[rtdef] use lower-case to define attributes (#6728)

* [rtdef] rename RT_WEAK attribute as rt_weak

* [rtdef] rename RT_USED attribute as rt_used

* [rtdef] rename RT_SECTION attribute as rt_section

* [rtdef] rename ALIGN attribute as rt_align

* [legacy] add RT_USED ALIGN RT_SECTION RT_WEAK as legacy support

34 files changed, 139 insertions, 129 deletions

diff --git a/components/dfs/filesystems/romfs/romfs.c b/components/dfs/filesystems/romfs/romfs.c
index 6897c23d5c..0ca17766c8 100644
--- a/components/dfs/filesystems/romfs/romfs.c
+++ b/components/dfs/filesystems/romfs/romfs.c
@@ -25,13 +25,13 @@ static const unsigned char _dummy_txt[] =
     0x74, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61, 0x20, 0x66, 0x69, 0x6c, 0x65, 0x21, 0x0d, 0x0a,
 };
 
-RT_WEAK const struct romfs_dirent _root_dirent[] =
+rt_weak const struct romfs_dirent _root_dirent[] =
 {
     {ROMFS_DIRENT_DIR, "dummy", (rt_uint8_t *)_dummy, sizeof(_dummy) / sizeof(_dummy[0])},
     {ROMFS_DIRENT_FILE, "dummy.txt", _dummy_txt, sizeof(_dummy_txt)},
 };
 
-RT_WEAK const struct romfs_dirent romfs_root =
+rt_weak const struct romfs_dirent romfs_root =
 {
     ROMFS_DIRENT_DIR, "/", (rt_uint8_t *)_root_dirent, sizeof(_root_dirent) / sizeof(_root_dirent[0])
 };
diff --git a/components/drivers/pm/pm.c b/components/drivers/pm/pm.c
index b4dee11e41..0c6dcf065d 100644
--- a/components/drivers/pm/pm.c
+++ b/components/drivers/pm/pm.c
@@ -64,12 +64,12 @@ static rt_uint8_t _pm_default_deepsleep = RT_PM_DEFAULT_DEEPSLEEP_MODE;
 static struct rt_pm_notify _pm_notify;
 static rt_uint8_t _pm_init_flag = 0;
 
-RT_WEAK rt_uint32_t rt_pm_enter_critical(rt_uint8_t sleep_mode)
+rt_weak rt_uint32_t rt_pm_enter_critical(rt_uint8_t sleep_mode)
 {
     return rt_hw_interrupt_disable();
 }
 
-RT_WEAK void rt_pm_exit_critical(rt_uint32_t ctx, rt_uint8_t sleep_mode)
+rt_weak void rt_pm_exit_critical(rt_uint32_t ctx, rt_uint8_t sleep_mode)
 {
     rt_hw_interrupt_enable(ctx);
 }
@@ -288,7 +288,7 @@ static rt_bool_t _pm_device_check_idle(void)
     return RT_TRUE;
 }
 
-RT_WEAK rt_tick_t pm_timer_next_timeout_tick(rt_uint8_t mode)
+rt_weak rt_tick_t pm_timer_next_timeout_tick(rt_uint8_t mode)
 {
     switch (mode)
     {
@@ -310,7 +310,7 @@ RT_WEAK rt_tick_t pm_timer_next_timeout_tick(rt_uint8_t mode)
  *
  * @return none
  */
-RT_WEAK rt_uint8_t pm_get_sleep_threshold_mode(rt_uint8_t cur_mode, rt_tick_t timeout_tick)
+rt_weak rt_uint8_t pm_get_sleep_threshold_mode(rt_uint8_t cur_mode, rt_tick_t timeout_tick)
 {
     rt_uint8_t sleep_mode = cur_mode;
 
diff --git a/components/drivers/spi/spi_wifi_rw009.c b/components/drivers/spi/spi_wifi_rw009.c
index 20dd6d7f93..39388f10c4 100644
--- a/components/drivers/spi/spi_wifi_rw009.c
+++ b/components/drivers/spi/spi_wifi_rw009.c
@@ -68,12 +68,12 @@ struct rw009_wifi
     struct rt_mailbox rw009_cmd_mb;
     uint32_t last_cmd;
 
-    ALIGN(4)
+    rt_align(4)
     rt_uint8_t spi_tx_mempool[(sizeof(struct spi_data_packet) + 4) * SPI_TX_POOL_SIZE];
-    ALIGN(4)
+    rt_align(4)
     rt_uint8_t spi_rx_mempool[(sizeof(struct spi_data_packet) + 4) * SPI_RX_POOL_SIZE];
 
-    ALIGN(4)
+    rt_align(4)
     uint8_t spi_hw_rx_buffer[MAX_SPI_BUFFER_SIZE];
 
     /* status for RW009 */
diff --git a/components/drivers/usb/usbdevice/class/audio_mic.c b/components/drivers/usb/usbdevice/class/audio_mic.c
index 81170b8a72..afedf2ef2d 100644
--- a/components/drivers/usb/usbdevice/class/audio_mic.c
+++ b/components/drivers/usb/usbdevice/class/audio_mic.c
@@ -88,7 +88,7 @@ struct uac_audio_mic
 };
 static struct uac_audio_mic mic;
 
-ALIGN(4)
+rt_align(4)
 static struct udevice_descriptor dev_desc =
 {
     USB_DESC_LENGTH_DEVICE,     //bLength;
@@ -108,7 +108,7 @@ static struct udevice_descriptor dev_desc =
 };
 
 //FS and HS needed
-ALIGN(4)
+rt_align(4)
 static struct usb_qualifier_descriptor dev_qualifier =
 {
     sizeof(dev_qualifier),          //bLength
@@ -122,7 +122,7 @@ static struct usb_qualifier_descriptor dev_qualifier =
     0,
 };
 
