);
+
+#ifdef RT_USING_POSIX
+static struct timeval _timevalue;
+static int clock_time_system_init()
+{
+    time_t time;
+    rt_tick_t tick;
+    rt_device_t device;
+
+    time = 0;
+    device = rt_device_find("rtc");
+    if (device != RT_NULL)
+    {
+        /* get realtime seconds */
+        rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time);
+    }
+
+    /* get tick */
+    tick = rt_tick_get();
+
+    _timevalue.tv_usec = (tick%RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
+    _timevalue.tv_sec = time - tick/RT_TICK_PER_SECOND - 1;
+
+    return 0;
+}
+INIT_COMPONENT_EXPORT(clock_time_system_init);
+
+int clock_getres(clockid_t clockid, struct timespec *res)
+{
+    int ret = 0;
+
+    if (res == RT_NULL)
+    {
+        rt_set_errno(EINVAL);
+        return -1;
+    }
+
+    switch (clockid)
+    {
+    case CLOCK_REALTIME:
+        res->tv_sec = 0;
+        res->tv_nsec = NANOSECOND_PER_SECOND/RT_TICK_PER_SECOND;
+        break;
+
+#ifdef RT_USING_CPUTIME
+    case CLOCK_CPUTIME_ID:
+        res->tv_sec  = 0;
+        res->tv_nsec = clock_cpu_getres();
+        break;
+#endif
+
+    default:
+        ret = -1;
+        rt_set_errno(EINVAL);
+        break;
+    }
+
+    return ret;
+}
+RTM_EXPORT(clock_getres);
+
+int clock_gettime(clockid_t clockid, struct timespec *tp)
+{
+    int ret = 0;
+
+    if (tp == RT_NULL)
+    {
+        rt_set_errno(EINVAL);
+        return -1;
+    }
+
+    switch (clockid)
+    {
+    case CLOCK_REALTIME:
+        {
+            /* get tick */
+            int tick = rt_tick_get();
+
+            tp->tv_sec  = _timevalue.tv_sec + tick / RT_TICK_PER_SECOND;
+            tp->tv_nsec = (_timevalue.tv_usec + (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK) * 1000;
+        }
+        break;
+
+#ifdef RT_USING_CPUTIME
+    case CLOCK_CPUTIME_ID:
+        {
+            float unit = 0;
+            long long cpu_tick;
+
+            unit = clock_cpu_getres();
+            cpu_tick = clock_cpu_gettime();
+
+            tp->tv_sec  = ((int)(cpu_tick * unit)) / NANOSECOND_PER_SECOND;
+            tp->tv_nsec = ((int)(cpu_tick * unit)) % NANOSECOND_PER_SECOND;
+        }
+        break;
+#endif
+    default:
+        rt_set_errno(EINVAL);
+        ret = -1;
+    }
+
+    return ret;
+}
+RTM_EXPORT(clock_gettime);
+
+int clock_settime(clockid_t clockid, const struct timespec *tp)
+{
+    int second;
+    rt_tick_t tick;
+    rt_device_t device;
+
+    if ((clockid != CLOCK_REALTIME) || (tp == RT_NULL))
+    {
+        rt_set_errno(EINVAL);
+
+        return -1;
+    }
+
+    /* get second */
+    second = tp->tv_sec;
+    /* get tick */
+    tick = rt_tick_get();
+
+    /* update timevalue */
+    _timevalue.tv_usec = MICROSECOND_PER_SECOND - (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
+    _timevalue.tv_sec = second - tick/RT_TICK_PER_SECOND - 1;
+
+    /* update for RTC device */
+    device = rt_device_find("rtc");
+    if (device != RT_NULL)
+    {
+        /* set realtime seconds */
+        rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &second);
+    }
+    else
+        return -1;
+
+    return 0;
+}
+RTM_EXPORT(clock_settime);
+
+int clock_time_to_tick(const struct timespec *time)
+{
+    int tick;
+    int nsecond, second;
+    struct timespec tp;
+
+    RT_ASSERT(time != RT_NULL);
+
+    tick = RT_WAITING_FOREVER;
+    if (time != NULL)
+    {
+        /* get current tp */
+        clock_gettime(CLOCK_REALTIME, &tp);
+
+        if ((time->tv_nsec - tp.tv_nsec) < 0)
+        {
+            nsecond = NANOSECOND_PER_SECOND - (tp.tv_nsec - time->tv_nsec);
+            second  = time->tv_sec - tp.tv_sec - 1;
+        }
+        else
+        {
+            nsecond = time->tv_nsec - tp.tv_nsec;
+            second  = time->tv_sec - tp.tv_sec;
+        }
+
+        tick = second * RT_TICK_PER_SECOND + nsecond * RT_TICK_PER_SECOND / NANOSECOND_PER_SECOND;
+        if (tick < 0) tick = 0;
+    }
+
+    return tick;
+}
+RTM_EXPORT(clock_time_to_tick);
+
+#endif /* RT_USING_POSIX */
diff --git a/components/libc/compilers/common_all/unistd.c b/components/libc/compilers/common_all/unistd.c
new file mode 100644
index 0000000000..20130cbb8a
--- /dev/null
+++ b/components/libc/compilers/common_all/unistd.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-01     Meco Man     first Version
+ * 2021-02-12     Meco Man     move all functions located in <pthread_sleep.c> to this file
+ */
+
+#include <unistd.h>
+#include <rtthread.h>
+#include <rthw.h>
+
+#ifdef RT_USING_POSIX_TERMIOS
+#include "termios.h"
+
+int isatty(int fd)
+{
+    struct termios ts;
+    return(tcgetattr(fd,&ts) != -1);/*true if no error (is a tty)*/
+}
+RTM_EXPORT(isatty);
+#endif
+
+char *ttyname(int fd)
+{
+    return "/dev/tty0"; /*TODO: need to add more specific*/
+}
+RTM_EXPORT(ttyname);
+
+unsigned int sleep(unsigned int seconds)
+{
+    rt_tick_t delta_tick;
+
+    delta_tick = rt_tick_get();
+    rt_thread_delay(seconds * RT_TICK_PER_SECOND);
+    delta_tick = rt_tick_get() - delta_tick;
+
+    return seconds - delta_tick/RT_TICK_PER_SECOND;
+}
+RTM_EXPORT(sleep);
+
+int usleep(useconds_t usec)
+{
+    rt_thread_mdelay(usec / 1000u);
+    rt_hw_us_delay(usec % 1000u);
+    return 0;
+}
+RTM_EXPORT(usleep);
+
+pid_t getpid(void)
+{
+    /*TODO*/
+    return 0;
+}
+RTM_EXPORT(getpid);
+
+pid_t getppid(void)
+{
+    return 0;
+}
+RTM_EXPORT(getppid);
+
+uid_t getuid(void)
+{
+    return 0; /*ROOT*/
+}
+RTM_EXPORT(getuid);
+
+uid_t geteuid(void)
+{
+    return 0; /*ROOT*/
+}
+RTM_EXPORT(geteuid);
+
+gid_t getgid(void)
+{
+    return 0; /*ROOT*/
+}
+RTM_EXPORT(getgid);
+
+gid_t getegid(void)
+{
+    return 0; /*ROOT*/
+}
+RTM_EXPORT(getegid);
diff --git a/components/libc/compilers/common_except_gcc/SConscript b/components/libc/compilers/common_except_gcc/SConscript
new file mode 100644
index 0000000000..bda0d5610f
--- /dev/null
+++ b/components/libc/compilers/common_except_gcc/SConscript
@@ -0,0 +1,13 @@
+from building import *
+
+Import('rtconfig')
+
+if rtconfig.PLATFORM == 'iar' or rtconfig.PLATFORM == 'armcc' or rtconfig.PLATFORM == 'armclang':
+    src   = []
+    cwd   = GetCurrentDir()
+    CPPPATH = [cwd]
+    group = []
+    src += Glob('*.c')
+
+    group = DefineGroup('libc', src, depend = ['RT_USING_LIBC'], CPPPATH = CPPPATH)
+    Return('group')
diff --git a/components/libc/compilers/common_except_gcc/fcntl.h b/components/libc/compilers/common_except_gcc/fcntl.h
new file mode 100644
index 0000000000..f247b926e9
--- /dev/null
+++ b/components/libc/compilers/common_except_gcc/fcntl.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef FCNTL_H__
+#define FCNTL_H__
+
+#include <rtconfig.h>
+
+#ifdef RT_USING_DFS
+#include <dfs_posix.h>
+#endif
+
+#endif
diff --git a/components/libc/compilers/common_except_gcc/sys/stat.h b/components/libc/compilers/common_except_gcc/sys/stat.h
new file mode 100644
index 0000000000..c4b42083c4
--- /dev/null
+++ b/components/libc/compilers/common_except_gcc/sys/stat.h
@@ -0,0 +1,8 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
diff --git a/components/libc/compilers/common_except_gcc/sys/types.h b/components/libc/compilers/common_except_gcc/sys/types.h
new file mode 100644
index 0000000000..7222326a2a
--- /dev/null
+++ b/components/libc/compilers/common_except_gcc/sys/types.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-05     Meco Man     fix bugs
+ * 2020-12-16     Meco Man     add useconds_t
+ */
+#ifndef __TYPES_H__
+#define __TYPES_H__
+
+#include <stdint.h>
+
+typedef int32_t          clockid_t;
+typedef int32_t          key_t;         /* Used for interprocess communication. */
+typedef int              pid_t;         /* Used for process IDs and process group IDs. */
+typedef unsigned short   uid_t;
+typedef unsigned short   gid_t;
+typedef signed long      off_t;
+typedef int              mode_t;
+#ifndef ARCH_CPU_64BIT
+typedef signed int       ssize_t;       /* Used for a count of bytes or an error indication. */
+#else
+typedef long signed int  ssize_t;       /* Used for a count of bytes or an error indication. */
+#endif
+typedef unsigned long    useconds_t;    /* microseconds (unsigned) */
+
+typedef unsigned long    dev_t;
+
+typedef unsigned int     u_int;
+typedef unsigned char    u_char;
+typedef unsigned long    u_long;
+
+#endif
diff --git a/components/libc/compilers/common_except_gcc/sys/unistd.h b/components/libc/compilers/common_except_gcc/sys/unistd.h
new file mode 100644
index 0000000000..7752a1caf7
--- /dev/null
+++ b/components/libc/compilers/common_except_gcc/sys/unistd.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-12-16     Meco Man     add usleep
+ */
+#ifndef _SYS_UNISTD_H
+#define _SYS_UNISTD_H
+
+#include <rtconfig.h>
+#include "types.h"
+
+#ifdef RT_USING_DFS
+
+#define STDIN_FILENO    0       /* standard input file descriptor */
+#define STDOUT_FILENO   1       /* standard output file descriptor */
+#define STDERR_FILENO   2       /* standard error file descriptor */
+
+#include <dfs_posix.h>
+#else
+#define _FREAD      0x0001  /* read enabled */
+#define _FWRITE     0x0002  /* write enabled */
+#define _FAPPEND    0x0008  /* append (writes guaranteed at the end) */
+#define _FMARK      0x0010  /* internal; mark during gc() */
+#define _FDEFER     0x0020  /* internal; defer for next gc pass */
+#define _FASYNC     0x0040  /* signal pgrp when data ready */
+#define _FSHLOCK    0x0080  /* BSD flock() shared lock present */
+#define _FEXLOCK    0x0100  /* BSD flock() exclusive lock present */
+#define _FCREAT     0x0200  /* open with file create */
+#define _FTRUNC     0x0400  /* open with truncation */
+#define _FEXCL      0x0800  /* error on open if file exists */
+#define _FNBIO      0x1000  /* non blocking I/O (sys5 style) */
+#define _FSYNC      0x2000  /* do all writes synchronously */
+#define _FNONBLOCK  0x4000  /* non blocking I/O (POSIX style) */
+#define _FNDELAY    _FNONBLOCK  /* non blocking I/O (4.2 style) */
+#define _FNOCTTY    0x8000  /* don't assign a ctty on this open */
+
+
+#ifndef O_RDONLY
+#define O_RDONLY    0       /* +1 == FREAD */
+#endif
+#ifndef O_WRONLY
+#define O_WRONLY    1       /* +1 == FWRITE */
+#endif
+#ifndef O_RDWR
+#define O_RDWR      2       /* +1 == FREAD|FWRITE */
+#endif
+#ifndef O_APPEND
+#define O_APPEND    _FAPPEND
+#endif
+#ifndef O_CREAT
+#define O_CREAT     _FCREAT
+#endif
+#ifndef O_TRUNC
+#define O_TRUNC     _FTRUNC
+#endif
+#ifndef O_EXCL
+#define O_EXCL      _FEXCL
+#endif
+#ifndef O_SYNC
+#define O_SYNC      _FSYNC
+#endif
+
+#endif
+
+
+int     isatty      (int fd);
+char *  ttyname     (int desc);
+
+unsigned int sleep(unsigned int seconds);
+int usleep(useconds_t usec);
+
+pid_t getpid(void);
+pid_t getppid(void);
+uid_t getuid(void);
+uid_t geteuid(void);
+gid_t getgid(void);
+gid_t getegid(void);
+
+#endif /* _SYS_UNISTD_H */
diff --git a/components/libc/compilers/common_except_gcc/unistd.h b/components/libc/compilers/common_except_gcc/unistd.h
new file mode 100644
index 0000000000..cd77a12e3b
--- /dev/null
+++ b/components/libc/compilers/common_except_gcc/unistd.h
@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#include "sys/unistd.h"
+
diff --git a/components/libc/compilers/dlib/dirent.h b/components/libc/compilers/dlib/dirent.h
deleted file mode 100644
index 2c0521d2e3..0000000000
--- a/components/libc/compilers/dlib/dirent.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef __RTT_DIRENT_H__
-#define __RTT_DIRENT_H__
-
-#include <rtthread.h>
-#include <rtlibc.h>
-
-/*
-* dirent.h - format of directory entries
- * Ref: http://www.opengroup.org/onlinepubs/009695399/basedefs/dirent.h.html
- */
-
-/* File types */
-#define FT_REGULAR      0   /* regular file */
-#define FT_SOCKET       1   /* socket file  */
-#define FT_DIRECTORY    2   /* directory    */
-#define FT_USER         3   /* user defined */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef HAVE_DIR_STRUCTURE
-typedef struct
-{
-    int fd;                         /* directory file */
-    char buf[512];
-    int num;
-    int cur;
-} DIR;
-#endif
-
-#ifndef HAVE_DIRENT_STRUCTURE
-struct dirent
-{
-    rt_uint8_t  d_type;             /* The type of the file */
-    rt_uint8_t  d_namlen;           /* The length of the not including the terminating null file name */
-    rt_uint16_t d_reclen;           /* length of this record */
-    char d_name[256];               /* The null-terminated file name */
-};
-#endif
-
-int            closedir(DIR *);
-DIR           *opendir(const char *);
-struct dirent *readdir(DIR *);
-int            readdir_r(DIR *, struct dirent *, struct dirent **);
-void           rewinddir(DIR *);
-void           seekdir(DIR *, long int);
-long           telldir(DIR *);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/components/libc/compilers/dlib/fcntl.h b/components/libc/compilers/dlib/fcntl.h
deleted file mode 100644
index c4b42083c4..0000000000
--- a/components/libc/compilers/dlib/fcntl.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
diff --git a/components/libc/compilers/dlib/sys/mman.h b/components/libc/compilers/dlib/sys/mman.h
deleted file mode 100644
index 6a260ccd70..0000000000
--- a/components/libc/compilers/dlib/sys/mman.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017/11/30     Bernard      The first version.
- */
-
-#ifndef _SYS_MMAN_H
-#define _SYS_MMAN_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define MAP_FAILED     ((void *) -1)
-
-#define MAP_SHARED     0x01
-#define MAP_PRIVATE    0x02
-#define MAP_TYPE       0x0f
-#define MAP_FIXED      0x10
-#define MAP_ANON       0x20
-#define MAP_ANONYMOUS  MAP_ANON
-#define MAP_NORESERVE  0x4000
-#define MAP_GROWSDOWN  0x0100
-#define MAP_DENYWRITE  0x0800
-#define MAP_EXECUTABLE 0x1000
-#define MAP_LOCKED     0x2000
-#define MAP_POPULATE   0x8000
-#define MAP_NONBLOCK   0x10000
-#define MAP_STACK      0x20000
-#define MAP_HUGETLB    0x40000
-#define MAP_FILE       0
-
-#define PROT_NONE      0
-#define PROT_READ      1
-#define PROT_WRITE     2
-#define PROT_EXEC      4
-#define PROT_GROWSDOWN 0x01000000
-#define PROT_GROWSUP   0x02000000
-
-#define MS_ASYNC       1
-#define MS_INVALIDATE  2
-#define MS_SYNC        4
-
-#define MCL_CURRENT    1
-#define MCL_FUTURE     2
-#define MCL_ONFAULT    4
-
-void *mmap (void *start, size_t len, int prot, int flags, int fd, off_t off);
-int munmap (void *start, size_t len);
-
-#ifdef __cplusplus
-}
-#endif
-#endif
diff --git a/components/libc/compilers/dlib/sys/stat.h b/components/libc/compilers/dlib/sys/stat.h
deleted file mode 100644
index c4b42083c4..0000000000
--- a/components/libc/compilers/dlib/sys/stat.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
diff --git a/components/libc/compilers/dlib/sys/types.h b/components/libc/compilers/dlib/sys/types.h
deleted file mode 100644
index 6e2d1ce839..0000000000
--- a/components/libc/compilers/dlib/sys/types.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-12-16     Meco Man     add useconds_t
- */
-#ifndef __TYPES_H__
-#define __TYPES_H__
-
-#include <stdint.h>
-
-typedef int32_t          clockid_t;
-typedef int32_t          key_t;         /* Used for interprocess communication. */
-typedef int              pid_t;         /* Used for process IDs and process group IDs. */
-typedef unsigned short   uid_t;
-typedef unsigned short   gid_t;
-#ifndef ARCH_CPU_64BIT
-typedef signed int       ssize_t;       /* Used for a count of bytes or an error indication. */
-#else
-typedef long signed int  ssize_t;       /* Used for a count of bytes or an error indication. */
-#endif
-typedef unsigned long    useconds_t;    /* microseconds (unsigned) */
-
-typedef unsigned long    dev_t;
-
-typedef unsigned int     u_int;
-typedef unsigned char    u_char;
-typedef unsigned long    u_long;
-
-#endif
diff --git a/components/libc/compilers/dlib/sys/unistd.h b/components/libc/compilers/dlib/sys/unistd.h
deleted file mode 100644
index 14966a2bad..0000000000
--- a/components/libc/compilers/dlib/sys/unistd.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-12-16     Meco Man     add usleep
- */
-#ifndef _SYS_UNISTD_H
-#define _SYS_UNISTD_H
-
-#include <rtconfig.h>
-#include "types.h"
-
-#ifdef RT_USING_DFS
-
-#define STDIN_FILENO    0       /* standard input file descriptor */
-#define STDOUT_FILENO   1       /* standard output file descriptor */
-#define STDERR_FILENO   2       /* standard error file descriptor */
-
-#include <dfs_posix.h>
-#else
-#define _FREAD      0x0001  /* read enabled */
-#define _FWRITE     0x0002  /* write enabled */
-#define _FAPPEND    0x0008  /* append (writes guaranteed at the end) */
-#define _FMARK      0x0010  /* internal; mark during gc() */
-#define _FDEFER     0x0020  /* internal; defer for next gc pass */
-#define _FASYNC     0x0040  /* signal pgrp when data ready */
-#define _FSHLOCK    0x0080  /* BSD flock() shared lock present */
-#define _FEXLOCK    0x0100  /* BSD flock() exclusive lock present */
-#define _FCREAT     0x0200  /* open with file create */
-#define _FTRUNC     0x0400  /* open with truncation */
-#define _FEXCL      0x0800  /* error on open if file exists */
-#define _FNBIO      0x1000  /* non blocking I/O (sys5 style) */
-#define _FSYNC      0x2000  /* do all writes synchronously */
-#define _FNONBLOCK  0x4000  /* non blocking I/O (POSIX style) */
-#define _FNDELAY    _FNONBLOCK  /* non blocking I/O (4.2 style) */
-#define _FNOCTTY    0x8000  /* don't assign a ctty on this open */
-
-#endif
-
-
-int     isatty      (int fd);
-char *  ttyname     (int desc);
-
-unsigned int sleep(unsigned int seconds);
-int usleep(useconds_t usec);
-
-pid_t getpid(void);
-pid_t getppid(void);
-uid_t getuid(void);
-uid_t geteuid(void);
-gid_t getgid(void);
-gid_t getegid(void);
-
-#endif /* _SYS_UNISTD_H */
diff --git a/components/libc/compilers/dlib/unistd.h b/components/libc/compilers/dlib/unistd.h
deleted file mode 100644
index 72b9d538ec..0000000000
--- a/components/libc/compilers/dlib/unistd.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef _UNISTD_H_
-#define _UNISTD_H_
-
-# include "sys/unistd.h"
-
-#endif /* _UNISTD_H_ */
diff --git a/components/libc/compilers/newlib/sys/dirent.h b/components/libc/compilers/newlib/sys/dirent.h
deleted file mode 100644
index bfba586093..0000000000
--- a/components/libc/compilers/newlib/sys/dirent.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef __RTT_DIRENT_H__
-#define __RTT_DIRENT_H__
-
-#include <rtthread.h>
-
-/*
-* dirent.h - format of directory entries
- * Ref: http://www.opengroup.org/onlinepubs/009695399/basedefs/dirent.h.html
- */
-
-/* File types */
-#define FT_REGULAR      0   /* regular file */
-#define FT_SOCKET       1   /* socket file  */
-#define FT_DIRECTORY    2   /* directory    */
-#define FT_USER         3   /* user defined */
-
-#define DT_UNKNOWN      0x00
-#define DT_REG          0x01
-#define DT_DIR          0x02
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef HAVE_DIR_STRUCTURE
-typedef struct
-{
-    int fd;                         /* directory file */
-    char buf[512];
-    int num;
-    int cur;
-} DIR;
-#endif
-
-#ifndef HAVE_DIRENT_STRUCTURE
-struct dirent
-{
-    rt_uint8_t  d_type;             /* The type of the file */
-    rt_uint8_t  d_namlen;           /* The length of the not including the terminating null file name */
-    rt_uint16_t d_reclen;           /* length of this record */
-    char d_name[256];               /* The null-terminated file name */
-};
-#endif
-
-int            closedir(DIR *);
-DIR           *opendir(const char *);
-struct dirent *readdir(DIR *);
-int            readdir_r(DIR *, struct dirent *, struct dirent **);
-void           rewinddir(DIR *);
-void           seekdir(DIR *, long int);
-long           telldir(DIR *);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/components/libc/compilers/newlib/sys/mman.h b/components/libc/compilers/newlib/sys/mman.h
deleted file mode 100644
index 6a260ccd70..0000000000
--- a/components/libc/compilers/newlib/sys/mman.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017/11/30     Bernard      The first version.
- */
-
-#ifndef _SYS_MMAN_H
-#define _SYS_MMAN_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define MAP_FAILED     ((void *) -1)
-
-#define MAP_SHARED     0x01
-#define MAP_PRIVATE    0x02
-#define MAP_TYPE       0x0f
-#define MAP_FIXED      0x10
-#define MAP_ANON       0x20
-#define MAP_ANONYMOUS  MAP_ANON
-#define MAP_NORESERVE  0x4000
-#define MAP_GROWSDOWN  0x0100
-#define MAP_DENYWRITE  0x0800
-#define MAP_EXECUTABLE 0x1000
-#define MAP_LOCKED     0x2000
-#define MAP_POPULATE   0x8000
-#define MAP_NONBLOCK   0x10000
-#define MAP_STACK      0x20000
-#define MAP_HUGETLB    0x40000
-#define MAP_FILE       0
-
-#define PROT_NONE      0
-#define PROT_READ      1
-#define PROT_WRITE     2
-#define PROT_EXEC      4
-#define PROT_GROWSDOWN 0x01000000
-#define PROT_GROWSUP   0x02000000
-
-#define MS_ASYNC       1
-#define MS_INVALIDATE  2
-#define MS_SYNC        4
-
-#define MCL_CURRENT    1
-#define MCL_FUTURE     2
-#define MCL_ONFAULT    4
-
-void *mmap (void *start, size_t len, int prot, int flags, int fd, off_t off);
-int munmap (void *start, size_t len);
-
-#ifdef __cplusplus
-}
-#endif
-#endif
diff --git a/components/libc/compilers/newlib/sys/statfs.h b/components/libc/compilers/newlib/sys/statfs.h
deleted file mode 100644
index 0996af9a18..0000000000
--- a/components/libc/compilers/newlib/sys/statfs.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef __RTT_STATFS_H__
-#define __RTT_STATFS_H__
-
-#include <rtthread.h>
-
-struct statfs
-{
-    rt_size_t f_bsize;   /* block size */
-    rt_size_t f_blocks;  /* total data blocks in file system */
-    rt_size_t f_bfree;   /* free blocks in file system */
-};
-
-#endif
diff --git a/components/libc/compilers/newlib/sys/termios.h b/components/libc/compilers/newlib/sys/termios.h
deleted file mode 100644
index c4b42083c4..0000000000
--- a/components/libc/compilers/newlib/sys/termios.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
diff --git a/include/rtlibc.h b/include/rtlibc.h
index 5a260d250d..6f6777a2f3 100644
--- a/include/rtlibc.h
+++ b/include/rtlibc.h
@@ -23,11 +23,6 @@
 #include "libc/libc_limits.h"
 #include "libc/libc_stdio.h"
 
-#if defined(__CC_ARM) || defined(__CLANG_ARM) || defined(__IAR_SYSTEMS_ICC__)
-typedef signed long off_t;
-typedef int mode_t;
-#endif
-
 #if defined(__MINGW32__) || defined(_WIN32)
 typedef signed long off_t;
 typedef int mode_t;
-- 
cgit v1.3.1


From bc25c8a6e87e0f070152985eda47a3648390881f Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 18 Apr 2021 00:55:32 +0800
Subject: update sconscript

---
 components/libc/compilers/common_except_gcc/SConscript | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common_except_gcc/SConscript b/components/libc/compilers/common_except_gcc/SConscript
index bda0d5610f..346e69b478 100644
--- a/components/libc/compilers/common_except_gcc/SConscript
+++ b/components/libc/compilers/common_except_gcc/SConscript
@@ -2,12 +2,12 @@ from building import *
 
 Import('rtconfig')
 
-if rtconfig.PLATFORM == 'iar' or rtconfig.PLATFORM == 'armcc' or rtconfig.PLATFORM == 'armclang':
-    src   = []
-    cwd   = GetCurrentDir()
-    CPPPATH = [cwd]
-    group = []
-    src += Glob('*.c')
+src   = []
+cwd   = GetCurrentDir()
+CPPPATH = [cwd]
+group = []
+src += Glob('*.c')
 
+if rtconfig.PLATFORM != 'gcc':
     group = DefineGroup('libc', src, depend = ['RT_USING_LIBC'], CPPPATH = CPPPATH)
-    Return('group')
+Return('group')
-- 
cgit v1.3.1


From 926cd865892cfbb9b474d36cfd046688d92ecc37 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 18 Apr 2021 01:36:35 +0800
Subject: remove dlib and armlibc sys folder

---
 components/libc/compilers/armlibc/sys/README.md       |  1 -
 components/libc/compilers/armlibc/sys/errno.h         | 14 --------------
 components/libc/compilers/common_except_gcc/readme.md |  3 +++
 components/libc/compilers/dlib/sys/README.md          |  1 -
 components/libc/compilers/dlib/sys/errno.h            | 16 ----------------
 components/libc/compilers/dlib/sys/signal.h           | 16 ----------------
 6 files changed, 3 insertions(+), 48 deletions(-)
 delete mode 100644 components/libc/compilers/armlibc/sys/README.md
 delete mode 100644 components/libc/compilers/armlibc/sys/errno.h
 create mode 100644 components/libc/compilers/common_except_gcc/readme.md
 delete mode 100644 components/libc/compilers/dlib/sys/README.md
 delete mode 100644 components/libc/compilers/dlib/sys/errno.h
 delete mode 100644 components/libc/compilers/dlib/sys/signal.h

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/armlibc/sys/README.md b/components/libc/compilers/armlibc/sys/README.md
deleted file mode 100644
index 7ad10a7d43..0000000000
--- a/components/libc/compilers/armlibc/sys/README.md
+++ /dev/null
@@ -1 +0,0 @@
-Because Keil MDK leaks some system header file, we put them in here. 
\ No newline at end of file
diff --git a/components/libc/compilers/armlibc/sys/errno.h b/components/libc/compilers/armlibc/sys/errno.h
deleted file mode 100644
index 74cc986f7c..0000000000
--- a/components/libc/compilers/armlibc/sys/errno.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef SYS_ERRNO_H__
-#define SYS_ERRNO_H__
-
-#include <rtthread.h>
-
-#endif
diff --git a/components/libc/compilers/common_except_gcc/readme.md b/components/libc/compilers/common_except_gcc/readme.md
new file mode 100644
index 0000000000..15f8e60d59
--- /dev/null
+++ b/components/libc/compilers/common_except_gcc/readme.md
@@ -0,0 +1,3 @@
+## Attentions
+
+This folder is "common" for armlibc and dlib.
\ No newline at end of file
diff --git a/components/libc/compilers/dlib/sys/README.md b/components/libc/compilers/dlib/sys/README.md
deleted file mode 100644
index 4f0d203180..0000000000
--- a/components/libc/compilers/dlib/sys/README.md
+++ /dev/null
@@ -1 +0,0 @@
-Because IAR leaks some system header file, we put them in here. 
\ No newline at end of file
diff --git a/components/libc/compilers/dlib/sys/errno.h b/components/libc/compilers/dlib/sys/errno.h
deleted file mode 100644
index 54a1d33cd0..0000000000
--- a/components/libc/compilers/dlib/sys/errno.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2019-07-08     Bernard      The first version
- */
-
-#ifndef SYS_ERRNO_H__
-#define SYS_ERRNO_H__
-
-#include <errno.h>
-
-#endif
diff --git a/components/libc/compilers/dlib/sys/signal.h b/components/libc/compilers/dlib/sys/signal.h
deleted file mode 100644
index a30235f2b2..0000000000
--- a/components/libc/compilers/dlib/sys/signal.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2019-07-08     Bernard      The first version
- */
-
-#ifndef SYS_SIGNAL_H__
-#define SYS_SIGNAL_H__
-
-#include <libc/libc_signal.h>
-
-#endif
-- 
cgit v1.3.1


From 40c09fc1e088e1f7a9eb91c85bd30119d4a38822 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Wed, 21 Apr 2021 00:56:36 +0800
Subject: 重新分类为common文件夹下属all文件夹和excgcc文件夹
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/dfs/include/dfs_fs.h                    |   2 +
 components/libc/compilers/common/SConscript        |  15 +
 components/libc/compilers/common/all/SConscript    |  27 +
 components/libc/compilers/common/all/dirent.h      |  65 +++
 components/libc/compilers/common/all/readme.md     |  10 +
 components/libc/compilers/common/all/stdlib.c      |  28 +
 components/libc/compilers/common/all/sys/ioctl.h   |  18 +
 components/libc/compilers/common/all/sys/mman.h    |  60 ++
 components/libc/compilers/common/all/sys/statfs.h  |  21 +
 components/libc/compilers/common/all/sys/termios.h |   8 +
 components/libc/compilers/common/all/sys/time.h    | 101 ++++
 components/libc/compilers/common/all/termios.h     |  19 +
 components/libc/compilers/common/all/time.c        | 643 +++++++++++++++++++++
 components/libc/compilers/common/all/unistd.c      |  88 +++
 components/libc/compilers/common/excgcc/SConscript |  13 +
 components/libc/compilers/common/excgcc/fcntl.h    |  18 +
 components/libc/compilers/common/excgcc/readme.md  |   3 +
 components/libc/compilers/common/excgcc/sys/stat.h |   8 +
 .../libc/compilers/common/excgcc/sys/types.h       |  36 ++
 .../libc/compilers/common/excgcc/sys/unistd.h      |  83 +++
 components/libc/compilers/common/excgcc/unistd.h   |  10 +
 components/libc/compilers/common_all/SConscript    |  27 -
 components/libc/compilers/common_all/dirent.h      |  65 ---
 components/libc/compilers/common_all/readme.md     |  10 -
 components/libc/compilers/common_all/stdlib.c      |  28 -
 components/libc/compilers/common_all/sys/ioctl.h   |  18 -
 components/libc/compilers/common_all/sys/mman.h    |  60 --
 components/libc/compilers/common_all/sys/statfs.h  |  21 -
 components/libc/compilers/common_all/sys/termios.h |   8 -
 components/libc/compilers/common_all/sys/time.h    | 101 ----
 components/libc/compilers/common_all/termios.h     |  19 -
 components/libc/compilers/common_all/time.c        | 643 ---------------------
 components/libc/compilers/common_all/unistd.c      |  88 ---
 .../libc/compilers/common_except_gcc/SConscript    |  13 -
 .../libc/compilers/common_except_gcc/fcntl.h       |  18 -
 .../libc/compilers/common_except_gcc/readme.md     |   3 -
 .../libc/compilers/common_except_gcc/sys/stat.h    |   8 -
 .../libc/compilers/common_except_gcc/sys/types.h   |  36 --
 .../libc/compilers/common_except_gcc/sys/unistd.h  |  83 ---
 .../libc/compilers/common_except_gcc/unistd.h      |  10 -
 include/rtlibc.h                                   |   7 +
 41 files changed, 1283 insertions(+), 1259 deletions(-)
 create mode 100644 components/libc/compilers/common/SConscript
 create mode 100644 components/libc/compilers/common/all/SConscript
 create mode 100644 components/libc/compilers/common/all/dirent.h
 create mode 100644 components/libc/compilers/common/all/readme.md
 create mode 100644 components/libc/compilers/common/all/stdlib.c
 create mode 100644 components/libc/compilers/common/all/sys/ioctl.h
 create mode 100644 components/libc/compilers/common/all/sys/mman.h
 create mode 100644 components/libc/compilers/common/all/sys/statfs.h
 create mode 100644 components/libc/compilers/common/all/sys/termios.h
 create mode 100644 components/libc/compilers/common/all/sys/time.h
 create mode 100644 components/libc/compilers/common/all/termios.h
 create mode 100644 components/libc/compilers/common/all/time.c
 create mode 100644 components/libc/compilers/common/all/unistd.c
 create mode 100644 components/libc/compilers/common/excgcc/SConscript
 create mode 100644 components/libc/compilers/common/excgcc/fcntl.h
 create mode 100644 components/libc/compilers/common/excgcc/readme.md
 create mode 100644 components/libc/compilers/common/excgcc/sys/stat.h
 create mode 100644 components/libc/compilers/common/excgcc/sys/types.h
 create mode 100644 components/libc/compilers/common/excgcc/sys/unistd.h
 create mode 100644 components/libc/compilers/common/excgcc/unistd.h
 delete mode 100644 components/libc/compilers/common_all/SConscript
 delete mode 100644 components/libc/compilers/common_all/dirent.h
 delete mode 100644 components/libc/compilers/common_all/readme.md
 delete mode 100644 components/libc/compilers/common_all/stdlib.c
 delete mode 100644 components/libc/compilers/common_all/sys/ioctl.h
 delete mode 100644 components/libc/compilers/common_all/sys/mman.h
 delete mode 100644 components/libc/compilers/common_all/sys/statfs.h
 delete mode 100644 components/libc/compilers/common_all/sys/termios.h
 delete mode 100644 components/libc/compilers/common_all/sys/time.h
 delete mode 100644 components/libc/compilers/common_all/termios.h
 delete mode 100644 components/libc/compilers/common_all/time.c
 delete mode 100644 components/libc/compilers/common_all/unistd.c
 delete mode 100644 components/libc/compilers/common_except_gcc/SConscript
 delete mode 100644 components/libc/compilers/common_except_gcc/fcntl.h
 delete mode 100644 components/libc/compilers/common_except_gcc/readme.md
 delete mode 100644 components/libc/compilers/common_except_gcc/sys/stat.h
 delete mode 100644 components/libc/compilers/common_except_gcc/sys/types.h
 delete mode 100644 components/libc/compilers/common_except_gcc/sys/unistd.h
 delete mode 100644 components/libc/compilers/common_except_gcc/unistd.h

(limited to 'components/libc/compilers')

diff --git a/components/dfs/include/dfs_fs.h b/components/dfs/include/dfs_fs.h
index ed0600f1f7..828f15a0f5 100644
--- a/components/dfs/include/dfs_fs.h
+++ b/components/dfs/include/dfs_fs.h
@@ -12,7 +12,9 @@
 #define __DFS_FS_H__
 
