sync branch rt-smart. (#6641)

* Synchronize the code of the rt mart branch to the master branch.
  * TTY device
  * Add lwP code from rt-smart
  * Add vnode in DFS, but DFS will be re-write for rt-smart
  * There are three libcpu for rt-smart:
    * arm/cortex-a, arm/aarch64
    * riscv64

Co-authored-by: Rbb666 <[email protected]>
Co-authored-by: zhkag <[email protected]>

2 files changed, 14 insertions, 7 deletions

diff --git a/components/libc/compilers/common/include/sys/signal.h b/components/libc/compilers/common/include/sys/signal.h
index 1a3b9c1beb..f2a21baed7 100644
--- a/components/libc/compilers/common/include/sys/signal.h
+++ b/components/libc/compilers/common/include/sys/signal.h
@@ -24,10 +24,10 @@ extern "C" {
 
 #define SIGEV_NONE   1  /* No asynchronous notification shall be delivered */
                         /*   when the event of interest occurs. */
-#define SIGEV_SIGNAL 2  /* A queued signal, with an application defined */
+#define SIGEV_SIGNAL 0  /* A queued signal, with an application defined */
                         /*  value, shall be delivered when the event of */
                         /*  interest occurs. */
-#define SIGEV_THREAD 3  /* A notification function shall be called to */
+#define SIGEV_THREAD 2  /* A notification function shall be called to */
                         /*   perform notification. */
 
 /*  Signal Generation and Delivery, P1003.1b-1993, p. 63
@@ -41,9 +41,9 @@ union sigval
 
 struct sigevent
 {
-    int          sigev_notify;               /* Notification type */
+    union sigval sigev_value;
     int          sigev_signo;                /* Signal number */
-    union sigval sigev_value;                /* Signal value */
+    int          sigev_notify;               /* Notification type */
     void         (*sigev_notify_function)( union sigval );
                                              /* Notification function */
     void         *sigev_notify_attributes;   /* Notification Attributes, really pthread_attr_t */
diff --git a/components/libc/compilers/common/include/sys/time.h b/components/libc/compilers/common/include/sys/time.h
index e3bf3ee4ef..8a1ae60909 100644
--- a/components/libc/compilers/common/include/sys/time.h
+++ b/components/libc/compilers/common/include/sys/time.h
@@ -99,8 +99,6 @@ time_t time(time_t* t);
 int nanosleep(const struct timespec *rqtp, struct timespec *rmtp);
 #endif /* RT_USING_POSIX_DELAY */
 
-#if defined(RT_USING_POSIX_CLOCK) || defined (RT_USING_POSIX_TIMER)
-/* POSIX clock and timer */
 #define MILLISECOND_PER_SECOND  1000UL
 #define MICROSECOND_PER_SECOND  1000000UL
 #define NANOSECOND_PER_SECOND   1000000000UL
@@ -109,6 +107,9 @@ int nanosleep(const struct timespec *rqtp, struct timespec *rmtp);
 #define MICROSECOND_PER_TICK    (MICROSECOND_PER_SECOND / RT_TICK_PER_SECOND)
 #define NANOSECOND_PER_TICK     (NANOSECOND_PER_SECOND  / RT_TICK_PER_SECOND)
 
+#if defined(RT_USING_POSIX_CLOCK) || defined (RT_USING_POSIX_TIMER)
+/* POSIX clock and timer */
+
 #ifndef CLOCK_REALTIME
 #define CLOCK_REALTIME      1
 #endif /* CLOCK_REALTIME */
@@ -126,6 +127,12 @@ int nanosleep(const struct timespec *rqtp, struct timespec *rmtp);
 #ifndef CLOCK_MONOTONIC
 #define CLOCK_MONOTONIC     4
 #endif /* CLOCK_MONOTONIC */
+
+#ifdef CLOCK_TAI
+#define CLOCK_ID_MAX CLOCK_TAI
+#else
+#define CLOCK_ID_MAX CLOCK_MONOTONIC
+#endif
 #endif /* defined(RT_USING_POSIX_CLOCK) || defined (RT_USING_POSIX_TIMER) */
 
 #ifdef RT_USING_POSIX_CLOCK
@@ -137,7 +144,7 @@ int rt_timespec_to_tick(const struct timespec *time);
 #endif /* RT_USING_POSIX_CLOCK */
 
 #ifdef RT_USING_POSIX_TIMER
-#include "signal.h"
+#include <sys/signal.h>
 int timer_create(clockid_t clockid, struct sigevent *evp, timer_t *timerid);
 int timer_delete(timer_t timerid);
 int timer_getoverrun(timer_t timerid);