-ALIGN(4)
+rt_align(4)
 const static char *_ustring[] =
 {
     "Language",
@@ -133,7 +133,7 @@ const static char *_ustring[] =
     "Interface",
 };
 
-ALIGN(4)
+rt_align(4)
 static struct uac_ac_descriptor ac_desc =
 {
 #ifdef RT_USB_DEVICE_COMPOSITE
@@ -214,7 +214,7 @@ static struct uac_ac_descriptor ac_desc =
 #endif
 };
 
-ALIGN(4)
+rt_align(4)
 static struct uinterface_descriptor as_desc0 =
 {
     USB_DESC_LENGTH_INTERFACE,
@@ -228,7 +228,7 @@ static struct uinterface_descriptor as_desc0 =
     0x00,
 };
 
-ALIGN(4)
+rt_align(4)
 static struct uac_as_descriptor as_desc =
 {
     /* Interface Descriptor */
diff --git a/components/drivers/usb/usbdevice/class/audio_speaker.c b/components/drivers/usb/usbdevice/class/audio_speaker.c
index 6148478c02..67da8105e4 100644
--- a/components/drivers/usb/usbdevice/class/audio_speaker.c
+++ b/components/drivers/usb/usbdevice/class/audio_speaker.c
@@ -89,7 +89,7 @@ struct uac_audio_speaker
 };
 static struct uac_audio_speaker speaker;
 
-ALIGN(4)
+rt_align(4)
 static struct udevice_descriptor dev_desc =
 {
     USB_DESC_LENGTH_DEVICE,     //bLength;
@@ -109,7 +109,7 @@ static struct udevice_descriptor dev_desc =
 };
 
 //FS and HS needed
-ALIGN(4)
+rt_align(4)
 static struct usb_qualifier_descriptor dev_qualifier =
 {
     sizeof(dev_qualifier),          //bLength
@@ -123,7 +123,7 @@ static struct usb_qualifier_descriptor dev_qualifier =
     0,
 };
 
-ALIGN(4)
+rt_align(4)
 const static char *_ustring[] =
 {
     "Language",
@@ -134,7 +134,7 @@ const static char *_ustring[] =
     "Interface",
 };
 
-ALIGN(4)
+rt_align(4)
 static struct uac_ac_descriptor ac_desc =
 {
 #ifdef RT_USB_DEVICE_COMPOSITE
@@ -214,7 +214,7 @@ static struct uac_ac_descriptor ac_desc =
 #endif
 };
 
-ALIGN(4)
+rt_align(4)
 static struct uinterface_descriptor as_desc0 =
 {
     USB_DESC_LENGTH_INTERFACE,
@@ -228,7 +228,7 @@ static struct uinterface_descriptor as_desc0 =
     0x00,
 };
 
-ALIGN(4)
+rt_align(4)
 static struct uac_as_descriptor as_desc =
 {
     /* Interface Descriptor */
diff --git a/components/drivers/usb/usbdevice/class/cdc_vcom.c b/components/drivers/usb/usbdevice/class/cdc_vcom.c
index 91b49d47de..8eacd9248d 100644
--- a/components/drivers/usb/usbdevice/class/cdc_vcom.c
+++ b/components/drivers/usb/usbdevice/class/cdc_vcom.c
@@ -57,7 +57,7 @@
 #define _SER_NO_LEN 14 /*rt_strlen("32021919830108")*/
 #endif /*RT_VCOM_SER_LEN*/
 
-ALIGN(RT_ALIGN_SIZE)
+rt_align(RT_ALIGN_SIZE)
 static rt_uint8_t vcom_thread_stack[VCOM_TASK_STK_SIZE];
 static struct rt_thread vcom_thread;
 static struct ucdc_line_coding line_coding;
@@ -91,7 +91,7 @@ struct vcom_tx_msg
     rt_size_t size;
 };
 
-ALIGN(4)
+rt_align(4)
 static struct udevice_descriptor dev_desc =
 {
     USB_DESC_LENGTH_DEVICE,     //bLength;
@@ -111,7 +111,7 @@ static struct udevice_descriptor dev_desc =
 };
 
 //FS and HS needed
-ALIGN(4)
+rt_align(4)
 static struct usb_qualifier_descriptor dev_qualifier =
 {
     sizeof(dev_qualifier),          //bLength
@@ -126,7 +126,7 @@ static struct usb_qualifier_descriptor dev_qualifier =
 };
 
 /* communcation interface descriptor */
-ALIGN(4)
+rt_align(4)
 const static struct ucdc_comm_descriptor _comm_desc =
 {
 #ifdef RT_USB_DEVICE_COMPOSITE
@@ -200,7 +200,7 @@ const static struct ucdc_comm_descriptor _comm_desc =
 };
 
 /* data interface descriptor */
-ALIGN(4)
+rt_align(4)
 const static struct ucdc_data_descriptor _data_desc =
 {
     /* interface descriptor */
@@ -234,15 +234,15 @@ const static struct ucdc_data_descriptor _data_desc =
         0x00,
     },
 };
-ALIGN(4)
+rt_align(4)
 static char serno[_SER_NO_LEN + 1] = {'\0'};
-RT_WEAK rt_err_t vcom_get_stored_serno(char *serno, int size);
+rt_weak rt_err_t vcom_get_stored_serno(char *serno, int size);
 
 rt_err_t vcom_get_stored_serno(char *serno, int size)
 {
     return RT_ERROR;
 }
-ALIGN(4)
+rt_align(4)
 const static char* _ustring[] =
 {
     "Language",
diff --git a/components/drivers/usb/usbdevice/class/ecm.c b/components/drivers/usb/usbdevice/class/ecm.c
index 575da357e5..4f41c00531 100644
--- a/components/drivers/usb/usbdevice/class/ecm.c
+++ b/components/drivers/usb/usbdevice/class/ecm.c
@@ -36,13 +36,13 @@ struct rt_ecm_eth
     rt_uint8_t              host_addr[MAX_ADDR_LEN];
     rt_uint8_t              dev_addr[MAX_ADDR_LEN];
 