 #include <dfs.h>
+#ifdef RT_USING_LIBC
 #include <sys/types.h>
+#endif
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/components/libc/compilers/common/SConscript b/components/libc/compilers/common/SConscript
new file mode 100644
index 0000000000..4c815c49b8
--- /dev/null
+++ b/components/libc/compilers/common/SConscript
@@ -0,0 +1,15 @@
+# RT-Thread building script for bridge
+
+import os
+from building import *
+
+cwd = GetCurrentDir()
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')
diff --git a/components/libc/compilers/common/all/SConscript b/components/libc/compilers/common/all/SConscript
new file mode 100644
index 0000000000..319e1a3555
--- /dev/null
+++ b/components/libc/compilers/common/all/SConscript
@@ -0,0 +1,27 @@
+from building import *
+
+Import('rtconfig')
+
+src   = []
+cwd   = GetCurrentDir()
+group = []
+CPPPATH = [cwd]
+
+if GetDepend('RT_USING_LIBC'):
+    src += Glob('*.c')
+else:
+    if GetDepend('RT_LIBC_USING_TIME'):
+        src += ['time.c']
+
+if GetDepend('RT_USING_POSIX') == False:
+    SrcRemove(src, ['unistd.c'])
+
+if rtconfig.CROSS_TOOL == 'keil':
+    CPPDEFINES = ['__CLK_TCK=RT_TICK_PER_SECOND']
+else:
+    CPPDEFINES = []
+
+if GetDepend('RT_USING_LIBC') or GetDepend('RT_LIBC_USING_TIME'):
+    group = DefineGroup('libc', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
+
+Return('group')
diff --git a/components/libc/compilers/common/all/dirent.h b/components/libc/compilers/common/all/dirent.h
new file mode 100644
index 0000000000..bfba586093
--- /dev/null
+++ b/components/libc/compilers/common/all/dirent.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef __RTT_DIRENT_H__
+#define __RTT_DIRENT_H__
+
+#include <rtthread.h>
+
+/*
+* dirent.h - format of directory entries
+ * Ref: http://www.opengroup.org/onlinepubs/009695399/basedefs/dirent.h.html
+ */
+
+/* File types */
+#define FT_REGULAR      0   /* regular file */
+#define FT_SOCKET       1   /* socket file  */
+#define FT_DIRECTORY    2   /* directory    */
+#define FT_USER         3   /* user defined */
+
+#define DT_UNKNOWN      0x00
+#define DT_REG          0x01
+#define DT_DIR          0x02
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef HAVE_DIR_STRUCTURE
+typedef struct
+{
+    int fd;                         /* directory file */
+    char buf[512];
+    int num;
+    int cur;
+} DIR;
+#endif
+
+#ifndef HAVE_DIRENT_STRUCTURE
+struct dirent
+{
+    rt_uint8_t  d_type;             /* The type of the file */
+    rt_uint8_t  d_namlen;           /* The length of the not including the terminating null file name */
+    rt_uint16_t d_reclen;           /* length of this record */
+    char d_name[256];               /* The null-terminated file name */
+};
+#endif
+
+int            closedir(DIR *);
+DIR           *opendir(const char *);
+struct dirent *readdir(DIR *);
+int            readdir_r(DIR *, struct dirent *, struct dirent **);
+void           rewinddir(DIR *);
+void           seekdir(DIR *, long int);
+long           telldir(DIR *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/components/libc/compilers/common/all/readme.md b/components/libc/compilers/common/all/readme.md
new file mode 100644
index 0000000000..81bb005d0a
--- /dev/null
+++ b/components/libc/compilers/common/all/readme.md
@@ -0,0 +1,10 @@
+## Attentions
+
+1. This folder is "common" for armlibc newlibc and dlib.
+
+2. If you want to add new `.c` files, please do not forget to fix SConscript file too. eg:
+
+```python
+if GetDepend('RT_USING_POSIX') == False:
+        SrcRemove(src, ['unistd.c'])
+```
\ No newline at end of file
diff --git a/components/libc/compilers/common/all/stdlib.c b/components/libc/compilers/common/all/stdlib.c
new file mode 100644
index 0000000000..9d8952e99e
--- /dev/null
+++ b/components/libc/compilers/common/all/stdlib.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-02-15     Meco Man     first version
+ */
+
+#include <rtthread.h>
+
+void __rt_libc_exit(int status)
+{
+    rt_thread_t self = rt_thread_self();
+
+    if (self != RT_NULL)
+    {
+        rt_kprintf("thread:%s exit:%d!\n", self->name, status);
+        rt_thread_control(self, RT_THREAD_CTRL_CLOSE, RT_NULL);
+    }
+}
+
+int __rt_libc_system(const char *string)
+{
+    /* TODO */
+    return 0;
+}
diff --git a/components/libc/compilers/common/all/sys/ioctl.h b/components/libc/compilers/common/all/sys/ioctl.h
new file mode 100644
index 0000000000..648d90230d
--- /dev/null
+++ b/components/libc/compilers/common/all/sys/ioctl.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-01     Meco Man     First Version
+ */
+#ifndef _SYS_IOCTL_H
+#define _SYS_IOCTL_H
+
+#include <rtconfig.h>
+#ifdef RT_USING_POSIX
+#include <dfs_posix.h>
+#endif
+
+#endif
diff --git a/components/libc/compilers/common/all/sys/mman.h b/components/libc/compilers/common/all/sys/mman.h
new file mode 100644
index 0000000000..a9235d61f0
--- /dev/null
+++ b/components/libc/compilers/common/all/sys/mman.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017/11/30     Bernard      The first version.
+ */
+
+#ifndef _SYS_MMAN_H
+#define _SYS_MMAN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <sys/types.h>
+    
+#define MAP_FAILED     ((void *) -1)
+
+#define MAP_SHARED     0x01
+#define MAP_PRIVATE    0x02
+#define MAP_TYPE       0x0f
+#define MAP_FIXED      0x10
+#define MAP_ANON       0x20
+#define MAP_ANONYMOUS  MAP_ANON
+#define MAP_NORESERVE  0x4000
+#define MAP_GROWSDOWN  0x0100
+#define MAP_DENYWRITE  0x0800
+#define MAP_EXECUTABLE 0x1000
+#define MAP_LOCKED     0x2000
+#define MAP_POPULATE   0x8000
+#define MAP_NONBLOCK   0x10000
+#define MAP_STACK      0x20000
+#define MAP_HUGETLB    0x40000
+#define MAP_FILE       0
+
+#define PROT_NONE      0
+#define PROT_READ      1
+#define PROT_WRITE     2
+#define PROT_EXEC      4
+#define PROT_GROWSDOWN 0x01000000
+#define PROT_GROWSUP   0x02000000
+
+#define MS_ASYNC       1
+#define MS_INVALIDATE  2
+#define MS_SYNC        4
+
+#define MCL_CURRENT    1
+#define MCL_FUTURE     2
+#define MCL_ONFAULT    4
+
+void *mmap (void *start, size_t len, int prot, int flags, int fd, off_t off);
+int munmap (void *start, size_t len);
+
+#ifdef __cplusplus
+}
+#endif
+#endif
diff --git a/components/libc/compilers/common/all/sys/statfs.h b/components/libc/compilers/common/all/sys/statfs.h
new file mode 100644
index 0000000000..0996af9a18
--- /dev/null
+++ b/components/libc/compilers/common/all/sys/statfs.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef __RTT_STATFS_H__
+#define __RTT_STATFS_H__
+
+#include <rtthread.h>
+
+struct statfs
+{
+    rt_size_t f_bsize;   /* block size */
+    rt_size_t f_blocks;  /* total data blocks in file system */
+    rt_size_t f_bfree;   /* free blocks in file system */
+};
+
+#endif
diff --git a/components/libc/compilers/common/all/sys/termios.h b/components/libc/compilers/common/all/sys/termios.h
new file mode 100644
index 0000000000..c4b42083c4
--- /dev/null
+++ b/components/libc/compilers/common/all/sys/termios.h
@@ -0,0 +1,8 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
diff --git a/components/libc/compilers/common/all/sys/time.h b/components/libc/compilers/common/all/sys/time.h
new file mode 100644
index 0000000000..ef1c810608
--- /dev/null
+++ b/components/libc/compilers/common/all/sys/time.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-07     Meco Man     combine gcc armcc iccarm
+ * 2021-02-12     Meco Man     move all definitions located in <clock_time.h> to this file
+ */
+#ifndef _SYS_TIME_H_
+#define _SYS_TIME_H_
+
+#include <rtconfig.h>
+#include <time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Skip define timespec for IAR version over 8.10.1 where __VER__ is 8010001.
+ */
+#if defined ( __ICCARM__ ) && (__VER__ >= 8010001)
+#define _TIMESPEC_DEFINED
+#endif
+
+
+#ifndef _TIMEVAL_DEFINED
+#define _TIMEVAL_DEFINED
+/*
+ * Structure returned by gettimeofday(2) system call,
+ * and used in other calls.
+ */
+#if !(defined(_WIN32))
+struct timeval {
+    long    tv_sec;     /* seconds */
+    long    tv_usec;    /* and microseconds */
+};
+#endif
+#endif /* _TIMEVAL_DEFINED */
+
+#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && !defined (__ICCARM__) && !defined (_WIN32)
+struct timespec {
+    time_t  tv_sec;     /* seconds */
+    long    tv_nsec;    /* and nanoseconds */
+};
+#endif
+
+struct timezone {
+  int tz_minuteswest;   /* minutes west of Greenwich */
+  int tz_dsttime;       /* type of dst correction */
+};
+
+int stime(const time_t *t);
+time_t timegm(struct tm * const t);
+int gettimeofday(struct timeval *tv, struct timezone *tz);
+int settimeofday(const struct timeval *tv, const struct timezone *tz);
+#if defined(__ARMCC_VERSION) || defined (__ICCARM__)
+struct tm *gmtime_r(const time_t *timep, struct tm *r);
+#endif
+
+#ifdef RT_USING_POSIX
+#include <sys/types.h>
+/* posix clock and timer */
+#define MILLISECOND_PER_SECOND  1000UL
+#define MICROSECOND_PER_SECOND  1000000UL
+#define NANOSECOND_PER_SECOND   1000000000UL
+
+#define MILLISECOND_PER_TICK    (MILLISECOND_PER_SECOND / RT_TICK_PER_SECOND)
+#define MICROSECOND_PER_TICK    (MICROSECOND_PER_SECOND / RT_TICK_PER_SECOND)
+#define NANOSECOND_PER_TICK     (NANOSECOND_PER_SECOND  / RT_TICK_PER_SECOND)
+
+#ifndef CLOCK_REALTIME
+#define CLOCK_REALTIME      1
+#endif
+
+#define CLOCK_CPUTIME_ID    2
+
+#ifndef CLOCK_PROCESS_CPUTIME_ID
+#define CLOCK_PROCESS_CPUTIME_ID CLOCK_CPUTIME_ID
+#endif
+#ifndef CLOCK_THREAD_CPUTIME_ID
+#define CLOCK_THREAD_CPUTIME_ID  CLOCK_CPUTIME_ID
+#endif
+
+#ifndef CLOCK_MONOTONIC
+#define CLOCK_MONOTONIC     4
+#endif
+
+int clock_getres  (clockid_t clockid, struct timespec *res);
+int clock_gettime (clockid_t clockid, struct timespec *tp);
+int clock_settime (clockid_t clockid, const struct timespec *tp);
+int clock_time_to_tick(const struct timespec *time);
+#endif /* RT_USING_POSIX */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_TIME_H_ */
diff --git a/components/libc/compilers/common/all/termios.h b/components/libc/compilers/common/all/termios.h
new file mode 100644
index 0000000000..2960d52c58
--- /dev/null
+++ b/components/libc/compilers/common/all/termios.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef _TERMIOS_H__
+#define _TERMIOS_H__
+
+#include <rtconfig.h>
+
+#ifdef RT_USING_POSIX_TERMIOS
+#include <sys/types.h>
+#include <posix_termios.h>
+#endif
+
+#endif
diff --git a/components/libc/compilers/common/all/time.c b/components/libc/compilers/common/all/time.c
new file mode 100644
index 0000000000..33d8907165
--- /dev/null
+++ b/components/libc/compilers/common/all/time.c
@@ -0,0 +1,643 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2019-08-21     zhangjun     copy from minilibc
+ * 2020-09-07     Meco Man     combine gcc armcc iccarm
+ * 2021-02-05     Meco Man     add timegm()
+ * 2021-02-07     Meco Man     fixed gettimeofday()
+ * 2021-02-08     Meco Man     add settimeofday() stime()
+ * 2021-02-10     Meco Man     add ctime_r() and re-implement ctime()
+ * 2021-02-11     Meco Man     fix bug #3183 - align days[] and months[] to 4 bytes
+ * 2021-02-12     Meco Man     add errno
+ * 2012-12-08     Bernard      <clock_time.c> fix the issue of _timevalue.tv_usec initialization,
+ *                             which found by Rob <rdent@iinet.net.au>
+ * 2021-02-12     Meco Man     move all of the functions located in <clock_time.c> to this file
+ * 2021-03-15     Meco Man     fixed bug: https://club.rt-thread.org/ask/question/423650.html
+ */
+
+#include <sys/time.h>
+#include <rtthread.h>
+
+#ifdef RT_USING_DEVICE
+#include <rtdevice.h>
+#endif
+
+#define DBG_TAG    "TIME"
+#define DBG_LVL    DBG_INFO
+#include <rtdbg.h>
+
+/* seconds per day */
+#define SPD 24*60*60
+
+/* days per month -- nonleap! */
+static const short __spm[13] =
+{
+    0,
+    (31),
+    (31 + 28),
+    (31 + 28 + 31),
+    (31 + 28 + 31 + 30),
+    (31 + 28 + 31 + 30 + 31),
+    (31 + 28 + 31 + 30 + 31 + 30),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31),
+};
+
+ALIGN(4) static const char days[] = "Sun Mon Tue Wed Thu Fri Sat ";
+ALIGN(4) static const char months[] = "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ";
+
+static int __isleap(int year)
+{
+    /* every fourth year is a leap year except for century years that are
+     * not divisible by 400. */
+    /*  return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); */
+    return (!(year % 4) && ((year % 100) || !(year % 400)));
+}
+
+static void num2str(char *c, int i)
+{
+    c[0] = i / 10 + '0';
+    c[1] = i % 10 + '0';
+}
+
+/**
+ * Get time from RTC device (without timezone)
+ * @param tv: struct timeval
+ * @return -1 failure; 1 success
+ */
+static int get_timeval(struct timeval *tv)
+{
+#ifdef RT_USING_RTC
+    static rt_device_t device = RT_NULL;
+    rt_err_t rst = -RT_ERROR;
+
+    if (tv == RT_NULL)
+        return -1;
+
+    /* default is 0 */
+    tv->tv_sec = 0;
+    tv->tv_usec = 0;
+
+    /* optimization: find rtc device only first */
+    if (device == RT_NULL)
+    {
+        device = rt_device_find("rtc");
+    }
+
+    /* read timestamp from RTC device */
+    if (device != RT_NULL)
+    {
+        if (rt_device_open(device, 0) == RT_EOK)
+        {
+            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &tv->tv_sec);
+            rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME_US, &tv->tv_usec);
+            rt_device_close(device);
+        }
+    }
+    else
+    {
+        /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
+        rt_kprintf("Cannot find a RTC device to provide time!\r\n");
+        return -1;
+    }
+
+    return (rst < 0) ? -1 : 1;
+
+#else
+    /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
+    rt_kprintf("Cannot find a RTC device to provide time!\r\n");
+    return -1;
+#endif /* RT_USING_RTC */
+}
+
+/**
+ * Set time to RTC device (without timezone)
+ * @param tv: struct timeval
+ * @return -1 failure; 1 success
+ */
+static int set_timeval(struct timeval *tv)
+{
+#ifdef RT_USING_RTC
+    static rt_device_t device = RT_NULL;
+    rt_err_t rst = -RT_ERROR;
+
+    if (tv == RT_NULL)
+        return -1;
+
+    /* optimization: find rtc device only first */
+    if (device == RT_NULL)
+    {
+        device = rt_device_find("rtc");
+    }
+
+    /* read timestamp from RTC device */
+    if (device != RT_NULL)
+    {
+        if (rt_device_open(device, 0) == RT_EOK)
+        {
+            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &tv->tv_sec);
+            rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME_US, &tv->tv_usec);
+            rt_device_close(device);
+        }
+    }
+    else
+    {
+        LOG_W("Cannot find a RTC device to provide time!");
+        return -1;
+    }
+
+    return (rst < 0) ? -1 : 1;
+
+#else
+    LOG_W("Cannot find a RTC device to provide time!");
+    return -1;
+#endif /* RT_USING_RTC */
+}
+
+struct tm *gmtime_r(const time_t *timep, struct tm *r)
+{
+    time_t i;
+    register time_t work = *timep % (SPD);
+    r->tm_sec = work % 60;
+    work /= 60;
+    r->tm_min = work % 60;
+    r->tm_hour = work / 60;
+    work = *timep / (SPD);
+    r->tm_wday = (4 + work) % 7;
+    for (i = 1970;; ++i)
+    {
+        register time_t k = __isleap(i) ? 366 : 365;
+        if (work >= k)
+            work -= k;
+        else
+            break;
+    }
+    r->tm_year = i - 1900;
+    r->tm_yday = work;
+
+    r->tm_mday = 1;
+    if (__isleap(i) && (work > 58))
+    {
+        if (work == 59)
+            r->tm_mday = 2; /* 29.2. */
+        work -= 1;
+    }
+
+    for (i = 11; i && (__spm[i] > work); --i)
+        ;
+    r->tm_mon = i;
+    r->tm_mday += work - __spm[i];
+
+    r->tm_isdst = 0;
+    return r;
+}
+RTM_EXPORT(gmtime_r);
+
+struct tm* gmtime(const time_t* t)
+{
+    static struct tm tmp;
+    return gmtime_r(t, &tmp);
+}
+RTM_EXPORT(gmtime);
+
+/*TODO: timezone */
+struct tm* localtime_r(const time_t* t, struct tm* r)
+{
+    time_t local_tz;
+    int utc_plus;
+
+    utc_plus = 8; /* GMT: UTC+8 */
+    local_tz = *t + utc_plus * 3600;
+    return gmtime_r(&local_tz, r);
+}
+RTM_EXPORT(localtime_r);
+
+struct tm* localtime(const time_t* t)
+{
+    static struct tm tmp;
+    return localtime_r(t, &tmp);
+}
+RTM_EXPORT(localtime);
+
+/* TODO: timezone */
+time_t mktime(struct tm * const t)
+{
+    time_t timestamp;
+    int utc_plus;
+
+    utc_plus = 8; /* GMT: UTC+8 */
+    timestamp = timegm(t);
+    timestamp = timestamp - 3600 * utc_plus;
+    return timestamp;
+}
+RTM_EXPORT(mktime);
+
+char* asctime_r(const struct tm *t, char *buf)
+{
+    /* "Wed Jun 30 21:49:08 1993\n" */
+    *(int*) buf = *(int*) (days + (t->tm_wday << 2));
+    *(int*) (buf + 4) = *(int*) (months + (t->tm_mon << 2));
+    num2str(buf + 8, t->tm_mday);
+    if (buf[8] == '0')
+        buf[8] = ' ';
+    buf[10] = ' ';
+    num2str(buf + 11, t->tm_hour);
+    buf[13] = ':';
+    num2str(buf + 14, t->tm_min);
+    buf[16] = ':';
+    num2str(buf + 17, t->tm_sec);
+    buf[19] = ' ';
+    num2str(buf + 20, (t->tm_year + 1900) / 100);
+    num2str(buf + 22, (t->tm_year + 1900) % 100);
+    buf[24] = '\n';
+    buf[25] = '\0';
+    return buf;
+}
+RTM_EXPORT(asctime_r);
+
+char* asctime(const struct tm *timeptr)
+{
+    static char buf[26];
+    return asctime_r(timeptr, buf);
+}
+RTM_EXPORT(asctime);
+
+char *ctime_r (const time_t * tim_p, char * result)
+{
+    struct tm tm;
+    return asctime_r (localtime_r (tim_p, &tm), result);
+}
+RTM_EXPORT(ctime_r);
+
+char* ctime(const time_t *tim_p)
+{
+    return asctime (localtime (tim_p));
+}
+RTM_EXPORT(ctime);
+
+/**
+ * Returns the current time.
+ *
+ * @param time_t * t the timestamp pointer, if not used, keep NULL.
+ *
+ * @return The value ((time_t)-1) is returned if the calendar time is not available.
+ *         If timer is not a NULL pointer, the return value is also stored in timer.
+ *
+ */
+RT_WEAK time_t time(time_t *t)
+{
+    struct timeval now;
+
+    if(get_timeval(&now) > 0)
+    {
+        if (t)
+        {
+            *t = now.tv_sec;
+        }
+        return now.tv_sec;
+    }
+    else
+    {
+        errno = EFAULT;
+        return ((time_t)-1);
+    }
+}
+RTM_EXPORT(time);
+
+RT_WEAK clock_t clock(void)
+{
+    return rt_tick_get();
+}
+RTM_EXPORT(clock);
+
+int stime(const time_t *t)
+{
+    struct timeval tv;
+
+    if (!t)
+    {
+        errno = EFAULT;
+        return -1;
+    }
+
+    tv.tv_sec = *t;
+    if (set_timeval(&tv) > 0)
+    {
+        return 0;
+    }
+    else
+    {
+        errno = EFAULT;
+        return -1;
+    }
+}
+RTM_EXPORT(stime);
+
+time_t timegm(struct tm * const t)
+{
+    register time_t day;
+    register time_t i;
+    register time_t years = t->tm_year - 70;
+
+    if (t->tm_sec > 60)
+    {
+        t->tm_min += t->tm_sec / 60;
+        t->tm_sec %= 60;
+    }
+    if (t->tm_min > 60)
+    {
+        t->tm_hour += t->tm_min / 60;
+        t->tm_min %= 60;
+    }
+    if (t->tm_hour > 24)
+    {
+        t->tm_mday += t->tm_hour / 24;
+        t->tm_hour %= 24;
+    }
+    if (t->tm_mon > 12)
+    {
+        t->tm_year += t->tm_mon / 12;
+        t->tm_mon %= 12;
+    }
+    while (t->tm_mday > __spm[1 + t->tm_mon])
+    {
+        if (t->tm_mon == 1 && __isleap(t->tm_year + 1900))
+        {
+            --t->tm_mday;
+        }
+        t->tm_mday -= __spm[t->tm_mon];
+        ++t->tm_mon;
+        if (t->tm_mon > 11)
+        {
+            t->tm_mon = 0;
+            ++t->tm_year;
+        }
+    }
+
+    if (t->tm_year < 70)
+        return (time_t) - 1;
+
+    /* Days since 1970 is 365 * number of years + number of leap years since 1970 */
+    day = years * 365 + (years + 1) / 4;
+
+    /* After 2100 we have to substract 3 leap years for every 400 years
+     This is not intuitive. Most mktime implementations do not support
+     dates after 2059, anyway, so we might leave this out for it's
+     bloat. */
+    if (years >= 131)
+    {
+        years -= 131;
+        years /= 100;
+        day -= (years >> 2) * 3 + 1;
+        if ((years &= 3) == 3)
+            years--;
+        day -= years;
+    }
+
+    day += t->tm_yday = __spm[t->tm_mon] + t->tm_mday - 1 +
+                        (__isleap(t->tm_year + 1900) & (t->tm_mon > 1));
+
+    /* day is now the number of days since 'Jan 1 1970' */
+    i = 7;
+    t->tm_wday = (day + 4) % i; /* Sunday=0, Monday=1, ..., Saturday=6 */
+
+    i = 24;
+    day *= i;
+    i = 60;
+    return ((day + t->tm_hour) * i + t->tm_min) * i + t->tm_sec;
+}
+RTM_EXPORT(timegm);
+
+/* TODO: timezone */
+int gettimeofday(struct timeval *tv, struct timezone *tz)
+{
+    if (tv != RT_NULL && get_timeval(tv) > 0)
+    {
+        return 0;
+    }
+    else
+    {
+        errno = EFAULT;
+        return -1;
+    }
+}
+RTM_EXPORT(gettimeofday);
+
+/* TODO: timezone */
+int settimeofday(const struct timeval *tv, const struct timezone *tz)
+{
+    if (tv != RT_NULL)
+    {
+        if(tv->tv_sec >= 0 && tv->tv_usec >= 0)
+        {
+            if(set_timeval((struct timeval *)tv) > 0)
+            {
+                return 0;
+            }
+            else
+            {
+                errno = EFAULT;
+                return -1;
+            }
+        }
+        else
+        {
+            errno = EINVAL;
+            return -1;
+        }
+    }
+    else
+    {
+        errno = EFAULT;
+        return -1;
+    }
+}
+RTM_EXPORT(settimeofday);
+
+/* inherent in the toolchain */
+RTM_EXPORT(difftime);
+RTM_EXPORT(strftime);
+
+#ifdef RT_USING_POSIX
+static struct timeval _timevalue;
+static int clock_time_system_init()
+{
+    time_t time;
+    rt_tick_t tick;
+    rt_device_t device;
+
+    time = 0;
+    device = rt_device_find("rtc");
+    if (device != RT_NULL)
+    {
+        /* get realtime seconds */
+        rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time);
+    }
+
+    /* get tick */
+    tick = rt_tick_get();
+
+    _timevalue.tv_usec = (tick%RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
+    _timevalue.tv_sec = time - tick/RT_TICK_PER_SECOND - 1;
+
+    return 0;
+}
+INIT_COMPONENT_EXPORT(clock_time_system_init);
+
+int clock_getres(clockid_t clockid, struct timespec *res)
+{
+    int ret = 0;
+
+    if (res == RT_NULL)
+    {
+        rt_set_errno(EINVAL);
+        return -1;
+    }
+
+    switch (clockid)
+    {
+    case CLOCK_REALTIME:
+        res->tv_sec = 0;
+        res->tv_nsec = NANOSECOND_PER_SECOND/RT_TICK_PER_SECOND;
+        break;
+
+#ifdef RT_USING_CPUTIME
+    case CLOCK_CPUTIME_ID:
+        res->tv_sec  = 0;
+        res->tv_nsec = clock_cpu_getres();
+        break;
+#endif
+
+    default:
+        ret = -1;
+        rt_set_errno(EINVAL);
+        break;
+    }
+
+    return ret;
+}
+RTM_EXPORT(clock_getres);
+
+int clock_gettime(clockid_t clockid, struct timespec *tp)
+{
+    int ret = 0;
+
+    if (tp == RT_NULL)
+    {
+        rt_set_errno(EINVAL);
+        return -1;
+    }
+
+    switch (clockid)
+    {
+    case CLOCK_REALTIME:
+        {
+            /* get tick */
+            int tick = rt_tick_get();
+
+            tp->tv_sec  = _timevalue.tv_sec + tick / RT_TICK_PER_SECOND;
+            tp->tv_nsec = (_timevalue.tv_usec + (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK) * 1000;
+        }
+        break;
+
+#ifdef RT_USING_CPUTIME
+    case CLOCK_CPUTIME_ID:
+        {
+            float unit = 0;
+            long long cpu_tick;
+
+            unit = clock_cpu_getres();
+            cpu_tick = clock_cpu_gettime();
+
+            tp->tv_sec  = ((int)(cpu_tick * unit)) / NANOSECOND_PER_SECOND;
+            tp->tv_nsec = ((int)(cpu_tick * unit)) % NANOSECOND_PER_SECOND;
+        }
+        break;
+#endif
+    default:
+        rt_set_errno(EINVAL);
+        ret = -1;
+    }
+
+    return ret;
+}
+RTM_EXPORT(clock_gettime);
+
+int clock_settime(clockid_t clockid, const struct timespec *tp)
+{
+    int second;
+    rt_tick_t tick;
+    rt_device_t device;
+
+    if ((clockid != CLOCK_REALTIME) || (tp == RT_NULL))
+    {
+        rt_set_errno(EINVAL);
+
+        return -1;
+    }
+
+    /* get second */
+    second = tp->tv_sec;
+    /* get tick */
+    tick = rt_tick_get();
+
+    /* update timevalue */
+    _timevalue.tv_usec = MICROSECOND_PER_SECOND - (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
+    _timevalue.tv_sec = second - tick/RT_TICK_PER_SECOND - 1;
+
+    /* update for RTC device */
+    device = rt_device_find("rtc");
+    if (device != RT_NULL)
+    {
+        /* set realtime seconds */
+        rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &second);
+    }
+    else
+        return -1;
+
+    return 0;
+}
+RTM_EXPORT(clock_settime);
+
+int clock_time_to_tick(const struct timespec *time)
+{
+    int tick;
+    int nsecond, second;
+    struct timespec tp;
+
+    RT_ASSERT(time != RT_NULL);
+
+    tick = RT_WAITING_FOREVER;
+    if (time != NULL)
+    {
+        /* get current tp */
+        clock_gettime(CLOCK_REALTIME, &tp);
+
+        if ((time->tv_nsec - tp.tv_nsec) < 0)
+        {
+            nsecond = NANOSECOND_PER_SECOND - (tp.tv_nsec - time->tv_nsec);
+            second  = time->tv_sec - tp.tv_sec - 1;
+        }
+        else
+        {
+            nsecond = time->tv_nsec - tp.tv_nsec;
+            second  = time->tv_sec - tp.tv_sec;
+        }
+
+        tick = second * RT_TICK_PER_SECOND + nsecond * RT_TICK_PER_SECOND / NANOSECOND_PER_SECOND;
+        if (tick < 0) tick = 0;
+    }
+
+    return tick;
+}
+RTM_EXPORT(clock_time_to_tick);
+
+#endif /* RT_USING_POSIX */
diff --git a/components/libc/compilers/common/all/unistd.c b/components/libc/compilers/common/all/unistd.c
new file mode 100644
index 0000000000..20130cbb8a
--- /dev/null
+++ b/components/libc/compilers/common/all/unistd.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-01     Meco Man     first Version
+ * 2021-02-12     Meco Man     move all functions located in <pthread_sleep.c> to this file
+ */
+
+#include <unistd.h>
+#include <rtthread.h>
+#include <rthw.h>
+
+#ifdef RT_USING_POSIX_TERMIOS
+#include "termios.h"
+
+int isatty(int fd)
+{
+    struct termios ts;
+    return(tcgetattr(fd,&ts) != -1);/*true if no error (is a tty)*/
+}
+RTM_EXPORT(isatty);
+#endif
+
+char *ttyname(int fd)
+{
+    return "/dev/tty0"; /*TODO: need to add more specific*/
+}
+RTM_EXPORT(ttyname);
+
+unsigned int sleep(unsigned int seconds)
+{
+    rt_tick_t delta_tick;
+
+    delta_tick = rt_tick_get();
+    rt_thread_delay(seconds * RT_TICK_PER_SECOND);
+    delta_tick = rt_tick_get() - delta_tick;
+
+    return seconds - delta_tick/RT_TICK_PER_SECOND;
+}
+RTM_EXPORT(sleep);
+
+int usleep(useconds_t usec)
+{
+    rt_thread_mdelay(usec / 1000u);
+    rt_hw_us_delay(usec % 1000u);
+    return 0;
+}
+RTM_EXPORT(usleep);
+
+pid_t getpid(void)
+{
+    /*TODO*/
+    return 0;
+}
+RTM_EXPORT(getpid);
+
+pid_t getppid(void)
+{
+    return 0;
+}
+RTM_EXPORT(getppid);
+
+uid_t getuid(void)
+{
+    return 0; /*ROOT*/
+}
+RTM_EXPORT(getuid);
+
+uid_t geteuid(void)
+{
+    return 0; /*ROOT*/
+}
+RTM_EXPORT(geteuid);
+
+gid_t getgid(void)
+{
+    return 0; /*ROOT*/
+}
+RTM_EXPORT(getgid);
+
+gid_t getegid(void)
+{
+    return 0; /*ROOT*/
+}
+RTM_EXPORT(getegid);
diff --git a/components/libc/compilers/common/excgcc/SConscript b/components/libc/compilers/common/excgcc/SConscript
new file mode 100644
index 0000000000..346e69b478
--- /dev/null
+++ b/components/libc/compilers/common/excgcc/SConscript
@@ -0,0 +1,13 @@
+from building import *
+
+Import('rtconfig')
+
+src   = []
+cwd   = GetCurrentDir()
+CPPPATH = [cwd]
+group = []
+src += Glob('*.c')
+
+if rtconfig.PLATFORM != 'gcc':
+    group = DefineGroup('libc', src, depend = ['RT_USING_LIBC'], CPPPATH = CPPPATH)
+Return('group')
diff --git a/components/libc/compilers/common/excgcc/fcntl.h b/components/libc/compilers/common/excgcc/fcntl.h
new file mode 100644
index 0000000000..f247b926e9
--- /dev/null
+++ b/components/libc/compilers/common/excgcc/fcntl.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef FCNTL_H__
+#define FCNTL_H__
+
+#include <rtconfig.h>
+
+#ifdef RT_USING_DFS
+#include <dfs_posix.h>
+#endif
+
+#endif
diff --git a/components/libc/compilers/common/excgcc/readme.md b/components/libc/compilers/common/excgcc/readme.md
new file mode 100644
index 0000000000..15f8e60d59
--- /dev/null
+++ b/components/libc/compilers/common/excgcc/readme.md
@@ -0,0 +1,3 @@
+## Attentions
+
+This folder is "common" for armlibc and dlib.
\ No newline at end of file
diff --git a/components/libc/compilers/common/excgcc/sys/stat.h b/components/libc/compilers/common/excgcc/sys/stat.h
new file mode 100644
index 0000000000..c4b42083c4
--- /dev/null
+++ b/components/libc/compilers/common/excgcc/sys/stat.h
@@ -0,0 +1,8 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
diff --git a/components/libc/compilers/common/excgcc/sys/types.h b/components/libc/compilers/common/excgcc/sys/types.h
new file mode 100644
index 0000000000..7222326a2a
--- /dev/null
+++ b/components/libc/compilers/common/excgcc/sys/types.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-05     Meco Man     fix bugs
+ * 2020-12-16     Meco Man     add useconds_t
+ */
+#ifndef __TYPES_H__
+#define __TYPES_H__
+
+#include <stdint.h>
+
+typedef int32_t          clockid_t;
+typedef int32_t          key_t;         /* Used for interprocess communication. */
+typedef int              pid_t;         /* Used for process IDs and process group IDs. */
+typedef unsigned short   uid_t;
+typedef unsigned short   gid_t;
+typedef signed long      off_t;
+typedef int              mode_t;
+#ifndef ARCH_CPU_64BIT
+typedef signed int       ssize_t;       /* Used for a count of bytes or an error indication. */
+#else
+typedef long signed int  ssize_t;       /* Used for a count of bytes or an error indication. */
+#endif
+typedef unsigned long    useconds_t;    /* microseconds (unsigned) */
+
+typedef unsigned long    dev_t;
+
+typedef unsigned int     u_int;
+typedef unsigned char    u_char;
+typedef unsigned long    u_long;
+
+#endif
diff --git a/components/libc/compilers/common/excgcc/sys/unistd.h b/components/libc/compilers/common/excgcc/sys/unistd.h
new file mode 100644
index 0000000000..7752a1caf7
--- /dev/null
+++ b/components/libc/compilers/common/excgcc/sys/unistd.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-12-16     Meco Man     add usleep
+ */
+#ifndef _SYS_UNISTD_H
+#define _SYS_UNISTD_H
+
+#include <rtconfig.h>
+#include "types.h"
+
+#ifdef RT_USING_DFS
+
+#define STDIN_FILENO    0       /* standard input file descriptor */
+#define STDOUT_FILENO   1       /* standard output file descriptor */
+#define STDERR_FILENO   2       /* standard error file descriptor */
+
+#include <dfs_posix.h>
+#else
+#define _FREAD      0x0001  /* read enabled */
+#define _FWRITE     0x0002  /* write enabled */
+#define _FAPPEND    0x0008  /* append (writes guaranteed at the end) */
+#define _FMARK      0x0010  /* internal; mark during gc() */
+#define _FDEFER     0x0020  /* internal; defer for next gc pass */
+#define _FASYNC     0x0040  /* signal pgrp when data ready */
+#define _FSHLOCK    0x0080  /* BSD flock() shared lock present */
+#define _FEXLOCK    0x0100  /* BSD flock() exclusive lock present */
+#define _FCREAT     0x0200  /* open with file create */
+#define _FTRUNC     0x0400  /* open with truncation */
+#define _FEXCL      0x0800  /* error on open if file exists */
+#define _FNBIO      0x1000  /* non blocking I/O (sys5 style) */
+#define _FSYNC      0x2000  /* do all writes synchronously */
+#define _FNONBLOCK  0x4000  /* non blocking I/O (POSIX style) */
+#define _FNDELAY    _FNONBLOCK  /* non blocking I/O (4.2 style) */
+#define _FNOCTTY    0x8000  /* don't assign a ctty on this open */
+
+
+#ifndef O_RDONLY
+#define O_RDONLY    0       /* +1 == FREAD */
+#endif
+#ifndef O_WRONLY
+#define O_WRONLY    1       /* +1 == FWRITE */
+#endif
+#ifndef O_RDWR
+#define O_RDWR      2       /* +1 == FREAD|FWRITE */
+#endif
+#ifndef O_APPEND
+#define O_APPEND    _FAPPEND
+#endif
+#ifndef O_CREAT
+#define O_CREAT     _FCREAT
+#endif
+#ifndef O_TRUNC
+#define O_TRUNC     _FTRUNC
+#endif
+#ifndef O_EXCL
+#define O_EXCL      _FEXCL
+#endif
+#ifndef O_SYNC
+#define O_SYNC      _FSYNC
+#endif
+
+#endif
+
+
+int     isatty      (int fd);
+char *  ttyname     (int desc);
+
+unsigned int sleep(unsigned int seconds);
+int usleep(useconds_t usec);
+
+pid_t getpid(void);
+pid_t getppid(void);
+uid_t getuid(void);
+uid_t geteuid(void);
+gid_t getgid(void);
+gid_t getegid(void);
+
+#endif /* _SYS_UNISTD_H */
diff --git a/components/libc/compilers/common/excgcc/unistd.h b/components/libc/compilers/common/excgcc/unistd.h
new file mode 100644
index 0000000000..cd77a12e3b
--- /dev/null
+++ b/components/libc/compilers/common/excgcc/unistd.h
@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#include "sys/unistd.h"
+
diff --git a/components/libc/compilers/common_all/SConscript b/components/libc/compilers/common_all/SConscript
deleted file mode 100644
index 319e1a3555..0000000000
--- a/components/libc/compilers/common_all/SConscript
+++ /dev/null
@@ -1,27 +0,0 @@
-from building import *
-
-Import('rtconfig')
-
-src   = []
-cwd   = GetCurrentDir()
-group = []
-CPPPATH = [cwd]
-
-if GetDepend('RT_USING_LIBC'):
-    src += Glob('*.c')
-else:
-    if GetDepend('RT_LIBC_USING_TIME'):
-        src += ['time.c']
-
-if GetDepend('RT_USING_POSIX') == False:
-    SrcRemove(src, ['unistd.c'])
-
-if rtconfig.CROSS_TOOL == 'keil':
-    CPPDEFINES = ['__CLK_TCK=RT_TICK_PER_SECOND']
-else:
-    CPPDEFINES = []
-
-if GetDepend('RT_USING_LIBC') or GetDepend('RT_LIBC_USING_TIME'):
-    group = DefineGroup('libc', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
-
-Return('group')
diff --git a/components/libc/compilers/common_all/dirent.h b/components/libc/compilers/common_all/dirent.h
deleted file mode 100644
index bfba586093..0000000000
--- a/components/libc/compilers/common_all/dirent.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef __RTT_DIRENT_H__
-#define __RTT_DIRENT_H__
-
-#include <rtthread.h>
-
-/*
-* dirent.h - format of directory entries
- * Ref: http://www.opengroup.org/onlinepubs/009695399/basedefs/dirent.h.html
- */
-
-/* File types */
-#define FT_REGULAR      0   /* regular file */
-#define FT_SOCKET       1   /* socket file  */
-#define FT_DIRECTORY    2   /* directory    */
-#define FT_USER         3   /* user defined */
-
-#define DT_UNKNOWN      0x00
-#define DT_REG          0x01
-#define DT_DIR          0x02
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef HAVE_DIR_STRUCTURE
-typedef struct
-{
-    int fd;                         /* directory file */
-    char buf[512];
-    int num;
-    int cur;
-} DIR;
-#endif
-
-#ifndef HAVE_DIRENT_STRUCTURE
-struct dirent
-{
-    rt_uint8_t  d_type;             /* The type of the file */
-    rt_uint8_t  d_namlen;           /* The length of the not including the terminating null file name */
-    rt_uint16_t d_reclen;           /* length of this record */
-    char d_name[256];               /* The null-terminated file name */
-};
-#endif
-
-int            closedir(DIR *);
-DIR           *opendir(const char *);
-struct dirent *readdir(DIR *);
-int            readdir_r(DIR *, struct dirent *, struct dirent **);
-void           rewinddir(DIR *);
-void           seekdir(DIR *, long int);
-long           telldir(DIR *);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/components/libc/compilers/common_all/readme.md b/components/libc/compilers/common_all/readme.md
deleted file mode 100644
index 81bb005d0a..0000000000
--- a/components/libc/compilers/common_all/readme.md
+++ /dev/null
@@ -1,10 +0,0 @@
-## Attentions
-
-1. This folder is "common" for armlibc newlibc and dlib.
-
-2. If you want to add new `.c` files, please do not forget to fix SConscript file too. eg:
-
-```python
-if GetDepend('RT_USING_POSIX') == False:
-        SrcRemove(src, ['unistd.c'])
-```
\ No newline at end of file
diff --git a/components/libc/compilers/common_all/stdlib.c b/components/libc/compilers/common_all/stdlib.c
deleted file mode 100644
index 9d8952e99e..0000000000
--- a/components/libc/compilers/common_all/stdlib.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2021-02-15     Meco Man     first version
- */
-
-#include <rtthread.h>
-
-void __rt_libc_exit(int status)
-{
-    rt_thread_t self = rt_thread_self();
-
-    if (self != RT_NULL)
-    {
-        rt_kprintf("thread:%s exit:%d!\n", self->name, status);
-        rt_thread_control(self, RT_THREAD_CTRL_CLOSE, RT_NULL);
-    }
-}
-
-int __rt_libc_system(const char *string)
-{
-    /* TODO */
-    return 0;
-}
diff --git a/components/libc/compilers/common_all/sys/ioctl.h b/components/libc/compilers/common_all/sys/ioctl.h
deleted file mode 100644
index 648d90230d..0000000000
--- a/components/libc/compilers/common_all/sys/ioctl.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-01     Meco Man     First Version
- */
-#ifndef _SYS_IOCTL_H
-#define _SYS_IOCTL_H
-
-#include <rtconfig.h>
-#ifdef RT_USING_POSIX
-#include <dfs_posix.h>
-#endif
-
-#endif
diff --git a/components/libc/compilers/common_all/sys/mman.h b/components/libc/compilers/common_all/sys/mman.h
deleted file mode 100644
index a9235d61f0..0000000000
--- a/components/libc/compilers/common_all/sys/mman.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017/11/30     Bernard      The first version.
- */
-
-#ifndef _SYS_MMAN_H
-#define _SYS_MMAN_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <sys/types.h>
-    
-#define MAP_FAILED     ((void *) -1)
-
-#define MAP_SHARED     0x01
-#define MAP_PRIVATE    0x02
-#define MAP_TYPE       0x0f
-#define MAP_FIXED      0x10
-#define MAP_ANON       0x20
-#define MAP_ANONYMOUS  MAP_ANON
-#define MAP_NORESERVE  0x4000
-#define MAP_GROWSDOWN  0x0100
-#define MAP_DENYWRITE  0x0800
-#define MAP_EXECUTABLE 0x1000
-#define MAP_LOCKED     0x2000
-#define MAP_POPULATE   0x8000
-#define MAP_NONBLOCK   0x10000
-#define MAP_STACK      0x20000
-#define MAP_HUGETLB    0x40000
-#define MAP_FILE       0
-
-#define PROT_NONE      0
-#define PROT_READ      1
-#define PROT_WRITE     2
-#define PROT_EXEC      4
-#define PROT_GROWSDOWN 0x01000000
-#define PROT_GROWSUP   0x02000000
-
-#define MS_ASYNC       1
-#define MS_INVALIDATE  2
-#define MS_SYNC        4
-
-#define MCL_CURRENT    1
-#define MCL_FUTURE     2
-#define MCL_ONFAULT    4
-
-void *mmap (void *start, size_t len, int prot, int flags, int fd, off_t off);
-int munmap (void *start, size_t len);
-
-#ifdef __cplusplus
-}
-#endif
-#endif
diff --git a/components/libc/compilers/common_all/sys/statfs.h b/components/libc/compilers/common_all/sys/statfs.h
deleted file mode 100644
index 0996af9a18..0000000000
--- a/components/libc/compilers/common_all/sys/statfs.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef __RTT_STATFS_H__
-#define __RTT_STATFS_H__
-
-#include <rtthread.h>
-
-struct statfs
-{
-    rt_size_t f_bsize;   /* block size */
-    rt_size_t f_blocks;  /* total data blocks in file system */
-    rt_size_t f_bfree;   /* free blocks in file system */
-};
-
-#endif
diff --git a/components/libc/compilers/common_all/sys/termios.h b/components/libc/compilers/common_all/sys/termios.h
deleted file mode 100644
index c4b42083c4..0000000000
--- a/components/libc/compilers/common_all/sys/termios.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
diff --git a/components/libc/compilers/common_all/sys/time.h b/components/libc/compilers/common_all/sys/time.h
deleted file mode 100644
index ef1c810608..0000000000
--- a/components/libc/compilers/common_all/sys/time.h
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-07     Meco Man     combine gcc armcc iccarm
- * 2021-02-12     Meco Man     move all definitions located in <clock_time.h> to this file
- */
-#ifndef _SYS_TIME_H_
-#define _SYS_TIME_H_
-
-#include <rtconfig.h>
-#include <time.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Skip define timespec for IAR version over 8.10.1 where __VER__ is 8010001.
- */
-#if defined ( __ICCARM__ ) && (__VER__ >= 8010001)
-#define _TIMESPEC_DEFINED
-#endif
-
-
-#ifndef _TIMEVAL_DEFINED
-#define _TIMEVAL_DEFINED
-/*
- * Structure returned by gettimeofday(2) system call,
- * and used in other calls.
- */
-#if !(defined(_WIN32))
-struct timeval {
-    long    tv_sec;     /* seconds */
-    long    tv_usec;    /* and microseconds */
-};
-#endif
-#endif /* _TIMEVAL_DEFINED */
-
-#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && !defined (__ICCARM__) && !defined (_WIN32)
-struct timespec {
-    time_t  tv_sec;     /* seconds */
-    long    tv_nsec;    /* and nanoseconds */
-};
-#endif
-
-struct timezone {
-  int tz_minuteswest;   /* minutes west of Greenwich */
-  int tz_dsttime;       /* type of dst correction */
-};
-
-int stime(const time_t *t);
-time_t timegm(struct tm * const t);
-int gettimeofday(struct timeval *tv, struct timezone *tz);
-int settimeofday(const struct timeval *tv, const struct timezone *tz);
-#if defined(__ARMCC_VERSION) || defined (__ICCARM__)
-struct tm *gmtime_r(const time_t *timep, struct tm *r);
-#endif
-
-#ifdef RT_USING_POSIX
-#include <sys/types.h>
-/* posix clock and timer */
-#define MILLISECOND_PER_SECOND  1000UL
-#define MICROSECOND_PER_SECOND  1000000UL
-#define NANOSECOND_PER_SECOND   1000000000UL
-
-#define MILLISECOND_PER_TICK    (MILLISECOND_PER_SECOND / RT_TICK_PER_SECOND)
-#define MICROSECOND_PER_TICK    (MICROSECOND_PER_SECOND / RT_TICK_PER_SECOND)
-#define NANOSECOND_PER_TICK     (NANOSECOND_PER_SECOND  / RT_TICK_PER_SECOND)
-
-#ifndef CLOCK_REALTIME
-#define CLOCK_REALTIME      1
-#endif
-
-#define CLOCK_CPUTIME_ID    2
-
-#ifndef CLOCK_PROCESS_CPUTIME_ID
-#define CLOCK_PROCESS_CPUTIME_ID CLOCK_CPUTIME_ID
-#endif
-#ifndef CLOCK_THREAD_CPUTIME_ID
-#define CLOCK_THREAD_CPUTIME_ID  CLOCK_CPUTIME_ID
-#endif
-
-#ifndef CLOCK_MONOTONIC
-#define CLOCK_MONOTONIC     4
-#endif
-
-int clock_getres  (clockid_t clockid, struct timespec *res);
-int clock_gettime (clockid_t clockid, struct timespec *tp);
-int clock_settime (clockid_t clockid, const struct timespec *tp);
-int clock_time_to_tick(const struct timespec *time);
-#endif /* RT_USING_POSIX */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _SYS_TIME_H_ */
diff --git a/components/libc/compilers/common_all/termios.h b/components/libc/compilers/common_all/termios.h
deleted file mode 100644
index 2960d52c58..0000000000
--- a/components/libc/compilers/common_all/termios.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef _TERMIOS_H__
-#define _TERMIOS_H__
-
-#include <rtconfig.h>
-
-#ifdef RT_USING_POSIX_TERMIOS
-#include <sys/types.h>
-#include <posix_termios.h>
-#endif
-
-#endif
diff --git a/components/libc/compilers/common_all/time.c b/components/libc/compilers/common_all/time.c
deleted file mode 100644
index 33d8907165..0000000000
--- a/components/libc/compilers/common_all/time.c
+++ /dev/null
@@ -1,643 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2019-08-21     zhangjun     copy from minilibc
- * 2020-09-07     Meco Man     combine gcc armcc iccarm
- * 2021-02-05     Meco Man     add timegm()
- * 2021-02-07     Meco Man     fixed gettimeofday()
- * 2021-02-08     Meco Man     add settimeofday() stime()
- * 2021-02-10     Meco Man     add ctime_r() and re-implement ctime()
- * 2021-02-11     Meco Man     fix bug #3183 - align days[] and months[] to 4 bytes
- * 2021-02-12     Meco Man     add errno
- * 2012-12-08     Bernard      <clock_time.c> fix the issue of _timevalue.tv_usec initialization,
- *                             which found by Rob <rdent@iinet.net.au>
- * 2021-02-12     Meco Man     move all of the functions located in <clock_time.c> to this file
- * 2021-03-15     Meco Man     fixed bug: https://club.rt-thread.org/ask/question/423650.html
- */
-
-#include <sys/time.h>
-#include <rtthread.h>
-
-#ifdef RT_USING_DEVICE
-#include <rtdevice.h>
-#endif
-
-#define DBG_TAG    "TIME"
-#define DBG_LVL    DBG_INFO
-#include <rtdbg.h>
-
-/* seconds per day */
-#define SPD 24*60*60
-
-/* days per month -- nonleap! */
-static const short __spm[13] =
-{
-    0,
-    (31),
-    (31 + 28),
-    (31 + 28 + 31),
-    (31 + 28 + 31 + 30),
-    (31 + 28 + 31 + 30 + 31),
-    (31 + 28 + 31 + 30 + 31 + 30),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31),
-};
-
-ALIGN(4) static const char days[] = "Sun Mon Tue Wed Thu Fri Sat ";
-ALIGN(4) static const char months[] = "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ";
-
-static int __isleap(int year)
-{
-    /* every fourth year is a leap year except for century years that are
-     * not divisible by 400. */
-    /*  return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); */
-    return (!(year % 4) && ((year % 100) || !(year % 400)));
-}
-
-static void num2str(char *c, int i)
-{
-    c[0] = i / 10 + '0';
-    c[1] = i % 10 + '0';
-}
-
-/**
- * Get time from RTC device (without timezone)
- * @param tv: struct timeval
- * @return -1 failure; 1 success
- */
-static int get_timeval(struct timeval *tv)
-{
-#ifdef RT_USING_RTC
-    static rt_device_t device = RT_NULL;
-    rt_err_t rst = -RT_ERROR;
-
-    if (tv == RT_NULL)
-        return -1;
-
-    /* default is 0 */
-    tv->tv_sec = 0;
-    tv->tv_usec = 0;
-
-    /* optimization: find rtc device only first */
-    if (device == RT_NULL)
-    {
-        device = rt_device_find("rtc");
-    }
-
-    /* read timestamp from RTC device */
-    if (device != RT_NULL)
-    {
-        if (rt_device_open(device, 0) == RT_EOK)
-        {
-            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &tv->tv_sec);
-            rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME_US, &tv->tv_usec);
-            rt_device_close(device);
-        }
-    }
-    else
-    {
-        /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
-        rt_kprintf("Cannot find a RTC device to provide time!\r\n");
-        return -1;
-    }
-
-    return (rst < 0) ? -1 : 1;
-
-#else
-    /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
-    rt_kprintf("Cannot find a RTC device to provide time!\r\n");
-    return -1;
-#endif /* RT_USING_RTC */
-}
-
-/**
- * Set time to RTC device (without timezone)
- * @param tv: struct timeval
- * @return -1 failure; 1 success
- */
-static int set_timeval(struct timeval *tv)
-{
-#ifdef RT_USING_RTC
-    static rt_device_t device = RT_NULL;
-    rt_err_t rst = -RT_ERROR;
-
-    if (tv == RT_NULL)
-        return -1;
-
-    /* optimization: find rtc device only first */
-    if (device == RT_NULL)
-    {
-        device = rt_device_find("rtc");
-    }
-
-    /* read timestamp from RTC device */
-    if (device != RT_NULL)
-    {
-        if (rt_device_open(device, 0) == RT_EOK)
-        {
-            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &tv->tv_sec);
-            rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME_US, &tv->tv_usec);
-            rt_device_close(device);
-        }
-    }
-    else
-    {
-        LOG_W("Cannot find a RTC device to provide time!");
-        return -1;
-    }
-
-    return (rst < 0) ? -1 : 1;
-
-#else
-    LOG_W("Cannot find a RTC device to provide time!");
-    return -1;
-#endif /* RT_USING_RTC */
-}
-
-struct tm *gmtime_r(const time_t *timep, struct tm *r)
-{
-    time_t i;
-    register time_t work = *timep % (SPD);
-    r->tm_sec = work % 60;
-    work /= 60;
-    r->tm_min = work % 60;
-    r->tm_hour = work / 60;
-    work = *timep / (SPD);
-    r->tm_wday = (4 + work) % 7;
-    for (i = 1970;; ++i)
-    {
-        register time_t k = __isleap(i) ? 366 : 365;
-        if (work >= k)
-            work -= k;
-        else
-            break;
-    }
-    r->tm_year = i - 1900;
-    r->tm_yday = work;
-
-    r->tm_mday = 1;
-    if (__isleap(i) && (work > 58))
-    {
-        if (work == 59)
-            r->tm_mday = 2; /* 29.2. */
-        work -= 1;
-    }
-
-    for (i = 11; i && (__spm[i] > work); --i)
-        ;
-    r->tm_mon = i;
-    r->tm_mday += work - __spm[i];
-
-    r->tm_isdst = 0;
-    return r;
-}
-RTM_EXPORT(gmtime_r);
-
-struct tm* gmtime(const time_t* t)
-{
-    static struct tm tmp;
-    return gmtime_r(t, &tmp);
-}
-RTM_EXPORT(gmtime);
-
-/*TODO: timezone */
-struct tm* localtime_r(const time_t* t, struct tm* r)
-{
-    time_t local_tz;
-    int utc_plus;
-
-    utc_plus = 8; /* GMT: UTC+8 */
-    local_tz = *t + utc_plus * 3600;
-    return gmtime_r(&local_tz, r);
-}
-RTM_EXPORT(localtime_r);
-
-struct tm* localtime(const time_t* t)
-{
-    static struct tm tmp;
-    return localtime_r(t, &tmp);
-}
-RTM_EXPORT(localtime);
-
-/* TODO: timezone */
-time_t mktime(struct tm * const t)
-{
-    time_t timestamp;
-    int utc_plus;
-
-    utc_plus = 8; /* GMT: UTC+8 */
-    timestamp = timegm(t);
-    timestamp = timestamp - 3600 * utc_plus;
-    return timestamp;
-}
-RTM_EXPORT(mktime);
-
-char* asctime_r(const struct tm *t, char *buf)
-{
-    /* "Wed Jun 30 21:49:08 1993\n" */
-    *(int*) buf = *(int*) (days + (t->tm_wday << 2));
-    *(int*) (buf + 4) = *(int*) (months + (t->tm_mon << 2));
-    num2str(buf + 8, t->tm_mday);
-    if (buf[8] == '0')
-        buf[8] = ' ';
-    buf[10] = ' ';
-    num2str(buf + 11, t->tm_hour);
-    buf[13] = ':';
-    num2str(buf + 14, t->tm_min);
-    buf[16] = ':';
-    num2str(buf + 17, t->tm_sec);
-    buf[19] = ' ';
-    num2str(buf + 20, (t->tm_year + 1900) / 100);
-    num2str(buf + 22, (t->tm_year + 1900) % 100);
-    buf[24] = '\n';
-    buf[25] = '\0';
-    return buf;
-}
-RTM_EXPORT(asctime_r);
-
-char* asctime(const struct tm *timeptr)
-{
-    static char buf[26];
-    return asctime_r(timeptr, buf);
-}
-RTM_EXPORT(asctime);
-
-char *ctime_r (const time_t * tim_p, char * result)
-{
-    struct tm tm;
-    return asctime_r (localtime_r (tim_p, &tm), result);
-}
-RTM_EXPORT(ctime_r);
-
-char* ctime(const time_t *tim_p)
-{
-    return asctime (localtime (tim_p));
-}
-RTM_EXPORT(ctime);
-
-/**
- * Returns the current time.
- *
- * @param time_t * t the timestamp pointer, if not used, keep NULL.
- *
- * @return The value ((time_t)-1) is returned if the calendar time is not available.
- *         If timer is not a NULL pointer, the return value is also stored in timer.
- *
- */
-RT_WEAK time_t time(time_t *t)
-{
-    struct timeval now;
-
-    if(get_timeval(&now) > 0)
-    {
-        if (t)
-        {
-            *t = now.tv_sec;
-        }
-        return now.tv_sec;
-    }
-    else
-    {
-        errno = EFAULT;
-        return ((time_t)-1);
-    }
-}
-RTM_EXPORT(time);
-
-RT_WEAK clock_t clock(void)
-{
-    return rt_tick_get();
-}
-RTM_EXPORT(clock);
-
-int stime(const time_t *t)
-{
-    struct timeval tv;
-
-    if (!t)
-    {
-        errno = EFAULT;
-        return -1;
-    }
-
-    tv.tv_sec = *t;
-    if (set_timeval(&tv) > 0)
-    {
-        return 0;
-    }
-    else
-    {
-        errno = EFAULT;
-        return -1;
-    }
-}
-RTM_EXPORT(stime);
-
-time_t timegm(struct tm * const t)
-{
-    register time_t day;
-    register time_t i;
-    register time_t years = t->tm_year - 70;
-
-    if (t->tm_sec > 60)
-    {
-        t->tm_min += t->tm_sec / 60;
-        t->tm_sec %= 60;
-    }
-    if (t->tm_min > 60)
-    {
-        t->tm_hour += t->tm_min / 60;
-        t->tm_min %= 60;
-    }
-    if (t->tm_hour > 24)
-    {
-        t->tm_mday += t->tm_hour / 24;
-        t->tm_hour %= 24;
-    }
-    if (t->tm_mon > 12)
-    {
-        t->tm_year += t->tm_mon / 12;
-        t->tm_mon %= 12;
-    }
-    while (t->tm_mday > __spm[1 + t->tm_mon])
-    {
-        if (t->tm_mon == 1 && __isleap(t->tm_year + 1900))
-        {
-            --t->tm_mday;
-        }
-        t->tm_mday -= __spm[t->tm_mon];
-        ++t->tm_mon;
-        if (t->tm_mon > 11)
-        {
-            t->tm_mon = 0;
-            ++t->tm_year;
-        }
-    }
-
-    if (t->tm_year < 70)
-        return (time_t) - 1;
-
-    /* Days since 1970 is 365 * number of years + number of leap years since 1970 */
-    day = years * 365 + (years + 1) / 4;
-
-    /* After 2100 we have to substract 3 leap years for every 400 years
-     This is not intuitive. Most mktime implementations do not support
-     dates after 2059, anyway, so we might leave this out for it's
-     bloat. */
-    if (years >= 131)
-    {
-        years -= 131;
-        years /= 100;
-        day -= (years >> 2) * 3 + 1;
-        if ((years &= 3) == 3)
-            years--;
-        day -= years;
-    }
-
-    day += t->tm_yday = __spm[t->tm_mon] + t->tm_mday - 1 +
-                        (__isleap(t->tm_year + 1900) & (t->tm_mon > 1));
-
-    /* day is now the number of days since 'Jan 1 1970' */
-    i = 7;
-    t->tm_wday = (day + 4) % i; /* Sunday=0, Monday=1, ..., Saturday=6 */
-
-    i = 24;
-    day *= i;
-    i = 60;
-    return ((day + t->tm_hour) * i + t->tm_min) * i + t->tm_sec;
-}
-RTM_EXPORT(timegm);
-
-/* TODO: timezone */
-int gettimeofday(struct timeval *tv, struct timezone *tz)
-{
-    if (tv != RT_NULL && get_timeval(tv) > 0)
-    {
-        return 0;
-    }
-    else
-    {
-        errno = EFAULT;
-        return -1;
-    }
-}
-RTM_EXPORT(gettimeofday);
-
-/* TODO: timezone */
-int settimeofday(const struct timeval *tv, const struct timezone *tz)
-{
-    if (tv != RT_NULL)
-    {
-        if(tv->tv_sec >= 0 && tv->tv_usec >= 0)
-        {
-            if(set_timeval((struct timeval *)tv) > 0)
-            {
-                return 0;
-            }
-            else
-            {
-                errno = EFAULT;
-                return -1;
-            }
-        }
-        else
-        {
-            errno = EINVAL;
-            return -1;
-        }
-    }
-    else
-    {
-        errno = EFAULT;
-        return -1;
-    }
-}
-RTM_EXPORT(settimeofday);
-
-/* inherent in the toolchain */
-RTM_EXPORT(difftime);
-RTM_EXPORT(strftime);
-
-#ifdef RT_USING_POSIX
-static struct timeval _timevalue;
-static int clock_time_system_init()
-{
-    time_t time;
-    rt_tick_t tick;
-    rt_device_t device;
-
-    time = 0;
-    device = rt_device_find("rtc");
-    if (device != RT_NULL)
-    {
-        /* get realtime seconds */
-        rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time);
-    }
-
-    /* get tick */
-    tick = rt_tick_get();
-
-    _timevalue.tv_usec = (tick%RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
-    _timevalue.tv_sec = time - tick/RT_TICK_PER_SECOND - 1;
-
-    return 0;
-}
-INIT_COMPONENT_EXPORT(clock_time_system_init);
-
-int clock_getres(clockid_t clockid, struct timespec *res)
-{
-    int ret = 0;
-
-    if (res == RT_NULL)
-    {
-        rt_set_errno(EINVAL);
-        return -1;
-    }
-
-    switch (clockid)
-    {
-    case CLOCK_REALTIME:
-        res->tv_sec = 0;
-        res->tv_nsec = NANOSECOND_PER_SECOND/RT_TICK_PER_SECOND;
-        break;
-
-#ifdef RT_USING_CPUTIME
-    case CLOCK_CPUTIME_ID:
-        res->tv_sec  = 0;
-        res->tv_nsec = clock_cpu_getres();
-        break;
-#endif
-
-    default:
-        ret = -1;
-        rt_set_errno(EINVAL);
-        break;
-    }
-
-    return ret;
-}
-RTM_EXPORT(clock_getres);
-
-int clock_gettime(clockid_t clockid, struct timespec *tp)
-{
-    int ret = 0;
-
-    if (tp == RT_NULL)
-    {
-        rt_set_errno(EINVAL);
-        return -1;
-    }
-
-    switch (clockid)
-    {
-    case CLOCK_REALTIME:
-        {
-            /* get tick */
-            int tick = rt_tick_get();
-
-            tp->tv_sec  = _timevalue.tv_sec + tick / RT_TICK_PER_SECOND;
-            tp->tv_nsec = (_timevalue.tv_usec + (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK) * 1000;
-        }
-        break;
-
-#ifdef RT_USING_CPUTIME
-    case CLOCK_CPUTIME_ID:
-        {
-            float unit = 0;
-            long long cpu_tick;
-
-            unit = clock_cpu_getres();
-            cpu_tick = clock_cpu_gettime();
-
-            tp->tv_sec  = ((int)(cpu_tick * unit)) / NANOSECOND_PER_SECOND;
-            tp->tv_nsec = ((int)(cpu_tick * unit)) % NANOSECOND_PER_SECOND;
-        }
-        break;
-#endif
-    default:
-        rt_set_errno(EINVAL);
-        ret = -1;
-    }
-
-    return ret;
-}
-RTM_EXPORT(clock_gettime);
-
-int clock_settime(clockid_t clockid, const struct timespec *tp)
-{
-    int second;
-    rt_tick_t tick;
-    rt_device_t device;
-
-    if ((clockid != CLOCK_REALTIME) || (tp == RT_NULL))
-    {
-        rt_set_errno(EINVAL);
-
-        return -1;
-    }
-
-    /* get second */
-    second = tp->tv_sec;
-    /* get tick */
-    tick = rt_tick_get();
-
-    /* update timevalue */
-    _timevalue.tv_usec = MICROSECOND_PER_SECOND - (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
-    _timevalue.tv_sec = second - tick/RT_TICK_PER_SECOND - 1;
-
-    /* update for RTC device */
-    device = rt_device_find("rtc");
-    if (device != RT_NULL)
-    {
-        /* set realtime seconds */
-        rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &second);
-    }
-    else
-        return -1;
-
-    return 0;
-}
-RTM_EXPORT(clock_settime);
-
-int clock_time_to_tick(const struct timespec *time)
-{
-    int tick;
-    int nsecond, second;
-    struct timespec tp;
-
-    RT_ASSERT(time != RT_NULL);
-
-    tick = RT_WAITING_FOREVER;
-    if (time != NULL)
-    {
-        /* get current tp */
-        clock_gettime(CLOCK_REALTIME, &tp);
-
-        if ((time->tv_nsec - tp.tv_nsec) < 0)
-        {
-            nsecond = NANOSECOND_PER_SECOND - (tp.tv_nsec - time->tv_nsec);
-            second  = time->tv_sec - tp.tv_sec - 1;
-        }
-        else
-        {
-            nsecond = time->tv_nsec - tp.tv_nsec;
-            second  = time->tv_sec - tp.tv_sec;
-        }
-
-        tick = second * RT_TICK_PER_SECOND + nsecond * RT_TICK_PER_SECOND / NANOSECOND_PER_SECOND;
-        if (tick < 0) tick = 0;
-    }
-
-    return tick;
-}
-RTM_EXPORT(clock_time_to_tick);
-
-#endif /* RT_USING_POSIX */
diff --git a/components/libc/compilers/common_all/unistd.c b/components/libc/compilers/common_all/unistd.c
deleted file mode 100644
index 20130cbb8a..0000000000
--- a/components/libc/compilers/common_all/unistd.c
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-01     Meco Man     first Version
- * 2021-02-12     Meco Man     move all functions located in <pthread_sleep.c> to this file
- */
-
-#include <unistd.h>
-#include <rtthread.h>
-#include <rthw.h>
-
-#ifdef RT_USING_POSIX_TERMIOS
-#include "termios.h"
-
-int isatty(int fd)
-{
-    struct termios ts;
-    return(tcgetattr(fd,&ts) != -1);/*true if no error (is a tty)*/
-}
-RTM_EXPORT(isatty);
-#endif
-
-char *ttyname(int fd)
-{
-    return "/dev/tty0"; /*TODO: need to add more specific*/
-}
-RTM_EXPORT(ttyname);
-
-unsigned int sleep(unsigned int seconds)
-{
-    rt_tick_t delta_tick;
-
-    delta_tick = rt_tick_get();
-    rt_thread_delay(seconds * RT_TICK_PER_SECOND);
-    delta_tick = rt_tick_get() - delta_tick;
-
-    return seconds - delta_tick/RT_TICK_PER_SECOND;
-}
-RTM_EXPORT(sleep);
-
-int usleep(useconds_t usec)
-{
-    rt_thread_mdelay(usec / 1000u);
-    rt_hw_us_delay(usec % 1000u);
-    return 0;
-}
-RTM_EXPORT(usleep);
-
-pid_t getpid(void)
-{
-    /*TODO*/
-    return 0;
-}
-RTM_EXPORT(getpid);
-
-pid_t getppid(void)
-{
-    return 0;
-}
-RTM_EXPORT(getppid);
-
-uid_t getuid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(getuid);
-
-uid_t geteuid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(geteuid);
-
-gid_t getgid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(getgid);
-
-gid_t getegid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(getegid);
diff --git a/components/libc/compilers/common_except_gcc/SConscript b/components/libc/compilers/common_except_gcc/SConscript
deleted file mode 100644
index 346e69b478..0000000000
--- a/components/libc/compilers/common_except_gcc/SConscript
+++ /dev/null
@@ -1,13 +0,0 @@
-from building import *
-
-Import('rtconfig')
-
-src   = []
-cwd   = GetCurrentDir()
-CPPPATH = [cwd]
-group = []
-src += Glob('*.c')
-
-if rtconfig.PLATFORM != 'gcc':
-    group = DefineGroup('libc', src, depend = ['RT_USING_LIBC'], CPPPATH = CPPPATH)
-Return('group')
diff --git a/components/libc/compilers/common_except_gcc/fcntl.h b/components/libc/compilers/common_except_gcc/fcntl.h
deleted file mode 100644
index f247b926e9..0000000000
--- a/components/libc/compilers/common_except_gcc/fcntl.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef FCNTL_H__
-#define FCNTL_H__
-
-#include <rtconfig.h>
-
-#ifdef RT_USING_DFS
-#include <dfs_posix.h>
-#endif
-
-#endif
diff --git a/components/libc/compilers/common_except_gcc/readme.md b/components/libc/compilers/common_except_gcc/readme.md
deleted file mode 100644
index 15f8e60d59..0000000000
--- a/components/libc/compilers/common_except_gcc/readme.md
+++ /dev/null
@@ -1,3 +0,0 @@
-## Attentions
-
-This folder is "common" for armlibc and dlib.
\ No newline at end of file
diff --git a/components/libc/compilers/common_except_gcc/sys/stat.h b/components/libc/compilers/common_except_gcc/sys/stat.h
deleted file mode 100644
index c4b42083c4..0000000000
--- a/components/libc/compilers/common_except_gcc/sys/stat.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
diff --git a/components/libc/compilers/common_except_gcc/sys/types.h b/components/libc/compilers/common_except_gcc/sys/types.h
deleted file mode 100644
index 7222326a2a..0000000000
--- a/components/libc/compilers/common_except_gcc/sys/types.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-05     Meco Man     fix bugs
- * 2020-12-16     Meco Man     add useconds_t
- */
-#ifndef __TYPES_H__
-#define __TYPES_H__
-
-#include <stdint.h>
-
-typedef int32_t          clockid_t;
-typedef int32_t          key_t;         /* Used for interprocess communication. */
-typedef int              pid_t;         /* Used for process IDs and process group IDs. */
-typedef unsigned short   uid_t;
-typedef unsigned short   gid_t;
-typedef signed long      off_t;
-typedef int              mode_t;
-#ifndef ARCH_CPU_64BIT
-typedef signed int       ssize_t;       /* Used for a count of bytes or an error indication. */
-#else
-typedef long signed int  ssize_t;       /* Used for a count of bytes or an error indication. */
-#endif
-typedef unsigned long    useconds_t;    /* microseconds (unsigned) */
-
-typedef unsigned long    dev_t;
-
-typedef unsigned int     u_int;
-typedef unsigned char    u_char;
-typedef unsigned long    u_long;
-
-#endif
diff --git a/components/libc/compilers/common_except_gcc/sys/unistd.h b/components/libc/compilers/common_except_gcc/sys/unistd.h
deleted file mode 100644
index 7752a1caf7..0000000000
--- a/components/libc/compilers/common_except_gcc/sys/unistd.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-12-16     Meco Man     add usleep
- */
-#ifndef _SYS_UNISTD_H
-#define _SYS_UNISTD_H
-
-#include <rtconfig.h>
-#include "types.h"
-
-#ifdef RT_USING_DFS
-
-#define STDIN_FILENO    0       /* standard input file descriptor */
-#define STDOUT_FILENO   1       /* standard output file descriptor */
-#define STDERR_FILENO   2       /* standard error file descriptor */
-
-#include <dfs_posix.h>
-#else
-#define _FREAD      0x0001  /* read enabled */
-#define _FWRITE     0x0002  /* write enabled */
-#define _FAPPEND    0x0008  /* append (writes guaranteed at the end) */
-#define _FMARK      0x0010  /* internal; mark during gc() */
-#define _FDEFER     0x0020  /* internal; defer for next gc pass */
-#define _FASYNC     0x0040  /* signal pgrp when data ready */
-#define _FSHLOCK    0x0080  /* BSD flock() shared lock present */
-#define _FEXLOCK    0x0100  /* BSD flock() exclusive lock present */
-#define _FCREAT     0x0200  /* open with file create */
-#define _FTRUNC     0x0400  /* open with truncation */
-#define _FEXCL      0x0800  /* error on open if file exists */
-#define _FNBIO      0x1000  /* non blocking I/O (sys5 style) */
-#define _FSYNC      0x2000  /* do all writes synchronously */
-#define _FNONBLOCK  0x4000  /* non blocking I/O (POSIX style) */
-#define _FNDELAY    _FNONBLOCK  /* non blocking I/O (4.2 style) */
-#define _FNOCTTY    0x8000  /* don't assign a ctty on this open */
-
-
-#ifndef O_RDONLY
-#define O_RDONLY    0       /* +1 == FREAD */
-#endif
-#ifndef O_WRONLY
-#define O_WRONLY    1       /* +1 == FWRITE */
-#endif
-#ifndef O_RDWR
-#define O_RDWR      2       /* +1 == FREAD|FWRITE */
-#endif
-#ifndef O_APPEND
-#define O_APPEND    _FAPPEND
-#endif
-#ifndef O_CREAT
-#define O_CREAT     _FCREAT
-#endif
-#ifndef O_TRUNC
-#define O_TRUNC     _FTRUNC
-#endif
-#ifndef O_EXCL
-#define O_EXCL      _FEXCL
-#endif
-#ifndef O_SYNC
-#define O_SYNC      _FSYNC
-#endif
-
-#endif
-
-
-int     isatty      (int fd);
-char *  ttyname     (int desc);
-
-unsigned int sleep(unsigned int seconds);
-int usleep(useconds_t usec);
-
-pid_t getpid(void);
-pid_t getppid(void);
-uid_t getuid(void);
-uid_t geteuid(void);
-gid_t getgid(void);
-gid_t getegid(void);
-
-#endif /* _SYS_UNISTD_H */
diff --git a/components/libc/compilers/common_except_gcc/unistd.h b/components/libc/compilers/common_except_gcc/unistd.h
deleted file mode 100644
index cd77a12e3b..0000000000
--- a/components/libc/compilers/common_except_gcc/unistd.h
+++ /dev/null
@@ -1,10 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#include "sys/unistd.h"
-
diff --git a/include/rtlibc.h b/include/rtlibc.h
index 6f6777a2f3..50bddc6ee8 100644
--- a/include/rtlibc.h
+++ b/include/rtlibc.h
@@ -23,6 +23,13 @@
 #include "libc/libc_limits.h"
 #include "libc/libc_stdio.h"
 