-    ALIGN(4)
+    rt_align(4)
     rt_uint8_t              rx_pool[512];
-    ALIGN(4)
+    rt_align(4)
     rt_size_t               rx_size;
-    ALIGN(4)
+    rt_align(4)
     rt_size_t               rx_offset;
-    ALIGN(4)
+    rt_align(4)
     char                    rx_buffer[USB_ETH_MTU];
     char                    tx_buffer[USB_ETH_MTU];
 
@@ -51,7 +51,7 @@ struct rt_ecm_eth
 };
 typedef struct rt_ecm_eth * rt_ecm_eth_t;
 
-ALIGN(4)
+rt_align(4)
 static struct udevice_descriptor _dev_desc =
 {
     USB_DESC_LENGTH_DEVICE,     /* bLength */
@@ -71,7 +71,7 @@ static struct udevice_descriptor _dev_desc =
 };
 
 /* communcation interface descriptor */
-ALIGN(4)
+rt_align(4)
 const static struct ucdc_eth_descriptor _comm_desc =
 {
 #ifdef RT_USB_DEVICE_COMPOSITE
@@ -141,7 +141,7 @@ const static struct ucdc_eth_descriptor _comm_desc =
 };
 
 /* data interface descriptor */
-ALIGN(4)
+rt_align(4)
 const static struct ucdc_data_descriptor _data_desc =
 {
     /* interface descriptor */
@@ -176,7 +176,7 @@ const static struct ucdc_data_descriptor _data_desc =
     },
 };
 
-ALIGN(4)
+rt_align(4)
 const static char* _ustring[] =
 {
     "Language",                 /* LANGID */
@@ -187,7 +187,7 @@ const static char* _ustring[] =
     "Interface",                /* INTERFACE */
 };
 
-ALIGN(4)
+rt_align(4)
 //FS and HS needed
 static struct usb_qualifier_descriptor dev_qualifier =
 {
diff --git a/components/drivers/usb/usbdevice/class/hid.c b/components/drivers/usb/usbdevice/class/hid.c
index aa8877e471..a95e1d82e5 100644
--- a/components/drivers/usb/usbdevice/class/hid.c
+++ b/components/drivers/usb/usbdevice/class/hid.c
@@ -31,7 +31,7 @@ struct hid_s
 };
 
 /* CustomHID_ConfigDescriptor */
-ALIGN(4)
+rt_align(4)
 const rt_uint8_t _report_desc[]=
 {
 #ifdef RT_USB_DEVICE_HID_KEYBOARD
@@ -236,7 +236,7 @@ const rt_uint8_t _report_desc[]=
 #endif
 }; /* CustomHID_ReportDescriptor */
 
-ALIGN(4)
+rt_align(4)
 static struct udevice_descriptor _dev_desc =
 {
     USB_DESC_LENGTH_DEVICE,     //bLength;
@@ -256,7 +256,7 @@ static struct udevice_descriptor _dev_desc =
 };
 
 //FS and HS needed
-ALIGN(4)
+rt_align(4)
 static struct usb_qualifier_descriptor dev_qualifier =
 {
     sizeof(dev_qualifier),          //bLength
@@ -272,7 +272,7 @@ static struct usb_qualifier_descriptor dev_qualifier =
 
 
 /* hid interface descriptor */
-ALIGN(4)
+rt_align(4)
 const static struct uhid_comm_descriptor _hid_comm_desc =
 {
 #ifdef RT_USB_DEVICE_COMPOSITE
@@ -361,7 +361,7 @@ const static struct uhid_comm_descriptor _hid_comm_desc =
     },
 };
 
-ALIGN(4)
+rt_align(4)
 const static char* _ustring[] =
 {
     "Language",
@@ -612,11 +612,11 @@ static rt_size_t _hid_write(rt_device_t dev, rt_off_t pos, const void *buffer, r
 
     return 0;
 }
-RT_WEAK void HID_Report_Received(hid_report_t report)
+rt_weak void HID_Report_Received(hid_report_t report)
 {
     dump_report(report);
 }
-ALIGN(RT_ALIGN_SIZE)
+rt_align(RT_ALIGN_SIZE)
 static rt_uint8_t hid_thread_stack[512];
 static struct rt_thread hid_thread;
 
diff --git a/components/drivers/usb/usbdevice/class/mstorage.c b/components/drivers/usb/usbdevice/class/mstorage.c
index 97a189834b..b8f21a29df 100644
--- a/components/drivers/usb/usbdevice/class/mstorage.c
+++ b/components/drivers/usb/usbdevice/class/mstorage.c
@@ -71,7 +71,7 @@ struct mstorage
     struct rt_device_blk_geometry geometry;
 };
 
-ALIGN(4)
+rt_align(4)
 static struct udevice_descriptor dev_desc =
 {
     USB_DESC_LENGTH_DEVICE,     //bLength;
@@ -91,7 +91,7 @@ static struct udevice_descriptor dev_desc =
 };
 
 //FS and HS needed
-ALIGN(4)
+rt_align(4)
 static struct usb_qualifier_descriptor dev_qualifier =
 {
     sizeof(dev_qualifier),          //bLength
@@ -106,7 +106,7 @@ static struct usb_qualifier_descriptor dev_qualifier =
 };
 
 
-ALIGN(4)
+rt_align(4)
 const static struct umass_descriptor _mass_desc =
 {
 #ifdef RT_USB_DEVICE_COMPOSITE
@@ -157,7 +157,7 @@ const static struct umass_descriptor _mass_desc =
     },
 };
 
-ALIGN(4)
+rt_align(4)
 const static char* _ustring[] =
 {
     "Language",
@@ -180,7 +180,7 @@ static rt_size_t _read_10(ufunction_t func, ustorage_cbw_t cbw);
 static rt_size_t _write_10(ufunction_t func, ustorage_cbw_t cbw);
 static rt_size_t _verify_10(ufunction_t func, ustorage_cbw_t cbw);
 
-ALIGN(4)
+rt_align(4)
 static struct scsi_cmd cmd_data[] =
 {
     {SCSI_TEST_UNIT_READY, _test_unit_ready, 6,  FIXED,       0, DIR_NONE},
diff --git a/components/drivers/usb/usbdevice/class/rndis.c b/components/drivers/usb/usbdevice/class/rndis.c
index 69ca3f5d69..425ff62ee1 100644
--- a/components/drivers/usb/usbdevice/class/rndis.c
+++ b/components/drivers/usb/usbdevice/class/rndis.c
@@ -53,20 +53,20 @@ struct rt_rndis_eth
     struct rt_timer timer;
 #endif /* RNDIS_DELAY_LINK_UP */
 
-    ALIGN(4)
+    rt_align(4)
     rt_uint8_t rx_pool[512];
-    ALIGN(4)
+    rt_align(4)
     rt_uint8_t tx_pool[512];
 
     rt_uint32_t cmd_pool[2];
-    ALIGN(4)
+    rt_align(4)
     char rx_buffer[sizeof(struct rndis_packet_msg) + USB_ETH_MTU + 14];
     rt_size_t rx_offset;
     rt_size_t rx_length;
     rt_bool_t rx_flag;
     rt_bool_t rx_frist;
 
-    ALIGN(4)
+    rt_align(4)
     char tx_buffer[sizeof(struct rndis_packet_msg) + USB_ETH_MTU + 14];
     struct rt_semaphore tx_buffer_free;
 
@@ -77,7 +77,7 @@ struct rt_rndis_eth
 typedef struct rt_rndis_eth * rt_rndis_eth_t;
 static rt_uint32_t oid_packet_filter = 0x0000000;
 
-ALIGN(4)
+rt_align(4)
 static struct udevice_descriptor _dev_desc =
 {
     USB_DESC_LENGTH_DEVICE,   /* bLength */
@@ -97,7 +97,7 @@ static struct udevice_descriptor _dev_desc =
 };
 
 /* communcation interface descriptor */
-ALIGN(4)
+rt_align(4)
 const static struct ucdc_comm_descriptor _comm_desc =
 {
 #ifdef RT_USB_DEVICE_COMPOSITE
@@ -171,7 +171,7 @@ const static struct ucdc_comm_descriptor _comm_desc =
 };
 
 /* data interface descriptor */
-ALIGN(4)
+rt_align(4)
 const static struct ucdc_data_descriptor _data_desc =
 {
     /* interface descriptor */
@@ -206,7 +206,7 @@ const static struct ucdc_data_descriptor _data_desc =
     },
 };
 
-ALIGN(4)
+rt_align(4)
 const static char* _ustring[] =
 {
     "Language",                 /* LANGID */
@@ -218,7 +218,7 @@ const static char* _ustring[] =
     USB_STRING_OS
 };
 
-ALIGN(4)
+rt_align(4)
 struct usb_os_function_comp_id_descriptor rndis_func_comp_id_desc =
 {
     .bFirstInterfaceNumber = USB_DYNAMIC,
@@ -229,7 +229,7 @@ struct usb_os_function_comp_id_descriptor rndis_func_comp_id_desc =
 };
 
 //FS and HS needed
-ALIGN(4)
+rt_align(4)
 static struct usb_qualifier_descriptor dev_qualifier =
 {
     sizeof(dev_qualifier),          //bLength
@@ -244,7 +244,7 @@ static struct usb_qualifier_descriptor dev_qualifier =
 };
 
 /* supported OIDs */
-ALIGN(4)
+rt_align(4)
 const static rt_uint32_t oid_supported_list[] =
 {
     /* General OIDs */
diff --git a/components/drivers/usb/usbdevice/class/winusb.c b/components/drivers/usb/usbdevice/class/winusb.c
index b5a169d2cb..4e534399be 100644
--- a/components/drivers/usb/usbdevice/class/winusb.c
+++ b/components/drivers/usb/usbdevice/class/winusb.c
@@ -22,7 +22,7 @@ struct winusb_device
 #define WINUSB_INTF_STR_INDEX 13
 typedef struct winusb_device * winusb_device_t;
 
-ALIGN(4)
+rt_align(4)
 static struct udevice_descriptor dev_desc =
 {
     USB_DESC_LENGTH_DEVICE,     //bLength;
@@ -42,7 +42,7 @@ static struct udevice_descriptor dev_desc =
 };
 
 //FS and HS needed
-ALIGN(4)
+rt_align(4)
 static struct usb_qualifier_descriptor dev_qualifier =
 {
     sizeof(dev_qualifier),          //bLength
@@ -56,7 +56,7 @@ static struct usb_qualifier_descriptor dev_qualifier =
     0,
 };
 
-ALIGN(4)
+rt_align(4)
 struct winusb_descriptor _winusb_desc =
 {
 #ifdef RT_USB_DEVICE_COMPOSITE
@@ -108,7 +108,7 @@ struct winusb_descriptor _winusb_desc =
     },
 };
 
-ALIGN(4)
+rt_align(4)
 const static char* _ustring[] =
 {
     "Language",
@@ -120,13 +120,13 @@ const static char* _ustring[] =
     USB_STRING_OS//must be
 };
 
-ALIGN(4)
+rt_align(4)
 struct usb_os_proerty winusb_proerty[] =
 {
     USB_OS_PROPERTY_DESC(USB_OS_PROPERTY_TYPE_REG_SZ,"DeviceInterfaceGUID",RT_WINUSB_GUID),
 };
 