+#ifndef RT_USING_LIBC
+#if defined(__CC_ARM) || defined(__CLANG_ARM) || defined(__IAR_SYSTEMS_ICC__)
+typedef signed long off_t;
+typedef int mode_t;
+#endif
+#endif
+
 #if defined(__MINGW32__) || defined(_WIN32)
 typedef signed long off_t;
 typedef int mode_t;
-- 
cgit v1.3.1


From c871726e8930099efc1bbade8907e8b4571615eb Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Wed, 21 Apr 2021 02:16:29 +0800
Subject: update readme

---
 components/libc/compilers/common/all/readme.md    | 2 +-
 components/libc/compilers/common/excgcc/readme.md | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/all/readme.md b/components/libc/compilers/common/all/readme.md
index 81bb005d0a..856ddeb045 100644
--- a/components/libc/compilers/common/all/readme.md
+++ b/components/libc/compilers/common/all/readme.md
@@ -1,6 +1,6 @@
 ## Attentions
 
-1. This folder is "common" for armlibc newlibc and dlib.
+1. This folder is "common" for all toolchains.
 
 2. If you want to add new `.c` files, please do not forget to fix SConscript file too. eg:
 
diff --git a/components/libc/compilers/common/excgcc/readme.md b/components/libc/compilers/common/excgcc/readme.md
index 15f8e60d59..b10940d003 100644
--- a/components/libc/compilers/common/excgcc/readme.md
+++ b/components/libc/compilers/common/excgcc/readme.md
@@ -1,3 +1,3 @@
 ## Attentions
 
-This folder is "common" for armlibc and dlib.
\ No newline at end of file
+This folder is "common" for toolchains excluding gcc.
\ No newline at end of file
-- 
cgit v1.3.1


From f9ba41f4c22855b4dff8c422283ea6832ad1fc2b Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 25 Apr 2021 21:10:31 +0800
Subject: 更改libc目录为common 以及 none-gcc
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/SConscript        |  34 +-
 components/libc/compilers/common/all/SConscript    |  27 -
 components/libc/compilers/common/all/dirent.h      |  65 ---
 components/libc/compilers/common/all/readme.md     |  10 -
 components/libc/compilers/common/all/stdlib.c      |  28 -
 components/libc/compilers/common/all/sys/ioctl.h   |  18 -
 components/libc/compilers/common/all/sys/mman.h    |  60 --
 components/libc/compilers/common/all/sys/statfs.h  |  21 -
 components/libc/compilers/common/all/sys/termios.h |   8 -
 components/libc/compilers/common/all/sys/time.h    | 101 ----
 components/libc/compilers/common/all/termios.h     |  19 -
 components/libc/compilers/common/all/time.c        | 643 ---------------------
 components/libc/compilers/common/all/unistd.c      |  88 ---
 components/libc/compilers/common/dirent.h          |  65 +++
 components/libc/compilers/common/excgcc/SConscript |  13 -
 components/libc/compilers/common/excgcc/fcntl.h    |  18 -
 components/libc/compilers/common/excgcc/readme.md  |   3 -
 components/libc/compilers/common/excgcc/sys/stat.h |   8 -
 .../libc/compilers/common/excgcc/sys/types.h       |  36 --
 .../libc/compilers/common/excgcc/sys/unistd.h      |  83 ---
 components/libc/compilers/common/excgcc/unistd.h   |  10 -
 .../libc/compilers/common/none-gcc/SConscript      |  13 +
 components/libc/compilers/common/none-gcc/fcntl.h  |  18 +
 .../libc/compilers/common/none-gcc/readme.md       |   3 +
 .../libc/compilers/common/none-gcc/sys/stat.h      |   8 +
 .../libc/compilers/common/none-gcc/sys/types.h     |  36 ++
 .../libc/compilers/common/none-gcc/sys/unistd.h    |  83 +++
 components/libc/compilers/common/none-gcc/unistd.h |  10 +
 components/libc/compilers/common/readme.md         |  10 +
 components/libc/compilers/common/stdlib.c          |  28 +
 components/libc/compilers/common/sys/ioctl.h       |  18 +
 components/libc/compilers/common/sys/mman.h        |  60 ++
 components/libc/compilers/common/sys/statfs.h      |  21 +
 components/libc/compilers/common/sys/termios.h     |   8 +
 components/libc/compilers/common/sys/time.h        | 101 ++++
 components/libc/compilers/common/termios.h         |  19 +
 components/libc/compilers/common/time.c            | 643 +++++++++++++++++++++
 components/libc/compilers/common/unistd.c          |  88 +++
 38 files changed, 1255 insertions(+), 1270 deletions(-)
 delete mode 100644 components/libc/compilers/common/all/SConscript
 delete mode 100644 components/libc/compilers/common/all/dirent.h
 delete mode 100644 components/libc/compilers/common/all/readme.md
 delete mode 100644 components/libc/compilers/common/all/stdlib.c
 delete mode 100644 components/libc/compilers/common/all/sys/ioctl.h
 delete mode 100644 components/libc/compilers/common/all/sys/mman.h
 delete mode 100644 components/libc/compilers/common/all/sys/statfs.h
 delete mode 100644 components/libc/compilers/common/all/sys/termios.h
 delete mode 100644 components/libc/compilers/common/all/sys/time.h
 delete mode 100644 components/libc/compilers/common/all/termios.h
 delete mode 100644 components/libc/compilers/common/all/time.c
 delete mode 100644 components/libc/compilers/common/all/unistd.c
 create mode 100644 components/libc/compilers/common/dirent.h
 delete mode 100644 components/libc/compilers/common/excgcc/SConscript
 delete mode 100644 components/libc/compilers/common/excgcc/fcntl.h
 delete mode 100644 components/libc/compilers/common/excgcc/readme.md
 delete mode 100644 components/libc/compilers/common/excgcc/sys/stat.h
 delete mode 100644 components/libc/compilers/common/excgcc/sys/types.h
 delete mode 100644 components/libc/compilers/common/excgcc/sys/unistd.h
 delete mode 100644 components/libc/compilers/common/excgcc/unistd.h
 create mode 100644 components/libc/compilers/common/none-gcc/SConscript
 create mode 100644 components/libc/compilers/common/none-gcc/fcntl.h
 create mode 100644 components/libc/compilers/common/none-gcc/readme.md
 create mode 100644 components/libc/compilers/common/none-gcc/sys/stat.h
 create mode 100644 components/libc/compilers/common/none-gcc/sys/types.h
 create mode 100644 components/libc/compilers/common/none-gcc/sys/unistd.h
 create mode 100644 components/libc/compilers/common/none-gcc/unistd.h
 create mode 100644 components/libc/compilers/common/readme.md
 create mode 100644 components/libc/compilers/common/stdlib.c
 create mode 100644 components/libc/compilers/common/sys/ioctl.h
 create mode 100644 components/libc/compilers/common/sys/mman.h
 create mode 100644 components/libc/compilers/common/sys/statfs.h
 create mode 100644 components/libc/compilers/common/sys/termios.h
 create mode 100644 components/libc/compilers/common/sys/time.h
 create mode 100644 components/libc/compilers/common/termios.h
 create mode 100644 components/libc/compilers/common/time.c
 create mode 100644 components/libc/compilers/common/unistd.c

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/SConscript b/components/libc/compilers/common/SConscript
index 4c815c49b8..319e1a3555 100644
--- a/components/libc/compilers/common/SConscript
+++ b/components/libc/compilers/common/SConscript
@@ -1,15 +1,27 @@
-# RT-Thread building script for bridge
-
-import os
 from building import *
 
-cwd = GetCurrentDir()
-objs = []
-list = os.listdir(cwd)
+Import('rtconfig')
+
+src   = []
+cwd   = GetCurrentDir()
+group = []
+CPPPATH = [cwd]
+
+if GetDepend('RT_USING_LIBC'):
+    src += Glob('*.c')
+else:
+    if GetDepend('RT_LIBC_USING_TIME'):
+        src += ['time.c']
+
+if GetDepend('RT_USING_POSIX') == False:
+    SrcRemove(src, ['unistd.c'])
+
+if rtconfig.CROSS_TOOL == 'keil':
+    CPPDEFINES = ['__CLK_TCK=RT_TICK_PER_SECOND']
+else:
+    CPPDEFINES = []
 
-for d in list:
-    path = os.path.join(cwd, d)
-    if os.path.isfile(os.path.join(path, 'SConscript')):
-        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+if GetDepend('RT_USING_LIBC') or GetDepend('RT_LIBC_USING_TIME'):
+    group = DefineGroup('libc', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
 
-Return('objs')
+Return('group')
diff --git a/components/libc/compilers/common/all/SConscript b/components/libc/compilers/common/all/SConscript
deleted file mode 100644
index 319e1a3555..0000000000
--- a/components/libc/compilers/common/all/SConscript
+++ /dev/null
@@ -1,27 +0,0 @@
-from building import *
-
-Import('rtconfig')
-
-src   = []
-cwd   = GetCurrentDir()
-group = []
-CPPPATH = [cwd]
-
-if GetDepend('RT_USING_LIBC'):
-    src += Glob('*.c')
-else:
-    if GetDepend('RT_LIBC_USING_TIME'):
-        src += ['time.c']
-
-if GetDepend('RT_USING_POSIX') == False:
-    SrcRemove(src, ['unistd.c'])
-
-if rtconfig.CROSS_TOOL == 'keil':
-    CPPDEFINES = ['__CLK_TCK=RT_TICK_PER_SECOND']
-else:
-    CPPDEFINES = []
-
-if GetDepend('RT_USING_LIBC') or GetDepend('RT_LIBC_USING_TIME'):
-    group = DefineGroup('libc', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
-
-Return('group')
diff --git a/components/libc/compilers/common/all/dirent.h b/components/libc/compilers/common/all/dirent.h
deleted file mode 100644
index bfba586093..0000000000
--- a/components/libc/compilers/common/all/dirent.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef __RTT_DIRENT_H__
-#define __RTT_DIRENT_H__
-
-#include <rtthread.h>
-
-/*
-* dirent.h - format of directory entries
- * Ref: http://www.opengroup.org/onlinepubs/009695399/basedefs/dirent.h.html
- */
-
-/* File types */
-#define FT_REGULAR      0   /* regular file */
-#define FT_SOCKET       1   /* socket file  */
-#define FT_DIRECTORY    2   /* directory    */
-#define FT_USER         3   /* user defined */
-
-#define DT_UNKNOWN      0x00
-#define DT_REG          0x01
-#define DT_DIR          0x02
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef HAVE_DIR_STRUCTURE
-typedef struct
-{
-    int fd;                         /* directory file */
-    char buf[512];
-    int num;
-    int cur;
-} DIR;
-#endif
-
-#ifndef HAVE_DIRENT_STRUCTURE
-struct dirent
-{
-    rt_uint8_t  d_type;             /* The type of the file */
-    rt_uint8_t  d_namlen;           /* The length of the not including the terminating null file name */
-    rt_uint16_t d_reclen;           /* length of this record */
-    char d_name[256];               /* The null-terminated file name */
-};
-#endif
-
-int            closedir(DIR *);
-DIR           *opendir(const char *);
-struct dirent *readdir(DIR *);
-int            readdir_r(DIR *, struct dirent *, struct dirent **);
-void           rewinddir(DIR *);
-void           seekdir(DIR *, long int);
-long           telldir(DIR *);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/components/libc/compilers/common/all/readme.md b/components/libc/compilers/common/all/readme.md
deleted file mode 100644
index 856ddeb045..0000000000
--- a/components/libc/compilers/common/all/readme.md
+++ /dev/null
@@ -1,10 +0,0 @@
-## Attentions
-
-1. This folder is "common" for all toolchains.
-
-2. If you want to add new `.c` files, please do not forget to fix SConscript file too. eg:
-
-```python
-if GetDepend('RT_USING_POSIX') == False:
-        SrcRemove(src, ['unistd.c'])
-```
\ No newline at end of file
diff --git a/components/libc/compilers/common/all/stdlib.c b/components/libc/compilers/common/all/stdlib.c
deleted file mode 100644
index 9d8952e99e..0000000000
--- a/components/libc/compilers/common/all/stdlib.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2021-02-15     Meco Man     first version
- */
-
-#include <rtthread.h>
-
-void __rt_libc_exit(int status)
-{
-    rt_thread_t self = rt_thread_self();
-
-    if (self != RT_NULL)
-    {
-        rt_kprintf("thread:%s exit:%d!\n", self->name, status);
-        rt_thread_control(self, RT_THREAD_CTRL_CLOSE, RT_NULL);
-    }
-}
-
-int __rt_libc_system(const char *string)
-{
-    /* TODO */
-    return 0;
-}
diff --git a/components/libc/compilers/common/all/sys/ioctl.h b/components/libc/compilers/common/all/sys/ioctl.h
deleted file mode 100644
index 648d90230d..0000000000
--- a/components/libc/compilers/common/all/sys/ioctl.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-01     Meco Man     First Version
- */
-#ifndef _SYS_IOCTL_H
-#define _SYS_IOCTL_H
-
-#include <rtconfig.h>
-#ifdef RT_USING_POSIX
-#include <dfs_posix.h>
-#endif
-
-#endif
diff --git a/components/libc/compilers/common/all/sys/mman.h b/components/libc/compilers/common/all/sys/mman.h
deleted file mode 100644
index a9235d61f0..0000000000
--- a/components/libc/compilers/common/all/sys/mman.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017/11/30     Bernard      The first version.
- */
-
-#ifndef _SYS_MMAN_H
-#define _SYS_MMAN_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <sys/types.h>
-    
-#define MAP_FAILED     ((void *) -1)
-
-#define MAP_SHARED     0x01
-#define MAP_PRIVATE    0x02
-#define MAP_TYPE       0x0f
-#define MAP_FIXED      0x10
-#define MAP_ANON       0x20
-#define MAP_ANONYMOUS  MAP_ANON
-#define MAP_NORESERVE  0x4000
-#define MAP_GROWSDOWN  0x0100
-#define MAP_DENYWRITE  0x0800
-#define MAP_EXECUTABLE 0x1000
-#define MAP_LOCKED     0x2000
-#define MAP_POPULATE   0x8000
-#define MAP_NONBLOCK   0x10000
-#define MAP_STACK      0x20000
-#define MAP_HUGETLB    0x40000
-#define MAP_FILE       0
-
-#define PROT_NONE      0
-#define PROT_READ      1
-#define PROT_WRITE     2
-#define PROT_EXEC      4
-#define PROT_GROWSDOWN 0x01000000
-#define PROT_GROWSUP   0x02000000
-
-#define MS_ASYNC       1
-#define MS_INVALIDATE  2
-#define MS_SYNC        4
-
-#define MCL_CURRENT    1
-#define MCL_FUTURE     2
-#define MCL_ONFAULT    4
-
-void *mmap (void *start, size_t len, int prot, int flags, int fd, off_t off);
-int munmap (void *start, size_t len);
-
-#ifdef __cplusplus
-}
-#endif
-#endif
diff --git a/components/libc/compilers/common/all/sys/statfs.h b/components/libc/compilers/common/all/sys/statfs.h
deleted file mode 100644
index 0996af9a18..0000000000
--- a/components/libc/compilers/common/all/sys/statfs.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef __RTT_STATFS_H__
-#define __RTT_STATFS_H__
-
-#include <rtthread.h>
-
-struct statfs
-{
-    rt_size_t f_bsize;   /* block size */
-    rt_size_t f_blocks;  /* total data blocks in file system */
-    rt_size_t f_bfree;   /* free blocks in file system */
-};
-
-#endif
diff --git a/components/libc/compilers/common/all/sys/termios.h b/components/libc/compilers/common/all/sys/termios.h
deleted file mode 100644
index c4b42083c4..0000000000
--- a/components/libc/compilers/common/all/sys/termios.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
diff --git a/components/libc/compilers/common/all/sys/time.h b/components/libc/compilers/common/all/sys/time.h
deleted file mode 100644
index ef1c810608..0000000000
--- a/components/libc/compilers/common/all/sys/time.h
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-07     Meco Man     combine gcc armcc iccarm
- * 2021-02-12     Meco Man     move all definitions located in <clock_time.h> to this file
- */
-#ifndef _SYS_TIME_H_
-#define _SYS_TIME_H_
-
-#include <rtconfig.h>
-#include <time.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Skip define timespec for IAR version over 8.10.1 where __VER__ is 8010001.
- */
-#if defined ( __ICCARM__ ) && (__VER__ >= 8010001)
-#define _TIMESPEC_DEFINED
-#endif
-
-
-#ifndef _TIMEVAL_DEFINED
-#define _TIMEVAL_DEFINED
-/*
- * Structure returned by gettimeofday(2) system call,
- * and used in other calls.
- */
-#if !(defined(_WIN32))
-struct timeval {
-    long    tv_sec;     /* seconds */
-    long    tv_usec;    /* and microseconds */
-};
-#endif
-#endif /* _TIMEVAL_DEFINED */
-
-#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && !defined (__ICCARM__) && !defined (_WIN32)
-struct timespec {
-    time_t  tv_sec;     /* seconds */
-    long    tv_nsec;    /* and nanoseconds */
-};
-#endif
-
-struct timezone {
-  int tz_minuteswest;   /* minutes west of Greenwich */
-  int tz_dsttime;       /* type of dst correction */
-};
-
-int stime(const time_t *t);
-time_t timegm(struct tm * const t);
-int gettimeofday(struct timeval *tv, struct timezone *tz);
-int settimeofday(const struct timeval *tv, const struct timezone *tz);
-#if defined(__ARMCC_VERSION) || defined (__ICCARM__)
-struct tm *gmtime_r(const time_t *timep, struct tm *r);
-#endif
-
-#ifdef RT_USING_POSIX
-#include <sys/types.h>
-/* posix clock and timer */
-#define MILLISECOND_PER_SECOND  1000UL
-#define MICROSECOND_PER_SECOND  1000000UL
-#define NANOSECOND_PER_SECOND   1000000000UL
-
-#define MILLISECOND_PER_TICK    (MILLISECOND_PER_SECOND / RT_TICK_PER_SECOND)
-#define MICROSECOND_PER_TICK    (MICROSECOND_PER_SECOND / RT_TICK_PER_SECOND)
-#define NANOSECOND_PER_TICK     (NANOSECOND_PER_SECOND  / RT_TICK_PER_SECOND)
-
-#ifndef CLOCK_REALTIME
-#define CLOCK_REALTIME      1
-#endif
-
-#define CLOCK_CPUTIME_ID    2
-
-#ifndef CLOCK_PROCESS_CPUTIME_ID
-#define CLOCK_PROCESS_CPUTIME_ID CLOCK_CPUTIME_ID
-#endif
-#ifndef CLOCK_THREAD_CPUTIME_ID
-#define CLOCK_THREAD_CPUTIME_ID  CLOCK_CPUTIME_ID
-#endif
-
-#ifndef CLOCK_MONOTONIC
-#define CLOCK_MONOTONIC     4
-#endif
-
-int clock_getres  (clockid_t clockid, struct timespec *res);
-int clock_gettime (clockid_t clockid, struct timespec *tp);
-int clock_settime (clockid_t clockid, const struct timespec *tp);
-int clock_time_to_tick(const struct timespec *time);
-#endif /* RT_USING_POSIX */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _SYS_TIME_H_ */
diff --git a/components/libc/compilers/common/all/termios.h b/components/libc/compilers/common/all/termios.h
deleted file mode 100644
index 2960d52c58..0000000000
--- a/components/libc/compilers/common/all/termios.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef _TERMIOS_H__
-#define _TERMIOS_H__
-
-#include <rtconfig.h>
-
-#ifdef RT_USING_POSIX_TERMIOS
-#include <sys/types.h>
-#include <posix_termios.h>
-#endif
-
-#endif
diff --git a/components/libc/compilers/common/all/time.c b/components/libc/compilers/common/all/time.c
deleted file mode 100644
index 33d8907165..0000000000
--- a/components/libc/compilers/common/all/time.c
+++ /dev/null
@@ -1,643 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2019-08-21     zhangjun     copy from minilibc
- * 2020-09-07     Meco Man     combine gcc armcc iccarm
- * 2021-02-05     Meco Man     add timegm()
- * 2021-02-07     Meco Man     fixed gettimeofday()
- * 2021-02-08     Meco Man     add settimeofday() stime()
- * 2021-02-10     Meco Man     add ctime_r() and re-implement ctime()
- * 2021-02-11     Meco Man     fix bug #3183 - align days[] and months[] to 4 bytes
- * 2021-02-12     Meco Man     add errno
- * 2012-12-08     Bernard      <clock_time.c> fix the issue of _timevalue.tv_usec initialization,
- *                             which found by Rob <rdent@iinet.net.au>
- * 2021-02-12     Meco Man     move all of the functions located in <clock_time.c> to this file
- * 2021-03-15     Meco Man     fixed bug: https://club.rt-thread.org/ask/question/423650.html
- */
-
-#include <sys/time.h>
-#include <rtthread.h>
-
-#ifdef RT_USING_DEVICE
-#include <rtdevice.h>
-#endif
-
-#define DBG_TAG    "TIME"
-#define DBG_LVL    DBG_INFO
-#include <rtdbg.h>
-
-/* seconds per day */
-#define SPD 24*60*60
-
-/* days per month -- nonleap! */
-static const short __spm[13] =
-{
-    0,
-    (31),
-    (31 + 28),
-    (31 + 28 + 31),
-    (31 + 28 + 31 + 30),
-    (31 + 28 + 31 + 30 + 31),
-    (31 + 28 + 31 + 30 + 31 + 30),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30),
-    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31),
-};
-
-ALIGN(4) static const char days[] = "Sun Mon Tue Wed Thu Fri Sat ";
-ALIGN(4) static const char months[] = "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ";
-
-static int __isleap(int year)
-{
-    /* every fourth year is a leap year except for century years that are
-     * not divisible by 400. */
-    /*  return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); */
-    return (!(year % 4) && ((year % 100) || !(year % 400)));
-}
-
-static void num2str(char *c, int i)
-{
-    c[0] = i / 10 + '0';
-    c[1] = i % 10 + '0';
-}
-
-/**
- * Get time from RTC device (without timezone)
- * @param tv: struct timeval
- * @return -1 failure; 1 success
- */
-static int get_timeval(struct timeval *tv)
-{
-#ifdef RT_USING_RTC
-    static rt_device_t device = RT_NULL;
-    rt_err_t rst = -RT_ERROR;
-
-    if (tv == RT_NULL)
-        return -1;
-
-    /* default is 0 */
-    tv->tv_sec = 0;
-    tv->tv_usec = 0;
-
-    /* optimization: find rtc device only first */
-    if (device == RT_NULL)
-    {
-        device = rt_device_find("rtc");
-    }
-
-    /* read timestamp from RTC device */
-    if (device != RT_NULL)
-    {
-        if (rt_device_open(device, 0) == RT_EOK)
-        {
-            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &tv->tv_sec);
-            rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME_US, &tv->tv_usec);
-            rt_device_close(device);
-        }
-    }
-    else
-    {
-        /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
-        rt_kprintf("Cannot find a RTC device to provide time!\r\n");
-        return -1;
-    }
-
-    return (rst < 0) ? -1 : 1;
-
-#else
-    /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
-    rt_kprintf("Cannot find a RTC device to provide time!\r\n");
-    return -1;
-#endif /* RT_USING_RTC */
-}
-
-/**
- * Set time to RTC device (without timezone)
- * @param tv: struct timeval
- * @return -1 failure; 1 success
- */
-static int set_timeval(struct timeval *tv)
-{
-#ifdef RT_USING_RTC
-    static rt_device_t device = RT_NULL;
-    rt_err_t rst = -RT_ERROR;
-
-    if (tv == RT_NULL)
-        return -1;
-
-    /* optimization: find rtc device only first */
-    if (device == RT_NULL)
-    {
-        device = rt_device_find("rtc");
-    }
-
-    /* read timestamp from RTC device */
-    if (device != RT_NULL)
-    {
-        if (rt_device_open(device, 0) == RT_EOK)
-        {
-            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &tv->tv_sec);
-            rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME_US, &tv->tv_usec);
-            rt_device_close(device);
-        }
-    }
-    else
-    {
-        LOG_W("Cannot find a RTC device to provide time!");
-        return -1;
-    }
-
-    return (rst < 0) ? -1 : 1;
-
-#else
-    LOG_W("Cannot find a RTC device to provide time!");
-    return -1;
-#endif /* RT_USING_RTC */
-}
-
-struct tm *gmtime_r(const time_t *timep, struct tm *r)
-{
-    time_t i;
-    register time_t work = *timep % (SPD);
-    r->tm_sec = work % 60;
-    work /= 60;
-    r->tm_min = work % 60;
-    r->tm_hour = work / 60;
-    work = *timep / (SPD);
-    r->tm_wday = (4 + work) % 7;
-    for (i = 1970;; ++i)
-    {
-        register time_t k = __isleap(i) ? 366 : 365;
-        if (work >= k)
-            work -= k;
-        else
-            break;
-    }
-    r->tm_year = i - 1900;
-    r->tm_yday = work;
-
-    r->tm_mday = 1;
-    if (__isleap(i) && (work > 58))
-    {
-        if (work == 59)
-            r->tm_mday = 2; /* 29.2. */
-        work -= 1;
-    }
-
-    for (i = 11; i && (__spm[i] > work); --i)
-        ;
-    r->tm_mon = i;
-    r->tm_mday += work - __spm[i];
-
-    r->tm_isdst = 0;
-    return r;
-}
-RTM_EXPORT(gmtime_r);
-
-struct tm* gmtime(const time_t* t)
-{
-    static struct tm tmp;
-    return gmtime_r(t, &tmp);
-}
-RTM_EXPORT(gmtime);
-
-/*TODO: timezone */
-struct tm* localtime_r(const time_t* t, struct tm* r)
-{
-    time_t local_tz;
-    int utc_plus;
-
-    utc_plus = 8; /* GMT: UTC+8 */
-    local_tz = *t + utc_plus * 3600;
-    return gmtime_r(&local_tz, r);
-}
-RTM_EXPORT(localtime_r);
-
-struct tm* localtime(const time_t* t)
-{
-    static struct tm tmp;
-    return localtime_r(t, &tmp);
-}
-RTM_EXPORT(localtime);
-
-/* TODO: timezone */
-time_t mktime(struct tm * const t)
-{
-    time_t timestamp;
-    int utc_plus;
-
-    utc_plus = 8; /* GMT: UTC+8 */
-    timestamp = timegm(t);
-    timestamp = timestamp - 3600 * utc_plus;
-    return timestamp;
-}
-RTM_EXPORT(mktime);
-
-char* asctime_r(const struct tm *t, char *buf)
-{
-    /* "Wed Jun 30 21:49:08 1993\n" */
-    *(int*) buf = *(int*) (days + (t->tm_wday << 2));
-    *(int*) (buf + 4) = *(int*) (months + (t->tm_mon << 2));
-    num2str(buf + 8, t->tm_mday);
-    if (buf[8] == '0')
-        buf[8] = ' ';
-    buf[10] = ' ';
-    num2str(buf + 11, t->tm_hour);
-    buf[13] = ':';
-    num2str(buf + 14, t->tm_min);
-    buf[16] = ':';
-    num2str(buf + 17, t->tm_sec);
-    buf[19] = ' ';
-    num2str(buf + 20, (t->tm_year + 1900) / 100);
-    num2str(buf + 22, (t->tm_year + 1900) % 100);
-    buf[24] = '\n';
-    buf[25] = '\0';
-    return buf;
-}
-RTM_EXPORT(asctime_r);
-
-char* asctime(const struct tm *timeptr)
-{
-    static char buf[26];
-    return asctime_r(timeptr, buf);
-}
-RTM_EXPORT(asctime);
-
-char *ctime_r (const time_t * tim_p, char * result)
-{
-    struct tm tm;
-    return asctime_r (localtime_r (tim_p, &tm), result);
-}
-RTM_EXPORT(ctime_r);
-
-char* ctime(const time_t *tim_p)
-{
-    return asctime (localtime (tim_p));
-}
-RTM_EXPORT(ctime);
-
-/**
- * Returns the current time.
- *
- * @param time_t * t the timestamp pointer, if not used, keep NULL.
- *
- * @return The value ((time_t)-1) is returned if the calendar time is not available.
- *         If timer is not a NULL pointer, the return value is also stored in timer.
- *
- */
-RT_WEAK time_t time(time_t *t)
-{
-    struct timeval now;
-
-    if(get_timeval(&now) > 0)
-    {
-        if (t)
-        {
-            *t = now.tv_sec;
-        }
-        return now.tv_sec;
-    }
-    else
-    {
-        errno = EFAULT;
-        return ((time_t)-1);
-    }
-}
-RTM_EXPORT(time);
-
-RT_WEAK clock_t clock(void)
-{
-    return rt_tick_get();
-}
-RTM_EXPORT(clock);
-
-int stime(const time_t *t)
-{
-    struct timeval tv;
-
-    if (!t)
-    {
-        errno = EFAULT;
-        return -1;
-    }
-
-    tv.tv_sec = *t;
-    if (set_timeval(&tv) > 0)
-    {
-        return 0;
-    }
-    else
-    {
-        errno = EFAULT;
-        return -1;
-    }
-}
-RTM_EXPORT(stime);
-
-time_t timegm(struct tm * const t)
-{
-    register time_t day;
-    register time_t i;
-    register time_t years = t->tm_year - 70;
-
-    if (t->tm_sec > 60)
-    {
-        t->tm_min += t->tm_sec / 60;
-        t->tm_sec %= 60;
-    }
-    if (t->tm_min > 60)
-    {
-        t->tm_hour += t->tm_min / 60;
-        t->tm_min %= 60;
-    }
-    if (t->tm_hour > 24)
-    {
-        t->tm_mday += t->tm_hour / 24;
-        t->tm_hour %= 24;
-    }
-    if (t->tm_mon > 12)
-    {
-        t->tm_year += t->tm_mon / 12;
-        t->tm_mon %= 12;
-    }
-    while (t->tm_mday > __spm[1 + t->tm_mon])
-    {
-        if (t->tm_mon == 1 && __isleap(t->tm_year + 1900))
-        {
-            --t->tm_mday;
-        }
-        t->tm_mday -= __spm[t->tm_mon];
-        ++t->tm_mon;
-        if (t->tm_mon > 11)
-        {
-            t->tm_mon = 0;
-            ++t->tm_year;
-        }
-    }
-
-    if (t->tm_year < 70)
-        return (time_t) - 1;
-
-    /* Days since 1970 is 365 * number of years + number of leap years since 1970 */
-    day = years * 365 + (years + 1) / 4;
-
-    /* After 2100 we have to substract 3 leap years for every 400 years
-     This is not intuitive. Most mktime implementations do not support
-     dates after 2059, anyway, so we might leave this out for it's
-     bloat. */
-    if (years >= 131)
-    {
-        years -= 131;
-        years /= 100;
-        day -= (years >> 2) * 3 + 1;
-        if ((years &= 3) == 3)
-            years--;
-        day -= years;
-    }
-
-    day += t->tm_yday = __spm[t->tm_mon] + t->tm_mday - 1 +
-                        (__isleap(t->tm_year + 1900) & (t->tm_mon > 1));
-
-    /* day is now the number of days since 'Jan 1 1970' */
-    i = 7;
-    t->tm_wday = (day + 4) % i; /* Sunday=0, Monday=1, ..., Saturday=6 */
-
-    i = 24;
-    day *= i;
-    i = 60;
-    return ((day + t->tm_hour) * i + t->tm_min) * i + t->tm_sec;
-}
-RTM_EXPORT(timegm);
-
-/* TODO: timezone */
-int gettimeofday(struct timeval *tv, struct timezone *tz)
-{
-    if (tv != RT_NULL && get_timeval(tv) > 0)
-    {
-        return 0;
-    }
-    else
-    {
-        errno = EFAULT;
-        return -1;
-    }
-}
-RTM_EXPORT(gettimeofday);
-
-/* TODO: timezone */
-int settimeofday(const struct timeval *tv, const struct timezone *tz)
-{
-    if (tv != RT_NULL)
-    {
-        if(tv->tv_sec >= 0 && tv->tv_usec >= 0)
-        {
-            if(set_timeval((struct timeval *)tv) > 0)
-            {
-                return 0;
-            }
-            else
-            {
-                errno = EFAULT;
-                return -1;
-            }
-        }
-        else
-        {
-            errno = EINVAL;
-            return -1;
-        }
-    }
-    else
-    {
-        errno = EFAULT;
-        return -1;
-    }
-}
-RTM_EXPORT(settimeofday);
-
-/* inherent in the toolchain */
-RTM_EXPORT(difftime);
-RTM_EXPORT(strftime);
-
-#ifdef RT_USING_POSIX
-static struct timeval _timevalue;
-static int clock_time_system_init()
-{
-    time_t time;
-    rt_tick_t tick;
-    rt_device_t device;
-
-    time = 0;
-    device = rt_device_find("rtc");
-    if (device != RT_NULL)
-    {
-        /* get realtime seconds */
-        rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time);
-    }
-
-    /* get tick */
-    tick = rt_tick_get();
-
-    _timevalue.tv_usec = (tick%RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
-    _timevalue.tv_sec = time - tick/RT_TICK_PER_SECOND - 1;
-
-    return 0;
-}
-INIT_COMPONENT_EXPORT(clock_time_system_init);
-
-int clock_getres(clockid_t clockid, struct timespec *res)
-{
-    int ret = 0;
-
-    if (res == RT_NULL)
-    {
-        rt_set_errno(EINVAL);
-        return -1;
-    }
-
-    switch (clockid)
-    {
-    case CLOCK_REALTIME:
-        res->tv_sec = 0;
-        res->tv_nsec = NANOSECOND_PER_SECOND/RT_TICK_PER_SECOND;
-        break;
-
-#ifdef RT_USING_CPUTIME
-    case CLOCK_CPUTIME_ID:
-        res->tv_sec  = 0;
-        res->tv_nsec = clock_cpu_getres();
-        break;
-#endif
-
-    default:
-        ret = -1;
-        rt_set_errno(EINVAL);
-        break;
-    }
-
-    return ret;
-}
-RTM_EXPORT(clock_getres);
-
-int clock_gettime(clockid_t clockid, struct timespec *tp)
-{
-    int ret = 0;
-
-    if (tp == RT_NULL)
-    {
-        rt_set_errno(EINVAL);
-        return -1;
-    }
-
-    switch (clockid)
-    {
-    case CLOCK_REALTIME:
-        {
-            /* get tick */
-            int tick = rt_tick_get();
-
-            tp->tv_sec  = _timevalue.tv_sec + tick / RT_TICK_PER_SECOND;
-            tp->tv_nsec = (_timevalue.tv_usec + (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK) * 1000;
-        }
-        break;
-
-#ifdef RT_USING_CPUTIME
-    case CLOCK_CPUTIME_ID:
-        {
-            float unit = 0;
-            long long cpu_tick;
-
-            unit = clock_cpu_getres();
-            cpu_tick = clock_cpu_gettime();
-
-            tp->tv_sec  = ((int)(cpu_tick * unit)) / NANOSECOND_PER_SECOND;
-            tp->tv_nsec = ((int)(cpu_tick * unit)) % NANOSECOND_PER_SECOND;
-        }
-        break;
-#endif
-    default:
-        rt_set_errno(EINVAL);
-        ret = -1;
-    }
-
-    return ret;
-}
-RTM_EXPORT(clock_gettime);
-
-int clock_settime(clockid_t clockid, const struct timespec *tp)
-{
-    int second;
-    rt_tick_t tick;
-    rt_device_t device;
-
-    if ((clockid != CLOCK_REALTIME) || (tp == RT_NULL))
-    {
-        rt_set_errno(EINVAL);
-
-        return -1;
-    }
-
-    /* get second */
-    second = tp->tv_sec;
-    /* get tick */
-    tick = rt_tick_get();
-
-    /* update timevalue */
-    _timevalue.tv_usec = MICROSECOND_PER_SECOND - (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
-    _timevalue.tv_sec = second - tick/RT_TICK_PER_SECOND - 1;
-
-    /* update for RTC device */
-    device = rt_device_find("rtc");
-    if (device != RT_NULL)
-    {
-        /* set realtime seconds */
-        rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &second);
-    }
-    else
-        return -1;
-
-    return 0;
-}
-RTM_EXPORT(clock_settime);
-
-int clock_time_to_tick(const struct timespec *time)
-{
-    int tick;
-    int nsecond, second;
-    struct timespec tp;
-
-    RT_ASSERT(time != RT_NULL);
-
-    tick = RT_WAITING_FOREVER;
-    if (time != NULL)
-    {
-        /* get current tp */
-        clock_gettime(CLOCK_REALTIME, &tp);
-
-        if ((time->tv_nsec - tp.tv_nsec) < 0)
-        {
-            nsecond = NANOSECOND_PER_SECOND - (tp.tv_nsec - time->tv_nsec);
-            second  = time->tv_sec - tp.tv_sec - 1;
-        }
-        else
-        {
-            nsecond = time->tv_nsec - tp.tv_nsec;
-            second  = time->tv_sec - tp.tv_sec;
-        }
-
-        tick = second * RT_TICK_PER_SECOND + nsecond * RT_TICK_PER_SECOND / NANOSECOND_PER_SECOND;
-        if (tick < 0) tick = 0;
-    }
-
-    return tick;
-}
-RTM_EXPORT(clock_time_to_tick);
-
-#endif /* RT_USING_POSIX */
diff --git a/components/libc/compilers/common/all/unistd.c b/components/libc/compilers/common/all/unistd.c
deleted file mode 100644
index 20130cbb8a..0000000000
--- a/components/libc/compilers/common/all/unistd.c
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-01     Meco Man     first Version
- * 2021-02-12     Meco Man     move all functions located in <pthread_sleep.c> to this file
- */
-
-#include <unistd.h>
-#include <rtthread.h>
-#include <rthw.h>
-
-#ifdef RT_USING_POSIX_TERMIOS
-#include "termios.h"
-
-int isatty(int fd)
-{
-    struct termios ts;
-    return(tcgetattr(fd,&ts) != -1);/*true if no error (is a tty)*/
-}
-RTM_EXPORT(isatty);
-#endif
-
-char *ttyname(int fd)
-{
-    return "/dev/tty0"; /*TODO: need to add more specific*/
-}
-RTM_EXPORT(ttyname);
-
-unsigned int sleep(unsigned int seconds)
-{
-    rt_tick_t delta_tick;
-
-    delta_tick = rt_tick_get();
-    rt_thread_delay(seconds * RT_TICK_PER_SECOND);
-    delta_tick = rt_tick_get() - delta_tick;
-
-    return seconds - delta_tick/RT_TICK_PER_SECOND;
-}
-RTM_EXPORT(sleep);
-
-int usleep(useconds_t usec)
-{
-    rt_thread_mdelay(usec / 1000u);
-    rt_hw_us_delay(usec % 1000u);
-    return 0;
-}
-RTM_EXPORT(usleep);
-
-pid_t getpid(void)
-{
-    /*TODO*/
-    return 0;
-}
-RTM_EXPORT(getpid);
-
-pid_t getppid(void)
-{
-    return 0;
-}
-RTM_EXPORT(getppid);
-
-uid_t getuid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(getuid);
-
-uid_t geteuid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(geteuid);
-
-gid_t getgid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(getgid);
-
-gid_t getegid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(getegid);
diff --git a/components/libc/compilers/common/dirent.h b/components/libc/compilers/common/dirent.h
new file mode 100644
index 0000000000..bfba586093
--- /dev/null
+++ b/components/libc/compilers/common/dirent.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef __RTT_DIRENT_H__
+#define __RTT_DIRENT_H__
+
+#include <rtthread.h>
+
+/*
+* dirent.h - format of directory entries
+ * Ref: http://www.opengroup.org/onlinepubs/009695399/basedefs/dirent.h.html
+ */
+
+/* File types */
+#define FT_REGULAR      0   /* regular file */
+#define FT_SOCKET       1   /* socket file  */
+#define FT_DIRECTORY    2   /* directory    */
+#define FT_USER         3   /* user defined */
+
+#define DT_UNKNOWN      0x00
+#define DT_REG          0x01
+#define DT_DIR          0x02
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef HAVE_DIR_STRUCTURE
+typedef struct
+{
+    int fd;                         /* directory file */
+    char buf[512];
+    int num;
+    int cur;
+} DIR;
+#endif
+
+#ifndef HAVE_DIRENT_STRUCTURE
+struct dirent
+{
+    rt_uint8_t  d_type;             /* The type of the file */
+    rt_uint8_t  d_namlen;           /* The length of the not including the terminating null file name */
+    rt_uint16_t d_reclen;           /* length of this record */
+    char d_name[256];               /* The null-terminated file name */
+};
+#endif
+
+int            closedir(DIR *);
+DIR           *opendir(const char *);
+struct dirent *readdir(DIR *);
+int            readdir_r(DIR *, struct dirent *, struct dirent **);
+void           rewinddir(DIR *);
+void           seekdir(DIR *, long int);
+long           telldir(DIR *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/components/libc/compilers/common/excgcc/SConscript b/components/libc/compilers/common/excgcc/SConscript
deleted file mode 100644
index 346e69b478..0000000000
--- a/components/libc/compilers/common/excgcc/SConscript
+++ /dev/null
@@ -1,13 +0,0 @@
-from building import *
-
-Import('rtconfig')
-
-src   = []
-cwd   = GetCurrentDir()
-CPPPATH = [cwd]
-group = []
-src += Glob('*.c')
-
-if rtconfig.PLATFORM != 'gcc':
-    group = DefineGroup('libc', src, depend = ['RT_USING_LIBC'], CPPPATH = CPPPATH)
-Return('group')
diff --git a/components/libc/compilers/common/excgcc/fcntl.h b/components/libc/compilers/common/excgcc/fcntl.h
deleted file mode 100644
index f247b926e9..0000000000
--- a/components/libc/compilers/common/excgcc/fcntl.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef FCNTL_H__
-#define FCNTL_H__
-
-#include <rtconfig.h>
-
-#ifdef RT_USING_DFS
-#include <dfs_posix.h>
-#endif
-
-#endif
diff --git a/components/libc/compilers/common/excgcc/readme.md b/components/libc/compilers/common/excgcc/readme.md
deleted file mode 100644
index b10940d003..0000000000
--- a/components/libc/compilers/common/excgcc/readme.md
+++ /dev/null
@@ -1,3 +0,0 @@
-## Attentions
-
-This folder is "common" for toolchains excluding gcc.
\ No newline at end of file
diff --git a/components/libc/compilers/common/excgcc/sys/stat.h b/components/libc/compilers/common/excgcc/sys/stat.h
deleted file mode 100644
index c4b42083c4..0000000000
--- a/components/libc/compilers/common/excgcc/sys/stat.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
diff --git a/components/libc/compilers/common/excgcc/sys/types.h b/components/libc/compilers/common/excgcc/sys/types.h
deleted file mode 100644
index 7222326a2a..0000000000
--- a/components/libc/compilers/common/excgcc/sys/types.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-05     Meco Man     fix bugs
- * 2020-12-16     Meco Man     add useconds_t
- */
-#ifndef __TYPES_H__
-#define __TYPES_H__
-
-#include <stdint.h>
-
-typedef int32_t          clockid_t;
-typedef int32_t          key_t;         /* Used for interprocess communication. */
-typedef int              pid_t;         /* Used for process IDs and process group IDs. */
-typedef unsigned short   uid_t;
-typedef unsigned short   gid_t;
-typedef signed long      off_t;
-typedef int              mode_t;
-#ifndef ARCH_CPU_64BIT
-typedef signed int       ssize_t;       /* Used for a count of bytes or an error indication. */
-#else
-typedef long signed int  ssize_t;       /* Used for a count of bytes or an error indication. */
-#endif
-typedef unsigned long    useconds_t;    /* microseconds (unsigned) */
-
-typedef unsigned long    dev_t;
-
-typedef unsigned int     u_int;
-typedef unsigned char    u_char;
-typedef unsigned long    u_long;
-
-#endif
diff --git a/components/libc/compilers/common/excgcc/sys/unistd.h b/components/libc/compilers/common/excgcc/sys/unistd.h
deleted file mode 100644
index 7752a1caf7..0000000000
--- a/components/libc/compilers/common/excgcc/sys/unistd.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-12-16     Meco Man     add usleep
- */
-#ifndef _SYS_UNISTD_H
-#define _SYS_UNISTD_H
-
-#include <rtconfig.h>
-#include "types.h"
-
-#ifdef RT_USING_DFS
-
-#define STDIN_FILENO    0       /* standard input file descriptor */
-#define STDOUT_FILENO   1       /* standard output file descriptor */
-#define STDERR_FILENO   2       /* standard error file descriptor */
-
-#include <dfs_posix.h>
-#else
-#define _FREAD      0x0001  /* read enabled */
-#define _FWRITE     0x0002  /* write enabled */
-#define _FAPPEND    0x0008  /* append (writes guaranteed at the end) */
-#define _FMARK      0x0010  /* internal; mark during gc() */
-#define _FDEFER     0x0020  /* internal; defer for next gc pass */
-#define _FASYNC     0x0040  /* signal pgrp when data ready */
-#define _FSHLOCK    0x0080  /* BSD flock() shared lock present */
-#define _FEXLOCK    0x0100  /* BSD flock() exclusive lock present */
-#define _FCREAT     0x0200  /* open with file create */
-#define _FTRUNC     0x0400  /* open with truncation */
-#define _FEXCL      0x0800  /* error on open if file exists */
-#define _FNBIO      0x1000  /* non blocking I/O (sys5 style) */
-#define _FSYNC      0x2000  /* do all writes synchronously */
-#define _FNONBLOCK  0x4000  /* non blocking I/O (POSIX style) */
-#define _FNDELAY    _FNONBLOCK  /* non blocking I/O (4.2 style) */
-#define _FNOCTTY    0x8000  /* don't assign a ctty on this open */
-
-
-#ifndef O_RDONLY
-#define O_RDONLY    0       /* +1 == FREAD */
-#endif
-#ifndef O_WRONLY
-#define O_WRONLY    1       /* +1 == FWRITE */
-#endif
-#ifndef O_RDWR
-#define O_RDWR      2       /* +1 == FREAD|FWRITE */
-#endif
-#ifndef O_APPEND
-#define O_APPEND    _FAPPEND
-#endif
-#ifndef O_CREAT
-#define O_CREAT     _FCREAT
-#endif
-#ifndef O_TRUNC
-#define O_TRUNC     _FTRUNC
-#endif
-#ifndef O_EXCL
-#define O_EXCL      _FEXCL
-#endif
-#ifndef O_SYNC
-#define O_SYNC      _FSYNC
-#endif
-
-#endif
-
-
-int     isatty      (int fd);
-char *  ttyname     (int desc);
-
-unsigned int sleep(unsigned int seconds);
-int usleep(useconds_t usec);
-
-pid_t getpid(void);
-pid_t getppid(void);
-uid_t getuid(void);
-uid_t geteuid(void);
-gid_t getgid(void);
-gid_t getegid(void);
-
-#endif /* _SYS_UNISTD_H */
diff --git a/components/libc/compilers/common/excgcc/unistd.h b/components/libc/compilers/common/excgcc/unistd.h
deleted file mode 100644
index cd77a12e3b..0000000000
--- a/components/libc/compilers/common/excgcc/unistd.h
+++ /dev/null
@@ -1,10 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#include "sys/unistd.h"
-
diff --git a/components/libc/compilers/common/none-gcc/SConscript b/components/libc/compilers/common/none-gcc/SConscript
new file mode 100644
index 0000000000..346e69b478
--- /dev/null
+++ b/components/libc/compilers/common/none-gcc/SConscript
@@ -0,0 +1,13 @@
+from building import *
+
+Import('rtconfig')
+
+src   = []
+cwd   = GetCurrentDir()
+CPPPATH = [cwd]
+group = []
+src += Glob('*.c')
+
+if rtconfig.PLATFORM != 'gcc':
+    group = DefineGroup('libc', src, depend = ['RT_USING_LIBC'], CPPPATH = CPPPATH)
+Return('group')
diff --git a/components/libc/compilers/common/none-gcc/fcntl.h b/components/libc/compilers/common/none-gcc/fcntl.h
new file mode 100644
index 0000000000..f247b926e9
--- /dev/null
+++ b/components/libc/compilers/common/none-gcc/fcntl.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef FCNTL_H__
+#define FCNTL_H__
+
+#include <rtconfig.h>
+
+#ifdef RT_USING_DFS
+#include <dfs_posix.h>
+#endif
+
+#endif
diff --git a/components/libc/compilers/common/none-gcc/readme.md b/components/libc/compilers/common/none-gcc/readme.md
new file mode 100644
index 0000000000..b10940d003
--- /dev/null
+++ b/components/libc/compilers/common/none-gcc/readme.md
@@ -0,0 +1,3 @@
+## Attentions
+
+This folder is "common" for toolchains excluding gcc.
\ No newline at end of file
diff --git a/components/libc/compilers/common/none-gcc/sys/stat.h b/components/libc/compilers/common/none-gcc/sys/stat.h
new file mode 100644
index 0000000000..c4b42083c4
--- /dev/null
+++ b/components/libc/compilers/common/none-gcc/sys/stat.h
@@ -0,0 +1,8 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
diff --git a/components/libc/compilers/common/none-gcc/sys/types.h b/components/libc/compilers/common/none-gcc/sys/types.h
new file mode 100644
index 0000000000..7222326a2a
--- /dev/null
+++ b/components/libc/compilers/common/none-gcc/sys/types.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-05     Meco Man     fix bugs
+ * 2020-12-16     Meco Man     add useconds_t
+ */
+#ifndef __TYPES_H__
+#define __TYPES_H__
+
+#include <stdint.h>
+
+typedef int32_t          clockid_t;
+typedef int32_t          key_t;         /* Used for interprocess communication. */
+typedef int              pid_t;         /* Used for process IDs and process group IDs. */
+typedef unsigned short   uid_t;
+typedef unsigned short   gid_t;
+typedef signed long      off_t;
+typedef int              mode_t;
+#ifndef ARCH_CPU_64BIT
+typedef signed int       ssize_t;       /* Used for a count of bytes or an error indication. */
+#else
+typedef long signed int  ssize_t;       /* Used for a count of bytes or an error indication. */
+#endif
+typedef unsigned long    useconds_t;    /* microseconds (unsigned) */
+
+typedef unsigned long    dev_t;
+
+typedef unsigned int     u_int;
+typedef unsigned char    u_char;
+typedef unsigned long    u_long;
+
+#endif
diff --git a/components/libc/compilers/common/none-gcc/sys/unistd.h b/components/libc/compilers/common/none-gcc/sys/unistd.h
new file mode 100644
index 0000000000..7752a1caf7
--- /dev/null
+++ b/components/libc/compilers/common/none-gcc/sys/unistd.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-12-16     Meco Man     add usleep
+ */
+#ifndef _SYS_UNISTD_H
+#define _SYS_UNISTD_H
+
+#include <rtconfig.h>
+#include "types.h"
+
+#ifdef RT_USING_DFS
+
+#define STDIN_FILENO    0       /* standard input file descriptor */
+#define STDOUT_FILENO   1       /* standard output file descriptor */
+#define STDERR_FILENO   2       /* standard error file descriptor */
+
+#include <dfs_posix.h>
+#else
+#define _FREAD      0x0001  /* read enabled */
+#define _FWRITE     0x0002  /* write enabled */
+#define _FAPPEND    0x0008  /* append (writes guaranteed at the end) */
+#define _FMARK      0x0010  /* internal; mark during gc() */
+#define _FDEFER     0x0020  /* internal; defer for next gc pass */
+#define _FASYNC     0x0040  /* signal pgrp when data ready */
+#define _FSHLOCK    0x0080  /* BSD flock() shared lock present */
+#define _FEXLOCK    0x0100  /* BSD flock() exclusive lock present */
+#define _FCREAT     0x0200  /* open with file create */
+#define _FTRUNC     0x0400  /* open with truncation */
+#define _FEXCL      0x0800  /* error on open if file exists */
+#define _FNBIO      0x1000  /* non blocking I/O (sys5 style) */
+#define _FSYNC      0x2000  /* do all writes synchronously */
+#define _FNONBLOCK  0x4000  /* non blocking I/O (POSIX style) */
+#define _FNDELAY    _FNONBLOCK  /* non blocking I/O (4.2 style) */
+#define _FNOCTTY    0x8000  /* don't assign a ctty on this open */
+
+
+#ifndef O_RDONLY
+#define O_RDONLY    0       /* +1 == FREAD */
+#endif
+#ifndef O_WRONLY
+#define O_WRONLY    1       /* +1 == FWRITE */
+#endif
+#ifndef O_RDWR
+#define O_RDWR      2       /* +1 == FREAD|FWRITE */
+#endif
+#ifndef O_APPEND
+#define O_APPEND    _FAPPEND
+#endif
+#ifndef O_CREAT
+#define O_CREAT     _FCREAT
+#endif
+#ifndef O_TRUNC
+#define O_TRUNC     _FTRUNC
+#endif
+#ifndef O_EXCL
+#define O_EXCL      _FEXCL
+#endif
+#ifndef O_SYNC
+#define O_SYNC      _FSYNC
+#endif
+
+#endif
+
+
+int     isatty      (int fd);
+char *  ttyname     (int desc);
+
+unsigned int sleep(unsigned int seconds);
+int usleep(useconds_t usec);
+
+pid_t getpid(void);
+pid_t getppid(void);
+uid_t getuid(void);
+uid_t geteuid(void);
+gid_t getgid(void);
+gid_t getegid(void);
+
+#endif /* _SYS_UNISTD_H */
diff --git a/components/libc/compilers/common/none-gcc/unistd.h b/components/libc/compilers/common/none-gcc/unistd.h
new file mode 100644
index 0000000000..cd77a12e3b
--- /dev/null
+++ b/components/libc/compilers/common/none-gcc/unistd.h
@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#include "sys/unistd.h"
+
diff --git a/components/libc/compilers/common/readme.md b/components/libc/compilers/common/readme.md
new file mode 100644
index 0000000000..856ddeb045
--- /dev/null
+++ b/components/libc/compilers/common/readme.md
@@ -0,0 +1,10 @@
+## Attentions
+
+1. This folder is "common" for all toolchains.
+
+2. If you want to add new `.c` files, please do not forget to fix SConscript file too. eg:
+
+```python
+if GetDepend('RT_USING_POSIX') == False:
+        SrcRemove(src, ['unistd.c'])
+```
\ No newline at end of file
diff --git a/components/libc/compilers/common/stdlib.c b/components/libc/compilers/common/stdlib.c
new file mode 100644
index 0000000000..9d8952e99e
--- /dev/null
+++ b/components/libc/compilers/common/stdlib.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-02-15     Meco Man     first version
+ */
+
+#include <rtthread.h>
+
+void __rt_libc_exit(int status)
+{
+    rt_thread_t self = rt_thread_self();
+
+    if (self != RT_NULL)
+    {
+        rt_kprintf("thread:%s exit:%d!\n", self->name, status);
+        rt_thread_control(self, RT_THREAD_CTRL_CLOSE, RT_NULL);
+    }
+}
+
+int __rt_libc_system(const char *string)
+{
+    /* TODO */
+    return 0;
+}
diff --git a/components/libc/compilers/common/sys/ioctl.h b/components/libc/compilers/common/sys/ioctl.h
new file mode 100644
index 0000000000..648d90230d
--- /dev/null
+++ b/components/libc/compilers/common/sys/ioctl.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-01     Meco Man     First Version
+ */
+#ifndef _SYS_IOCTL_H
+#define _SYS_IOCTL_H
+
+#include <rtconfig.h>
+#ifdef RT_USING_POSIX
+#include <dfs_posix.h>
+#endif
+
+#endif
diff --git a/components/libc/compilers/common/sys/mman.h b/components/libc/compilers/common/sys/mman.h
new file mode 100644
index 0000000000..a9235d61f0
--- /dev/null
+++ b/components/libc/compilers/common/sys/mman.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017/11/30     Bernard      The first version.
+ */
+
+#ifndef _SYS_MMAN_H
+#define _SYS_MMAN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <sys/types.h>
+    
+#define MAP_FAILED     ((void *) -1)
+
+#define MAP_SHARED     0x01
+#define MAP_PRIVATE    0x02
+#define MAP_TYPE       0x0f
+#define MAP_FIXED      0x10
+#define MAP_ANON       0x20
+#define MAP_ANONYMOUS  MAP_ANON
+#define MAP_NORESERVE  0x4000
+#define MAP_GROWSDOWN  0x0100
+#define MAP_DENYWRITE  0x0800
+#define MAP_EXECUTABLE 0x1000
+#define MAP_LOCKED     0x2000
+#define MAP_POPULATE   0x8000
+#define MAP_NONBLOCK   0x10000
+#define MAP_STACK      0x20000
+#define MAP_HUGETLB    0x40000
+#define MAP_FILE       0
+
+#define PROT_NONE      0
+#define PROT_READ      1
+#define PROT_WRITE     2
+#define PROT_EXEC      4
+#define PROT_GROWSDOWN 0x01000000
+#define PROT_GROWSUP   0x02000000
+
+#define MS_ASYNC       1
+#define MS_INVALIDATE  2
+#define MS_SYNC        4
+
+#define MCL_CURRENT    1
+#define MCL_FUTURE     2
+#define MCL_ONFAULT    4
+
+void *mmap (void *start, size_t len, int prot, int flags, int fd, off_t off);
+int munmap (void *start, size_t len);
+
+#ifdef __cplusplus
+}
+#endif
+#endif
diff --git a/components/libc/compilers/common/sys/statfs.h b/components/libc/compilers/common/sys/statfs.h
new file mode 100644
index 0000000000..0996af9a18
--- /dev/null
+++ b/components/libc/compilers/common/sys/statfs.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef __RTT_STATFS_H__
+#define __RTT_STATFS_H__
+
+#include <rtthread.h>
+
+struct statfs
+{
+    rt_size_t f_bsize;   /* block size */
+    rt_size_t f_blocks;  /* total data blocks in file system */
+    rt_size_t f_bfree;   /* free blocks in file system */
+};
+
+#endif
diff --git a/components/libc/compilers/common/sys/termios.h b/components/libc/compilers/common/sys/termios.h
new file mode 100644
index 0000000000..c4b42083c4
--- /dev/null
+++ b/components/libc/compilers/common/sys/termios.h
@@ -0,0 +1,8 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
new file mode 100644
index 0000000000..ef1c810608
--- /dev/null
+++ b/components/libc/compilers/common/sys/time.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-07     Meco Man     combine gcc armcc iccarm
+ * 2021-02-12     Meco Man     move all definitions located in <clock_time.h> to this file
+ */
+#ifndef _SYS_TIME_H_
+#define _SYS_TIME_H_
+
+#include <rtconfig.h>
+#include <time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Skip define timespec for IAR version over 8.10.1 where __VER__ is 8010001.
+ */
+#if defined ( __ICCARM__ ) && (__VER__ >= 8010001)
+#define _TIMESPEC_DEFINED
+#endif
+
+
+#ifndef _TIMEVAL_DEFINED
+#define _TIMEVAL_DEFINED
+/*
+ * Structure returned by gettimeofday(2) system call,
+ * and used in other calls.
+ */
+#if !(defined(_WIN32))
+struct timeval {
+    long    tv_sec;     /* seconds */
+    long    tv_usec;    /* and microseconds */
+};
+#endif
+#endif /* _TIMEVAL_DEFINED */
+
+#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && !defined (__ICCARM__) && !defined (_WIN32)
+struct timespec {
+    time_t  tv_sec;     /* seconds */
+    long    tv_nsec;    /* and nanoseconds */
+};
+#endif
+
+struct timezone {
+  int tz_minuteswest;   /* minutes west of Greenwich */
+  int tz_dsttime;       /* type of dst correction */
+};
+
+int stime(const time_t *t);
+time_t timegm(struct tm * const t);
+int gettimeofday(struct timeval *tv, struct timezone *tz);
+int settimeofday(const struct timeval *tv, const struct timezone *tz);
+#if defined(__ARMCC_VERSION) || defined (__ICCARM__)
+struct tm *gmtime_r(const time_t *timep, struct tm *r);
+#endif
+
+#ifdef RT_USING_POSIX
+#include <sys/types.h>
+/* posix clock and timer */
+#define MILLISECOND_PER_SECOND  1000UL
+#define MICROSECOND_PER_SECOND  1000000UL
+#define NANOSECOND_PER_SECOND   1000000000UL
+
+#define MILLISECOND_PER_TICK    (MILLISECOND_PER_SECOND / RT_TICK_PER_SECOND)
+#define MICROSECOND_PER_TICK    (MICROSECOND_PER_SECOND / RT_TICK_PER_SECOND)
+#define NANOSECOND_PER_TICK     (NANOSECOND_PER_SECOND  / RT_TICK_PER_SECOND)
+
+#ifndef CLOCK_REALTIME
+#define CLOCK_REALTIME      1
+#endif
+
+#define CLOCK_CPUTIME_ID    2
+
+#ifndef CLOCK_PROCESS_CPUTIME_ID
+#define CLOCK_PROCESS_CPUTIME_ID CLOCK_CPUTIME_ID
+#endif
+#ifndef CLOCK_THREAD_CPUTIME_ID
+#define CLOCK_THREAD_CPUTIME_ID  CLOCK_CPUTIME_ID
+#endif
+
+#ifndef CLOCK_MONOTONIC
+#define CLOCK_MONOTONIC     4
+#endif
+
+int clock_getres  (clockid_t clockid, struct timespec *res);
+int clock_gettime (clockid_t clockid, struct timespec *tp);
+int clock_settime (clockid_t clockid, const struct timespec *tp);
+int clock_time_to_tick(const struct timespec *time);
+#endif /* RT_USING_POSIX */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_TIME_H_ */
diff --git a/components/libc/compilers/common/termios.h b/components/libc/compilers/common/termios.h
new file mode 100644
index 0000000000..2960d52c58
--- /dev/null
+++ b/components/libc/compilers/common/termios.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+#ifndef _TERMIOS_H__
+#define _TERMIOS_H__
+
+#include <rtconfig.h>
+
+#ifdef RT_USING_POSIX_TERMIOS
+#include <sys/types.h>
+#include <posix_termios.h>
+#endif
+
+#endif
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
new file mode 100644
index 0000000000..33d8907165
--- /dev/null
+++ b/components/libc/compilers/common/time.c
@@ -0,0 +1,643 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2019-08-21     zhangjun     copy from minilibc
+ * 2020-09-07     Meco Man     combine gcc armcc iccarm
+ * 2021-02-05     Meco Man     add timegm()
+ * 2021-02-07     Meco Man     fixed gettimeofday()
+ * 2021-02-08     Meco Man     add settimeofday() stime()
+ * 2021-02-10     Meco Man     add ctime_r() and re-implement ctime()
+ * 2021-02-11     Meco Man     fix bug #3183 - align days[] and months[] to 4 bytes
+ * 2021-02-12     Meco Man     add errno
+ * 2012-12-08     Bernard      <clock_time.c> fix the issue of _timevalue.tv_usec initialization,
+ *                             which found by Rob <rdent@iinet.net.au>
+ * 2021-02-12     Meco Man     move all of the functions located in <clock_time.c> to this file
+ * 2021-03-15     Meco Man     fixed bug: https://club.rt-thread.org/ask/question/423650.html
+ */
+
+#include <sys/time.h>
+#include <rtthread.h>
+
+#ifdef RT_USING_DEVICE
+#include <rtdevice.h>
+#endif
+
+#define DBG_TAG    "TIME"
+#define DBG_LVL    DBG_INFO
+#include <rtdbg.h>
+
+/* seconds per day */
+#define SPD 24*60*60
+
+/* days per month -- nonleap! */
+static const short __spm[13] =
+{
+    0,
+    (31),
+    (31 + 28),
+    (31 + 28 + 31),
+    (31 + 28 + 31 + 30),
+    (31 + 28 + 31 + 30 + 31),
+    (31 + 28 + 31 + 30 + 31 + 30),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30),
+    (31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31),
+};
+
+ALIGN(4) static const char days[] = "Sun Mon Tue Wed Thu Fri Sat ";
+ALIGN(4) static const char months[] = "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ";
+
+static int __isleap(int year)
+{
+    /* every fourth year is a leap year except for century years that are
+     * not divisible by 400. */
+    /*  return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); */
+    return (!(year % 4) && ((year % 100) || !(year % 400)));
+}
+
+static void num2str(char *c, int i)
+{
+    c[0] = i / 10 + '0';
+    c[1] = i % 10 + '0';
+}
+
+/**
+ * Get time from RTC device (without timezone)
+ * @param tv: struct timeval
+ * @return -1 failure; 1 success
+ */
+static int get_timeval(struct timeval *tv)
+{
+#ifdef RT_USING_RTC
+    static rt_device_t device = RT_NULL;
+    rt_err_t rst = -RT_ERROR;
+
+    if (tv == RT_NULL)
+        return -1;
+
+    /* default is 0 */
+    tv->tv_sec = 0;
+    tv->tv_usec = 0;
+
+    /* optimization: find rtc device only first */
+    if (device == RT_NULL)
+    {
+        device = rt_device_find("rtc");
+    }
+
+    /* read timestamp from RTC device */
+    if (device != RT_NULL)
+    {
+        if (rt_device_open(device, 0) == RT_EOK)
+        {
+            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &tv->tv_sec);
+            rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME_US, &tv->tv_usec);
+            rt_device_close(device);
+        }
+    }
+    else
+    {
+        /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
+        rt_kprintf("Cannot find a RTC device to provide time!\r\n");
+        return -1;
+    }
+
+    return (rst < 0) ? -1 : 1;
+
+#else
+    /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
+    rt_kprintf("Cannot find a RTC device to provide time!\r\n");
+    return -1;
+#endif /* RT_USING_RTC */
+}
+
+/**
+ * Set time to RTC device (without timezone)
+ * @param tv: struct timeval
+ * @return -1 failure; 1 success
+ */
+static int set_timeval(struct timeval *tv)
+{
+#ifdef RT_USING_RTC
+    static rt_device_t device = RT_NULL;
+    rt_err_t rst = -RT_ERROR;
+
+    if (tv == RT_NULL)
+        return -1;
+
+    /* optimization: find rtc device only first */
+    if (device == RT_NULL)
+    {
+        device = rt_device_find("rtc");
+    }
+
+    /* read timestamp from RTC device */
+    if (device != RT_NULL)
+    {
+        if (rt_device_open(device, 0) == RT_EOK)
+        {
+            rst = rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &tv->tv_sec);
+            rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME_US, &tv->tv_usec);
+            rt_device_close(device);
+        }
+    }
+    else
+    {
+        LOG_W("Cannot find a RTC device to provide time!");
+        return -1;
+    }
+
+    return (rst < 0) ? -1 : 1;
+
+#else
+    LOG_W("Cannot find a RTC device to provide time!");
+    return -1;
+#endif /* RT_USING_RTC */
+}
+
+struct tm *gmtime_r(const time_t *timep, struct tm *r)
+{
+    time_t i;
+    register time_t work = *timep % (SPD);
+    r->tm_sec = work % 60;
+    work /= 60;
+    r->tm_min = work % 60;
+    r->tm_hour = work / 60;
+    work = *timep / (SPD);
+    r->tm_wday = (4 + work) % 7;
+    for (i = 1970;; ++i)
+    {
+        register time_t k = __isleap(i) ? 366 : 365;
+        if (work >= k)
+            work -= k;
+        else
+            break;
+    }
+    r->tm_year = i - 1900;
+    r->tm_yday = work;
+
+    r->tm_mday = 1;
+    if (__isleap(i) && (work > 58))
+    {
+        if (work == 59)
+            r->tm_mday = 2; /* 29.2. */
+        work -= 1;
+    }
+
+    for (i = 11; i && (__spm[i] > work); --i)
+        ;
+    r->tm_mon = i;
+    r->tm_mday += work - __spm[i];
+
+    r->tm_isdst = 0;
+    return r;
+}
+RTM_EXPORT(gmtime_r);
+
+struct tm* gmtime(const time_t* t)
+{
+    static struct tm tmp;
+    return gmtime_r(t, &tmp);
+}
+RTM_EXPORT(gmtime);
+
+/*TODO: timezone */
+struct tm* localtime_r(const time_t* t, struct tm* r)
+{
+    time_t local_tz;
+    int utc_plus;
+
+    utc_plus = 8; /* GMT: UTC+8 */
+    local_tz = *t + utc_plus * 3600;
+    return gmtime_r(&local_tz, r);
+}
+RTM_EXPORT(localtime_r);
+
+struct tm* localtime(const time_t* t)
+{
+    static struct tm tmp;
+    return localtime_r(t, &tmp);
+}
+RTM_EXPORT(localtime);
+
+/* TODO: timezone */
+time_t mktime(struct tm * const t)
+{
+    time_t timestamp;
+    int utc_plus;
+
+    utc_plus = 8; /* GMT: UTC+8 */
+    timestamp = timegm(t);
+    timestamp = timestamp - 3600 * utc_plus;
+    return timestamp;
+}
+RTM_EXPORT(mktime);
+
+char* asctime_r(const struct tm *t, char *buf)
+{
+    /* "Wed Jun 30 21:49:08 1993\n" */
+    *(int*) buf = *(int*) (days + (t->tm_wday << 2));
+    *(int*) (buf + 4) = *(int*) (months + (t->tm_mon << 2));
+    num2str(buf + 8, t->tm_mday);
+    if (buf[8] == '0')
+        buf[8] = ' ';
+    buf[10] = ' ';
+    num2str(buf + 11, t->tm_hour);
+    buf[13] = ':';
+    num2str(buf + 14, t->tm_min);
+    buf[16] = ':';
+    num2str(buf + 17, t->tm_sec);
+    buf[19] = ' ';
+    num2str(buf + 20, (t->tm_year + 1900) / 100);
+    num2str(buf + 22, (t->tm_year + 1900) % 100);
+    buf[24] = '\n';
+    buf[25] = '\0';
+    return buf;
+}
+RTM_EXPORT(asctime_r);
+
+char* asctime(const struct tm *timeptr)
+{
+    static char buf[26];
+    return asctime_r(timeptr, buf);
+}
+RTM_EXPORT(asctime);
+
+char *ctime_r (const time_t * tim_p, char * result)
+{
+    struct tm tm;
+    return asctime_r (localtime_r (tim_p, &tm), result);
+}
+RTM_EXPORT(ctime_r);
+
+char* ctime(const time_t *tim_p)
+{
+    return asctime (localtime (tim_p));
+}
+RTM_EXPORT(ctime);
+
+/**
+ * Returns the current time.
+ *
+ * @param time_t * t the timestamp pointer, if not used, keep NULL.
+ *
+ * @return The value ((time_t)-1) is returned if the calendar time is not available.
+ *         If timer is not a NULL pointer, the return value is also stored in timer.
+ *
+ */
+RT_WEAK time_t time(time_t *t)
+{
+    struct timeval now;
+
+    if(get_timeval(&now) > 0)
+    {
+        if (t)
+        {
+            *t = now.tv_sec;
+        }
+        return now.tv_sec;
+    }
+    else
+    {
+        errno = EFAULT;
+        return ((time_t)-1);
+    }
+}
+RTM_EXPORT(time);
+
+RT_WEAK clock_t clock(void)
+{
+    return rt_tick_get();
+}
+RTM_EXPORT(clock);
+
+int stime(const time_t *t)
+{
+    struct timeval tv;
+
+    if (!t)
+    {
+        errno = EFAULT;
+        return -1;
+    }
+
+    tv.tv_sec = *t;
+    if (set_timeval(&tv) > 0)
+    {
+        return 0;
+    }
+    else
+    {
+        errno = EFAULT;
+        return -1;
+    }
+}
+RTM_EXPORT(stime);
+
+time_t timegm(struct tm * const t)
+{
+    register time_t day;
+    register time_t i;
+    register time_t years = t->tm_year - 70;
+
+    if (t->tm_sec > 60)
+    {
+        t->tm_min += t->tm_sec / 60;
+        t->tm_sec %= 60;
+    }
+    if (t->tm_min > 60)
+    {
+        t->tm_hour += t->tm_min / 60;
+        t->tm_min %= 60;
+    }
+    if (t->tm_hour > 24)
+    {
+        t->tm_mday += t->tm_hour / 24;
+        t->tm_hour %= 24;
+    }
+    if (t->tm_mon > 12)
+    {
+        t->tm_year += t->tm_mon / 12;
+        t->tm_mon %= 12;
+    }
+    while (t->tm_mday > __spm[1 + t->tm_mon])
+    {
+        if (t->tm_mon == 1 && __isleap(t->tm_year + 1900))
+        {
+            --t->tm_mday;
+        }
+        t->tm_mday -= __spm[t->tm_mon];
+        ++t->tm_mon;
+        if (t->tm_mon > 11)
+        {
+            t->tm_mon = 0;
+            ++t->tm_year;
+        }
+    }
+
+    if (t->tm_year < 70)
+        return (time_t) - 1;
+
+    /* Days since 1970 is 365 * number of years + number of leap years since 1970 */
+    day = years * 365 + (years + 1) / 4;
+
+    /* After 2100 we have to substract 3 leap years for every 400 years
+     This is not intuitive. Most mktime implementations do not support
+     dates after 2059, anyway, so we might leave this out for it's
+     bloat. */
+    if (years >= 131)
+    {
+        years -= 131;
+        years /= 100;
+        day -= (years >> 2) * 3 + 1;
+        if ((years &= 3) == 3)
+            years--;
+        day -= years;
+    }
+
+    day += t->tm_yday = __spm[t->tm_mon] + t->tm_mday - 1 +
+                        (__isleap(t->tm_year + 1900) & (t->tm_mon > 1));
+
+    /* day is now the number of days since 'Jan 1 1970' */
+    i = 7;
+    t->tm_wday = (day + 4) % i; /* Sunday=0, Monday=1, ..., Saturday=6 */
+
+    i = 24;
+    day *= i;
+    i = 60;
+    return ((day + t->tm_hour) * i + t->tm_min) * i + t->tm_sec;
+}
+RTM_EXPORT(timegm);
+
+/* TODO: timezone */
+int gettimeofday(struct timeval *tv, struct timezone *tz)
+{
+    if (tv != RT_NULL && get_timeval(tv) > 0)
+    {
+        return 0;
+    }
+    else
+    {
+        errno = EFAULT;
+        return -1;
+    }
+}
+RTM_EXPORT(gettimeofday);
+
+/* TODO: timezone */
+int settimeofday(const struct timeval *tv, const struct timezone *tz)
+{
+    if (tv != RT_NULL)
+    {
+        if(tv->tv_sec >= 0 && tv->tv_usec >= 0)
+        {
+            if(set_timeval((struct timeval *)tv) > 0)
+            {
+                return 0;
+            }
+            else
+            {
+                errno = EFAULT;
+                return -1;
+            }
+        }
+        else
+        {
+            errno = EINVAL;
+            return -1;
+        }
+    }
+    else
+    {
+        errno = EFAULT;
+        return -1;
+    }
+}
+RTM_EXPORT(settimeofday);
+
+/* inherent in the toolchain */
+RTM_EXPORT(difftime);
+RTM_EXPORT(strftime);
+
+#ifdef RT_USING_POSIX
+static struct timeval _timevalue;
+static int clock_time_system_init()
+{
+    time_t time;
+    rt_tick_t tick;
+    rt_device_t device;
+
+    time = 0;
+    device = rt_device_find("rtc");
+    if (device != RT_NULL)
+    {
+        /* get realtime seconds */
+        rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time);
+    }
+
+    /* get tick */
+    tick = rt_tick_get();
+
+    _timevalue.tv_usec = (tick%RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
+    _timevalue.tv_sec = time - tick/RT_TICK_PER_SECOND - 1;
+
+    return 0;
+}
+INIT_COMPONENT_EXPORT(clock_time_system_init);
+
+int clock_getres(clockid_t clockid, struct timespec *res)
+{
+    int ret = 0;
+
+    if (res == RT_NULL)
+    {
+        rt_set_errno(EINVAL);
+        return -1;
+    }
+
+    switch (clockid)
+    {
+    case CLOCK_REALTIME:
+        res->tv_sec = 0;
+        res->tv_nsec = NANOSECOND_PER_SECOND/RT_TICK_PER_SECOND;
+        break;
+
+#ifdef RT_USING_CPUTIME
+    case CLOCK_CPUTIME_ID:
+        res->tv_sec  = 0;
+        res->tv_nsec = clock_cpu_getres();
+        break;
+#endif
+
+    default:
+        ret = -1;
+        rt_set_errno(EINVAL);
+        break;
+    }
+
+    return ret;
+}
+RTM_EXPORT(clock_getres);
+
+int clock_gettime(clockid_t clockid, struct timespec *tp)
+{
+    int ret = 0;
+
+    if (tp == RT_NULL)
+    {
+        rt_set_errno(EINVAL);
+        return -1;
+    }
+
+    switch (clockid)
+    {
+    case CLOCK_REALTIME:
+        {
+            /* get tick */
+            int tick = rt_tick_get();
+
+            tp->tv_sec  = _timevalue.tv_sec + tick / RT_TICK_PER_SECOND;
+            tp->tv_nsec = (_timevalue.tv_usec + (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK) * 1000;
+        }
+        break;
+
+#ifdef RT_USING_CPUTIME
+    case CLOCK_CPUTIME_ID:
+        {
+            float unit = 0;
+            long long cpu_tick;
+
+            unit = clock_cpu_getres();
+            cpu_tick = clock_cpu_gettime();
+
+            tp->tv_sec  = ((int)(cpu_tick * unit)) / NANOSECOND_PER_SECOND;
+            tp->tv_nsec = ((int)(cpu_tick * unit)) % NANOSECOND_PER_SECOND;
+        }
+        break;
+#endif
+    default:
+        rt_set_errno(EINVAL);
+        ret = -1;
+    }
+
+    return ret;
+}
+RTM_EXPORT(clock_gettime);
+
+int clock_settime(clockid_t clockid, const struct timespec *tp)
+{
+    int second;
+    rt_tick_t tick;
+    rt_device_t device;
+
+    if ((clockid != CLOCK_REALTIME) || (tp == RT_NULL))
+    {
+        rt_set_errno(EINVAL);
+
+        return -1;
+    }
+
+    /* get second */
+    second = tp->tv_sec;
+    /* get tick */
+    tick = rt_tick_get();
+
+    /* update timevalue */
+    _timevalue.tv_usec = MICROSECOND_PER_SECOND - (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
+    _timevalue.tv_sec = second - tick/RT_TICK_PER_SECOND - 1;
+
+    /* update for RTC device */
+    device = rt_device_find("rtc");
+    if (device != RT_NULL)
+    {
+        /* set realtime seconds */
+        rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &second);
+    }
+    else
+        return -1;
+
+    return 0;
+}
+RTM_EXPORT(clock_settime);
+
+int clock_time_to_tick(const struct timespec *time)
+{
+    int tick;
+    int nsecond, second;
+    struct timespec tp;
+
+    RT_ASSERT(time != RT_NULL);
+
+    tick = RT_WAITING_FOREVER;
+    if (time != NULL)
+    {
+        /* get current tp */
+        clock_gettime(CLOCK_REALTIME, &tp);
+
+        if ((time->tv_nsec - tp.tv_nsec) < 0)
+        {
+            nsecond = NANOSECOND_PER_SECOND - (tp.tv_nsec - time->tv_nsec);
+            second  = time->tv_sec - tp.tv_sec - 1;
+        }
+        else
+        {
+            nsecond = time->tv_nsec - tp.tv_nsec;
+            second  = time->tv_sec - tp.tv_sec;
+        }
+
+        tick = second * RT_TICK_PER_SECOND + nsecond * RT_TICK_PER_SECOND / NANOSECOND_PER_SECOND;
+        if (tick < 0) tick = 0;
+    }
+
+    return tick;
+}
+RTM_EXPORT(clock_time_to_tick);
+
+#endif /* RT_USING_POSIX */
diff --git a/components/libc/compilers/common/unistd.c b/components/libc/compilers/common/unistd.c
new file mode 100644
index 0000000000..20130cbb8a
--- /dev/null
+++ b/components/libc/compilers/common/unistd.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-09-01     Meco Man     first Version
+ * 2021-02-12     Meco Man     move all functions located in <pthread_sleep.c> to this file
+ */
+
+#include <unistd.h>
+#include <rtthread.h>
+#include <rthw.h>
+
+#ifdef RT_USING_POSIX_TERMIOS
+#include "termios.h"
+
+int isatty(int fd)
+{
+    struct termios ts;
+    return(tcgetattr(fd,&ts) != -1);/*true if no error (is a tty)*/
+}
+RTM_EXPORT(isatty);
+#endif
+
+char *ttyname(int fd)
+{
+    return "/dev/tty0"; /*TODO: need to add more specific*/
+}
+RTM_EXPORT(ttyname);
+
+unsigned int sleep(unsigned int seconds)
+{
+    rt_tick_t delta_tick;
+
+    delta_tick = rt_tick_get();
+    rt_thread_delay(seconds * RT_TICK_PER_SECOND);
+    delta_tick = rt_tick_get() - delta_tick;
+
+    return seconds - delta_tick/RT_TICK_PER_SECOND;
+}
+RTM_EXPORT(sleep);
+
+int usleep(useconds_t usec)
+{
+    rt_thread_mdelay(usec / 1000u);
+    rt_hw_us_delay(usec % 1000u);
+    return 0;
+}
+RTM_EXPORT(usleep);
+
+pid_t getpid(void)
+{
+    /*TODO*/
+    return 0;
+}
+RTM_EXPORT(getpid);
+
+pid_t getppid(void)
+{
+    return 0;
+}
+RTM_EXPORT(getppid);
+
+uid_t getuid(void)
+{
+    return 0; /*ROOT*/
+}
+RTM_EXPORT(getuid);
+
+uid_t geteuid(void)
+{
+    return 0; /*ROOT*/
+}
+RTM_EXPORT(geteuid);
+
+gid_t getgid(void)
+{
+    return 0; /*ROOT*/
+}
+RTM_EXPORT(getgid);
+
+gid_t getegid(void)
+{
+    return 0; /*ROOT*/
+}
+RTM_EXPORT(getegid);
-- 
cgit v1.3.1