-ALIGN(4)
+rt_align(4)
 struct usb_os_function_comp_id_descriptor winusb_func_comp_id_desc =
 {
     .bFirstInterfaceNumber = USB_DYNAMIC,
diff --git a/components/drivers/usb/usbdevice/core/usbdevice_core.c b/components/drivers/usb/usbdevice/core/usbdevice_core.c
index 7b3a3ff67d..58d7170012 100644
--- a/components/drivers/usb/usbdevice/core/usbdevice_core.c
+++ b/components/drivers/usb/usbdevice/core/usbdevice_core.c
@@ -2225,7 +2225,7 @@ rt_err_t rt_usbd_event_signal(struct udev_msg* msg)
 }
 
 
-ALIGN(RT_ALIGN_SIZE)
+rt_align(RT_ALIGN_SIZE)
 static rt_uint8_t usb_thread_stack[RT_USBD_THREAD_STACK_SZ];
 static struct rt_thread usb_thread;
 #define USBD_MQ_MSG_SZ  32
diff --git a/components/finsh/finsh.h b/components/finsh/finsh.h
index 73c12b3c34..cf13b761d5 100644
--- a/components/finsh/finsh.h
+++ b/components/finsh/finsh.h
@@ -45,7 +45,7 @@ typedef long (*syscall_func)(void);
                 __TI_FINSH_EXPORT_FUNCTION(__fsym_##cmd);           \
                 const char __fsym_##cmd##_name[] = #cmd;            \
                 const char __fsym_##cmd##_desc[] = #desc;           \
-                RT_USED RT_NOBLOCKED const struct finsh_syscall __fsym_##cmd =           \
+                rt_used RT_NOBLOCKED const struct finsh_syscall __fsym_##cmd =           \
                 {                           \
                     __fsym_##cmd##_name,    \
                     __fsym_##cmd##_desc,    \
@@ -53,9 +53,9 @@ typedef long (*syscall_func)(void);
                 };
 #else
 #define MSH_FUNCTION_EXPORT_CMD(name, cmd, desc)                      \
-                const char __fsym_##cmd##_name[] RT_SECTION(".rodata.name") = #cmd;    \
-                const char __fsym_##cmd##_desc[] RT_SECTION(".rodata.name") = #desc;   \
-                RT_USED const struct finsh_syscall __fsym_##cmd RT_SECTION("FSymTab")= \
+                const char __fsym_##cmd##_name[] rt_section(".rodata.name") = #cmd;    \
+                const char __fsym_##cmd##_desc[] rt_section(".rodata.name") = #desc;   \
+                rt_used const struct finsh_syscall __fsym_##cmd rt_section("FSymTab")= \
                 {                           \
                     __fsym_##cmd##_name,    \
                     __fsym_##cmd##_desc,    \
@@ -88,7 +88,7 @@ typedef long (*syscall_func)(void);
 #else
 #define MSH_FUNCTION_EXPORT_CMD(name, cmd, desc)                      \
                 const char __fsym_##cmd##_name[] = #cmd;                            \
-                RT_USED const struct finsh_syscall __fsym_##cmd RT_SECTION("FSymTab")= \
+                rt_used const struct finsh_syscall __fsym_##cmd rt_section("FSymTab")= \
                 {                                                                   \
                     __fsym_##cmd##_name,                                            \
                     (syscall_func)&name                                             \
diff --git a/components/finsh/shell.c b/components/finsh/shell.c
index fecb4f4af3..321cadd8f9 100644
--- a/components/finsh/shell.c
+++ b/components/finsh/shell.c
@@ -35,7 +35,7 @@
 /* finsh thread */
 #ifndef RT_USING_HEAP
     static struct rt_thread finsh_thread;
-    ALIGN(RT_ALIGN_SIZE)
+    rt_align(RT_ALIGN_SIZE)
     static char finsh_thread_stack[FINSH_THREAD_STACK_SIZE];
     struct finsh_shell _shell;
 #endif
diff --git a/components/legacy/rtlegacy.h b/components/legacy/rtlegacy.h
index 19b7f38209..661925dc0b 100644
--- a/components/legacy/rtlegacy.h
+++ b/components/legacy/rtlegacy.h
@@ -14,11 +14,21 @@
 #include <rtconfig.h>
 #include <rtdef.h>
 
-/* legacy version macros */
+/* rtdef.h */
+
+/* legacy version macros (<5.0.0) */
 #define RT_VERSION              RT_VERSION_MAJOR        /**< major version number */
 #define RT_SUBVERSION           RT_VERSION_MINOR        /**< minor version number */
 #define RT_REVISION             RT_VERSION_PATCH        /**< revise version number */
 
+/* legacy attributes define (<5.0.0) */
+#define RT_SECTION rt_section
+#define RT_WEAK    rt_weak
+#define RT_USED    rt_used
+#ifndef ALIGN
+#define ALIGN      rt_align
+#endif
+
 /* IPC */
 #ifdef RT_USING_DEVICE_IPC
 #include "ipc/workqueue_legacy.h"
diff --git a/components/libc/compilers/armlibc/syscalls.c b/components/libc/compilers/armlibc/syscalls.c
index 74097da58f..f163ab1ad9 100644
--- a/components/libc/compilers/armlibc/syscalls.c
+++ b/components/libc/compilers/armlibc/syscalls.c
@@ -310,7 +310,7 @@ void _ttywrch(int ch)
 }
 
 /* for exit() and abort() */
-RT_WEAK void _sys_exit(int return_code)
+rt_weak void _sys_exit(int return_code)
 {
     extern void __rt_libc_exit(int status);
     __rt_libc_exit(return_code);
diff --git a/components/libc/compilers/common/ctime.c b/components/libc/compilers/common/ctime.c
index ace480a54b..eb755e2263 100644
--- a/components/libc/compilers/common/ctime.c
+++ b/components/libc/compilers/common/ctime.c
@@ -63,8 +63,8 @@ static const short __spm[13] =
     (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 ";
+rt_align(4) static const char *days = "Sun Mon Tue Wed Thu Fri Sat ";
+rt_align(4) static const char *months = "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ";
 
 static int __isleap(int year)
 {
@@ -346,7 +346,7 @@ RTM_EXPORT(strftime); /* inherent in the toolchain */
  *         If timer is not a NULL pointer, the return value is also stored in timer.
  *
  */
-RT_WEAK time_t time(time_t *t)
+rt_weak time_t time(time_t *t)
 {
     struct timeval now;
 
@@ -366,7 +366,7 @@ RT_WEAK time_t time(time_t *t)
 }
 RTM_EXPORT(time);
 
-RT_WEAK clock_t clock(void)
+rt_weak clock_t clock(void)
 {
     return rt_tick_get();
 }
diff --git a/components/libc/cplusplus/cxx_crt_init.c b/components/libc/cplusplus/cxx_crt_init.c
index 46946089ff..9e5262c101 100644
--- a/components/libc/cplusplus/cxx_crt_init.c
+++ b/components/libc/cplusplus/cxx_crt_init.c
@@ -16,25 +16,25 @@
 #if defined(__ARMCC_VERSION)
 extern void $Super$$__cpp_initialize__aeabi_(void);
 /* we need to change the cpp_initialize order */
-RT_WEAK void $Sub$$__cpp_initialize__aeabi_(void)
+rt_weak void $Sub$$__cpp_initialize__aeabi_(void)
 {
     /* empty */
 }
 #elif defined(__GNUC__) && !defined(__CS_SOURCERYGXX_MAJ__)
 /* The _init()/_fini() routines has been defined in codesourcery g++ lite */
-RT_WEAK void _init()
+rt_weak void _init()
 {
 }
 
-RT_WEAK void _fini()
+rt_weak void _fini()
 {
 }
 
-RT_WEAK void *__dso_handle = 0;
+rt_weak void *__dso_handle = 0;
 
 #endif
 
-RT_WEAK int cplusplus_system_init(void)
+rt_weak int cplusplus_system_init(void)
 {
 #if defined(__ARMCC_VERSION)
     /* If there is no SHT$$INIT_ARRAY, calling
diff --git a/components/lwp/lwp.c b/components/lwp/lwp.c
index 7dafed6a35..9e4dccd14a 100644
--- a/components/lwp/lwp.c
+++ b/components/lwp/lwp.c
@@ -970,7 +970,7 @@ _exit:
 }
 #endif /* ARCH_MM_MMU */
 
-RT_WEAK int lwp_load(const char *filename, struct rt_lwp *lwp, uint8_t *load_addr, size_t addr_size, struct process_aux *aux)
+rt_weak int lwp_load(const char *filename, struct rt_lwp *lwp, uint8_t *load_addr, size_t addr_size, struct process_aux *aux)
 {
     uint8_t *ptr;
     int ret = -1;
diff --git a/components/lwp/lwp_avl.c b/components/lwp/lwp_avl.c
index 71eb089264..d9996eae3e 100644
--- a/components/lwp/lwp_avl.c
+++ b/components/lwp/lwp_avl.c
@@ -208,7 +208,7 @@ int lwp_avl_traversal(struct lwp_avl_struct *ptree, int (*fun)(struct lwp_avl_st
     return ret;
 }
 
-RT_WEAK struct lwp_avl_struct* lwp_map_find_first(struct lwp_avl_struct* ptree)
+rt_weak struct lwp_avl_struct* lwp_map_find_first(struct lwp_avl_struct* ptree)
 {
     if (ptree == AVL_EMPTY)
     {
diff --git a/components/lwp/lwp_syscall.c b/components/lwp/lwp_syscall.c
index 0c49e3c960..a3e2002851 100644
--- a/components/lwp/lwp_syscall.c
+++ b/components/lwp/lwp_syscall.c
@@ -1599,7 +1599,7 @@ fail:
     return GET_ERRNO();
 }
 
-RT_WEAK long sys_clone(void *arg[])
+rt_weak long sys_clone(void *arg[])
 {
     return _sys_clone(arg);
 }
@@ -1829,12 +1829,12 @@ size_t lwp_user_strlen(const char *s, int *err)
 
 /* arm needs to wrap fork/clone call to preserved lr & caller saved regs */
 
-RT_WEAK int sys_fork(void)
+rt_weak int sys_fork(void)
 {
     return _sys_fork();
 }
 
-RT_WEAK int sys_vfork(void)
+rt_weak int sys_vfork(void)
 {
     return sys_fork();
 }
diff --git a/components/lwp/page.c b/components/lwp/page.c
index 5cf63be5e0..5dccd5fe34 100644
--- a/components/lwp/page.c
+++ b/components/lwp/page.c
@@ -37,7 +37,7 @@ static size_t page_nr;
 
 static struct page *page_list[ARCH_PAGE_LIST_SIZE];
 
-RT_WEAK int rt_hw_clz(size_t n)
+rt_weak int rt_hw_clz(size_t n)
 {
     int bits = sizeof(size_t) * 8;
 
@@ -66,7 +66,7 @@ RT_WEAK int rt_hw_clz(size_t n)
     return bits - n;
 }
 
-RT_WEAK int rt_hw_ctz(size_t n)
+rt_weak int rt_hw_ctz(size_t n)
 {
     int ret = sizeof(size_t) * 8;
 
diff --git a/components/net/at/include/at.h b/components/net/at/include/at.h
index 0a385058a0..aec11372dd 100644
--- a/components/net/at/include/at.h
+++ b/components/net/at/include/at.h
@@ -51,7 +51,7 @@ extern "C" {
 #endif
 