From ae66d8262499c30e2f9617a101fc200b7e4814cb Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 25 Apr 2021 21:32:08 +0800
Subject: update sconscript

---
 components/libc/compilers/common/SConscript | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/SConscript b/components/libc/compilers/common/SConscript
index 319e1a3555..d9de1cf17f 100644
--- a/components/libc/compilers/common/SConscript
+++ b/components/libc/compilers/common/SConscript
@@ -23,5 +23,9 @@ else:
 
 if GetDepend('RT_USING_LIBC') or GetDepend('RT_LIBC_USING_TIME'):
     group = DefineGroup('libc', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
-
+    list = os.listdir(cwd)
+    for d in list:
+        path = os.path.join(cwd, d)
+        if os.path.isfile(os.path.join(path, 'SConscript')):
+            group = group + SConscript(os.path.join(d, 'SConscript'))
 Return('group')
-- 
cgit v1.3.1


From 19347ed454621161caf4186f1a52ec656c3dc58f Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Mon, 26 Apr 2021 14:31:31 +0800
Subject: [libc][unistd] 完善isatty()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/unistd.c   | 26 +++++++++++++++++++++-----
 components/libc/compilers/newlib/syscalls.c |  1 +
 2 files changed, 22 insertions(+), 5 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/unistd.c b/components/libc/compilers/common/unistd.c
index 20130cbb8a..6c81fc7662 100644
--- a/components/libc/compilers/common/unistd.c
+++ b/components/libc/compilers/common/unistd.c
@@ -15,18 +15,29 @@
 
 #ifdef RT_USING_POSIX_TERMIOS
 #include "termios.h"
-
 int isatty(int fd)
 {
     struct termios ts;
-    return(tcgetattr(fd,&ts) != -1);/*true if no error (is a tty)*/
+    return(tcgetattr(fd, &ts) != -1); /*true if no error (is a tty)*/
+}
+#else
+int isatty(int fd)
+{
+    if (fd >=0 && fd < 3)
+    {
+        return 1;
+    }
+    else
+    {
+        return 0;
+    }
 }
-RTM_EXPORT(isatty);
 #endif
+RTM_EXPORT(isatty);
 
 char *ttyname(int fd)
 {
-    return "/dev/tty0"; /*TODO: need to add more specific*/
+    return "/dev/tty"; /*TODO: need to add more specific*/
 }
 RTM_EXPORT(ttyname);
 
@@ -50,11 +61,16 @@ int usleep(useconds_t usec)
 }
 RTM_EXPORT(usleep);
 
-pid_t getpid(void)
+pid_t gettid(void)
 {
     /*TODO*/
     return 0;
 }
+
+pid_t getpid(void)
+{
+    return gettid();
+}
 RTM_EXPORT(getpid);
 
 pid_t getppid(void)
diff --git a/components/libc/compilers/newlib/syscalls.c b/components/libc/compilers/newlib/syscalls.c
index 6cbc11fd6a..7c5d51eca6 100644
--- a/components/libc/compilers/newlib/syscalls.c
+++ b/components/libc/compilers/newlib/syscalls.c
@@ -98,6 +98,7 @@ _isatty_r(struct _reent *ptr, int fd)
         return 0;
     }
 }
+
 int
 _kill_r(struct _reent *ptr, int pid, int sig)
 {
-- 
cgit v1.3.1


From cb7fa8fceaf5b9e2aacaee132ce5bb0ad49c92aa Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Mon, 26 Apr 2021 14:34:26 +0800
Subject: implement pid_t gettid(void)

---
 components/libc/compilers/common/none-gcc/sys/unistd.h | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/none-gcc/sys/unistd.h b/components/libc/compilers/common/none-gcc/sys/unistd.h
index 7752a1caf7..2f01f660b3 100644
--- a/components/libc/compilers/common/none-gcc/sys/unistd.h
+++ b/components/libc/compilers/common/none-gcc/sys/unistd.h
@@ -66,13 +66,11 @@
 
 #endif
 
-
 int     isatty      (int fd);
 char *  ttyname     (int desc);
-
 unsigned int sleep(unsigned int seconds);
 int usleep(useconds_t usec);
-
+pid_t gettid(void);
 pid_t getpid(void);
 pid_t getppid(void);
 uid_t getuid(void);
-- 
cgit v1.3.1


From 850e1aeb5264818c133a32ff457794ff9bd9364d Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Wed, 28 Apr 2021 13:03:43 +0800
Subject: [libc][time] 细微调整time.c
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c     | 10 +++++-----
 components/libc/compilers/newlib/SConscript |  9 ++++-----
 2 files changed, 9 insertions(+), 10 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 33d8907165..5f4af8e572 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -16,7 +16,7 @@
  * 2012-12-08     Bernard      <clock_time.c> fix the issue of _timevalue.tv_usec initialization,
  *                             which found by Rob <rdent@iinet.net.au>
  * 2021-02-12     Meco Man     move all of the functions located in <clock_time.c> to this file
- * 2021-03-15     Meco Man     fixed bug: https://club.rt-thread.org/ask/question/423650.html
+ * 2021-03-15     Meco Man     fixed a bug of leaking memory in asctime()
  */
 
 #include <sys/time.h>
@@ -104,7 +104,7 @@ static int get_timeval(struct timeval *tv)
     }
     else
     {
-        /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
+        /* LOG_W will cause a recursive printing if ulog timestamp function is enabled */
         rt_kprintf("Cannot find a RTC device to provide time!\r\n");
         return -1;
     }
@@ -112,7 +112,7 @@ static int get_timeval(struct timeval *tv)
     return (rst < 0) ? -1 : 1;
 
 #else
-    /* LOG_W will cause a recursive printing if ulog timestamp function is turned on */
+    /* LOG_W will cause a recursive printing if ulog timestamp function is enabled */
     rt_kprintf("Cannot find a RTC device to provide time!\r\n");
     return -1;
 #endif /* RT_USING_RTC */
@@ -273,13 +273,13 @@ RTM_EXPORT(asctime);
 char *ctime_r (const time_t * tim_p, char * result)
 {
     struct tm tm;
-    return asctime_r (localtime_r (tim_p, &tm), result);
+    return asctime_r(localtime_r(tim_p, &tm), result);
 }
 RTM_EXPORT(ctime_r);
 
 char* ctime(const time_t *tim_p)
 {
-    return asctime (localtime (tim_p));
+    return asctime(localtime(tim_p));
 }
 RTM_EXPORT(ctime);
 
diff --git a/components/libc/compilers/newlib/SConscript b/components/libc/compilers/newlib/SConscript
index b1ad6e4784..542cdecd40 100644
--- a/components/libc/compilers/newlib/SConscript
+++ b/components/libc/compilers/newlib/SConscript
@@ -4,17 +4,18 @@ Import('rtconfig')
 src = []
 cwd = GetCurrentDir()
 group = []
-
+LIBS = []
+CPPDEFINES = []
 CPPPATH = [cwd]
 
 if rtconfig.PLATFORM == 'gcc':
     if GetDepend('RT_USING_LIBC'):
-        CPPDEFINES = ['RT_USING_NEWLIB']
+        CPPDEFINES += ['RT_USING_NEWLIB']
         # link with libc and libm:
         # libm is a frequently used lib. Newlib is compiled with -ffunction-sections in
         # recent GCC tool chains. The linker would just link in the functions that have
         # been referenced. So setting this won't result in bigger text size.
-        LIBS = ['c', 'm']
+        LIBS += ['c', 'm']
 
         src += Glob('*.c')
         SrcRemove(src, ['minilib.c'])
@@ -22,8 +23,6 @@ if rtconfig.PLATFORM == 'gcc':
             SrcRemove(src, ['libc_syms.c'])
     else:
         src += ['minilib.c']
-        CPPDEFINES = []
-        LIBS = []
 
     group = DefineGroup('libc', src, depend = [], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES, LIBS = LIBS)
 
-- 
cgit v1.3.1


From 82f2d8e53d866598b993054990b73339ef457607 Mon Sep 17 00:00:00 2001
From: Meco Jianting Man <920369182@qq.com>
Date: Thu, 29 Apr 2021 00:21:10 +0800
Subject: time.c 删除函数名与括号之间的空格
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 5f4af8e572..72542867d2 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -270,7 +270,7 @@ char* asctime(const struct tm *timeptr)
 }
 RTM_EXPORT(asctime);
 
-char *ctime_r (const time_t * tim_p, char * result)
+char *ctime_r(const time_t * tim_p, char * result)
 {
     struct tm tm;
     return asctime_r(localtime_r(tim_p, &tm), result);
-- 
cgit v1.3.1


From 1627597fcc89a7d9babc972b5d1d46764ffc7ef8 Mon Sep 17 00:00:00 2001
From: Meco Jianting Man <920369182@qq.com>
Date: Thu, 29 Apr 2021 04:42:11 +0800
Subject: remove _TIMESPEC_DEFINED

---
 components/libc/compilers/common/sys/time.h | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
index ef1c810608..24da0b6c77 100644
--- a/components/libc/compilers/common/sys/time.h
+++ b/components/libc/compilers/common/sys/time.h
@@ -18,14 +18,6 @@
 extern "C" {
 #endif
 
-/*
- * Skip define timespec for IAR version over 8.10.1 where __VER__ is 8010001.
- */
-#if defined ( __ICCARM__ ) && (__VER__ >= 8010001)
-#define _TIMESPEC_DEFINED
-#endif
-
-
 #ifndef _TIMEVAL_DEFINED
 #define _TIMEVAL_DEFINED
 /*
@@ -40,7 +32,7 @@ struct timeval {
 #endif
 #endif /* _TIMEVAL_DEFINED */
 
-#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && !defined (__ICCARM__) && !defined (_WIN32)
+#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && !(defined(__ICCARM__) && (__VER__ >= 8010001)) && !defined(_WIN32)
 struct timespec {
     time_t  tv_sec;     /* seconds */
     long    tv_nsec;    /* and nanoseconds */
-- 
cgit v1.3.1


From a7a3ca9f0290131842f1a40bb8dca1a9490e4d27 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 1 May 2021 05:51:18 +0800
Subject: 增加手动设置时区的功能
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/Kconfig                 | 8 +++++++-
 components/libc/compilers/common/time.c | 4 ++--
 2 files changed, 9 insertions(+), 3 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/Kconfig b/components/libc/Kconfig
index 49b97481d1..8a790c298d 100644
--- a/components/libc/Kconfig
+++ b/components/libc/Kconfig
@@ -55,8 +55,14 @@ endif
 
 if RT_USING_LIBC != y
     config RT_LIBC_USING_TIME
-    bool "Enable TIME FUNCTIONS WITHOUT COMPILER'S LIBC"
+    bool "Enable time functions without compiler's libc"
     default y
 endif
 
+config RT_LIBC_FIXED_TIMEZONE
+    depends on (RT_LIBC_USING_TIME || RT_USING_LIBC)
+    int "Manually set a fixed time zone (UTC+)"
+    range -12 12
+    default 8
+
 endmenu
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 33d8907165..8dda257937 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -214,7 +214,7 @@ struct tm* localtime_r(const time_t* t, struct tm* r)
     time_t local_tz;
     int utc_plus;
 
-    utc_plus = 8; /* GMT: UTC+8 */
+    utc_plus = RT_LIBC_FIXED_TIMEZONE;
     local_tz = *t + utc_plus * 3600;
     return gmtime_r(&local_tz, r);
 }
@@ -233,7 +233,7 @@ time_t mktime(struct tm * const t)
     time_t timestamp;
     int utc_plus;
 
-    utc_plus = 8; /* GMT: UTC+8 */
+    utc_plus = RT_LIBC_FIXED_TIMEZONE;
     timestamp = timegm(t);
     timestamp = timestamp - 3600 * utc_plus;
     return timestamp;
-- 
cgit v1.3.1


From 0aa3b80fc3509a2377d727e76fd9393f4b4962d8 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 1 May 2021 06:03:46 +0800
Subject: 
 在time.c中增加RT_LIBC_FIXED_TIMEZONE默认值，防止有些工程没有配置RT_LIBC_FIXED_TIMEZONE
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 8dda257937..3e23fc8242 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -30,6 +30,10 @@
 #define DBG_LVL    DBG_INFO
 #include <rtdbg.h>
 
+#ifndef RT_LIBC_FIXED_TIMEZONE
+#define RT_LIBC_FIXED_TIMEZONE 8
+#endif
+
 /* seconds per day */
 #define SPD 24*60*60
 
-- 
cgit v1.3.1


From 65984a7116e747e022083774852f3a90617ca4e1 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 1 May 2021 06:06:03 +0800
Subject: add comment

---
 components/libc/compilers/common/time.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 3e23fc8242..f7f52be9b4 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -31,7 +31,7 @@
 #include <rtdbg.h>
 
 #ifndef RT_LIBC_FIXED_TIMEZONE
-#define RT_LIBC_FIXED_TIMEZONE 8
+#define RT_LIBC_FIXED_TIMEZONE 8 /* UTC+8 */
 #endif
 
 /* seconds per day */
-- 
cgit v1.3.1


From a611a6686402bd074cbaf53c53356c381ab54a5f Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 1 May 2021 06:08:14 +0800
Subject: 精简代码
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index f7f52be9b4..799f71a2d0 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -212,14 +212,11 @@ struct tm* gmtime(const time_t* t)
 }
 RTM_EXPORT(gmtime);
 
-/*TODO: timezone */
 struct tm* localtime_r(const time_t* t, struct tm* r)
 {
     time_t local_tz;
-    int utc_plus;
 
-    utc_plus = RT_LIBC_FIXED_TIMEZONE;
-    local_tz = *t + utc_plus * 3600;
+    local_tz = *t + RT_LIBC_FIXED_TIMEZONE * 3600;
     return gmtime_r(&local_tz, r);
 }
 RTM_EXPORT(localtime_r);
@@ -231,15 +228,12 @@ struct tm* localtime(const time_t* t)
 }
 RTM_EXPORT(localtime);
 
-/* TODO: timezone */
 time_t mktime(struct tm * const t)
 {
     time_t timestamp;
-    int utc_plus;
 
-    utc_plus = RT_LIBC_FIXED_TIMEZONE;
     timestamp = timegm(t);
-    timestamp = timestamp - 3600 * utc_plus;
+    timestamp = timestamp - 3600 * RT_LIBC_FIXED_TIMEZONE;
     return timestamp;
 }
 RTM_EXPORT(mktime);
-- 
cgit v1.3.1


From f4015029d2f4682783fb26e9aa31588de4377783 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 1 May 2021 14:18:46 +0800
Subject: gettimeofday()函数支持时区；规范set_timeval/get_timeval函数返回值
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c | 57 ++++++++++++++++++---------------
 1 file changed, 32 insertions(+), 25 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index deda18a560..6a2b5620ad 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -17,6 +17,7 @@
  *                             which found by Rob <rdent@iinet.net.au>
  * 2021-02-12     Meco Man     move all of the functions located in <clock_time.c> to this file
  * 2021-03-15     Meco Man     fixed a bug of leaking memory in asctime()
+ * 2021-05-01     Meco Man     support fixed timezone
  */
 
 #include <sys/time.h>
@@ -73,18 +74,18 @@ static void num2str(char *c, int i)
 }
 
 /**
- * Get time from RTC device (without timezone)
+ * Get time from RTC device (without timezone, UTC+0)
  * @param tv: struct timeval
- * @return -1 failure; 1 success
+ * @return the operation status, RT_EOK on successful
  */
-static int get_timeval(struct timeval *tv)
+static rt_err_t get_timeval(struct timeval *tv)
 {
 #ifdef RT_USING_RTC
     static rt_device_t device = RT_NULL;
     rt_err_t rst = -RT_ERROR;
 
     if (tv == RT_NULL)
-        return -1;
+        return -RT_EINVAL;
 
     /* default is 0 */
     tv->tv_sec = 0;
@@ -110,22 +111,22 @@ static int get_timeval(struct timeval *tv)
     {
         /* LOG_W will cause a recursive printing if ulog timestamp function is enabled */
         rt_kprintf("Cannot find a RTC device to provide time!\r\n");
-        return -1;
+        return -RT_ENOSYS;
     }
 
-    return (rst < 0) ? -1 : 1;
+    return rst;
 
 #else
     /* LOG_W will cause a recursive printing if ulog timestamp function is enabled */
     rt_kprintf("Cannot find a RTC device to provide time!\r\n");
-    return -1;
+    return -RT_ENOSYS;
 #endif /* RT_USING_RTC */
 }
 
 /**
  * Set time to RTC device (without timezone)
  * @param tv: struct timeval
- * @return -1 failure; 1 success
+ * @return the operation status, RT_EOK on successful
  */
 static int set_timeval(struct timeval *tv)
 {
@@ -134,7 +135,7 @@ static int set_timeval(struct timeval *tv)
     rt_err_t rst = -RT_ERROR;
 
     if (tv == RT_NULL)
-        return -1;
+        return -RT_EINVAL;
 
     /* optimization: find rtc device only first */
     if (device == RT_NULL)
@@ -155,14 +156,14 @@ static int set_timeval(struct timeval *tv)
     else
     {
         LOG_W("Cannot find a RTC device to provide time!");
-        return -1;
+        return -RT_ENOSYS;
     }
 
-    return (rst < 0) ? -1 : 1;
+    return rst;
 
 #else
     LOG_W("Cannot find a RTC device to provide time!");
-    return -1;
+    return -RT_ENOSYS;
 #endif /* RT_USING_RTC */
 }
 
@@ -294,7 +295,7 @@ RT_WEAK time_t time(time_t *t)
 {
     struct timeval now;
 
-    if(get_timeval(&now) > 0)
+    if(get_timeval(&now) == RT_EOK)
     {
         if (t)
         {
@@ -304,7 +305,7 @@ RT_WEAK time_t time(time_t *t)
     }
     else
     {
-        errno = EFAULT;
+        rt_set_errno(EFAULT);
         return ((time_t)-1);
     }
 }
@@ -322,18 +323,18 @@ int stime(const time_t *t)
 
     if (!t)
     {
-        errno = EFAULT;
+        rt_set_errno(EFAULT);
         return -1;
     }
 
     tv.tv_sec = *t;
-    if (set_timeval(&tv) > 0)
+    if (set_timeval(&tv) == RT_EOK)
     {
         return 0;
     }
     else
     {
-        errno = EFAULT;
+        rt_set_errno(EFAULT);
         return -1;
     }
 }
@@ -414,47 +415,53 @@ time_t timegm(struct tm * const t)
 }
 RTM_EXPORT(timegm);
 
-/* TODO: timezone */
+/* TODO: Daylight Saving Time */
 int gettimeofday(struct timeval *tv, struct timezone *tz)
 {
-    if (tv != RT_NULL && get_timeval(tv) > 0)
+    if(tz != RT_NULL)
+    {
+        tz->tz_dsttime = 0;
+        tz->tz_minuteswest = -(RT_LIBC_FIXED_TIMEZONE * 60);
+    }
+
+    if (tv != RT_NULL && get_timeval(tv) == RT_EOK)
     {
         return 0;
     }
     else
     {
-        errno = EFAULT;
+        rt_set_errno(EFAULT);
         return -1;
     }
 }
 RTM_EXPORT(gettimeofday);
 
-/* TODO: timezone */
+/* TODO: Daylight Saving Time */
 int settimeofday(const struct timeval *tv, const struct timezone *tz)
 {
     if (tv != RT_NULL)
     {
         if(tv->tv_sec >= 0 && tv->tv_usec >= 0)
         {
-            if(set_timeval((struct timeval *)tv) > 0)
+            if(set_timeval((struct timeval *)tv) == RT_EOK)
             {
                 return 0;
             }
             else
             {
-                errno = EFAULT;
+                rt_set_errno(EFAULT);
                 return -1;
             }
         }
         else
         {
-            errno = EINVAL;
+            rt_set_errno(EINVAL);
             return -1;
         }
     }
     else
     {
-        errno = EFAULT;
+        rt_set_errno(EFAULT);
         return -1;
     }
 }
-- 
cgit v1.3.1


From 6fa385b98743c78b61a72fa5d4ff8ea7be4a31fd Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 1 May 2021 14:23:50 +0800
Subject: [time] 补充注释
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 6a2b5620ad..388dc52ac3 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -124,11 +124,11 @@ static rt_err_t get_timeval(struct timeval *tv)
 }
 
 /**
- * Set time to RTC device (without timezone)
+ * Set time to RTC device (without timezone, UTC+0)
  * @param tv: struct timeval
  * @return the operation status, RT_EOK on successful
  */
-static int set_timeval(struct timeval *tv)
+static rt_err_t set_timeval(struct timeval *tv)
 {
 #ifdef RT_USING_RTC
     static rt_device_t device = RT_NULL;
-- 
cgit v1.3.1


From 47de5265250f76ed1f48f7d1c51beda690a4bd74 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 1 May 2021 16:21:52 +0800
Subject: 精简settimeofday代码；
 在Linux中settimeofday以及gettimeofday函数的时区功能已经被废弃，因此增加注释予以提示。
 gettimeofday实现了tz_minuteswest功能，tz_dsttime功能未实现，按废弃处理；
 settimeofday时区功能废弃。
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c | 41 +++++++++++++++------------------
 1 file changed, 18 insertions(+), 23 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 388dc52ac3..50fbe0d5cc 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -124,11 +124,11 @@ static rt_err_t get_timeval(struct timeval *tv)
 }
 
 /**
- * Set time to RTC device (without timezone, UTC+0)
+ * Set time to RTC device (without timezone)
  * @param tv: struct timeval
  * @return the operation status, RT_EOK on successful
  */
-static rt_err_t set_timeval(struct timeval *tv)
+static int set_timeval(const struct timeval *tv)
 {
 #ifdef RT_USING_RTC
     static rt_device_t device = RT_NULL;
@@ -415,9 +415,13 @@ time_t timegm(struct tm * const t)
 }
 RTM_EXPORT(timegm);
 
-/* TODO: Daylight Saving Time */
 int gettimeofday(struct timeval *tv, struct timezone *tz)
 {
+    /* The use of the timezone structure is obsolete;
+     * the tz argument should normally be specified as NULL.
+     * The tz_dsttime field has never been used under Linux.
+     * Thus, the following is purely of historic interest.
+     */
     if(tz != RT_NULL)
     {
         tz->tz_dsttime = 0;
@@ -436,32 +440,23 @@ int gettimeofday(struct timeval *tv, struct timezone *tz)
 }
 RTM_EXPORT(gettimeofday);
 
-/* TODO: Daylight Saving Time */
 int settimeofday(const struct timeval *tv, const struct timezone *tz)
 {
-    if (tv != RT_NULL)
+    /* The use of the timezone structure is obsolete;
+     * the tz argument should normally be specified as NULL.
+     * The tz_dsttime field has never been used under Linux.
+     * Thus, the following is purely of historic interest.
+     */
+    if (tv != RT_NULL
+        && tv->tv_sec >= 0
+        && tv->tv_usec >= 0
+        && set_timeval(tv) == RT_EOK)
     {
-        if(tv->tv_sec >= 0 && tv->tv_usec >= 0)
-        {
-            if(set_timeval((struct timeval *)tv) == RT_EOK)
-            {
-                return 0;
-            }
-            else
-            {
-                rt_set_errno(EFAULT);
-                return -1;
-            }
-        }
-        else
-        {
-            rt_set_errno(EINVAL);
-            return -1;
-        }
+        return 0;
     }
     else
     {
-        rt_set_errno(EFAULT);
+        rt_set_errno(EINVAL);
         return -1;
     }
 }
-- 
cgit v1.3.1


From 8ec1a63b2347ce70e9d4bbd6693fd3e73c41be65 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 2 May 2021 09:24:41 +0800
Subject: 增加tz_dsttime类型定义
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/sys/mman.h |  2 +-
 components/libc/compilers/common/sys/time.h | 13 +++++++++++++
 components/libc/compilers/common/time.c     |  2 +-
 3 files changed, 15 insertions(+), 2 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/sys/mman.h b/components/libc/compilers/common/sys/mman.h
index a9235d61f0..2da2ddf716 100644
--- a/components/libc/compilers/common/sys/mman.h
+++ b/components/libc/compilers/common/sys/mman.h
@@ -16,7 +16,7 @@ extern "C" {
 #endif
 
 #include <sys/types.h>
-    
+
 #define MAP_FAILED     ((void *) -1)
 
 #define MAP_SHARED     0x01
diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
index 24da0b6c77..be453ba276 100644
--- a/components/libc/compilers/common/sys/time.h
+++ b/components/libc/compilers/common/sys/time.h
@@ -20,6 +20,19 @@ extern "C" {
 
 #ifndef _TIMEVAL_DEFINED
 #define _TIMEVAL_DEFINED
+
+#define DST_NONE    0   /* not on dst */
+#define DST_USA     1   /* USA style dst */
+#define DST_AUST    2   /* Australian style dst */
+#define DST_WET     3   /* Western European dst */
+#define DST_MET     4   /* Middle European dst */
+#define DST_EET     5   /* Eastern European dst */
+#define DST_CAN     6   /* Canada */
+#define DST_GB      7   /* Great Britain and Eire */
+#define DST_RUM     8   /* Rumania */
+#define DST_TUR     9   /* Turkey */
+#define DST_AUSTALT 10  /* Australian style with shift in 1986 */
+
 /*
  * Structure returned by gettimeofday(2) system call,
  * and used in other calls.
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 50fbe0d5cc..8c32ee1ed0 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -424,7 +424,7 @@ int gettimeofday(struct timeval *tv, struct timezone *tz)
      */
     if(tz != RT_NULL)
     {
-        tz->tz_dsttime = 0;
+        tz->tz_dsttime = DST_NONE;
         tz->tz_minuteswest = -(RT_LIBC_FIXED_TIMEZONE * 60);
     }
 
-- 
cgit v1.3.1


From 3f74758f3189e3d126454a6e06d1fb818747a090 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 2 May 2021 09:29:46 +0800
Subject: 将<sys/time>改为"sys/time.h"
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 8c32ee1ed0..d5436e50e3 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -20,7 +20,7 @@
  * 2021-05-01     Meco Man     support fixed timezone
  */
 
-#include <sys/time.h>
+#include "sys/time.h"
 #include <rtthread.h>
 
 #ifdef RT_USING_DEVICE
-- 
cgit v1.3.1


From 1a55702ccb3f18f354c6f541d12e7a2eaa204569 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 2 May 2021 09:37:22 +0800
Subject: 修复DST_NONE 等宏定义位置放错导致报错的问题
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/sys/time.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
index be453ba276..bb1a9c96fd 100644
--- a/components/libc/compilers/common/sys/time.h
+++ b/components/libc/compilers/common/sys/time.h
@@ -18,9 +18,6 @@
 extern "C" {
 #endif
 
-#ifndef _TIMEVAL_DEFINED
-#define _TIMEVAL_DEFINED
-
 #define DST_NONE    0   /* not on dst */
 #define DST_USA     1   /* USA style dst */
 #define DST_AUST    2   /* Australian style dst */
@@ -33,6 +30,8 @@ extern "C" {
 #define DST_TUR     9   /* Turkey */
 #define DST_AUSTALT 10  /* Australian style with shift in 1986 */
 
+#ifndef _TIMEVAL_DEFINED
+#define _TIMEVAL_DEFINED
 /*
  * Structure returned by gettimeofday(2) system call,
  * and used in other calls.
-- 
cgit v1.3.1


From 8fee8d2c8cd30dea66cb60fa45e89538f2961c35 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Mon, 3 May 2021 09:17:46 +0800
Subject: remove const in set_timeval

---
 components/libc/compilers/common/time.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index d5436e50e3..9996212444 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -128,7 +128,7 @@ static rt_err_t get_timeval(struct timeval *tv)
  * @param tv: struct timeval
  * @return the operation status, RT_EOK on successful
  */
-static int set_timeval(const struct timeval *tv)
+static int set_timeval(struct timeval *tv)
 {
 #ifdef RT_USING_RTC
     static rt_device_t device = RT_NULL;
@@ -450,7 +450,7 @@ int settimeofday(const struct timeval *tv, const struct timezone *tz)
     if (tv != RT_NULL
         && tv->tv_sec >= 0
         && tv->tv_usec >= 0
-        && set_timeval(tv) == RT_EOK)
+        && set_timeval((struct timeval *)tv) == RT_EOK)
     {
         return 0;
     }
-- 
cgit v1.3.1


From d9abe8fa30f04e0ac54a7ea2c50f3df750cff04e Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 15 May 2021 21:27:31 +0800
Subject: 修复在simulator win32平台下，nonegcc文件夹路径没有添加到工程的bug
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/SConscript          | 12 +++++++-----
 components/libc/compilers/common/none-gcc/SConscript |  2 +-
 2 files changed, 8 insertions(+), 6 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/SConscript b/components/libc/compilers/common/SConscript
index d9de1cf17f..039e53a0b3 100644
--- a/components/libc/compilers/common/SConscript
+++ b/components/libc/compilers/common/SConscript
@@ -23,9 +23,11 @@ else:
 
 if GetDepend('RT_USING_LIBC') or GetDepend('RT_LIBC_USING_TIME'):
     group = DefineGroup('libc', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
-    list = os.listdir(cwd)
-    for d in list:
-        path = os.path.join(cwd, d)
-        if os.path.isfile(os.path.join(path, 'SConscript')):
-            group = group + SConscript(os.path.join(d, 'SConscript'))
+
+list = os.listdir(cwd)
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        group = group + SConscript(os.path.join(d, 'SConscript'))
+
 Return('group')
diff --git a/components/libc/compilers/common/none-gcc/SConscript b/components/libc/compilers/common/none-gcc/SConscript
index 346e69b478..c5838f8949 100644
--- a/components/libc/compilers/common/none-gcc/SConscript
+++ b/components/libc/compilers/common/none-gcc/SConscript
@@ -8,6 +8,6 @@ CPPPATH = [cwd]
 group = []
 src += Glob('*.c')
 
-if rtconfig.PLATFORM != 'gcc':
+if rtconfig.PLATFORM != 'gcc' or rtconfig.ARCH == 'sim':
     group = DefineGroup('libc', src, depend = ['RT_USING_LIBC'], CPPPATH = CPPPATH)
 Return('group')
-- 
cgit v1.3.1


From a5f7635f31b237ad8ce09610ee76a75f4072e7d4 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 22 May 2021 02:50:35 +0800
Subject: remove libc_errno.h & libc_limits.h

---
 components/dfs/include/dfs_fs.h                    |   2 +-
 .../libc/compilers/common/none-gcc/sys/errno.h     | 199 ++++++++++++++++++++
 components/libc/compilers/common/time.c            |   1 +
 components/libc/getline/posix_getline.c            |   6 +-
 components/libc/pthreads/posix_types.h             |   2 +-
 components/libc/termios/posix_termios.c            |   2 +-
 .../net/lwip-1.4.1/src/arch/include/arch/cc.h      |   2 +-
 .../net/lwip-2.0.2/src/arch/include/arch/cc.h      |   2 +-
 components/net/lwip-2.0.2/src/lwipopts.h           |   2 +
 .../net/lwip-2.1.2/src/arch/include/arch/cc.h      |   2 +-
 components/net/lwip-2.1.2/src/include/lwip/errno.h |   2 +-
 components/net/lwip-2.1.2/src/lwipopts.h           |   1 +
 components/net/sal_socket/socket/net_sockets.c     |   2 +-
 examples/libc/ex3.c                                |   2 +-
 examples/libc/ex6.c                                |   2 +-
 examples/libc/ex7.c                                |   2 +-
 examples/libc/file.c                               |   2 +-
 examples/libc/memory.c                             |   2 +-
 include/libc/libc_errno.h                          | 206 ---------------------
 include/libc/libc_limits.h                         |  25 ---
 include/rtlibc.h                                   |   2 -
 21 files changed, 219 insertions(+), 249 deletions(-)
 create mode 100644 components/libc/compilers/common/none-gcc/sys/errno.h
 delete mode 100644 include/libc/libc_errno.h
 delete mode 100644 include/libc/libc_limits.h

(limited to 'components/libc/compilers')

diff --git a/components/dfs/include/dfs_fs.h b/components/dfs/include/dfs_fs.h
index 828f15a0f5..3d194515df 100644
--- a/components/dfs/include/dfs_fs.h
+++ b/components/dfs/include/dfs_fs.h
@@ -15,7 +15,7 @@
 #ifdef RT_USING_LIBC
 #include <sys/types.h>
 #endif
-
+#include <sys/errno.h>
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/components/libc/compilers/common/none-gcc/sys/errno.h b/components/libc/compilers/common/none-gcc/sys/errno.h
new file mode 100644
index 0000000000..bdc3a3c9da
--- /dev/null
+++ b/components/libc/compilers/common/none-gcc/sys/errno.h
@@ -0,0 +1,199 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-05-22     Meco Man     The first version.
+ */
+#ifndef _SYS_ERRNO_H
+#define _SYS_ERRNO_H
+
+#if defined(__CC_ARM)
+/*
+defined in armcc/errno.h
+
+#define EDOM    1
+#define ERANGE  2
+#define EILSEQ  4
+#define ESIGNUM 3
+#define EINVAL  5
+#define ENOMEM  6
+*/
+
+#define ERROR_BASE_NO    7
+
+#elif defined(__IAR_SYSTEMS_ICC__)
+/* defined in iar/errno.h
+#define EDOM    33
+#define ERANGE  34
+#define EFPOS   35
+#define EILSEQ  36
+*/
+#define ERROR_BASE_NO    36
+
+#else
+#define ERROR_BASE_NO    0
+#endif
+
+#if !defined(_WIN32)
+
+#include <errno.h>
+
+#define EPERM            (ERROR_BASE_NO + 1)
+#define ENOENT           (ERROR_BASE_NO + 2)
+#define ESRCH            (ERROR_BASE_NO + 3)
+#define EINTR            (ERROR_BASE_NO + 4)
+#define EIO              (ERROR_BASE_NO + 5)
+#define ENXIO            (ERROR_BASE_NO + 6)
+#define E2BIG            (ERROR_BASE_NO + 7)
+#define ENOEXEC          (ERROR_BASE_NO + 8)
+#define EBADF            (ERROR_BASE_NO + 9)
+#define ECHILD          (ERROR_BASE_NO + 10)
+#define EAGAIN          (ERROR_BASE_NO + 11)
+
+#ifndef ENOMEM
+#define ENOMEM          (ERROR_BASE_NO + 12)
+#endif
+
+#define EACCES          (ERROR_BASE_NO + 13)
+#define EFAULT          (ERROR_BASE_NO + 14)
+#define ENOTBLK         (ERROR_BASE_NO + 15)
+#define EBUSY           (ERROR_BASE_NO + 16)
+#define EEXIST          (ERROR_BASE_NO + 17)
+#define EXDEV           (ERROR_BASE_NO + 18)
+#define ENODEV          (ERROR_BASE_NO + 19)
+#define ENOTDIR         (ERROR_BASE_NO + 20)
+#define EISDIR          (ERROR_BASE_NO + 21)
+
+#ifndef EINVAL
+#define EINVAL          (ERROR_BASE_NO + 22)
+#endif
+
+#define ENFILE          (ERROR_BASE_NO + 23)
+#define EMFILE          (ERROR_BASE_NO + 24)
+#define ENOTTY          (ERROR_BASE_NO + 25)
+#define ETXTBSY         (ERROR_BASE_NO + 26)
+#define EFBIG           (ERROR_BASE_NO + 27)
+#define ENOSPC          (ERROR_BASE_NO + 28)
+#define ESPIPE          (ERROR_BASE_NO + 29)
+#define EROFS           (ERROR_BASE_NO + 30)
+#define EMLINK          (ERROR_BASE_NO + 31)
+#define EPIPE           (ERROR_BASE_NO + 32)
+
+#ifndef EDOM
+#define EDOM            (ERROR_BASE_NO + 33)
+#endif
+
+#ifndef ERANGE
+#define ERANGE          (ERROR_BASE_NO + 34)
+#endif
+
+#define EDEADLK         (ERROR_BASE_NO + 35)
+#define ENAMETOOLONG    (ERROR_BASE_NO + 36)
+#define ENOLCK          (ERROR_BASE_NO + 37)
+#define ENOSYS          (ERROR_BASE_NO + 38)
+#define ENOTEMPTY       (ERROR_BASE_NO + 39)
+#define ELOOP           (ERROR_BASE_NO + 40)
+#define EWOULDBLOCK     EAGAIN
+#define ENOMSG          (ERROR_BASE_NO + 42)
+#define EIDRM           (ERROR_BASE_NO + 43)
+#define ECHRNG          (ERROR_BASE_NO + 44)
+#define EL2NSYNC        (ERROR_BASE_NO + 45)
+#define EL3HLT          (ERROR_BASE_NO + 46)
+#define EL3RST          (ERROR_BASE_NO + 47)
+#define ELNRNG          (ERROR_BASE_NO + 48)
+#define EUNATCH         (ERROR_BASE_NO + 49)
+#define ENOCSI          (ERROR_BASE_NO + 50)
+#define EL2HLT          (ERROR_BASE_NO + 51)
+#define EBADE           (ERROR_BASE_NO + 52)
+#define EBADR           (ERROR_BASE_NO + 53)
+#define EXFULL          (ERROR_BASE_NO + 54)
+#define ENOANO          (ERROR_BASE_NO + 55)
+#define EBADRQC         (ERROR_BASE_NO + 56)
+#define EBADSLT         (ERROR_BASE_NO + 57)
+#define EDEADLOCK       EDEADLK
+#define EBFONT          (ERROR_BASE_NO + 59)
+#define ENOSTR          (ERROR_BASE_NO + 60)
+#define ENODATA         (ERROR_BASE_NO + 61)
+#define ETIME           (ERROR_BASE_NO + 62)
+#define ENOSR           (ERROR_BASE_NO + 63)
+#define ENONET          (ERROR_BASE_NO + 64)
+#define ENOPKG          (ERROR_BASE_NO + 65)
+#define EREMOTE         (ERROR_BASE_NO + 66)
+#define ENOLINK         (ERROR_BASE_NO + 67)
+#define EADV            (ERROR_BASE_NO + 68)
+#define ESRMNT          (ERROR_BASE_NO + 69)
+#define ECOMM           (ERROR_BASE_NO + 70)
+#define EPROTO          (ERROR_BASE_NO + 71)
+#define EMULTIHOP       (ERROR_BASE_NO + 72)
+#define EDOTDOT         (ERROR_BASE_NO + 73)
+#define EBADMSG         (ERROR_BASE_NO + 74)
+#define EOVERFLOW       (ERROR_BASE_NO + 75)
+#define ENOTUNIQ        (ERROR_BASE_NO + 76)
+#define EBADFD          (ERROR_BASE_NO + 77)
+#define EREMCHG         (ERROR_BASE_NO + 78)
+#define ELIBACC         (ERROR_BASE_NO + 79)
+#define ELIBBAD         (ERROR_BASE_NO + 80)
+#define ELIBSCN         (ERROR_BASE_NO + 81)
+#define ELIBMAX         (ERROR_BASE_NO + 82)
+#define ELIBEXEC        (ERROR_BASE_NO + 83)
+
+#ifndef EILSEQ
+#define EILSEQ          (ERROR_BASE_NO + 84)
+#endif
+
+#define ERESTART        (ERROR_BASE_NO + 85)
+#define ESTRPIPE        (ERROR_BASE_NO + 86)
+#define EUSERS          (ERROR_BASE_NO + 87)
+#define ENOTSOCK        (ERROR_BASE_NO + 88)
+#define EDESTADDRREQ    (ERROR_BASE_NO + 89)
+#define EMSGSIZE        (ERROR_BASE_NO + 90)
+#define EPROTOTYPE      (ERROR_BASE_NO + 91)
+#define ENOPROTOOPT     (ERROR_BASE_NO + 92)
+#define EPROTONOSUPPORT (ERROR_BASE_NO + 93)
+#define ESOCKTNOSUPPORT (ERROR_BASE_NO + 94)
+#define EOPNOTSUPP      (ERROR_BASE_NO + 95)
+#define ENOTSUP         EOPNOTSUPP
+#define EPFNOSUPPORT    (ERROR_BASE_NO + 96)
+#define EAFNOSUPPORT    (ERROR_BASE_NO + 97)
+#define EADDRINUSE      (ERROR_BASE_NO + 98)
+#define EADDRNOTAVAIL   (ERROR_BASE_NO + 99)
+#define ENETDOWN        (ERROR_BASE_NO + 100)
+#define ENETUNREACH     (ERROR_BASE_NO + 101)
+#define ENETRESET       (ERROR_BASE_NO + 102)
+#define ECONNABORTED    (ERROR_BASE_NO + 103)
+#define ECONNRESET      (ERROR_BASE_NO + 104)
+#define ENOBUFS         (ERROR_BASE_NO + 105)
+#define EISCONN         (ERROR_BASE_NO + 106)
+#define ENOTCONN        (ERROR_BASE_NO + 107)
+#define ESHUTDOWN       (ERROR_BASE_NO + 108)
+#define ETOOMANYREFS    (ERROR_BASE_NO + 109)
+#define ETIMEDOUT       (ERROR_BASE_NO + 110)
+#define ECONNREFUSED    (ERROR_BASE_NO + 111)
+#define EHOSTDOWN       (ERROR_BASE_NO + 112)
+#define EHOSTUNREACH    (ERROR_BASE_NO + 113)
+#define EALREADY        (ERROR_BASE_NO + 114)
+#define EINPROGRESS     (ERROR_BASE_NO + 115)
+#define ESTALE          (ERROR_BASE_NO + 116)
+#define EUCLEAN         (ERROR_BASE_NO + 117)
+#define ENOTNAM         (ERROR_BASE_NO + 118)
+#define ENAVAIL         (ERROR_BASE_NO + 119)
+#define EISNAM          (ERROR_BASE_NO + 120)
+#define EREMOTEIO       (ERROR_BASE_NO + 121)
+#define EDQUOT          (ERROR_BASE_NO + 122)
+#define ENOMEDIUM       (ERROR_BASE_NO + 123)
+#define EMEDIUMTYPE     (ERROR_BASE_NO + 124)
+#define ECANCELED       (ERROR_BASE_NO + 125)
+#define ENOKEY          (ERROR_BASE_NO + 126)
+#define EKEYEXPIRED     (ERROR_BASE_NO + 127)
+#define EKEYREVOKED     (ERROR_BASE_NO + 128)
+#define EKEYREJECTED    (ERROR_BASE_NO + 129)
+#define EOWNERDEAD      (ERROR_BASE_NO + 130)
+#define ENOTRECOVERABLE (ERROR_BASE_NO + 131)
+#define ERFKILL         (ERROR_BASE_NO + 132)
+#define EHWPOISON       (ERROR_BASE_NO + 133)
+#endif
+
+#endif
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 9996212444..4cdfe77343 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -21,6 +21,7 @@
  */
 
 #include "sys/time.h"
+#include <sys/errno.h>
 #include <rtthread.h>
 
 #ifdef RT_USING_DEVICE
diff --git a/components/libc/getline/posix_getline.c b/components/libc/getline/posix_getline.c
index 794ac3a07d..da80242ecc 100644
--- a/components/libc/getline/posix_getline.c
+++ b/components/libc/getline/posix_getline.c
@@ -11,8 +11,8 @@
 
 #include "posix_getline.h"
 #include <stdlib.h>
-#include <errno.h>
-#include <rtlibc.h>
+#include <limits.h>
+#include <sys/errno.h>
 
 ssize_t getdelim(char **lineptr, size_t *n, int delim, FILE *stream) {
     char *cur_pos, *new_lineptr;
@@ -43,7 +43,7 @@ ssize_t getdelim(char **lineptr, size_t *n, int delim, FILE *stream) {
             break;
 
         if ((*lineptr + *n - cur_pos) < 2) {
-            if (SSIZE_MAX / 2 < *n) {
+            if (LONG_MAX / 2 < *n) {
 #ifdef EOVERFLOW
                 errno = EOVERFLOW;
 #else
diff --git a/components/libc/pthreads/posix_types.h b/components/libc/pthreads/posix_types.h
index 942657ef39..5838e8b370 100644
--- a/components/libc/pthreads/posix_types.h
+++ b/components/libc/pthreads/posix_types.h
@@ -20,7 +20,7 @@
 #include <sys/types.h>
 #include <sys/time.h>
 #include <unistd.h>
-#include <errno.h>
+#include <sys/errno.h>
 #include <fcntl.h>
 
 #endif
diff --git a/components/libc/termios/posix_termios.c b/components/libc/termios/posix_termios.c
index 01ba010c86..10a1f466d6 100644
--- a/components/libc/termios/posix_termios.c
+++ b/components/libc/termios/posix_termios.c
@@ -11,7 +11,7 @@
 #include <string.h>
 #include <rtthread.h>
 #include <dfs_posix.h>
-
+#include <sys/errno.h>
 #include <termios.h>
 
 int tcgetattr(int fd, struct termios *tio)
diff --git a/components/net/lwip-1.4.1/src/arch/include/arch/cc.h b/components/net/lwip-1.4.1/src/arch/include/arch/cc.h
index 8dd59e8dee..880366d1f8 100644
--- a/components/net/lwip-1.4.1/src/arch/include/arch/cc.h
+++ b/components/net/lwip-1.4.1/src/arch/include/arch/cc.h
@@ -105,7 +105,7 @@ void sys_arch_assert(const char* file, int line);
 #define LWIP_PLATFORM_DIAG(x)   do {rt_kprintf x;} while(0)
 #define LWIP_PLATFORM_ASSERT(x) do {rt_kprintf(x); sys_arch_assert(__FILE__, __LINE__);}while(0)
 
-#include "string.h"
+#include <string.h>
 
 #define SYS_ARCH_DECL_PROTECT(level)
 #define SYS_ARCH_PROTECT(level)     rt_enter_critical()
diff --git a/components/net/lwip-2.0.2/src/arch/include/arch/cc.h b/components/net/lwip-2.0.2/src/arch/include/arch/cc.h
index e3014f552c..a17b162805 100644
--- a/components/net/lwip-2.0.2/src/arch/include/arch/cc.h
+++ b/components/net/lwip-2.0.2/src/arch/include/arch/cc.h
@@ -84,7 +84,7 @@ void sys_arch_assert(const char* file, int line);
 #define LWIP_PLATFORM_DIAG(x)   do {rt_kprintf x;} while(0)
 #define LWIP_PLATFORM_ASSERT(x) do {rt_kprintf(x); sys_arch_assert(__FILE__, __LINE__);}while(0)
 
-#include "string.h"
+#include <string.h>
 
 #define SYS_ARCH_DECL_PROTECT(level)
 #define SYS_ARCH_PROTECT(level)     rt_enter_critical()
diff --git a/components/net/lwip-2.0.2/src/lwipopts.h b/components/net/lwip-2.0.2/src/lwipopts.h
index 09bd223aa4..b334c5ac17 100644
--- a/components/net/lwip-2.0.2/src/lwipopts.h
+++ b/components/net/lwip-2.0.2/src/lwipopts.h
@@ -5,6 +5,8 @@
 
 #define ERRNO                       1
 
+#define LWIP_ERRNO_STDINCLUDE
+
 #define LWIP_IPV4                   1
 
 #ifdef RT_USING_LWIP_IPV6
diff --git a/components/net/lwip-2.1.2/src/arch/include/arch/cc.h b/components/net/lwip-2.1.2/src/arch/include/arch/cc.h
index 413fef65df..e85ca1d085 100644
--- a/components/net/lwip-2.1.2/src/arch/include/arch/cc.h
+++ b/components/net/lwip-2.1.2/src/arch/include/arch/cc.h
@@ -46,7 +46,7 @@
 #define X32_F "lx"
 
 #ifdef RT_USING_LIBC
-#include <errno.h>
+#include <sys/errno.h>
 #ifndef ENSRNOTFOUND
 #define ENSRNOTFOUND 163  /* Domain name not found */
 #endif
diff --git a/components/net/lwip-2.1.2/src/include/lwip/errno.h b/components/net/lwip-2.1.2/src/include/lwip/errno.h
index 48d6b539d8..9fd88fc91a 100644
--- a/components/net/lwip-2.1.2/src/include/lwip/errno.h
+++ b/components/net/lwip-2.1.2/src/include/lwip/errno.h
@@ -181,7 +181,7 @@ extern int errno;
 
 /* Define LWIP_ERRNO_STDINCLUDE if you want to include <errno.h> here */
 #ifdef LWIP_ERRNO_STDINCLUDE
-#include <errno.h>
+#include <sys/errno.h>
 #else /* LWIP_ERRNO_STDINCLUDE */
 /* Define LWIP_ERRNO_INCLUDE to an equivalent of <errno.h> to include the error defines here */
 #ifdef LWIP_ERRNO_INCLUDE
diff --git a/components/net/lwip-2.1.2/src/lwipopts.h b/components/net/lwip-2.1.2/src/lwipopts.h
index 220bb6fa41..8c2bfbdd76 100644
--- a/components/net/lwip-2.1.2/src/lwipopts.h
+++ b/components/net/lwip-2.1.2/src/lwipopts.h
@@ -5,6 +5,7 @@
 
 #define ERRNO                       1
 
+#define LWIP_ERRNO_STDINCLUDE
 #define LWIP_SOCKET_SELECT 1
 #define LWIP_SOCKET_POLL 1
 
diff --git a/components/net/sal_socket/socket/net_sockets.c b/components/net/sal_socket/socket/net_sockets.c
index 3637635d50..7d4db34327 100644
--- a/components/net/sal_socket/socket/net_sockets.c
+++ b/components/net/sal_socket/socket/net_sockets.c
@@ -13,7 +13,7 @@
 #include <dfs_file.h>
 #include <dfs_poll.h>
 #include <dfs_net.h>
-
+#include <sys/errno.h>
 #include <sys/socket.h>
 
 int accept(int s, struct sockaddr *addr, socklen_t *addrlen)
diff --git a/examples/libc/ex3.c b/examples/libc/ex3.c
index 1697e7145b..615ed8f35c 100644
--- a/examples/libc/ex3.c
+++ b/examples/libc/ex3.c
@@ -9,7 +9,7 @@
 /* Multi-thread searching.
    Illustrates: thread cancellation, cleanup handlers. */
 
-#include <errno.h>
+#include <sys/errno.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>
diff --git a/examples/libc/ex6.c b/examples/libc/ex6.c
index ac6319d74c..ba687aa46f 100644
--- a/examples/libc/ex6.c
+++ b/examples/libc/ex6.c
@@ -6,7 +6,7 @@
  * Change Logs:
  * Date           Author       Notes
  */
-#include <errno.h>
+#include <sys/errno.h>
 #include <stdio.h>
 #include <string.h>
 #include <pthread.h>
diff --git a/examples/libc/ex7.c b/examples/libc/ex7.c
index e885f79c57..d1f05dbdcd 100644
--- a/examples/libc/ex7.c
+++ b/examples/libc/ex7.c
@@ -11,7 +11,7 @@
  * Test case that illustrates a timed wait on a condition variable.
  */
 
-#include <errno.h>
+#include <sys/errno.h>
 #include <stdio.h>
 #include <string.h>
 #include <pthread.h>
diff --git a/examples/libc/file.c b/examples/libc/file.c
index 79cdce3092..878d3a98d7 100644
--- a/examples/libc/file.c
+++ b/examples/libc/file.c
@@ -11,7 +11,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <finsh.h>
-#include <errno.h>
+#include <sys/errno.h>
 #include <sys/fcntl.h>
 #include <sys/stat.h>
 
diff --git a/examples/libc/memory.c b/examples/libc/memory.c
index 063d90cfdc..4a31b69017 100644
--- a/examples/libc/memory.c
+++ b/examples/libc/memory.c
@@ -11,7 +11,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <finsh.h>
-#include <errno.h>
+#include <sys/errno.h>
 
 static int errors = 0;
 static void merror(const char *msg)
diff --git a/include/libc/libc_errno.h b/include/libc/libc_errno.h
deleted file mode 100644
index 30d6092e33..0000000000
--- a/include/libc/libc_errno.h
+++ /dev/null
@@ -1,206 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2016-11-12     Bernard      The first version
- */
-
-#ifndef LIBC_ERRNO_H__
-#define LIBC_ERRNO_H__
-
-#include <rtconfig.h>
-
-#if defined(RT_USING_NEWLIB) || defined(_WIN32) || (defined( __GNUC__ ) && !defined(__ARMCC_VERSION))
-/* use errno.h file in toolchains */
-#include <errno.h>
-#endif
-
-#if defined(__CC_ARM)
-/*
-defined in armcc/errno.h
-
-#define EDOM    1
-#define ERANGE  2
-#define EILSEQ  4
-#define ESIGNUM 3
-#define EINVAL  5
-#define ENOMEM  6
-*/
-#define ERROR_BASE_NO    7
-
-#elif defined(__IAR_SYSTEMS_ICC__)
-/* defined in iar/errno.h
-#define EDOM    33
-#define ERANGE  34
-#define EFPOS   35
-#define EILSEQ  36
-*/
-#define ERROR_BASE_NO    36
-
-#else
-
-#define ERROR_BASE_NO    0
-#endif
-
-#if !defined(RT_USING_NEWLIB) && !defined(_WIN32) && !(defined( __GNUC__ ) && !defined(__ARMCC_VERSION))
-
-#define EPERM            (ERROR_BASE_NO + 1)
-#define ENOENT           (ERROR_BASE_NO + 2)
-#define ESRCH            (ERROR_BASE_NO + 3)
-#define EINTR            (ERROR_BASE_NO + 4)
-#define EIO              (ERROR_BASE_NO + 5)
-#define ENXIO            (ERROR_BASE_NO + 6)
-#define E2BIG            (ERROR_BASE_NO + 7)
-#define ENOEXEC          (ERROR_BASE_NO + 8)
-#define EBADF            (ERROR_BASE_NO + 9)
-#define ECHILD          (ERROR_BASE_NO + 10)
-#define EAGAIN          (ERROR_BASE_NO + 11)
-
-#ifndef ENOMEM
-#define ENOMEM          (ERROR_BASE_NO + 12)
-#endif
-
-#define EACCES          (ERROR_BASE_NO + 13)
-#define EFAULT          (ERROR_BASE_NO + 14)
-#define ENOTBLK         (ERROR_BASE_NO + 15)
-#define EBUSY           (ERROR_BASE_NO + 16)
-#define EEXIST          (ERROR_BASE_NO + 17)
-#define EXDEV           (ERROR_BASE_NO + 18)
-#define ENODEV          (ERROR_BASE_NO + 19)
-#define ENOTDIR         (ERROR_BASE_NO + 20)
-#define EISDIR          (ERROR_BASE_NO + 21)
-
-#ifndef EINVAL
-#define EINVAL          (ERROR_BASE_NO + 22)
-#endif
-
-#define ENFILE          (ERROR_BASE_NO + 23)
-#define EMFILE          (ERROR_BASE_NO + 24)
-#define ENOTTY          (ERROR_BASE_NO + 25)
-#define ETXTBSY         (ERROR_BASE_NO + 26)
-#define EFBIG           (ERROR_BASE_NO + 27)
-#define ENOSPC          (ERROR_BASE_NO + 28)
-#define ESPIPE          (ERROR_BASE_NO + 29)
-#define EROFS           (ERROR_BASE_NO + 30)
-#define EMLINK          (ERROR_BASE_NO + 31)
-#define EPIPE           (ERROR_BASE_NO + 32)
-
-#ifndef EDOM
-#define EDOM            (ERROR_BASE_NO + 33)
-#endif
-
-#ifndef ERANGE
-#define ERANGE          (ERROR_BASE_NO + 34)
-#endif
-
-#define EDEADLK         (ERROR_BASE_NO + 35)
-#define ENAMETOOLONG    (ERROR_BASE_NO + 36)
-#define ENOLCK          (ERROR_BASE_NO + 37)
-#define ENOSYS          (ERROR_BASE_NO + 38)
-#define ENOTEMPTY       (ERROR_BASE_NO + 39)
-#define ELOOP           (ERROR_BASE_NO + 40)
-#define EWOULDBLOCK     EAGAIN
-#define ENOMSG          (ERROR_BASE_NO + 42)
-#define EIDRM           (ERROR_BASE_NO + 43)
-#define ECHRNG          (ERROR_BASE_NO + 44)
-#define EL2NSYNC        (ERROR_BASE_NO + 45)
-#define EL3HLT          (ERROR_BASE_NO + 46)
-#define EL3RST          (ERROR_BASE_NO + 47)
-#define ELNRNG          (ERROR_BASE_NO + 48)
-#define EUNATCH         (ERROR_BASE_NO + 49)
-#define ENOCSI          (ERROR_BASE_NO + 50)
-#define EL2HLT          (ERROR_BASE_NO + 51)
-#define EBADE           (ERROR_BASE_NO + 52)
-#define EBADR           (ERROR_BASE_NO + 53)
-#define EXFULL          (ERROR_BASE_NO + 54)
-#define ENOANO          (ERROR_BASE_NO + 55)
-#define EBADRQC         (ERROR_BASE_NO + 56)
-#define EBADSLT         (ERROR_BASE_NO + 57)
-#define EDEADLOCK       EDEADLK
-#define EBFONT          (ERROR_BASE_NO + 59)
-#define ENOSTR          (ERROR_BASE_NO + 60)
-#define ENODATA         (ERROR_BASE_NO + 61)
-#define ETIME           (ERROR_BASE_NO + 62)
-#define ENOSR           (ERROR_BASE_NO + 63)
-#define ENONET          (ERROR_BASE_NO + 64)
-#define ENOPKG          (ERROR_BASE_NO + 65)
-#define EREMOTE         (ERROR_BASE_NO + 66)
-#define ENOLINK         (ERROR_BASE_NO + 67)
-#define EADV            (ERROR_BASE_NO + 68)
-#define ESRMNT          (ERROR_BASE_NO + 69)
-#define ECOMM           (ERROR_BASE_NO + 70)
-#define EPROTO          (ERROR_BASE_NO + 71)
-#define EMULTIHOP       (ERROR_BASE_NO + 72)
-#define EDOTDOT         (ERROR_BASE_NO + 73)
-#define EBADMSG         (ERROR_BASE_NO + 74)
-#define EOVERFLOW       (ERROR_BASE_NO + 75)
-#define ENOTUNIQ        (ERROR_BASE_NO + 76)
-#define EBADFD          (ERROR_BASE_NO + 77)
-#define EREMCHG         (ERROR_BASE_NO + 78)
-#define ELIBACC         (ERROR_BASE_NO + 79)
-#define ELIBBAD         (ERROR_BASE_NO + 80)
-#define ELIBSCN         (ERROR_BASE_NO + 81)
-#define ELIBMAX         (ERROR_BASE_NO + 82)
-#define ELIBEXEC        (ERROR_BASE_NO + 83)
-
-#ifndef EILSEQ
-#define EILSEQ          (ERROR_BASE_NO + 84)
-#endif
-
-#define ERESTART        (ERROR_BASE_NO + 85)
-#define ESTRPIPE        (ERROR_BASE_NO + 86)
-#define EUSERS          (ERROR_BASE_NO + 87)
-#define ENOTSOCK        (ERROR_BASE_NO + 88)
-#define EDESTADDRREQ    (ERROR_BASE_NO + 89)
-#define EMSGSIZE        (ERROR_BASE_NO + 90)
-#define EPROTOTYPE      (ERROR_BASE_NO + 91)
-#define ENOPROTOOPT     (ERROR_BASE_NO + 92)
-#define EPROTONOSUPPORT (ERROR_BASE_NO + 93)
-#define ESOCKTNOSUPPORT (ERROR_BASE_NO + 94)
-#define EOPNOTSUPP      (ERROR_BASE_NO + 95)
-#define ENOTSUP         EOPNOTSUPP
-#define EPFNOSUPPORT    (ERROR_BASE_NO + 96)
-#define EAFNOSUPPORT    (ERROR_BASE_NO + 97)
-#define EADDRINUSE      (ERROR_BASE_NO + 98)
-#define EADDRNOTAVAIL   (ERROR_BASE_NO + 99)
-#define ENETDOWN        (ERROR_BASE_NO + 100)
-#define ENETUNREACH     (ERROR_BASE_NO + 101)
-#define ENETRESET       (ERROR_BASE_NO + 102)
-#define ECONNABORTED    (ERROR_BASE_NO + 103)
-#define ECONNRESET      (ERROR_BASE_NO + 104)
-#define ENOBUFS         (ERROR_BASE_NO + 105)
-#define EISCONN         (ERROR_BASE_NO + 106)
-#define ENOTCONN        (ERROR_BASE_NO + 107)
-#define ESHUTDOWN       (ERROR_BASE_NO + 108)
-#define ETOOMANYREFS    (ERROR_BASE_NO + 109)
-#define ETIMEDOUT       (ERROR_BASE_NO + 110)
-#define ECONNREFUSED    (ERROR_BASE_NO + 111)
-#define EHOSTDOWN       (ERROR_BASE_NO + 112)
-#define EHOSTUNREACH    (ERROR_BASE_NO + 113)
-#define EALREADY        (ERROR_BASE_NO + 114)
-#define EINPROGRESS     (ERROR_BASE_NO + 115)
-#define ESTALE          (ERROR_BASE_NO + 116)
-#define EUCLEAN         (ERROR_BASE_NO + 117)
-#define ENOTNAM         (ERROR_BASE_NO + 118)
-#define ENAVAIL         (ERROR_BASE_NO + 119)
-#define EISNAM          (ERROR_BASE_NO + 120)
-#define EREMOTEIO       (ERROR_BASE_NO + 121)
-#define EDQUOT          (ERROR_BASE_NO + 122)
-#define ENOMEDIUM       (ERROR_BASE_NO + 123)
-#define EMEDIUMTYPE     (ERROR_BASE_NO + 124)
-#define ECANCELED       (ERROR_BASE_NO + 125)
-#define ENOKEY          (ERROR_BASE_NO + 126)
-#define EKEYEXPIRED     (ERROR_BASE_NO + 127)
-#define EKEYREVOKED     (ERROR_BASE_NO + 128)
-#define EKEYREJECTED    (ERROR_BASE_NO + 129)
-#define EOWNERDEAD      (ERROR_BASE_NO + 130)
-#define ENOTRECOVERABLE (ERROR_BASE_NO + 131)
-#define ERFKILL         (ERROR_BASE_NO + 132)
-#define EHWPOISON       (ERROR_BASE_NO + 133)
-
-#endif
-
-#endif
diff --git a/include/libc/libc_limits.h b/include/libc/libc_limits.h
deleted file mode 100644
index 36b8dbb202..0000000000
--- a/include/libc/libc_limits.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-09-05     Meco Man     the first version
- */
-
-#ifndef LIBC_LIMITS_H__
-#define LIBC_LIMITS_H__
-
-#include <limits.h>
-#include <rtconfig.h>
-
-#ifdef RT_USING_POSIX
-
-#ifndef SSIZE_MAX
-# define SSIZE_MAX      LONG_MAX
-#endif
-
-#endif
-
-#endif
diff --git a/include/rtlibc.h b/include/rtlibc.h
index 50bddc6ee8..a62051e157 100644
--- a/include/rtlibc.h
+++ b/include/rtlibc.h
@@ -13,14 +13,12 @@
 
 /* definitions for libc if toolchain has no these definitions */
 #include "libc/libc_stat.h"
-#include "libc/libc_errno.h"
 
 #include "libc/libc_fcntl.h"
 #include "libc/libc_ioctl.h"
 #include "libc/libc_dirent.h"
 #include "libc/libc_signal.h"
 #include "libc/libc_fdset.h"
-#include "libc/libc_limits.h"
 #include "libc/libc_stdio.h"
 
 #ifndef RT_USING_LIBC
-- 
cgit v1.3.1


From b10bef6f241bfd9a6ecba3412351b20f3aa2eb13 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 22 May 2021 03:20:01 +0800
Subject: [sys/errno.h] 修复lwip报错
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/none-gcc/sys/errno.h |  4 +---
 components/net/lwip-1.4.1/src/arch/include/arch/cc.h  |  8 ++++----
 components/net/lwip-2.0.2/src/arch/include/arch/cc.h  | 12 ++++++++++++
 components/net/lwip-2.1.2/src/arch/include/arch/cc.h  |  7 +++----
 4 files changed, 20 insertions(+), 11 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/none-gcc/sys/errno.h b/components/libc/compilers/common/none-gcc/sys/errno.h
index bdc3a3c9da..773c2cd7d3 100644
--- a/components/libc/compilers/common/none-gcc/sys/errno.h
+++ b/components/libc/compilers/common/none-gcc/sys/errno.h
@@ -37,10 +37,8 @@ defined in armcc/errno.h
 #define ERROR_BASE_NO    0
 #endif
 
-#if !defined(_WIN32)
-
+#if defined(__CC_ARM) || defined(__IAR_SYSTEMS_ICC__)
 #include <errno.h>
-
 #define EPERM            (ERROR_BASE_NO + 1)
 #define ENOENT           (ERROR_BASE_NO + 2)
 #define ESRCH            (ERROR_BASE_NO + 3)
diff --git a/components/net/lwip-1.4.1/src/arch/include/arch/cc.h b/components/net/lwip-1.4.1/src/arch/include/arch/cc.h
index 880366d1f8..23562703c3 100644
--- a/components/net/lwip-1.4.1/src/arch/include/arch/cc.h
+++ b/components/net/lwip-1.4.1/src/arch/include/arch/cc.h
@@ -54,16 +54,16 @@ typedef uintptr_t mem_ptr_t;
 #define S32_F "ld"
 #define X32_F "lx"
 
-#ifdef RT_USING_LIBC
-#if !defined(__CC_ARM) && !defined(__IAR_SYSTEMS_ICC__)
-
+#include <sys/errno.h>
 /* some errno not defined in newlib */
+#ifndef ENSRNOTFOUND
 #define ENSRNOTFOUND 163  /* Domain name not found */
 /* WARNING: ESHUTDOWN also not defined in newlib. We chose
             180 here because the number "108" which is used
             in arch.h has been assigned to another error code. */
+#endif
+#ifndef ESHUTDOWN
 #define ESHUTDOWN 180
-#endif /* __CC_ARM/__IAR_SYSTEMS_ICC__ */
 #endif
 
 #if defined(RT_USING_LIBC) || defined(RT_LIBC_USING_TIME) || (defined( __GNUC__ ) && !defined(__ARMCC_VERSION))
diff --git a/components/net/lwip-2.0.2/src/arch/include/arch/cc.h b/components/net/lwip-2.0.2/src/arch/include/arch/cc.h
index a17b162805..51662ae4a5 100644
--- a/components/net/lwip-2.0.2/src/arch/include/arch/cc.h
+++ b/components/net/lwip-2.0.2/src/arch/include/arch/cc.h
@@ -45,6 +45,18 @@
 #define S32_F "ld"
 #define X32_F "lx"
 
+#include <sys/errno.h>
+/* some errno not defined in newlib */
+#ifndef ENSRNOTFOUND
+#define ENSRNOTFOUND 163  /* Domain name not found */
+/* WARNING: ESHUTDOWN also not defined in newlib. We chose
+            180 here because the number "108" which is used
+            in arch.h has been assigned to another error code. */
+#endif
+#ifndef ESHUTDOWN
+#define ESHUTDOWN 180
+#endif
+
 #if defined(RT_USING_LIBC) || defined(RT_LIBC_USING_TIME) || (defined( __GNUC__ ) && !defined(__ARMCC_VERSION))
 #include <sys/time.h>
 #define LWIP_TIMEVAL_PRIVATE       0
diff --git a/components/net/lwip-2.1.2/src/arch/include/arch/cc.h b/components/net/lwip-2.1.2/src/arch/include/arch/cc.h
index e85ca1d085..f4068c1d80 100644
--- a/components/net/lwip-2.1.2/src/arch/include/arch/cc.h
+++ b/components/net/lwip-2.1.2/src/arch/include/arch/cc.h
@@ -45,18 +45,17 @@
 #define S32_F "ld"
 #define X32_F "lx"
 
-#ifdef RT_USING_LIBC
 #include <sys/errno.h>
+/* some errno not defined in newlib */
 #ifndef ENSRNOTFOUND
 #define ENSRNOTFOUND 163  /* Domain name not found */
-#endif
-#ifndef ESHUTDOWN
 /* WARNING: ESHUTDOWN also not defined in newlib. We chose
             180 here because the number "108" which is used
             in arch.h has been assigned to another error code. */
+#endif
+#ifndef ESHUTDOWN
 #define ESHUTDOWN 180
 #endif
-#endif /* RT_USING_LIBC */
 
 #if defined(RT_USING_LIBC) || defined(RT_LIBC_USING_TIME) || (defined( __GNUC__ ) && !defined(__ARMCC_VERSION))
 #include <sys/time.h>
-- 
cgit v1.3.1


From 0e32728a5d688c51bc844617de7d89d7fdbe34d0 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 23 May 2021 00:14:22 +0800
Subject: [libc][rtlibc] remove libc_ioctl.h

---
 components/libc/compilers/common/sys/ioctl.h | 220 +++++++++++++++++++++++++
 include/libc/libc_ioctl.h                    | 229 ---------------------------
 include/rtlibc.h                             |   1 -
 3 files changed, 220 insertions(+), 230 deletions(-)
 delete mode 100644 include/libc/libc_ioctl.h

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/sys/ioctl.h b/components/libc/compilers/common/sys/ioctl.h
index 648d90230d..51f51f2ea4 100644
--- a/components/libc/compilers/common/sys/ioctl.h
+++ b/components/libc/compilers/common/sys/ioctl.h
@@ -15,4 +15,224 @@
 #include <dfs_posix.h>
 #endif
 
+struct winsize {
+    unsigned short ws_row;
+    unsigned short ws_col;
+    unsigned short ws_xpixel;
+    unsigned short ws_ypixel;
+};
+
+#define _IOC(a,b,c,d) ( ((a)<<30) | ((b)<<8) | (c) | ((d)<<16) )
+#define _IOC_NONE  0U
+#define _IOC_WRITE 1U
+#define _IOC_READ  2U
+
+#if !defined (_WIN32) && !defined (__TASKING__)
+#define _IO(a,b)    _IOC(_IOC_NONE,(a),(b),0)
+#define _IOW(a,b,c) _IOC(_IOC_WRITE,(a),(b),sizeof(c))
+#define _IOR(a,b,c) _IOC(_IOC_READ,(a),(b),sizeof(c))
+#define _IOWR(a,b,c) _IOC(_IOC_READ|_IOC_WRITE,(a),(b),sizeof(c))
+
+#define FIONREAD    _IOR('f', 127, int) /* get # bytes to read */
+#define FIONBIO     _IOW('f', 126, int) /* set/clear non-blocking i/o */
+#define FIONWRITE   _IOR('f', 121, int) /* get # bytes outstanding in send queue */
+#endif
+
+#define TCGETS      0x5401
+#define TCSETS      0x5402
+#define TCSETSW     0x5403
+#define TCSETSF     0x5404
+#define TCGETA      0x5405
+#define TCSETA      0x5406
+#define TCSETAW     0x5407
+#define TCSETAF     0x5408
+#define TCSBRK      0x5409
+#define TCXONC      0x540A
+#define TCFLSH      0x540B
+#define TIOCEXCL    0x540C
+#define TIOCNXCL    0x540D
+#define TIOCSCTTY   0x540E
+#define TIOCGPGRP   0x540F
+#define TIOCSPGRP   0x5410
+#define TIOCOUTQ    0x5411
+#define TIOCSTI     0x5412
+#define TIOCGWINSZ  0x5413
+#define TIOCSWINSZ  0x5414
+#define TIOCMGET    0x5415
+#define TIOCMBIS    0x5416
+#define TIOCMBIC    0x5417
+#define TIOCMSET    0x5418
+#define TIOCGSOFTCAR    0x5419
+#define TIOCSSOFTCAR    0x541A
+#ifndef FIONREAD
+#define FIONREAD 0x541B
+#endif
+#define TIOCINQ     FIONREAD
+#define TIOCLINUX   0x541C
+#define TIOCCONS    0x541D
+#define TIOCGSERIAL 0x541E
+#define TIOCSSERIAL 0x541F
+#define TIOCPKT     0x5420
+#ifndef FIONBIO
+#define FIONBIO  0x5421
+#endif
+#define TIOCNOTTY   0x5422
+#define TIOCSETD    0x5423
+#define TIOCGETD    0x5424
+#define TCSBRKP     0x5425
+#define TIOCSBRK    0x5427
+#define TIOCCBRK    0x5428
+#define TIOCGSID    0x5429
+#define TIOCGRS485  0x542E
+#define TIOCSRS485  0x542F
+#define TIOCGPTN    0x80045430
+#define TIOCSPTLCK  0x40045431
+#define TIOCGDEV    0x80045432
+#define TCGETX      0x5432
+#define TCSETX      0x5433
+#define TCSETXF     0x5434
+#define TCSETXW     0x5435
+#define TIOCSIG     0x40045436
+#define TIOCVHANGUP 0x5437
+#define TIOCGPKT    0x80045438
+#define TIOCGPTLCK  0x80045439
+#define TIOCGEXCL   0x80045440
+
+#define FIONCLEX    0x5450
+#define FIOCLEX     0x5451
+
+#ifndef _WIN32
+#define FIOASYNC    0x5452
+#endif
+
+#define TIOCSERCONFIG   0x5453
+#define TIOCSERGWILD    0x5454
+#define TIOCSERSWILD    0x5455
+#define TIOCGLCKTRMIOS  0x5456
+#define TIOCSLCKTRMIOS  0x5457
+#define TIOCSERGSTRUCT  0x5458
+#define TIOCSERGETLSR   0x5459
+#define TIOCSERGETMULTI 0x545A
+#define TIOCSERSETMULTI 0x545B
+
+#define TIOCMIWAIT  0x545C
+#define TIOCGICOUNT 0x545D
+#define FIOQSIZE    0x5460
+
+#define TIOCPKT_DATA         0
+#define TIOCPKT_FLUSHREAD    1
+#define TIOCPKT_FLUSHWRITE   2
+#define TIOCPKT_STOP         4
+#define TIOCPKT_START        8
+#define TIOCPKT_NOSTOP      16
+#define TIOCPKT_DOSTOP      32
+#define TIOCPKT_IOCTL       64
+
+#define TIOCSER_TEMT    0x01
+
+#define TIOCM_LE        0x001
+#define TIOCM_DTR       0x002
+#define TIOCM_RTS       0x004
+#define TIOCM_ST        0x008
+#define TIOCM_SR        0x010
+#define TIOCM_CTS       0x020
+#define TIOCM_CAR       0x040
+#define TIOCM_RNG       0x080
+#define TIOCM_DSR       0x100
+#define TIOCM_CD        TIOCM_CAR
+#define TIOCM_RI        TIOCM_RNG
+#define TIOCM_OUT1      0x2000
+#define TIOCM_OUT2      0x4000
+#define TIOCM_LOOP      0x8000
+
+#define N_TTY           0
+#define N_SLIP          1
+#define N_MOUSE         2
+#define N_PPP           3
+#define N_STRIP         4
+#define N_AX25          5
+#define N_X25           6
+#define N_6PACK         7
+#define N_MASC          8
+#define N_R3964         9
+#define N_PROFIBUS_FDL  10
+#define N_IRDA          11
+#define N_SMSBLOCK      12
+#define N_HDLC          13
+#define N_SYNC_PPP      14
+#define N_HCI           15
+
+#define FIOSETOWN       0x8901
+#define SIOCSPGRP       0x8902
+#define FIOGETOWN       0x8903
+#define SIOCGPGRP       0x8904
+#ifndef SIOCATMARK
+#define SIOCATMARK      0x8905
+#endif
+#define SIOCGSTAMP      0x8906
+#define SIOCGSTAMPNS    0x8907
+
+#define SIOCADDRT       0x890B
+#define SIOCDELRT       0x890C
+#define SIOCRTMSG       0x890D
+
+#define SIOCGIFNAME     0x8910
+#define SIOCSIFLINK     0x8911
+#define SIOCGIFCONF     0x8912
+#define SIOCGIFFLAGS    0x8913
+#define SIOCSIFFLAGS    0x8914
+#define SIOCGIFADDR     0x8915
+#define SIOCSIFADDR     0x8916
+#define SIOCGIFDSTADDR  0x8917
+#define SIOCSIFDSTADDR  0x8918
+#define SIOCGIFBRDADDR  0x8919
+#define SIOCSIFBRDADDR  0x891a
+#define SIOCGIFNETMASK  0x891b
+#define SIOCSIFNETMASK  0x891c
+#define SIOCGIFMETRIC   0x891d
+#define SIOCSIFMETRIC   0x891e
+#define SIOCGIFMEM      0x891f
+#define SIOCSIFMEM      0x8920
+#define SIOCGIFMTU      0x8921
+#define SIOCSIFMTU      0x8922
+#define SIOCSIFNAME     0x8923
+#define SIOCSIFHWADDR   0x8924
+#define SIOCGIFENCAP    0x8925
+#define SIOCSIFENCAP    0x8926
+#define SIOCGIFHWADDR   0x8927
+#define SIOCGIFSLAVE    0x8929
+#define SIOCSIFSLAVE    0x8930
+#define SIOCADDMULTI    0x8931
+#define SIOCDELMULTI    0x8932
+#define SIOCGIFINDEX    0x8933
+#define SIOGIFINDEX     SIOCGIFINDEX
+#define SIOCSIFPFLAGS   0x8934
+#define SIOCGIFPFLAGS   0x8935
+#define SIOCDIFADDR     0x8936
+#define SIOCSIFHWBROADCAST 0x8937
+#define SIOCGIFCOUNT    0x8938
+
+#define SIOCGIFBR       0x8940
+#define SIOCSIFBR       0x8941
+
+#define SIOCGIFTXQLEN   0x8942
+#define SIOCSIFTXQLEN   0x8943
+
+#define SIOCDARP        0x8953
+#define SIOCGARP        0x8954
+#define SIOCSARP        0x8955
+
+#define SIOCDRARP       0x8960
+#define SIOCGRARP       0x8961
+#define SIOCSRARP       0x8962
+
+#define SIOCGIFMAP      0x8970
+#define SIOCSIFMAP      0x8971
+
+#define SIOCADDDLCI     0x8980
+#define SIOCDELDLCI     0x8981
+
+#define SIOCDEVPRIVATE      0x89F0
+#define SIOCPROTOPRIVATE    0x89E0
+
 #endif
diff --git a/include/libc/libc_ioctl.h b/include/libc/libc_ioctl.h
deleted file mode 100644
index 05f0daa238..0000000000
--- a/include/libc/libc_ioctl.h
+++ /dev/null
@@ -1,229 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017-01-21     Bernard      the first version
- */
-
-#ifndef LIBC_IOCTL_H__
-#define LIBC_IOCTL_H__
-
-#define _IOC(a,b,c,d) ( ((a)<<30) | ((b)<<8) | (c) | ((d)<<16) )
-#define _IOC_NONE  0U
-#define _IOC_WRITE 1U
-#define _IOC_READ  2U
-
-#if !defined (_WIN32) && !defined (__TASKING__)
-#define _IO(a,b)    _IOC(_IOC_NONE,(a),(b),0)
-#define _IOW(a,b,c) _IOC(_IOC_WRITE,(a),(b),sizeof(c))
-#define _IOR(a,b,c) _IOC(_IOC_READ,(a),(b),sizeof(c))
-#define _IOWR(a,b,c) _IOC(_IOC_READ|_IOC_WRITE,(a),(b),sizeof(c))
-
-#define FIONREAD    _IOR('f', 127, int) /* get # bytes to read */
-#define FIONBIO     _IOW('f', 126, int) /* set/clear non-blocking i/o */
-#define FIONWRITE   _IOR('f', 121, int) /* get # bytes outstanding
-                         * in send queue. */
-#endif
-
-#define TCGETS      0x5401
-#define TCSETS      0x5402
-#define TCSETSW     0x5403
-#define TCSETSF     0x5404
-#define TCGETA      0x5405
-#define TCSETA      0x5406
-#define TCSETAW     0x5407
-#define TCSETAF     0x5408
-#define TCSBRK      0x5409
-#define TCXONC      0x540A
-#define TCFLSH      0x540B
-#define TIOCEXCL    0x540C
-#define TIOCNXCL    0x540D
-#define TIOCSCTTY   0x540E
-#define TIOCGPGRP   0x540F
-#define TIOCSPGRP   0x5410
-#define TIOCOUTQ    0x5411
-#define TIOCSTI     0x5412
-#define TIOCGWINSZ  0x5413
-#define TIOCSWINSZ  0x5414
-#define TIOCMGET    0x5415
-#define TIOCMBIS    0x5416
-#define TIOCMBIC    0x5417
-#define TIOCMSET    0x5418
-#define TIOCGSOFTCAR    0x5419
-#define TIOCSSOFTCAR    0x541A
-// #define FIONREAD 0x541B
-#define TIOCINQ     FIONREAD
-#define TIOCLINUX   0x541C
-#define TIOCCONS    0x541D
-#define TIOCGSERIAL 0x541E
-#define TIOCSSERIAL 0x541F
-#define TIOCPKT     0x5420
-// #define FIONBIO  0x5421
-#define TIOCNOTTY   0x5422
-#define TIOCSETD    0x5423
-#define TIOCGETD    0x5424
-#define TCSBRKP     0x5425
-#define TIOCSBRK    0x5427
-#define TIOCCBRK    0x5428
-#define TIOCGSID    0x5429
-#define TIOCGRS485  0x542E
-#define TIOCSRS485  0x542F
-#define TIOCGPTN    0x80045430
-#define TIOCSPTLCK  0x40045431
-#define TIOCGDEV    0x80045432
-#define TCGETX      0x5432
-#define TCSETX      0x5433
-#define TCSETXF     0x5434
-#define TCSETXW     0x5435
-#define TIOCSIG     0x40045436
-#define TIOCVHANGUP 0x5437
-#define TIOCGPKT    0x80045438
-#define TIOCGPTLCK  0x80045439
-#define TIOCGEXCL   0x80045440
-
-#define FIONCLEX    0x5450
-#define FIOCLEX     0x5451
-
-#ifndef _WIN32
-#define FIOASYNC    0x5452
-#endif
-
-#define TIOCSERCONFIG   0x5453
-#define TIOCSERGWILD    0x5454
-#define TIOCSERSWILD    0x5455
-#define TIOCGLCKTRMIOS  0x5456
-#define TIOCSLCKTRMIOS  0x5457
-#define TIOCSERGSTRUCT  0x5458
-#define TIOCSERGETLSR   0x5459
-#define TIOCSERGETMULTI 0x545A
-#define TIOCSERSETMULTI 0x545B
-
-#define TIOCMIWAIT  0x545C
-#define TIOCGICOUNT 0x545D
-#define FIOQSIZE    0x5460
-
-#define TIOCPKT_DATA         0
-#define TIOCPKT_FLUSHREAD    1
-#define TIOCPKT_FLUSHWRITE   2
-#define TIOCPKT_STOP         4
-#define TIOCPKT_START        8
-#define TIOCPKT_NOSTOP      16
-#define TIOCPKT_DOSTOP      32
-#define TIOCPKT_IOCTL       64
-
-#define TIOCSER_TEMT    0x01
-
-struct winsize {
-    unsigned short ws_row;
-    unsigned short ws_col;
-    unsigned short ws_xpixel;
-    unsigned short ws_ypixel;
-};
-
-#define TIOCM_LE        0x001
-#define TIOCM_DTR       0x002
-#define TIOCM_RTS       0x004
-#define TIOCM_ST        0x008
-#define TIOCM_SR        0x010
-#define TIOCM_CTS       0x020
-#define TIOCM_CAR       0x040
-#define TIOCM_RNG       0x080
-#define TIOCM_DSR       0x100
-#define TIOCM_CD        TIOCM_CAR
-#define TIOCM_RI        TIOCM_RNG
-#define TIOCM_OUT1      0x2000
-#define TIOCM_OUT2      0x4000
-#define TIOCM_LOOP      0x8000
-
-#define N_TTY           0
-#define N_SLIP          1
-#define N_MOUSE         2
-#define N_PPP           3
-#define N_STRIP         4
-#define N_AX25          5
-#define N_X25           6
-#define N_6PACK         7
-#define N_MASC          8
-#define N_R3964         9
-#define N_PROFIBUS_FDL  10
-#define N_IRDA          11
-#define N_SMSBLOCK      12
-#define N_HDLC          13
-#define N_SYNC_PPP      14
-#define N_HCI           15
-
-#define FIOSETOWN       0x8901
-#define SIOCSPGRP       0x8902
-#define FIOGETOWN       0x8903
-#define SIOCGPGRP       0x8904
-// #define SIOCATMARK      0x8905
-#define SIOCGSTAMP      0x8906
-#define SIOCGSTAMPNS    0x8907
-
-#define SIOCADDRT       0x890B
-#define SIOCDELRT       0x890C
-#define SIOCRTMSG       0x890D
-
-#define SIOCGIFNAME     0x8910
-#define SIOCSIFLINK     0x8911
-#define SIOCGIFCONF     0x8912
-#define SIOCGIFFLAGS    0x8913
-#define SIOCSIFFLAGS    0x8914
-#define SIOCGIFADDR     0x8915
-#define SIOCSIFADDR     0x8916
-#define SIOCGIFDSTADDR  0x8917
-#define SIOCSIFDSTADDR  0x8918
-#define SIOCGIFBRDADDR  0x8919
-#define SIOCSIFBRDADDR  0x891a
-#define SIOCGIFNETMASK  0x891b
-#define SIOCSIFNETMASK  0x891c
-#define SIOCGIFMETRIC   0x891d
-#define SIOCSIFMETRIC   0x891e
-#define SIOCGIFMEM      0x891f
-#define SIOCSIFMEM      0x8920
-#define SIOCGIFMTU      0x8921
-#define SIOCSIFMTU      0x8922
-#define SIOCSIFNAME     0x8923
-#define SIOCSIFHWADDR   0x8924
-#define SIOCGIFENCAP    0x8925
-#define SIOCSIFENCAP    0x8926
-#define SIOCGIFHWADDR   0x8927
-#define SIOCGIFSLAVE    0x8929
-#define SIOCSIFSLAVE    0x8930
-#define SIOCADDMULTI    0x8931
-#define SIOCDELMULTI    0x8932
-#define SIOCGIFINDEX    0x8933
-#define SIOGIFINDEX     SIOCGIFINDEX
-#define SIOCSIFPFLAGS   0x8934
-#define SIOCGIFPFLAGS   0x8935
-#define SIOCDIFADDR     0x8936
-#define SIOCSIFHWBROADCAST 0x8937
-#define SIOCGIFCOUNT    0x8938
-
-#define SIOCGIFBR       0x8940
-#define SIOCSIFBR       0x8941
-
-#define SIOCGIFTXQLEN   0x8942
-#define SIOCSIFTXQLEN   0x8943
-
-#define SIOCDARP        0x8953
-#define SIOCGARP        0x8954
-#define SIOCSARP        0x8955
-
-#define SIOCDRARP       0x8960
-#define SIOCGRARP       0x8961
-#define SIOCSRARP       0x8962
-
-#define SIOCGIFMAP      0x8970
-#define SIOCSIFMAP      0x8971
-
-#define SIOCADDDLCI     0x8980
-#define SIOCDELDLCI     0x8981
-
-#define SIOCDEVPRIVATE      0x89F0
-#define SIOCPROTOPRIVATE    0x89E0
-
-#endif
diff --git a/include/rtlibc.h b/include/rtlibc.h
index 50bddc6ee8..d69f3ca185 100644
--- a/include/rtlibc.h
+++ b/include/rtlibc.h
@@ -16,7 +16,6 @@
 #include "libc/libc_errno.h"
 