 #define AT_CMD_EXPORT(_name_, _args_expr_, _test_, _query_, _setup_, _exec_)   \
-    RT_USED static const struct at_cmd __at_cmd_##_test_##_query_##_setup_##_exec_ RT_SECTION("RtAtCmdTab") = \
+    rt_used static const struct at_cmd __at_cmd_##_test_##_query_##_setup_##_exec_ rt_section("RtAtCmdTab") = \
     {                                                                          \
         _name_,                                                                \
         _args_expr_,                                                           \
diff --git a/components/net/at/src/at_server.c b/components/net/at/src/at_server.c
index 5d6a63fd98..9e5d9174b1 100644
--- a/components/net/at/src/at_server.c
+++ b/components/net/at/src/at_server.c
@@ -638,12 +638,12 @@ __exit:
 }
 INIT_COMPONENT_EXPORT(at_server_init);
 
-RT_WEAK void at_port_reset(void)
+rt_weak void at_port_reset(void)
 {
     LOG_E("The reset for AT server is not implement.");
 }
 
-RT_WEAK void at_port_factory_reset(void)
+rt_weak void at_port_factory_reset(void)
 {
     LOG_E("The factory reset for AT server is not implement.");
 }
diff --git a/components/net/at/src/at_utils.c b/components/net/at/src/at_utils.c
index 736d567dfa..9ffaab199c 100644
--- a/components/net/at/src/at_utils.c
+++ b/components/net/at/src/at_utils.c
@@ -65,7 +65,7 @@ const char *at_get_last_cmd(rt_size_t *cmd_size)
     return send_buf;
 }
 
-RT_WEAK rt_size_t at_utils_send(rt_device_t dev,
+rt_weak rt_size_t at_utils_send(rt_device_t dev,
                                 rt_off_t    pos,
                                 const void *buffer,
                                 rt_size_t   size)
diff --git a/components/net/lwip/port/sys_arch.c b/components/net/lwip/port/sys_arch.c
index 709028ee25..145958a0fb 100644
--- a/components/net/lwip/port/sys_arch.c
+++ b/components/net/lwip/port/sys_arch.c
@@ -539,7 +539,7 @@ u32_t sys_now(void)
     return rt_tick_get_millisecond();
 }
 
-RT_WEAK void mem_init(void)
+rt_weak void mem_init(void)
 {
 }
 
diff --git a/components/net/netdev/src/netdev_ipaddr.c b/components/net/netdev/src/netdev_ipaddr.c
index afb6d1d962..dd12ee81cf 100644
--- a/components/net/netdev/src/netdev_ipaddr.c
+++ b/components/net/netdev/src/netdev_ipaddr.c
@@ -263,7 +263,7 @@ in_addr_t netdev_ipaddr_addr(const char *cp)
 
 #if NETDEV_IPV6
 
-RT_WEAK const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
+rt_weak const struct in6_addr in6addr_any = IN6ADDR_ANY_INIT;
 
 /**
  * Check whether "cp" is a valid ascii representation
diff --git a/components/utilities/ulog/syslog/syslog.c b/components/utilities/ulog/syslog/syslog.c
index d5f31b0c18..474a524b89 100644
--- a/components/utilities/ulog/syslog/syslog.c
+++ b/components/utilities/ulog/syslog/syslog.c
@@ -168,7 +168,7 @@ static const char *get_month_str(uint8_t month)
     }
 }
 
-RT_WEAK rt_size_t syslog_formater(char *log_buf, int level, const char *tag, rt_bool_t newline, const char *format, va_list args)
+rt_weak rt_size_t syslog_formater(char *log_buf, int level, const char *tag, rt_bool_t newline, const char *format, va_list args)
 {
     extern rt_size_t ulog_strcpy(rt_size_t cur_len, char *dst, const char *src);
 
diff --git a/components/utilities/ulog/ulog.c b/components/utilities/ulog/ulog.c
index 430ead3f1c..539f7ef24c 100644
--- a/components/utilities/ulog/ulog.c
+++ b/components/utilities/ulog/ulog.c
@@ -246,7 +246,7 @@ static char *get_log_buf(void)
     }
 }
 
-RT_WEAK rt_size_t ulog_head_formater(char *log_buf, rt_uint32_t level, const char *tag)
+rt_weak rt_size_t ulog_head_formater(char *log_buf, rt_uint32_t level, const char *tag)
 {
     /* the caller has locker, so it can use static variable for reduce stack usage */
     static rt_size_t log_len;
@@ -371,7 +371,7 @@ RT_WEAK rt_size_t ulog_head_formater(char *log_buf, rt_uint32_t level, const cha
 }
 
 
-RT_WEAK rt_size_t ulog_tail_formater(char *log_buf, rt_size_t log_len, rt_bool_t newline, rt_uint32_t level)
+rt_weak rt_size_t ulog_tail_formater(char *log_buf, rt_size_t log_len, rt_bool_t newline, rt_uint32_t level)
 {
     /* the caller has locker, so it can use static variable for reduce stack usage */
     static rt_size_t newline_len;
@@ -418,7 +418,7 @@ RT_WEAK rt_size_t ulog_tail_formater(char *log_buf, rt_size_t log_len, rt_bool_t
     return log_len;
 }
 
-RT_WEAK rt_size_t ulog_formater(char *log_buf, rt_uint32_t level, const char *tag, rt_bool_t newline,
+rt_weak rt_size_t ulog_formater(char *log_buf, rt_uint32_t level, const char *tag, rt_bool_t newline,
         const char *format, va_list args)
 {
     /* the caller has locker, so it can use static variable for reduce stack usage */
@@ -446,7 +446,7 @@ RT_WEAK rt_size_t ulog_formater(char *log_buf, rt_uint32_t level, const char *ta
     return ulog_tail_formater(log_buf, log_len, newline, level);
 }
 