 #include "libc/libc_fcntl.h"
-#include "libc/libc_ioctl.h"
 #include "libc/libc_dirent.h"
 #include "libc/libc_signal.h"
 #include "libc/libc_fdset.h"
-- 
cgit v1.3.1


From 740a810274b9b9ccd74c4163fa9b11b5ee7f7926 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 12 Jun 2021 18:11:51 +0800
Subject: [errno][libc] 解决sys头文件在libc未开启时的引入问题
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/drivers/src/pipe.c                        | 11 ++++++-----
 components/finsh/shell.c                             |  2 +-
 components/libc/compilers/common/SConscript          | 13 +++++--------
 components/libc/compilers/common/none-gcc/SConscript |  6 ++++--
 components/libc/compilers/newlib/minilib.c           | 14 ++++++--------
 5 files changed, 22 insertions(+), 24 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/drivers/src/pipe.c b/components/drivers/src/pipe.c
index 236c1ffec7..09448a8e9e 100644
--- a/components/drivers/src/pipe.c
+++ b/components/drivers/src/pipe.c
@@ -11,8 +11,9 @@
 #include <rthw.h>
 #include <rtdevice.h>
 #include <stdint.h>
+#include <sys/errno.h>
 
-#if defined(RT_USING_POSIX)
+#ifdef RT_USING_POSIX
 #include <dfs_file.h>
 #include <dfs_posix.h>
 #include <dfs_poll.h>
@@ -374,7 +375,7 @@ rt_size_t rt_pipe_read(rt_device_t device, rt_off_t pos, void *buffer, rt_size_t
 
     if (device == RT_NULL)
     {
-        rt_set_errno(-EINVAL);
+        rt_set_errno(EINVAL);
         return 0;
     }
     if (count == 0) return 0;
@@ -402,7 +403,7 @@ rt_size_t rt_pipe_write(rt_device_t device, rt_off_t pos, const void *buffer, rt
 
     if (device == RT_NULL)
     {
-        rt_set_errno(-EINVAL);
+        rt_set_errno(EINVAL);
         return 0;
     }
     if (count == 0) return 0;
@@ -516,12 +517,12 @@ int rt_pipe_delete(const char *name)
         }
         else
         {
-            result = -ENODEV;
+            result = -RT_EINVAL;
         }
     }
     else
     {
-        result = -ENODEV;
+        result = -RT_EINVAL;
     }
 
     return result;
diff --git a/components/finsh/shell.c b/components/finsh/shell.c
index 6f1133bf3b..a749660629 100644
--- a/components/finsh/shell.c
+++ b/components/finsh/shell.c
@@ -97,7 +97,7 @@ int finsh_set_prompt(const char * prompt)
 }
 #endif /* RT_USING_HEAP */
 
-#if defined(RT_USING_DFS)
+#ifdef RT_USING_DFS
 #include <dfs_posix.h>
 #endif /* RT_USING_DFS */
 
diff --git a/components/libc/compilers/common/SConscript b/components/libc/compilers/common/SConscript
index 039e53a0b3..2ebfc36c4e 100644
--- a/components/libc/compilers/common/SConscript
+++ b/components/libc/compilers/common/SConscript
@@ -9,20 +9,17 @@ CPPPATH = [cwd]
 
 if GetDepend('RT_USING_LIBC'):
     src += Glob('*.c')
-else:
-    if GetDepend('RT_LIBC_USING_TIME'):
-        src += ['time.c']
-
-if GetDepend('RT_USING_POSIX') == False:
-    SrcRemove(src, ['unistd.c'])
+    if GetDepend('RT_USING_POSIX') == False:
+        SrcRemove(src, ['unistd.c'])
+elif GetDepend('RT_LIBC_USING_TIME'):
+    src += ['time.c']
 
 if rtconfig.CROSS_TOOL == 'keil':
     CPPDEFINES = ['__CLK_TCK=RT_TICK_PER_SECOND']
 else:
     CPPDEFINES = []
 
-if GetDepend('RT_USING_LIBC') or GetDepend('RT_LIBC_USING_TIME'):
-    group = DefineGroup('libc', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
+group = DefineGroup('libc', src, depend = [], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
 
 list = os.listdir(cwd)
 for d in list:
diff --git a/components/libc/compilers/common/none-gcc/SConscript b/components/libc/compilers/common/none-gcc/SConscript
index c5838f8949..c766c8f82d 100644
--- a/components/libc/compilers/common/none-gcc/SConscript
+++ b/components/libc/compilers/common/none-gcc/SConscript
@@ -6,8 +6,10 @@ src   = []
 cwd   = GetCurrentDir()
 CPPPATH = [cwd]
 group = []
-src += Glob('*.c')
+
+if GetDepend('RT_USING_LIBC'):
+    src += Glob('*.c')
 
 if rtconfig.PLATFORM != 'gcc' or rtconfig.ARCH == 'sim':
-    group = DefineGroup('libc', src, depend = ['RT_USING_LIBC'], CPPPATH = CPPPATH)
+    group = DefineGroup('libc', src, depend = [], CPPPATH = CPPPATH)
 Return('group')
diff --git a/components/libc/compilers/newlib/minilib.c b/components/libc/compilers/newlib/minilib.c
index f6df38f67b..612554ca66 100644
--- a/components/libc/compilers/newlib/minilib.c
+++ b/components/libc/compilers/newlib/minilib.c
@@ -12,8 +12,9 @@
 #include <rtthread.h>
 
 #ifdef RT_USING_HEAP /* Memory routine */
-void *
-_malloc_r (struct _reent *ptr, size_t size)
+#include <sys/errno.h>
+
+void * _malloc_r (struct _reent *ptr, size_t size)
 {
     void* result;
 
@@ -26,8 +27,7 @@ _malloc_r (struct _reent *ptr, size_t size)
     return result;
 }
 
-void *
-_realloc_r (struct _reent *ptr, void *old, size_t newlen)
+void * _realloc_r (struct _reent *ptr, void *old, size_t newlen)
 {
     void* result;
 
@@ -53,15 +53,13 @@ void *_calloc_r (struct _reent *ptr, size_t size, size_t len)
     return result;
 }
 
-void
-_free_r (struct _reent *ptr, void *addr)
+void _free_r (struct _reent *ptr, void *addr)
 {
     rt_free (addr);
 }
 
 #else
-void *
-_sbrk_r(struct _reent *ptr, ptrdiff_t incr)
+void * _sbrk_r(struct _reent *ptr, ptrdiff_t incr)
 {
     return RT_NULL;
 }
-- 
cgit v1.3.1


From 5bb6e86cf5573eac5395b2c31f7fb0650382605e Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 13 Jun 2021 17:16:03 +0800
Subject: [sys/errno.h] 修复armclang支持问题
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/none-gcc/sys/errno.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/none-gcc/sys/errno.h b/components/libc/compilers/common/none-gcc/sys/errno.h
index 773c2cd7d3..ad3614024d 100644
--- a/components/libc/compilers/common/none-gcc/sys/errno.h
+++ b/components/libc/compilers/common/none-gcc/sys/errno.h
@@ -10,7 +10,7 @@
 #ifndef _SYS_ERRNO_H
 #define _SYS_ERRNO_H
 
-#if defined(__CC_ARM)
+#if defined(__ARMCC_VERSION)
 /*
 defined in armcc/errno.h
 
@@ -37,7 +37,7 @@ defined in armcc/errno.h
 #define ERROR_BASE_NO    0
 #endif
 
-#if defined(__CC_ARM) || defined(__IAR_SYSTEMS_ICC__)
+#if defined(__ARMCC_VERSION) || defined(__IAR_SYSTEMS_ICC__)
 #include <errno.h>
 #define EPERM            (ERROR_BASE_NO + 1)
 #define ENOENT           (ERROR_BASE_NO + 2)
-- 
cgit v1.3.1


From 66b7289ee75653f6024ca3b9c0bdff96fe0bc046 Mon Sep 17 00:00:00 2001
From: guozhanxin <guozhanxin@rt-thread.com>
Date: Tue, 15 Jun 2021 18:29:58 +0800
Subject: [update] usleep supports calling in interrupts.

---
 components/libc/compilers/common/unistd.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/unistd.c b/components/libc/compilers/common/unistd.c
index 6c81fc7662..4385643f31 100644
--- a/components/libc/compilers/common/unistd.c
+++ b/components/libc/compilers/common/unistd.c
@@ -55,7 +55,14 @@ RTM_EXPORT(sleep);
 
 int usleep(useconds_t usec)
 {
-    rt_thread_mdelay(usec / 1000u);
+    if (rt_thread_self() != RT_NULL)
+    {
+        rt_thread_mdelay(usec / 1000u);
+    }
+    else
+    {
+        rt_hw_us_delay(usec / 1000u);
+    }
     rt_hw_us_delay(usec % 1000u);
     return 0;
 }
-- 
cgit v1.3.1


From 6697fa0ff54219b6d0b4f65dd28cdcdd22e0158c Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Wed, 16 Jun 2021 12:15:24 +0800
Subject: [sleep] 加入调度器尚未运行时的延时情况
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/unistd.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/unistd.c b/components/libc/compilers/common/unistd.c
index 4385643f31..9a457c4200 100644
--- a/components/libc/compilers/common/unistd.c
+++ b/components/libc/compilers/common/unistd.c
@@ -37,19 +37,26 @@ RTM_EXPORT(isatty);
 
 char *ttyname(int fd)
 {
-    return "/dev/tty"; /*TODO: need to add more specific*/
+    return "/dev/tty"; /* TODO: need to add more specific */
 }
 RTM_EXPORT(ttyname);
 
 unsigned int sleep(unsigned int seconds)
 {
-    rt_tick_t delta_tick;
-
-    delta_tick = rt_tick_get();
-    rt_thread_delay(seconds * RT_TICK_PER_SECOND);
-    delta_tick = rt_tick_get() - delta_tick;
+    if (rt_thread_self() != RT_NULL)
+    {
+        rt_thread_delay(seconds * RT_TICK_PER_SECOND);
+    }
+    else /* scheduler has not run yet */
+    {
+        while(seconds > 0)
+        {
+            rt_hw_us_delay(1000000u);
+            seconds --;
+        }
+    }
 
-    return seconds - delta_tick/RT_TICK_PER_SECOND;
+    return 0;
 }
 RTM_EXPORT(sleep);
 
@@ -59,11 +66,12 @@ int usleep(useconds_t usec)
     {
         rt_thread_mdelay(usec / 1000u);
     }
-    else
+    else  /* scheduler has not run yet */
     {
         rt_hw_us_delay(usec / 1000u);
     }
     rt_hw_us_delay(usec % 1000u);
+
     return 0;
 }
 RTM_EXPORT(usleep);
-- 
cgit v1.3.1


From 56e3571e8a8ede72b9aec00c968ace7b2bbe548c Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Wed, 16 Jun 2021 14:02:43 +0800
Subject: implement delay.c/.h

---
 bsp/qemu-vexpress-a9/drivers/board.c        |  5 ++++
 bsp/qemu-vexpress-a9/drivers/drv_smc911x.c  | 10 -------
 components/libc/compilers/common/SConscript |  2 +-
 components/libc/compilers/common/delay.c    | 41 +++++++++++++++++++++++++++++
 components/libc/compilers/common/delay.h    | 19 +++++++++++++
 5 files changed, 66 insertions(+), 11 deletions(-)
 create mode 100644 components/libc/compilers/common/delay.c
 create mode 100644 components/libc/compilers/common/delay.h

(limited to 'components/libc/compilers')

diff --git a/bsp/qemu-vexpress-a9/drivers/board.c b/bsp/qemu-vexpress-a9/drivers/board.c
index e236c68b80..84af3c1ccd 100644
--- a/bsp/qemu-vexpress-a9/drivers/board.c
+++ b/bsp/qemu-vexpress-a9/drivers/board.c
@@ -55,3 +55,8 @@ void rt_hw_board_init(void)
     rt_hw_ipi_handler_install(RT_SCHEDULE_IPI, rt_scheduler_ipi_handler);
 #endif
 }
+
+void rt_hw_us_delay(rt_uint32_t us)
+{
+
+}
diff --git a/bsp/qemu-vexpress-a9/drivers/drv_smc911x.c b/bsp/qemu-vexpress-a9/drivers/drv_smc911x.c
index 2b2253328d..9d52b258af 100644
--- a/bsp/qemu-vexpress-a9/drivers/drv_smc911x.c
+++ b/bsp/qemu-vexpress-a9/drivers/drv_smc911x.c
@@ -33,16 +33,6 @@ struct eth_device_smc911x
 };
 static struct eth_device_smc911x _emac;
 
-int udelay(int value)
-{
-    return 0;
-}
-
-int mdelay(int value)
-{
-    return 0;
-}
-
 #if defined (CONFIG_SMC911X_32_BIT)
 rt_inline uint32_t smc911x_reg_read(struct eth_device_smc911x *dev, uint32_t offset)
 {
diff --git a/components/libc/compilers/common/SConscript b/components/libc/compilers/common/SConscript
index 2ebfc36c4e..b1982aa329 100644
--- a/components/libc/compilers/common/SConscript
+++ b/components/libc/compilers/common/SConscript
@@ -10,7 +10,7 @@ CPPPATH = [cwd]
 if GetDepend('RT_USING_LIBC'):
     src += Glob('*.c')
     if GetDepend('RT_USING_POSIX') == False:
-        SrcRemove(src, ['unistd.c'])
+        SrcRemove(src, ['unistd.c', 'delay.c'])
 elif GetDepend('RT_LIBC_USING_TIME'):
     src += ['time.c']
 
diff --git a/components/libc/compilers/common/delay.c b/components/libc/compilers/common/delay.c
new file mode 100644
index 0000000000..4666258d3b
--- /dev/null
+++ b/components/libc/compilers/common/delay.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-05-07     Meco Man     first Version
+ */
+#include <rtthread.h>
+#include <rthw.h>
+
+void msleep(unsigned int msecs)
+{
+    rt_thread_mdelay(msecs);
+}
+RTM_EXPORT(msleep);
+
+void ssleep(unsigned int seconds)
+{
+    msleep(seconds * 1000);
+}
+RTM_EXPORT(ssleep);
+
+void mdelay(unsigned long msecs)
+{
+    rt_hw_us_delay(msecs * 1000);
+}
+RTM_EXPORT(mdelay);
+
+void udelay(unsigned long usecs)
+{
+    rt_hw_us_delay(usecs);
+}
+RTM_EXPORT(udelay);
+
+void ndelay(unsigned long nsecs)
+{
+    rt_hw_us_delay(1);
+}
+RTM_EXPORT(ndelay);
diff --git a/components/libc/compilers/common/delay.h b/components/libc/compilers/common/delay.h
new file mode 100644
index 0000000000..f32708af55
--- /dev/null
+++ b/components/libc/compilers/common/delay.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-05-07     Meco Man     first Version
+ */
+#ifndef __DELAY_H__
+#define __DELAY_H__
+
+void msleep(unsigned int msecs);
+void ssleep(unsigned int seconds);
+void mdelay(unsigned long msecs);
+void udelay(unsigned long usecs);
+void ndelay(unsigned long nsecs);
+
+#endif
-- 
cgit v1.3.1


From fa3d95bb1c46c36023341e43f6c328c9a2077606 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Mon, 21 Jun 2021 21:15:22 +0800
Subject: [libc][syscall]整理函数格式
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/newlib/syscalls.c | 72 ++++++++++-------------------
 1 file changed, 24 insertions(+), 48 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/newlib/syscalls.c b/components/libc/compilers/newlib/syscalls.c
index 7c5d51eca6..e01dc59eb6 100644
--- a/components/libc/compilers/newlib/syscalls.c
+++ b/components/libc/compilers/newlib/syscalls.c
@@ -29,21 +29,18 @@
 /* Reentrant versions of system calls.  */
 
 #ifndef _REENT_ONLY
-int *
-__errno ()
+int *__errno ()
 {
   return _rt_errno();
 }
 #endif
 
-int
-_getpid_r(struct _reent *ptr)
+int _getpid_r(struct _reent *ptr)
 {
     return 0;
 }
 
-int
-_close_r(struct _reent *ptr, int fd)
+int _close_r(struct _reent *ptr, int fd)
 {
 #ifndef RT_USING_DFS
     /* return "not supported" */
@@ -54,40 +51,35 @@ _close_r(struct _reent *ptr, int fd)
 #endif
 }
 
-int
-_execve_r(struct _reent *ptr, const char * name, char *const *argv, char *const *env)
+int _execve_r(struct _reent *ptr, const char * name, char *const *argv, char *const *env)
 {
     /* return "not supported" */
     ptr->_errno = ENOTSUP;
     return -1;
 }
 
-int
-_fcntl_r(struct _reent *ptr, int fd, int cmd, int arg)
+int _fcntl_r(struct _reent *ptr, int fd, int cmd, int arg)
 {
     /* return "not supported" */
     ptr->_errno = ENOTSUP;
     return -1;
 }
 
-int
-_fork_r(struct _reent *ptr)
+int _fork_r(struct _reent *ptr)
 {
     /* return "not supported" */
     ptr->_errno = ENOTSUP;
     return -1;
 }
 
-int
-_fstat_r(struct _reent *ptr, int fd, struct stat *pstat)
+int _fstat_r(struct _reent *ptr, int fd, struct stat *pstat)
 {
     /* return "not supported" */
     ptr->_errno = ENOTSUP;
     return -1;
 }
 
-int
-_isatty_r(struct _reent *ptr, int fd)
+int _isatty_r(struct _reent *ptr, int fd)
 {
     if (fd >=0 && fd < 3)
     {
@@ -99,24 +91,21 @@ _isatty_r(struct _reent *ptr, int fd)
     }
 }
 
-int
-_kill_r(struct _reent *ptr, int pid, int sig)
+int _kill_r(struct _reent *ptr, int pid, int sig)
 {
     /* return "not supported" */
     ptr->_errno = ENOTSUP;
     return -1;
 }
 
-int
-_link_r(struct _reent *ptr, const char *old, const char *new)
+int _link_r(struct _reent *ptr, const char *old, const char *new)
 {
     /* return "not supported" */
     ptr->_errno = ENOTSUP;
     return -1;
 }
 
-_off_t
-_lseek_r(struct _reent *ptr, int fd, _off_t pos, int whence)
+_off_t _lseek_r(struct _reent *ptr, int fd, _off_t pos, int whence)
 {
 #ifndef RT_USING_DFS
     /* return "not supported" */
@@ -130,8 +119,7 @@ _lseek_r(struct _reent *ptr, int fd, _off_t pos, int whence)
 #endif
 }
 
-int
-_mkdir_r(struct _reent *ptr, const char *name, int mode)
+int _mkdir_r(struct _reent *ptr, const char *name, int mode)
 {
 #ifndef RT_USING_DFS
     /* return "not supported" */
@@ -145,8 +133,7 @@ _mkdir_r(struct _reent *ptr, const char *name, int mode)
 #endif
 }
 
-int
-_open_r(struct _reent *ptr, const char *file, int flags, int mode)
+int _open_r(struct _reent *ptr, const char *file, int flags, int mode)
 {
 #ifndef RT_USING_DFS
     /* return "not supported" */
@@ -160,8 +147,7 @@ _open_r(struct _reent *ptr, const char *file, int flags, int mode)
 #endif
 }
 
-_ssize_t
-_read_r(struct _reent *ptr, int fd, void *buf, size_t nbytes)
+_ssize_t _read_r(struct _reent *ptr, int fd, void *buf, size_t nbytes)
 {
 #ifndef RT_USING_DFS
     /* return "not supported" */
@@ -175,8 +161,7 @@ _read_r(struct _reent *ptr, int fd, void *buf, size_t nbytes)
 #endif
 }
 
-int
-_rename_r(struct _reent *ptr, const char *old, const char *new)
+int _rename_r(struct _reent *ptr, const char *old, const char *new)
 {
 #ifndef RT_USING_DFS
     /* return "not supported" */
@@ -190,8 +175,7 @@ _rename_r(struct _reent *ptr, const char *old, const char *new)
 #endif
 }
 
-int
-_stat_r(struct _reent *ptr, const char *file, struct stat *pstat)
+int _stat_r(struct _reent *ptr, const char *file, struct stat *pstat)
 {
 #ifndef RT_USING_DFS
     /* return "not supported" */
@@ -205,8 +189,7 @@ _stat_r(struct _reent *ptr, const char *file, struct stat *pstat)
 #endif
 }
 
-int
-_unlink_r(struct _reent *ptr, const char *file)
+int _unlink_r(struct _reent *ptr, const char *file)
 {
 #ifndef RT_USING_DFS
     /* return "not supported" */
@@ -217,16 +200,14 @@ _unlink_r(struct _reent *ptr, const char *file)
 #endif
 }
 
-int
-_wait_r(struct _reent *ptr, int *status)
+int _wait_r(struct _reent *ptr, int *status)
 {
     /* return "not supported" */
     ptr->_errno = ENOTSUP;
     return -1;
 }
 
-_ssize_t
-_write_r(struct _reent *ptr, int fd, const void *buf, size_t nbytes)
+_ssize_t _write_r(struct _reent *ptr, int fd, const void *buf, size_t nbytes)
 {
 #ifndef RT_USING_DFS
 #ifdef RT_USING_DEVICE
@@ -253,8 +234,7 @@ _write_r(struct _reent *ptr, int fd, const void *buf, size_t nbytes)
 }
 
 #ifdef RT_USING_HEAP /* Memory routine */
-void *
-_malloc_r (struct _reent *ptr, size_t size)
+void *_malloc_r (struct _reent *ptr, size_t size)
 {
     void* result;
 
@@ -267,8 +247,7 @@ _malloc_r (struct _reent *ptr, size_t size)
     return result;
 }
 
-void *
-_realloc_r (struct _reent *ptr, void *old, size_t newlen)
+void *_realloc_r (struct _reent *ptr, void *old, size_t newlen)
 {
     void* result;
 
@@ -294,8 +273,7 @@ void *_calloc_r (struct _reent *ptr, size_t size, size_t len)
     return result;
 }
 
-void
-_free_r (struct _reent *ptr, void *addr)
+void _free_r (struct _reent *ptr, void *addr)
 {
     rt_free (addr);
 }
@@ -309,16 +287,14 @@ _sbrk_r(struct _reent *ptr, ptrdiff_t incr)
 #endif /*RT_USING_HEAP*/
 
 /* for exit() and abort() */
-__attribute__ ((noreturn)) void
-_exit (int status)
+__attribute__ ((noreturn)) void _exit (int status)
 {
     extern void __rt_libc_exit(int status);
     __rt_libc_exit(status);
     while(1);
 }
 
-void
-_system(const char *s)
+void _system(const char *s)
 {
     extern int __rt_libc_system(const char *string);
     __rt_libc_system(s);
-- 
cgit v1.3.1


From a2a7f3c2d926388c71d0be5fca0309bfef81e523 Mon Sep 17 00:00:00 2001
From: iysheng <iysheng@163.com>
Date: Mon, 5 Jul 2021 11:34:11 +0800
Subject: [components][rtc] Add RTC framework V2.0 to simplify RTC registration
 process

---
 components/drivers/include/drivers/rtc.h      |   3 +
 components/drivers/include/drivers/rtc_core.h |  43 ++++++++++
 components/drivers/rtc/SConscript             |   4 +-
 components/drivers/rtc/rtc.c                  |   1 +
 components/drivers/rtc/rtc_core.c             | 117 ++++++++++++++++++++++++++
 components/libc/compilers/common/time.c       |   9 ++
 include/rtdef.h                               |   6 --
 7 files changed, 175 insertions(+), 8 deletions(-)
 create mode 100644 components/drivers/include/drivers/rtc_core.h
 create mode 100644 components/drivers/rtc/rtc_core.c

(limited to 'components/libc/compilers')

diff --git a/components/drivers/include/drivers/rtc.h b/components/drivers/include/drivers/rtc.h
index 4845937113..3a318357da 100644
--- a/components/drivers/include/drivers/rtc.h
+++ b/components/drivers/include/drivers/rtc.h
@@ -11,6 +11,9 @@
 #ifndef __RTC_H__
 #define __RTC_H__
 
+#include <rtconfig.h>
+#include <drivers/rtc_core.h>
+
 rt_err_t set_date(rt_uint32_t year, rt_uint32_t month, rt_uint32_t day);
 rt_err_t set_time(rt_uint32_t hour, rt_uint32_t minute, rt_uint32_t second);
 
diff --git a/components/drivers/include/drivers/rtc_core.h b/components/drivers/include/drivers/rtc_core.h
new file mode 100644
index 0000000000..c093a1d749
--- /dev/null
+++ b/components/drivers/include/drivers/rtc_core.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-06-11     iysheng      first version.
+ */
+
+#ifndef __RTC_CORE_H__
+#define __RTC_CORE_H__
+
+#include <rtthread.h>
+
+#define RT_DEVICE_CTRL_RTC_GET_TIME     0x10            /**< get second time */
+#define RT_DEVICE_CTRL_RTC_SET_TIME     0x11            /**< set second time */
+#define RT_DEVICE_CTRL_RTC_GET_TIME_US  0x12            /**< get microsecond time */
+#define RT_DEVICE_CTRL_RTC_SET_TIME_US  0x13            /**< set microsecond time */
+#define RT_DEVICE_CTRL_RTC_GET_ALARM    0x14            /**< get alarm */
+#define RT_DEVICE_CTRL_RTC_SET_ALARM    0x15            /**< set alarm */
+
+struct rt_rtc_ops
+{
+    rt_err_t (*init)(void);
+    rt_err_t (*get_secs)(void *arg);
+    rt_err_t (*set_secs)(void *arg);
+    rt_err_t (*get_alarm)(void *arg);
+    rt_err_t (*set_alarm)(void *arg);
+};
+
+typedef struct rt_rtc_device
+{
+    struct rt_device parent;
+    const struct rt_rtc_ops *ops;
+} rt_rtc_dev_t;
+
+rt_err_t rt_rtc_dev_register(rt_rtc_dev_t *rtc,
+                            const char    *name,
+                            rt_uint32_t    flag,
+                            void          *data);
+
+#endif /* __RTC_CORE_H__ */
diff --git a/components/drivers/rtc/SConscript b/components/drivers/rtc/SConscript
index e1f8f433c1..b922db70c2 100644
--- a/components/drivers/rtc/SConscript
+++ b/components/drivers/rtc/SConscript
@@ -13,7 +13,7 @@ CPPPATH = [cwd + '/../include']
 group = []
 
 if GetDepend(['RT_USING_RTC']):
-    src = src + rtc
+    src = src + ['rtc.c', 'rtc_core.c']
     if GetDepend(['RT_USING_ALARM']): 
         src = src + rtc_alarm
     if GetDepend(['RT_USING_SOFT_RTC']): 
@@ -21,4 +21,4 @@ if GetDepend(['RT_USING_RTC']):
 
 group = DefineGroup('DeviceDrivers', src, depend = ['RT_USING_RTC'], CPPPATH = CPPPATH)
 
-Return('group')
\ No newline at end of file
+Return('group')
diff --git a/components/drivers/rtc/rtc.c b/components/drivers/rtc/rtc.c
index 98b60f9f95..2b9397da90 100644
--- a/components/drivers/rtc/rtc.c
+++ b/components/drivers/rtc/rtc.c
@@ -14,6 +14,7 @@
 #include <sys/time.h>
 #include <string.h>
 #include <rtthread.h>
+#include <drivers/rtc.h>
 
 #ifdef RT_USING_RTC
 
diff --git a/components/drivers/rtc/rtc_core.c b/components/drivers/rtc/rtc_core.c
new file mode 100644
index 0000000000..ada0ed283b
--- /dev/null
+++ b/components/drivers/rtc/rtc_core.c
@@ -0,0 +1,117 @@
+/*
+ * COPYRIGHT (C) 2011-2021, Real-Thread Information Technology Ltd
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-06-11     iysheng      first version.
+ */
+
+#include <drivers/rtc_core.h>
+
+#define TRY_DO_RTC_FUNC(rt_rtc_dev, func_name, args) \
+    rt_rtc_dev->ops->func_name ?  rt_rtc_dev->ops->func_name(args) : -RT_EINVAL;
+
+/*
+ * This function initializes rtc_core
+ */
+static rt_err_t rt_rtc_core_init(struct rt_device *dev)
+{
+    rt_rtc_dev_t *rtc_core;
+
+    RT_ASSERT(dev != RT_NULL);
+    rtc_core = (rt_rtc_dev_t *)dev;
+    if (rtc_core->ops->init)
+    {
+        return (rtc_core->ops->init());
+    }
+
+    return (-RT_ENOSYS);
+}
+
+static rt_err_t rt_rtc_core_open(struct rt_device *dev, rt_uint16_t oflag)
+{
+    return (RT_EOK);
+}
+
+static rt_err_t rt_rtc_core_close(struct rt_device *dev)
+{
+    /* Add close member function in rt_rtc_ops when need,
+     * then call that function here.
+     * */
+    return (RT_EOK);
+}
+
+static rt_err_t rt_rtc_core_control(struct rt_device *dev,
+                                    int              cmd,
+                                    void             *args)
+{
+    rt_rtc_dev_t *rtc_core;
+    rt_err_t ret = -RT_EINVAL;
+
+    RT_ASSERT(dev != RT_NULL);
+    rtc_core = (rt_rtc_dev_t *)dev;
+
+    switch (cmd)
+    {
+        case RT_DEVICE_CTRL_RTC_GET_TIME:
+            ret = TRY_DO_RTC_FUNC(rtc_core, get_secs, args);
+            break;
+        case RT_DEVICE_CTRL_RTC_SET_TIME:
+            ret = TRY_DO_RTC_FUNC(rtc_core, set_secs, args);
+            break;
+        case RT_DEVICE_CTRL_RTC_GET_ALARM:
+            ret = TRY_DO_RTC_FUNC(rtc_core, get_alarm, args);
+            break;
+        case RT_DEVICE_CTRL_RTC_SET_ALARM:
+            ret = TRY_DO_RTC_FUNC(rtc_core, set_alarm, args);
+            break;
+        default:
+            break;
+    }
+
+    return ret;
+}
+#ifdef RT_USING_DEVICE_OPS
+const static struct rt_device_ops rtc_core_ops =
+{
+    rt_rtc_core_init,
+    rt_rtc_core_open,
+    rt_rtc_core_close,
+    RT_NULL,
+    RT_NULL,
+    rt_rtc_core_control,
+};
+#endif
+
+rt_err_t rt_rtc_dev_register(rt_rtc_dev_t *rtc,
+                            const char    *name,
+                            rt_uint32_t    flag,
+                            void          *data)
+{
+    struct rt_device *device;
+    RT_ASSERT(rtc != RT_NULL);
+
+    device = &(rtc->parent);
+
+    device->type        = RT_Device_Class_RTC;
+    device->rx_indicate = RT_NULL;
+    device->tx_complete = RT_NULL;
+
+#ifdef RT_USING_DEVICE_OPS
+    device->ops         = &rtc_core_ops;
+#else
+    device->init        = rt_rtc_core_init;
+    device->open        = rt_rtc_core_open;
+    device->close       = rt_rtc_core_close;
+    device->read        = RT_NULL;
+    device->write       = RT_NULL;
+    device->control     = rt_rtc_core_control;
+#endif
+    device->user_data   = data;
+
+    /* register a character device */
+    return rt_device_register(device, name, flag);
+}
+
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index deda18a560..e13f81c2f7 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -473,12 +473,17 @@ static int clock_time_system_init()
     rt_device_t device;
 
     time = 0;
+
+#ifdef RT_USING_RTC
     device = rt_device_find("rtc");
     if (device != RT_NULL)
     {
         /* get realtime seconds */
         rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time);
     }
+#else
+    LOG_W("Cannot find a RTC device to provide time!");
+#endif
 
     /* get tick */
     tick = rt_tick_get();
@@ -591,6 +596,7 @@ int clock_settime(clockid_t clockid, const struct timespec *tp)
     _timevalue.tv_usec = MICROSECOND_PER_SECOND - (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
     _timevalue.tv_sec = second - tick/RT_TICK_PER_SECOND - 1;
 
+#ifdef RT_USING_RTC
     /* update for RTC device */
     device = rt_device_find("rtc");
     if (device != RT_NULL)
@@ -599,6 +605,9 @@ int clock_settime(clockid_t clockid, const struct timespec *tp)
         rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &second);
     }
     else
+#else
+    LOG_W("Cannot find a RTC device to save time!");
+#endif
         return -1;
 
     return 0;
diff --git a/include/rtdef.h b/include/rtdef.h
index 111ac4a12c..2b4750330f 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -962,12 +962,6 @@ enum rt_device_class_type
 #define RT_DEVICE_CTRL_BLK_AUTOREFRESH  0x13            /**< block device : enter/exit auto refresh mode */
 #define RT_DEVICE_CTRL_NETIF_GETMAC     0x10            /**< get mac address */
 #define RT_DEVICE_CTRL_MTD_FORMAT       0x10            /**< format a MTD device */
-#define RT_DEVICE_CTRL_RTC_GET_TIME     0x10            /**< get second time */
-#define RT_DEVICE_CTRL_RTC_SET_TIME     0x11            /**< set second time */
-#define RT_DEVICE_CTRL_RTC_GET_TIME_US  0x12            /**< get microsecond time */
-#define RT_DEVICE_CTRL_RTC_SET_TIME_US  0x13            /**< set microsecond time */
-#define RT_DEVICE_CTRL_RTC_GET_ALARM    0x14            /**< get alarm */
-#define RT_DEVICE_CTRL_RTC_SET_ALARM    0x15            /**< set alarm */
 
 typedef struct rt_device *rt_device_t;
 
-- 
cgit v1.3.1


From 0f48449b5e326f4f66e443cbd1a0393ea00433e4 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sun, 18 Jul 2021 14:34:35 +0800
Subject: [timezone] implement timezone

---
 components/libc/Kconfig                     |  4 +--
 components/libc/compilers/common/sys/time.h |  7 +++++
 components/libc/compilers/common/time.c     | 41 +++++++++++++++++++++++------
 3 files changed, 42 insertions(+), 10 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/Kconfig b/components/libc/Kconfig
index a89b252caa..37a98ba836 100644
--- a/components/libc/Kconfig
+++ b/components/libc/Kconfig
@@ -59,9 +59,9 @@ if RT_USING_LIBC != y
     default y
 endif
 
-config RT_LIBC_FIXED_TIMEZONE
+config RT_LIBC_DEFAULT_TIMEZONE
     depends on (RT_LIBC_USING_TIME || RT_USING_LIBC)
-    int "Manually set a fixed time zone (UTC+)"
+    int "Set the default time zone (UTC+)"
     range -12 12
     default 8
 
diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
index bb1a9c96fd..4ca665c536 100644
--- a/components/libc/compilers/common/sys/time.h
+++ b/components/libc/compilers/common/sys/time.h
@@ -12,6 +12,7 @@
 #define _SYS_TIME_H_
 
 #include <rtconfig.h>
+#include <rtdef.h>
 #include <time.h>
 
 #ifdef __cplusplus
@@ -98,6 +99,12 @@ int clock_settime (clockid_t clockid, const struct timespec *tp);
 int clock_time_to_tick(const struct timespec *time);
 #endif /* RT_USING_POSIX */
 
+
+/* timezone APIs (Not standard LIBC APIs) */
+void rt_tz_set(rt_int8_t tz);
+rt_int8_t rt_tz_get(void);
+rt_int8_t rt_tz_is_dst(void);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index e79a22b9db..8f4856a330 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -18,6 +18,7 @@
  * 2021-02-12     Meco Man     move all of the functions located in <clock_time.c> to this file
  * 2021-03-15     Meco Man     fixed a bug of leaking memory in asctime()
  * 2021-05-01     Meco Man     support fixed timezone
+ * 2021-07-21     Meco Man     implement that change/set timezone APIs
  */
 
 #include "sys/time.h"
@@ -32,10 +33,6 @@
 #define DBG_LVL    DBG_INFO
 #include <rtdbg.h>
 
-#ifndef RT_LIBC_FIXED_TIMEZONE
-#define RT_LIBC_FIXED_TIMEZONE 8 /* UTC+8 */
-#endif
-
 /* seconds per day */
 #define SPD 24*60*60
 
@@ -202,7 +199,7 @@ struct tm *gmtime_r(const time_t *timep, struct tm *r)
     r->tm_mon = i;
     r->tm_mday += work - __spm[i];
 
-    r->tm_isdst = 0;
+    r->tm_isdst = rt_tz_is_dst();
     return r;
 }
 RTM_EXPORT(gmtime_r);
@@ -218,7 +215,7 @@ struct tm* localtime_r(const time_t* t, struct tm* r)
 {
     time_t local_tz;
 
-    local_tz = *t + RT_LIBC_FIXED_TIMEZONE * 3600;
+    local_tz = *t + rt_tz_get() * 3600;
     return gmtime_r(&local_tz, r);
 }
 RTM_EXPORT(localtime_r);
@@ -235,7 +232,7 @@ time_t mktime(struct tm * const t)
     time_t timestamp;
 
     timestamp = timegm(t);
-    timestamp = timestamp - 3600 * RT_LIBC_FIXED_TIMEZONE;
+    timestamp = timestamp - 3600 * rt_tz_get();
     return timestamp;
 }
 RTM_EXPORT(mktime);
@@ -426,7 +423,7 @@ int gettimeofday(struct timeval *tv, struct timezone *tz)
     if(tz != RT_NULL)
     {
         tz->tz_dsttime = DST_NONE;
-        tz->tz_minuteswest = -(RT_LIBC_FIXED_TIMEZONE * 60);
+        tz->tz_minuteswest = -(rt_tz_get() * 60);
     }
 
     if (tv != RT_NULL && get_timeval(tv) == RT_EOK)
@@ -651,3 +648,31 @@ int clock_time_to_tick(const struct timespec *time)
 RTM_EXPORT(clock_time_to_tick);
 
 #endif /* RT_USING_POSIX */
+
+
+/* timezone APIs (Not standard LIBC APIs) */
+#ifndef RT_LIBC_DEFAULT_TIMEZONE
+#define RT_LIBC_DEFAULT_TIMEZONE    8
+#endif
+
+#include <rthw.h>
+
+volatile static rt_int8_t rt_current_timezone = RT_LIBC_DEFAULT_TIMEZONE;
+
+void rt_tz_set(rt_int8_t tz)
+{
+    register rt_base_t level;
+    level = rt_hw_interrupt_disable();
+    rt_current_timezone = tz;
+    rt_hw_interrupt_enable(level);
+}
+
+rt_int8_t rt_tz_get(void)
+{
+    return rt_current_timezone;
+}
+
+rt_int8_t rt_tz_is_dst(void)
+{
+    return 0;
+}
-- 
cgit v1.3.1


From fc094e921103f9a37fa1c4cbf1301900419d2801 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Wed, 21 Jul 2021 01:43:48 +0800
Subject: [rtlibc] remove libc_signal.h and libc_fdset.h

---
 components/dfs/include/dfs_select.h                |   2 +-
 components/libc/aio/posix_aio.c                    |   6 -
 components/libc/aio/posix_aio.h                    |   4 +
 .../libc/compilers/common/none-gcc/sys/errno.h     |   4 +-
 .../libc/compilers/common/none-gcc/sys/stat.h      |   5 +
 .../libc/compilers/common/none-gcc/sys/types.h     |   4 +-
 .../libc/compilers/common/none-gcc/sys/unistd.h    |   4 +-
 components/libc/compilers/common/sys/select.h      |  49 ++++++
 components/libc/compilers/common/sys/signal.h      | 194 +++++++++++++++++++++
 components/libc/pthreads/mqueue.c                  |   1 +
 components/libc/signal/posix_signal.c              |   5 +-
 components/libc/signal/posix_signal.h              |   1 -
 include/libc/libc_fdset.h                          |  60 -------
 include/libc/libc_signal.h                         | 184 -------------------
 include/rtdef.h                                    |   2 +-
 include/rtlibc.h                                   |   3 -
 16 files changed, 263 insertions(+), 265 deletions(-)
 create mode 100644 components/libc/compilers/common/sys/select.h
 create mode 100644 components/libc/compilers/common/sys/signal.h
 delete mode 100644 include/libc/libc_fdset.h
 delete mode 100644 include/libc/libc_signal.h

(limited to 'components/libc/compilers')

diff --git a/components/dfs/include/dfs_select.h b/components/dfs/include/dfs_select.h
index 458691df20..e0572c5059 100644
--- a/components/dfs/include/dfs_select.h
+++ b/components/dfs/include/dfs_select.h
@@ -10,7 +10,7 @@
 #ifndef DFS_SELECT_H__
 #define DFS_SELECT_H__
 
-#include <libc/libc_fdset.h>
+#include <sys/select.h>
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/components/libc/aio/posix_aio.c b/components/libc/aio/posix_aio.c
index 66f15e4c57..66cced8687 100644
--- a/components/libc/aio/posix_aio.c
+++ b/components/libc/aio/posix_aio.c
@@ -9,14 +9,8 @@
  */
 
 #include <stdint.h>
-#include <stdio.h>
-
 #include <rthw.h>
-#include <rtdevice.h>
-#include <rtthread.h>
-
 #include <dfs_posix.h>
-
 #include "posix_aio.h"
 
 struct rt_workqueue* aio_queue = NULL;
diff --git a/components/libc/aio/posix_aio.h b/components/libc/aio/posix_aio.h
index de11738515..4e25e1d15b 100644
--- a/components/libc/aio/posix_aio.h
+++ b/components/libc/aio/posix_aio.h
@@ -11,6 +11,10 @@
 #ifndef POSIX_AIO_H__
 #define POSIX_AIO_H__
 
+#include <stdio.h>
+#include <sys/signal.h>
+#include <rtdevice.h>
+
 struct aiocb
 {
     int aio_fildes;         /* File descriptor. */
diff --git a/components/libc/compilers/common/none-gcc/sys/errno.h b/components/libc/compilers/common/none-gcc/sys/errno.h
index ad3614024d..ff1abca387 100644
--- a/components/libc/compilers/common/none-gcc/sys/errno.h
+++ b/components/libc/compilers/common/none-gcc/sys/errno.h
@@ -7,8 +7,8 @@
  * Date           Author       Notes
  * 2021-05-22     Meco Man     The first version.
  */
-#ifndef _SYS_ERRNO_H
-#define _SYS_ERRNO_H
+#ifndef __SYS_ERRNO_H__
+#define __SYS_ERRNO_H__
 
 #if defined(__ARMCC_VERSION)
 /*
diff --git a/components/libc/compilers/common/none-gcc/sys/stat.h b/components/libc/compilers/common/none-gcc/sys/stat.h
index c4b42083c4..c8f65df435 100644
--- a/components/libc/compilers/common/none-gcc/sys/stat.h
+++ b/components/libc/compilers/common/none-gcc/sys/stat.h
@@ -6,3 +6,8 @@
  * Change Logs:
  * Date           Author       Notes
  */
+
+ #ifndef __SYS_STAT_H__
+ #define __SYS_STAT_H__
+
+ #endif
diff --git a/components/libc/compilers/common/none-gcc/sys/types.h b/components/libc/compilers/common/none-gcc/sys/types.h
index 7222326a2a..e9f44f7762 100644
--- a/components/libc/compilers/common/none-gcc/sys/types.h
+++ b/components/libc/compilers/common/none-gcc/sys/types.h
@@ -8,8 +8,8 @@
  * 2020-09-05     Meco Man     fix bugs
  * 2020-12-16     Meco Man     add useconds_t
  */
-#ifndef __TYPES_H__
-#define __TYPES_H__
+#ifndef __SYS_TYPES_H__
+#define __SYS_TYPES_H__
 
 #include <stdint.h>
 
diff --git a/components/libc/compilers/common/none-gcc/sys/unistd.h b/components/libc/compilers/common/none-gcc/sys/unistd.h
index 2f01f660b3..ea2d674b0f 100644
--- a/components/libc/compilers/common/none-gcc/sys/unistd.h
+++ b/components/libc/compilers/common/none-gcc/sys/unistd.h
@@ -7,8 +7,8 @@
  * Date           Author       Notes
  * 2020-12-16     Meco Man     add usleep
  */
-#ifndef _SYS_UNISTD_H
-#define _SYS_UNISTD_H
+#ifndef __SYS_UNISTD_H__
+#define __SYS_UNISTD_H__
 
 #include <rtconfig.h>
 #include "types.h"
diff --git a/components/libc/compilers/common/sys/select.h b/components/libc/compilers/common/sys/select.h
new file mode 100644
index 0000000000..db42b6ebcc
--- /dev/null
+++ b/components/libc/compilers/common/sys/select.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-07-21     Meco Man     The first version
+ */
+
+#ifndef __SYS_SELECT_H__
+#define __SYS_SELECT_H__
+
+#include <rtconfig.h>
+#include <sys/types.h>
+
+#ifndef  FD_SETSIZE
+#define  FD_SETSIZE  32
+#endif
+
+#ifdef SAL_USING_POSIX
+#ifdef FD_SETSIZE
+#undef FD_SETSIZE
+#endif
+#define FD_SETSIZE      DFS_FD_MAX
+#endif /* SAL_USING_POSIX */
+
+#define   NBBY    8       /* number of bits in a byte */
+
+typedef long    fd_mask;
+
+#define   NFDBITS (sizeof (fd_mask) * NBBY)   /* bits per mask */
+#ifndef   howmany
+#define   howmany(x,y)    (((x)+((y)-1))/(y))
+#endif
+
+#ifndef _SYS_TYPES_FD_SET /* MIPS */
+typedef struct _types_fd_set {
+    fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
+} _types_fd_set;
+#define fd_set _types_fd_set
+
+#define FD_SET(n, p)    ((p)->fds_bits[(n)/NFDBITS] |= (1L << ((n) % NFDBITS)))
+#define FD_CLR(n, p)    ((p)->fds_bits[(n)/NFDBITS] &= ~(1L << ((n) % NFDBITS)))
+#define FD_ISSET(n, p)  ((p)->fds_bits[(n)/NFDBITS] & (1L << ((n) % NFDBITS)))
+#define FD_ZERO(p)      memset((void*)(p), 0, sizeof(*(p)))
+#endif /* _SYS_TYPES_FD_SET */
+
+#endif /* __SYS_SELECT_H__ */
diff --git a/components/libc/compilers/common/sys/signal.h b/components/libc/compilers/common/sys/signal.h
new file mode 100644
index 0000000000..9787958a37
--- /dev/null
+++ b/components/libc/compilers/common/sys/signal.h
@@ -0,0 +1,194 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2017-09-12     Bernard      The first version
+ * 2021-07-21     Meco Man     move to libc/common
+ */
+
+#ifndef __SYS_SIGNAL_H__
+#define __SYS_SIGNAL_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+/*  Signal Generation and Delivery, P1003.1b-1993, p. 63
+    NOTE: P1003.1c/D10, p. 34 adds sigev_notify_function and
+          sigev_notify_attributes to the sigevent structure.  */
+union sigval
+{
+    int    sival_int;    /* Integer signal value */
+    void  *sival_ptr;    /* Pointer signal value */
+};
+
+struct sigevent
+{
+    int          sigev_notify;               /* Notification type */
+    int          sigev_signo;                /* Signal number */
+    union sigval sigev_value;                /* Signal value */
+    void         (*sigev_notify_function)( union sigval );
+                                             /* Notification function */
+    void         *sigev_notify_attributes;   /* Notification Attributes, really pthread_attr_t */
+};
+
+struct siginfo
+{
+    uint16_t si_signo;
+    uint16_t si_code;
+
+    union sigval si_value;
+};
+typedef struct siginfo siginfo_t;
+
+#define SI_USER     0x01    /* Signal sent by kill(). */
+#define SI_QUEUE    0x02    /* Signal sent by sigqueue(). */
+#define SI_TIMER    0x03    /* Signal generated by expiration of a timer set by timer_settime(). */
+#define SI_ASYNCIO  0x04    /* Signal generated by completion of an asynchronous I/O request. */
+#define SI_MESGQ    0x05    /* Signal generated by arrival of a message on an empty message queue. */
+
+typedef void (*_sig_func_ptr)(int);
+typedef unsigned long sigset_t;
+
+struct sigaction
+{
+    _sig_func_ptr sa_handler;
+    sigset_t sa_mask;
+    int sa_flags;
+};
+
+#define SIG_SETMASK 0   /* set mask with sigprocmask() */
+#define SIG_BLOCK   1   /* set of signals to block */
+#define SIG_UNBLOCK 2   /* set of signals to, well, unblock */
+
+#define sigaddset(what,sig) (*(what) |= (1<<(sig)), 0)
+#define sigdelset(what,sig) (*(what) &= ~(1<<(sig)), 0)
+#define sigemptyset(what)   (*(what) = 0, 0)
+#define sigfillset(what)    (*(what) = ~(0), 0)
+#define sigismember(what,sig) (((*(what)) & (1<<(sig))) != 0)
+
+int sigprocmask (int how, const sigset_t *set, sigset_t *oset);
+int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);
+
+#ifdef __ARMCC_VERSION
+#define SIGHUP       1
+/* #define SIGINT       2 */
+#define SIGQUIT      3
+/* #define SIGILL       4 */
+#define SIGTRAP      5
+/* #define SIGABRT      6 */
+#define SIGEMT       7
+/* #define SIGFPE       8 */
+#define SIGKILL      9
+#define SIGBUS      10
+/* #define SIGSEGV     11 */
+#define SIGSYS      12
+#define SIGPIPE     13
+#define SIGALRM     14
+/* #define SIGTERM     15 */
+#define SIGURG      16
+#define SIGSTOP     17
+#define SIGTSTP     18
+#define SIGCONT     19
+#define SIGCHLD     20
+#define SIGTTIN     21
+#define SIGTTOU     22
+#define SIGPOLL     23
+#define SIGWINCH    24
+/* #define SIGUSR1     25 */
+/* #define SIGUSR2     26 */
+#define SIGRTMIN    27
+#define SIGRTMAX    31
+#define NSIG        32
+
+#include <signal.h>
+
+#elif defined(__IAR_SYSTEMS_ICC__)
+#define SIGHUP       1
+#define SIGINT       2
+#define SIGQUIT      3
+#define SIGILL       4
+#define SIGTRAP      5
+/* #define SIGABRT      6 */
+#define SIGEMT       7
+#define SIGFPE       8
+#define SIGKILL      9
+#define SIGBUS      10
+#define SIGSEGV     11
+#define SIGSYS      12
+#define SIGPIPE     13
+#define SIGALRM     14
+#define SIGTERM     15
+#define SIGURG      16
+#define SIGSTOP     17
+#define SIGTSTP     18
+#define SIGCONT     19
+#define SIGCHLD     20
+#define SIGTTIN     21
+#define SIGTTOU     22
+#define SIGPOLL     23
+#define SIGWINCH    24
+#define SIGUSR1     25
+#define SIGUSR2     26
+#define SIGRTMIN    27
+#define SIGRTMAX    31
+#define NSIG        32
+
+#include <signal.h>
+
+#elif defined(__GNUC__)
+#define SIGHUP  1   /* hangup */
+#define SIGINT  2   /* interrupt */
+#define SIGQUIT 3   /* quit */
+#define SIGILL  4   /* illegal instruction (not reset when caught) */
+#define SIGTRAP 5   /* trace trap (not reset when caught) */
+#define SIGIOT  6   /* IOT instruction */
+#define SIGABRT 6   /* used by abort, replace SIGIOT in the future */
+#define SIGEMT  7   /* EMT instruction */
+#define SIGFPE  8   /* floating point exception */
+#define SIGKILL 9   /* kill (cannot be caught or ignored) */
+#define SIGBUS  10  /* bus error */
+#define SIGSEGV 11  /* segmentation violation */
+#define SIGSYS  12  /* bad argument to system call */
+#define SIGPIPE 13  /* write on a pipe with no one to read it */
+#define SIGALRM 14  /* alarm clock */
+#define SIGTERM 15  /* software termination signal from kill */
+#define SIGURG  16  /* urgent condition on IO channel */
+#define SIGSTOP 17  /* sendable stop signal not from tty */
+#define SIGTSTP 18  /* stop signal from tty */
+#define SIGCONT 19  /* continue a stopped process */
+#define SIGCHLD 20  /* to parent on child stop or exit */
+#define SIGCLD  20  /* System V name for SIGCHLD */
+#define SIGTTIN 21  /* to readers pgrp upon background tty read */
+#define SIGTTOU 22  /* like TTIN for output if (tp->t_local&LTOSTOP) */
+#define SIGIO   23  /* input/output possible signal */
+#define SIGPOLL SIGIO   /* System V name for SIGIO */
+#define SIGXCPU 24  /* exceeded CPU time limit */
+#define SIGXFSZ 25  /* exceeded file size limit */
+#define SIGVTALRM 26    /* virtual time alarm */
+#define SIGPROF 27  /* profiling time alarm */
+#define SIGWINCH 28 /* window changed */
+#define SIGLOST 29  /* resource lost (eg, record-lock lost) */
+#define SIGUSR1 30  /* user defined signal 1 */
+#define SIGUSR2 31  /* user defined signal 2 */
+#define NSIG    32      /* signal 0 implied */
+
+#ifndef _SIGNAL_H_
+/* Some applications take advantage of the fact that <sys/signal.h>
+ * and <signal.h> are equivalent in glibc.  Allow for that here.  */
+#include <signal.h>
+#endif
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/components/libc/pthreads/mqueue.c b/components/libc/pthreads/mqueue.c
index 1af0ab2919..a59c7a445b 100644
--- a/components/libc/pthreads/mqueue.c
+++ b/components/libc/pthreads/mqueue.c
@@ -8,6 +8,7 @@
  */
 
 #include <string.h>
+#include <sys/signal.h>
 #include "mqueue.h"
 #include "pthread_internal.h"
 
diff --git a/components/libc/signal/posix_signal.c b/components/libc/signal/posix_signal.c
index 1cb561d428..45646f63ea 100644
--- a/components/libc/signal/posix_signal.c
+++ b/components/libc/signal/posix_signal.c
@@ -7,6 +7,7 @@
  * Date           Author       Notes
  * 2017/10/1      Bernard      The first version
  */
+
 #include <rthw.h>
 #include <rtthread.h>
 
@@ -14,6 +15,7 @@
 #include <sys/errno.h>
 
 #include "posix_signal.h"
+
 #define sig_valid(sig_no)   (sig_no >= 0 && sig_no < RT_SIG_MAX)
 
 void (*signal(int sig, void (*func)(int))) (int)
@@ -79,13 +81,10 @@ int sigtimedwait(const sigset_t *set, siginfo_t *info,
     int ret  = 0;
     int tick = RT_WAITING_FOREVER;
 
-#ifdef RT_USING_PTHREADS
     if (timeout)
     {
-        extern int clock_time_to_tick(const struct timespec *time);
         tick = clock_time_to_tick(timeout);
     }
-#endif
 
     ret = rt_signal_wait(set, info, tick);
     if (ret == 0) return 0;
diff --git a/components/libc/signal/posix_signal.h b/components/libc/signal/posix_signal.h
index fa8ad38fa6..f04b54c5f8 100644
--- a/components/libc/signal/posix_signal.h
+++ b/components/libc/signal/posix_signal.h
@@ -15,7 +15,6 @@
 extern "C" {
 #endif
 
-#include <rtthread.h>
 #include <sys/signal.h>
 
 enum rt_signal_value{
diff --git a/include/libc/libc_fdset.h b/include/libc/libc_fdset.h
deleted file mode 100644
index c542e6855c..0000000000
--- a/include/libc/libc_fdset.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017-10-30     Bernard      The first version
- */
-
-#ifndef LIBC_FDSET_H__
-#define LIBC_FDSET_H__
-
-#include <rtconfig.h>
-
-#if defined(RT_USING_NEWLIB) || defined(_WIN32) || (defined( __GNUC__ ) && !defined(__ARMCC_VERSION))
-#include <sys/types.h>
-#if defined(HAVE_SYS_SELECT_H)
-#include <sys/select.h>
-#endif
-
-#else
-
-#ifdef SAL_USING_POSIX
-
-#ifdef FD_SETSIZE
-#undef FD_SETSIZE
-#endif
-
-#define FD_SETSIZE      DFS_FD_MAX
-#endif
-
-#  ifndef   FD_SETSIZE
-#   define  FD_SETSIZE  32
-#  endif
-
-#  define   NBBY    8       /* number of bits in a byte */
-
-typedef long    fd_mask;
-#  define   NFDBITS (sizeof (fd_mask) * NBBY)   /* bits per mask */
-#  ifndef   howmany
-#   define  howmany(x,y)    (((x)+((y)-1))/(y))
-#  endif
-
-/* We use a macro for fd_set so that including Sockets.h afterwards
-   can work.  */
-typedef struct _types_fd_set {
-    fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
-} _types_fd_set;
-
-#define fd_set _types_fd_set
-
-#  define   FD_SET(n, p)    ((p)->fds_bits[(n)/NFDBITS] |= (1L << ((n) % NFDBITS)))
-#  define   FD_CLR(n, p)    ((p)->fds_bits[(n)/NFDBITS] &= ~(1L << ((n) % NFDBITS)))
-#  define   FD_ISSET(n, p)  ((p)->fds_bits[(n)/NFDBITS] & (1L << ((n) % NFDBITS)))
-#  define   FD_ZERO(p)      memset((void*)(p), 0, sizeof(*(p)))
-
-#endif
-
-#endif
diff --git a/include/libc/libc_signal.h b/include/libc/libc_signal.h
deleted file mode 100644
index 1fb8194643..0000000000
--- a/include/libc/libc_signal.h
+++ /dev/null
@@ -1,184 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017-09-12     Bernard      The first version
- */
-
-#ifndef LIBC_SIGNAL_H__
-#define LIBC_SIGNAL_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stdint.h>
-#ifdef HAVE_CCONFIG_H
-#include <cconfig.h>
-#endif
-
-#ifndef HAVE_SIGVAL
-/*  Signal Generation and Delivery, P1003.1b-1993, p. 63
-    NOTE: P1003.1c/D10, p. 34 adds sigev_notify_function and
-          sigev_notify_attributes to the sigevent structure.  */
-
-union sigval
-{
-    int    sival_int;    /* Integer signal value */
-    void  *sival_ptr;    /* Pointer signal value */
-};
-#endif
-
-#ifndef HAVE_SIGEVENT
-struct sigevent
-{
-    int          sigev_notify;               /* Notification type */
-    int          sigev_signo;                /* Signal number */
-    union sigval sigev_value;                /* Signal value */
-    void         (*sigev_notify_function)( union sigval );
-                                             /* Notification function */
-    void         *sigev_notify_attributes;   /* Notification Attributes, really pthread_attr_t */
-};
-#endif
-
-#ifndef HAVE_SIGINFO
-struct siginfo
-{
-    uint16_t si_signo;
-    uint16_t si_code;
-
-    union sigval si_value;
-};
-typedef struct siginfo siginfo_t;
-#endif
-
-#define SI_USER     0x01    /* Signal sent by kill(). */
-#define SI_QUEUE    0x02    /* Signal sent by sigqueue(). */
-#define SI_TIMER    0x03    /* Signal generated by expiration of a
-                               timer set by timer_settime(). */
-#define SI_ASYNCIO  0x04    /* Signal generated by completion of an
-                               asynchronous I/O request. */
-#define SI_MESGQ    0x05    /* Signal generated by arrival of a
-                               message on an empty message queue. */
-
-#if !defined(RT_USING_NEWLIB)
-typedef void (*_sig_func_ptr)(int);
-typedef unsigned long sigset_t;
-#endif
-
-#include <signal.h>
-
-#ifdef __ARMCC_VERSION
-
-#define SIGHUP       1
-/* #define SIGINT       2 */
-#define SIGQUIT      3
-/* #define SIGILL       4 */
-#define SIGTRAP      5
-/* #define SIGABRT      6 */
-#define SIGEMT       7
-/* #define SIGFPE       8 */
-#define SIGKILL      9
-#define SIGBUS      10
-/* #define SIGSEGV     11 */
-#define SIGSYS      12
-#define SIGPIPE     13
-#define SIGALRM     14
-/* #define SIGTERM     15 */
-#define SIGURG      16
-#define SIGSTOP     17
-#define SIGTSTP     18
-#define SIGCONT     19
-#define SIGCHLD     20
-#define SIGTTIN     21
-#define SIGTTOU     22
-#define SIGPOLL     23
-#define SIGWINCH    24
-/* #define SIGUSR1     25 */
-/* #define SIGUSR2     26 */
-#define SIGRTMIN    27
-#define SIGRTMAX    31
-#define NSIG        32
-
-#define SIG_SETMASK 0   /* set mask with sigprocmask() */
-#define SIG_BLOCK   1   /* set of signals to block */
-#define SIG_UNBLOCK 2   /* set of signals to, well, unblock */
-
-struct sigaction
-{
-    _sig_func_ptr sa_handler;
-    sigset_t sa_mask;
-    int sa_flags;
-};
-
-#define sigaddset(what,sig) (*(what) |= (1<<(sig)), 0)
-#define sigdelset(what,sig) (*(what) &= ~(1<<(sig)), 0)
-#define sigemptyset(what)   (*(what) = 0, 0)
-#define sigfillset(what)    (*(what) = ~(0), 0)
-#define sigismember(what,sig) (((*(what)) & (1<<(sig))) != 0)
-
-int sigprocmask (int how, const sigset_t *set, sigset_t *oset);
-int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);
-
-#elif defined(__IAR_SYSTEMS_ICC__)
-
-#define SIGHUP       1
-#define SIGINT       2
-#define SIGQUIT      3
-#define SIGILL       4
-#define SIGTRAP      5
-/* #define SIGABRT      6 */
-#define SIGEMT       7
-#define SIGFPE       8
-#define SIGKILL      9
-#define SIGBUS      10
-#define SIGSEGV     11
-#define SIGSYS      12
-#define SIGPIPE     13
-#define SIGALRM     14
-#define SIGTERM     15
-#define SIGURG      16
-#define SIGSTOP     17
-#define SIGTSTP     18
-#define SIGCONT     19
-#define SIGCHLD     20
-#define SIGTTIN     21
-#define SIGTTOU     22
-#define SIGPOLL     23
-#define SIGWINCH    24
-#define SIGUSR1     25
-#define SIGUSR2     26
-#define SIGRTMIN    27
-#define SIGRTMAX    31
-#define NSIG        32
-
-#define SIG_SETMASK 0   /* set mask with sigprocmask() */
-#define SIG_BLOCK   1   /* set of signals to block */
-#define SIG_UNBLOCK 2   /* set of signals to, well, unblock */
-
-struct sigaction
-{
-    _sig_func_ptr sa_handler;
-    sigset_t sa_mask;
-    int sa_flags;
-};
-
-#define sigaddset(what,sig) (*(what) |= (1<<(sig)), 0)
-#define sigdelset(what,sig) (*(what) &= ~(1<<(sig)), 0)
-#define sigemptyset(what)   (*(what) = 0, 0)
-#define sigfillset(what)    (*(what) = ~(0), 0)
-#define sigismember(what,sig) (((*(what)) & (1<<(sig))) != 0)
-
-int sigprocmask (int how, const sigset_t *set, sigset_t *oset);
-int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
diff --git a/include/rtdef.h b/include/rtdef.h
index 394bbca5d2..62d0a53685 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -510,7 +510,7 @@ typedef struct rt_timer *rt_timer_t;
  * @addtogroup Signal
  */
 #ifdef RT_USING_SIGNALS
-#include <libc/libc_signal.h>
+#include <sys/signal.h>
 typedef unsigned long rt_sigset_t;
 typedef void (*rt_sighandler_t)(int signo);
 typedef siginfo_t rt_siginfo_t;
diff --git a/include/rtlibc.h b/include/rtlibc.h
index ac44a97831..4b145b1b1b 100644
--- a/include/rtlibc.h
+++ b/include/rtlibc.h
@@ -13,11 +13,8 @@
 
 /* definitions for libc if toolchain has no these definitions */
 #include "libc/libc_stat.h"
-
 #include "libc/libc_fcntl.h"
 #include "libc/libc_dirent.h"
-#include "libc/libc_signal.h"
-#include "libc/libc_fdset.h"
 
 #ifndef RT_USING_LIBC
 #if defined(__ARMCC_VERSION) || defined(__IAR_SYSTEMS_ICC__)
-- 
cgit v1.3.1


From 62ff77d4932bb81f5acaf8092cbb97e68de2a9ba Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Thu, 22 Jul 2021 00:35:08 +0800
Subject: [libc][time] 重命名非标准libc函数 并 调整time.h定义位置
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/sys/time.h | 42 ++++++++++++++---------------
 components/libc/compilers/common/time.c     | 23 ++++++++++------
 components/libc/pthreads/mqueue.c           |  2 +-
 components/libc/pthreads/pthread_cond.c     |  2 +-
 components/libc/pthreads/semaphore.c        |  2 +-
 components/libc/signal/posix_signal.c       |  2 +-
 6 files changed, 40 insertions(+), 33 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/sys/time.h b/components/libc/compilers/common/sys/time.h
index 4ca665c536..c2320429e0 100644
--- a/components/libc/compilers/common/sys/time.h
+++ b/components/libc/compilers/common/sys/time.h
@@ -19,6 +19,7 @@
 extern "C" {
 #endif
 
+/* timezone */
 #define DST_NONE    0   /* not on dst */
 #define DST_USA     1   /* USA style dst */
 #define DST_AUST    2   /* Australian style dst */
@@ -31,12 +32,21 @@ extern "C" {
 #define DST_TUR     9   /* Turkey */
 #define DST_AUSTALT 10  /* Australian style with shift in 1986 */
 
-#ifndef _TIMEVAL_DEFINED
-#define _TIMEVAL_DEFINED
+struct timezone {
+  int tz_minuteswest;   /* minutes west of Greenwich */
+  int tz_dsttime;       /* type of dst correction */
+};
+
+void rt_tz_set(rt_int8_t tz);
+rt_int8_t rt_tz_get(void);
+rt_int8_t rt_tz_is_dst(void);
+
 /*
  * Structure returned by gettimeofday(2) system call,
  * and used in other calls.
  */
+#ifndef _TIMEVAL_DEFINED
+#define _TIMEVAL_DEFINED
 #if !(defined(_WIN32))
 struct timeval {
     long    tv_sec;     /* seconds */
@@ -45,18 +55,6 @@ struct timeval {
 #endif
 #endif /* _TIMEVAL_DEFINED */
 
-#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && !(defined(__ICCARM__) && (__VER__ >= 8010001)) && !defined(_WIN32)
-struct timespec {
-    time_t  tv_sec;     /* seconds */
-    long    tv_nsec;    /* and nanoseconds */
-};
-#endif
-
-struct timezone {
-  int tz_minuteswest;   /* minutes west of Greenwich */
-  int tz_dsttime;       /* type of dst correction */
-};
-
 int stime(const time_t *t);
 time_t timegm(struct tm * const t);
 int gettimeofday(struct timeval *tv, struct timezone *tz);
@@ -67,6 +65,14 @@ struct tm *gmtime_r(const time_t *timep, struct tm *r);
 
 #ifdef RT_USING_POSIX
 #include <sys/types.h>
+
+#if !(defined(__GNUC__) && !defined(__ARMCC_VERSION)/*GCC*/) && !(defined(__ICCARM__) && (__VER__ >= 8010001)) && !defined(_WIN32)
+struct timespec {
+    time_t  tv_sec;     /* seconds */
+    long    tv_nsec;    /* and nanoseconds */
+};
+#endif
+
 /* posix clock and timer */
 #define MILLISECOND_PER_SECOND  1000UL
 #define MICROSECOND_PER_SECOND  1000000UL
@@ -96,15 +102,9 @@ struct tm *gmtime_r(const time_t *timep, struct tm *r);
 int clock_getres  (clockid_t clockid, struct timespec *res);
 int clock_gettime (clockid_t clockid, struct timespec *tp);
 int clock_settime (clockid_t clockid, const struct timespec *tp);
-int clock_time_to_tick(const struct timespec *time);
+int rt_timespec_to_tick(const struct timespec *time);
 #endif /* RT_USING_POSIX */
 
-
-/* timezone APIs (Not standard LIBC APIs) */
-void rt_tz_set(rt_int8_t tz);
-rt_int8_t rt_tz_get(void);
-rt_int8_t rt_tz_is_dst(void);
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 8f4856a330..6e4ec58950 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -465,8 +465,8 @@ RTM_EXPORT(difftime);
 RTM_EXPORT(strftime);
 
 #ifdef RT_USING_POSIX
-static struct timeval _timevalue;
-static int clock_time_system_init()
+static volatile struct timeval _timevalue;
+static int _rt_clock_time_system_init()
 {
     time_t time;
     rt_tick_t tick;
@@ -493,7 +493,7 @@ static int clock_time_system_init()
 
     return 0;
 }
-INIT_COMPONENT_EXPORT(clock_time_system_init);
+INIT_COMPONENT_EXPORT(_rt_clock_time_system_init);
 
 int clock_getres(clockid_t clockid, struct timespec *res)
 {
@@ -614,7 +614,7 @@ int clock_settime(clockid_t clockid, const struct timespec *tp)
 }
 RTM_EXPORT(clock_settime);
 
-int clock_time_to_tick(const struct timespec *time)
+int rt_timespec_to_tick(const struct timespec *time)
 {
     int tick;
     int nsecond, second;
@@ -645,19 +645,19 @@ int clock_time_to_tick(const struct timespec *time)
 
     return tick;
 }
-RTM_EXPORT(clock_time_to_tick);
+RTM_EXPORT(rt_timespec_to_tick);
 
 #endif /* RT_USING_POSIX */
 
 
-/* timezone APIs (Not standard LIBC APIs) */
+/* timezone */
 #ifndef RT_LIBC_DEFAULT_TIMEZONE
 #define RT_LIBC_DEFAULT_TIMEZONE    8
 #endif
 
 #include <rthw.h>
 
-volatile static rt_int8_t rt_current_timezone = RT_LIBC_DEFAULT_TIMEZONE;
+static volatile rt_int8_t rt_current_timezone = RT_LIBC_DEFAULT_TIMEZONE;
 
 void rt_tz_set(rt_int8_t tz)
 {
@@ -669,7 +669,14 @@ void rt_tz_set(rt_int8_t tz)
 
 rt_int8_t rt_tz_get(void)
 {
-    return rt_current_timezone;
+    rt_int8_t tz;
+    register rt_base_t level;
+
+    level = rt_hw_interrupt_disable();
+    tz = rt_current_timezone;
+    rt_hw_interrupt_enable(level);
+
+    return tz;
 }
 
 rt_int8_t rt_tz_is_dst(void)
diff --git a/components/libc/pthreads/mqueue.c b/components/libc/pthreads/mqueue.c
index 1af0ab2919..ce2ff43e23 100644
--- a/components/libc/pthreads/mqueue.c
+++ b/components/libc/pthreads/mqueue.c
@@ -243,7 +243,7 @@ ssize_t mq_timedreceive(mqd_t                  mqdes,
         return -1;
     }
 
-    tick = clock_time_to_tick(abs_timeout);
+    tick = rt_timespec_to_tick(abs_timeout);
 
     result = rt_mq_recv(mqdes->mq, msg_ptr, msg_len, tick);
     if (result == RT_EOK)
diff --git a/components/libc/pthreads/pthread_cond.c b/components/libc/pthreads/pthread_cond.c
index 59c271bf6e..9bf49704ed 100644
--- a/components/libc/pthreads/pthread_cond.c
+++ b/components/libc/pthreads/pthread_cond.c
@@ -222,7 +222,7 @@ int pthread_cond_timedwait(pthread_cond_t        *cond,
     int timeout;
     rt_err_t result;
 
-    timeout = clock_time_to_tick(abstime);
+    timeout = rt_timespec_to_tick(abstime);
     result = _pthread_cond_timedwait(cond, mutex, timeout);
     if (result == RT_EOK)
         return 0;
diff --git a/components/libc/pthreads/semaphore.c b/components/libc/pthreads/semaphore.c
index 199b33bfe8..5e59ae850f 100644
--- a/components/libc/pthreads/semaphore.c
+++ b/components/libc/pthreads/semaphore.c
@@ -319,7 +319,7 @@ int sem_timedwait(sem_t *sem, const struct timespec *abs_timeout)
         return EINVAL;
 
     /* calculate os tick */
-    tick = clock_time_to_tick(abs_timeout);
+    tick = rt_timespec_to_tick(abs_timeout);
 
     result = rt_sem_take(sem->sem, tick);
     if (result == -RT_ETIMEOUT)
diff --git a/components/libc/signal/posix_signal.c b/components/libc/signal/posix_signal.c
index 1cb561d428..d664feb24d 100644
--- a/components/libc/signal/posix_signal.c
+++ b/components/libc/signal/posix_signal.c
@@ -83,7 +83,7 @@ int sigtimedwait(const sigset_t *set, siginfo_t *info,
     if (timeout)
     {
         extern int clock_time_to_tick(const struct timespec *time);
-        tick = clock_time_to_tick(timeout);
+        tick = rt_timespec_to_tick(timeout);
     }
 #endif
 
-- 
cgit v1.3.1


From 4ce6b2f5de05ad9a31448a5c1b5dd8b1863472d4 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Thu, 22 Jul 2021 01:19:49 +0800
Subject: [libc][time] 对posix相关函数 获取时间结果的判断逻辑做出调整
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c | 59 +++++++++++++++++++--------------
 1 file changed, 35 insertions(+), 24 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 6e4ec58950..45bedacf68 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -465,38 +465,42 @@ RTM_EXPORT(difftime);
 RTM_EXPORT(strftime);
 
 #ifdef RT_USING_POSIX
+
+#ifdef RT_USING_RTC
 static volatile struct timeval _timevalue;
 static int _rt_clock_time_system_init()
 {
-    time_t time;
+    time_t time = 0;
     rt_tick_t tick;
     rt_device_t device;
 
-    time = 0;
-
-#ifdef RT_USING_RTC
     device = rt_device_find("rtc");
     if (device != RT_NULL)
     {
         /* get realtime seconds */
-        rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time);
+        if(rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time) == RT_EOK)
+        {
+            /* get tick */
+            tick = rt_tick_get();
+            _timevalue.tv_usec = (tick%RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
+            _timevalue.tv_sec = time - tick/RT_TICK_PER_SECOND - 1;
+            return 0;
+        }
     }
-#else
-    LOG_W("Cannot find a RTC device to provide time!");
-#endif
-
-    /* get tick */
-    tick = rt_tick_get();
-
-    _timevalue.tv_usec = (tick%RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
-    _timevalue.tv_sec = time - tick/RT_TICK_PER_SECOND - 1;
 
-    return 0;
+    _timevalue.tv_usec = 0;
+    _timevalue.tv_sec = 0;
+    return -1;
 }
 INIT_COMPONENT_EXPORT(_rt_clock_time_system_init);
+#endif /* RT_USING_RTC */
 
 int clock_getres(clockid_t clockid, struct timespec *res)
 {
+#ifndef RT_USING_RTC
+    LOG_W("Cannot find a RTC device to save time!");
+    return -1;
+#else
     int ret = 0;
 
     if (res == RT_NULL)
@@ -526,11 +530,16 @@ int clock_getres(clockid_t clockid, struct timespec *res)
     }
 
     return ret;
+#endif /* RT_USING_RTC */
 }
 RTM_EXPORT(clock_getres);
 
 int clock_gettime(clockid_t clockid, struct timespec *tp)
 {
+#ifndef RT_USING_RTC
+    LOG_W("Cannot find a RTC device to save time!");
+    return -1;
+#else
     int ret = 0;
 
     if (tp == RT_NULL)
@@ -571,11 +580,16 @@ int clock_gettime(clockid_t clockid, struct timespec *tp)
     }
 
     return ret;
+#endif /* RT_USING_RTC */
 }
 RTM_EXPORT(clock_gettime);
 
 int clock_settime(clockid_t clockid, const struct timespec *tp)
 {
+#ifndef RT_USING_RTC
+    LOG_W("Cannot find a RTC device to save time!");
+    return -1;
+#else
     int second;
     rt_tick_t tick;
     rt_device_t device;
@@ -583,7 +597,6 @@ int clock_settime(clockid_t clockid, const struct timespec *tp)
     if ((clockid != CLOCK_REALTIME) || (tp == RT_NULL))
     {
         rt_set_errno(EINVAL);
-
         return -1;
     }
 
@@ -596,21 +609,19 @@ int clock_settime(clockid_t clockid, const struct timespec *tp)
     _timevalue.tv_usec = MICROSECOND_PER_SECOND - (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
     _timevalue.tv_sec = second - tick/RT_TICK_PER_SECOND - 1;
 
-#ifdef RT_USING_RTC
     /* update for RTC device */
     device = rt_device_find("rtc");
     if (device != RT_NULL)
     {
         /* set realtime seconds */
-        rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &second);
+        if(rt_device_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &second) == RT_EOK)
+        {
+            return 0;
+        }
     }
-    else
-#else
-    LOG_W("Cannot find a RTC device to save time!");
-#endif
-        return -1;
 
-    return 0;
+    return -1;
+#endif /* RT_USING_RTC */
 }
 RTM_EXPORT(clock_settime);
 
-- 
cgit v1.3.1


From 19c5088bb8b6cfdc9e3cecc63b6f9c116a799c49 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Thu, 22 Jul 2021 01:40:37 +0800
Subject: [libc][time] 修复posix相关函数没有进行临界区保护的问题
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/common/time.c | 35 +++++++++++++++++----------------
 1 file changed, 18 insertions(+), 17 deletions(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/common/time.c b/components/libc/compilers/common/time.c
index 45bedacf68..50f6d4c71e 100644
--- a/components/libc/compilers/common/time.c
+++ b/components/libc/compilers/common/time.c
@@ -24,7 +24,7 @@
 #include "sys/time.h"
 #include <sys/errno.h>
 #include <rtthread.h>
-
+#include <rthw.h>
 #ifdef RT_USING_DEVICE
 #include <rtdevice.h>
 #endif
@@ -470,6 +470,7 @@ RTM_EXPORT(strftime);
 static volatile struct timeval _timevalue;
 static int _rt_clock_time_system_init()
 {
+    register rt_base_t level;
     time_t time = 0;
     rt_tick_t tick;
     rt_device_t device;
@@ -480,16 +481,20 @@ static int _rt_clock_time_system_init()
         /* get realtime seconds */
         if(rt_device_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &time) == RT_EOK)
         {
-            /* get tick */
-            tick = rt_tick_get();
+            level = rt_hw_interrupt_disable();
+            tick = rt_tick_get(); /* get tick */
             _timevalue.tv_usec = (tick%RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
             _timevalue.tv_sec = time - tick/RT_TICK_PER_SECOND - 1;
+            rt_hw_interrupt_enable(level);
             return 0;
         }
     }
 
+    level = rt_hw_interrupt_disable();
     _timevalue.tv_usec = 0;
     _timevalue.tv_sec = 0;
+    rt_hw_interrupt_enable(level);
+
     return -1;
 }
 INIT_COMPONENT_EXPORT(_rt_clock_time_system_init);
@@ -552,11 +557,14 @@ int clock_gettime(clockid_t clockid, struct timespec *tp)
     {
     case CLOCK_REALTIME:
         {
-            /* get tick */
-            int tick = rt_tick_get();
+            int tick;
+            register rt_base_t level;
 
+            level = rt_hw_interrupt_disable();
+            tick = rt_tick_get(); /* get tick */
             tp->tv_sec  = _timevalue.tv_sec + tick / RT_TICK_PER_SECOND;
             tp->tv_nsec = (_timevalue.tv_usec + (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK) * 1000;
+            rt_hw_interrupt_enable(level);
         }
         break;
 
@@ -590,6 +598,7 @@ int clock_settime(clockid_t clockid, const struct timespec *tp)
     LOG_W("Cannot find a RTC device to save time!");
     return -1;
 #else
+    register rt_base_t level;
     int second;
     rt_tick_t tick;
     rt_device_t device;
@@ -602,12 +611,13 @@ int clock_settime(clockid_t clockid, const struct timespec *tp)
 
     /* get second */
     second = tp->tv_sec;
-    /* get tick */
-    tick = rt_tick_get();
 
+    level = rt_hw_interrupt_disable();
+    tick = rt_tick_get(); /* get tick */
     /* update timevalue */
     _timevalue.tv_usec = MICROSECOND_PER_SECOND - (tick % RT_TICK_PER_SECOND) * MICROSECOND_PER_TICK;
     _timevalue.tv_sec = second - tick/RT_TICK_PER_SECOND - 1;
+    rt_hw_interrupt_enable(level);
 
     /* update for RTC device */
     device = rt_device_find("rtc");
@@ -666,8 +676,6 @@ RTM_EXPORT(rt_timespec_to_tick);
 #define RT_LIBC_DEFAULT_TIMEZONE    8
 #endif
 
-#include <rthw.h>
-
 static volatile rt_int8_t rt_current_timezone = RT_LIBC_DEFAULT_TIMEZONE;
 
 void rt_tz_set(rt_int8_t tz)
@@ -680,14 +688,7 @@ void rt_tz_set(rt_int8_t tz)
 
 rt_int8_t rt_tz_get(void)
 {
-    rt_int8_t tz;
-    register rt_base_t level;
-
-    level = rt_hw_interrupt_disable();
-    tz = rt_current_timezone;
-    rt_hw_interrupt_enable(level);
-
-    return tz;
+    return rt_current_timezone;
 }
 
 rt_int8_t rt_tz_is_dst(void)
-- 
cgit v1.3.1


From 3fae2266303f4e7424d333ebdb68eaab740e10d6 Mon Sep 17 00:00:00 2001
From: greedyhao <hao_kr@163.com>
Date: Wed, 11 Aug 2021 09:42:24 +0800
Subject: [newlib] fix compile error when closing RT_USING_CONSOLE

---
 components/libc/compilers/newlib/syscalls.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'components/libc/compilers')

diff --git a/components/libc/compilers/newlib/syscalls.c b/components/libc/compilers/newlib/syscalls.c
index e01dc59eb6..aeb4d123e7 100644
--- a/components/libc/compilers/newlib/syscalls.c
+++ b/components/libc/compilers/newlib/syscalls.c
@@ -210,7 +210,7 @@ int _wait_r(struct _reent *ptr, int *status)
 _ssize_t _write_r(struct _reent *ptr, int fd, const void *buf, size_t nbytes)
 {
 #ifndef RT_USING_DFS
-#ifdef RT_USING_DEVICE
+#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
     if (fileno(stdout) == fd)
     {
         rt_device_t console;
-- 
cgit v1.3.1