-RT_WEAK rt_size_t ulog_hex_formater(char *log_buf, const char *tag, const rt_uint8_t *buf, rt_size_t size, rt_size_t width, rt_base_t addr)
+rt_weak rt_size_t ulog_hex_formater(char *log_buf, const char *tag, const rt_uint8_t *buf, rt_size_t size, rt_size_t width, rt_base_t addr)
 {
 #define __is_print(ch)       ((unsigned int)((ch) - ' ') < 127u - ' ')
     /* the caller has locker, so it can use static variable for reduce stack usage */
diff --git a/components/utilities/utest/utest.h b/components/utilities/utest/utest.h
index 33d50efddb..41859612e2 100644
--- a/components/utilities/utest/utest.h
+++ b/components/utilities/utest/utest.h
@@ -137,8 +137,8 @@ utest_t utest_handle_get(void);
  *
 */
 #define UTEST_TC_EXPORT(testcase, name, init, cleanup, timeout)                \
-    RT_USED static const struct utest_tc_export _utest_testcase                \
-    RT_SECTION("UtestTcTab") =                                                    \
+    rt_used static const struct utest_tc_export _utest_testcase                \
+    rt_section("UtestTcTab") =                                                    \
     {                                                                          \
         name,                                                                  \
         timeout,                                                               \
diff --git a/components/utilities/var_export/var_export.c b/components/utilities/var_export/var_export.c
index e4146d6ff8..abc412a682 100644
--- a/components/utilities/var_export/var_export.c
+++ b/components/utilities/var_export/var_export.c
@@ -21,22 +21,22 @@ static rt_size_t ve_exporter_num = 0;
 
 /* for ARM C and IAR Compiler */
 #if defined(__ARMCC_VERSION) || defined (__ICCARM__) || defined(__ICCRX__)
-static RT_USED const struct ve_exporter __ve_table_start
-RT_SECTION("0.""VarExpTab") = {"ve_start", "ve_start", 0};
+static rt_used const struct ve_exporter __ve_table_start
+rt_section("0.""VarExpTab") = {"ve_start", "ve_start", 0};
 
-static RT_USED const struct ve_exporter __ve_table_end
-RT_SECTION("2.""VarExpTab") = {"ve_end", "ve_end", 2};
+static rt_used const struct ve_exporter __ve_table_end
+rt_section("2.""VarExpTab") = {"ve_end", "ve_end", 2};
 #endif
 
 /* for MS VC++ compiler */
 #if defined(_MSC_VER)
 #pragma section("VarExpTab$a", read)
 __declspec(allocate("VarExpTab$a"))
-RT_USED const struct ve_exporter __ve_table_start = { "ve_start", "ve_start", 0};
+rt_used const struct ve_exporter __ve_table_start = { "ve_start", "ve_start", 0};
 
 #pragma section("VarExpTab$z", read)
 __declspec(allocate("VarExpTab$z"))
-RT_USED const struct ve_exporter __ve_table_end = { "ve_end", "ve_end", 2};
+rt_used const struct ve_exporter __ve_table_end = { "ve_end", "ve_end", 2};
 
 /* Find var objects in VarExpTab segments */
 static int ve_init_find_obj(unsigned int *begin, unsigned int *end, ve_exporter_t *table)
diff --git a/components/utilities/var_export/var_export.h b/components/utilities/var_export/var_export.h
index b0e2e88b3f..f4ca9122bb 100644
--- a/components/utilities/var_export/var_export.h
+++ b/components/utilities/var_export/var_export.h
@@ -44,10 +44,10 @@ typedef struct ve_iterator ve_iterator_t;
 /* exporter's export command */
 #if defined(__ARMCC_VERSION) || defined(__IAR_SYSTEMS_ICC__)
 #define VAR_EXPORT(module, identi, value)                                       \
-    const char _vexp_##identi##_module[] RT_SECTION(".rodata.vexp") = #module;  \
-    const char _vexp_##identi##_identi[] RT_SECTION(".rodata.vexp") = #identi;  \
-    RT_USED const struct ve_exporter _vexp_##module##identi                     \
-    RT_SECTION("1."#module".VarExpTab."#identi) =                               \
+    const char _vexp_##identi##_module[] rt_section(".rodata.vexp") = #module;  \
+    const char _vexp_##identi##_identi[] rt_section(".rodata.vexp") = #identi;  \
+    rt_used const struct ve_exporter _vexp_##module##identi                     \
+    rt_section("1."#module".VarExpTab."#identi) =                               \
     {                                                                           \
         _vexp_##identi##_module,                                                \
         _vexp_##identi##_identi,                                                \
@@ -55,10 +55,10 @@ typedef struct ve_iterator ve_iterator_t;
     }
 #elif defined(__GNUC__)
 #define VAR_EXPORT(module, identi, value)                                       \
-    const char _vexp_##identi##_module[] RT_SECTION(".rodata.vexp") = #module;  \
-    const char _vexp_##identi##_identi[] RT_SECTION(".rodata.vexp") = #identi;  \
-    RT_USED const struct ve_exporter _vexp_##module##identi                     \
-    RT_SECTION(#module".VarExpTab."#identi) =                                   \
+    const char _vexp_##identi##_module[] rt_section(".rodata.vexp") = #module;  \
+    const char _vexp_##identi##_identi[] rt_section(".rodata.vexp") = #identi;  \
+    rt_used const struct ve_exporter _vexp_##module##identi                     \
+    rt_section(#module".VarExpTab."#identi) =                                   \
     {                                                                           \
         _vexp_##identi##_module,                                                \
         _vexp_##identi##_identi,                                                \
@@ -67,10 +67,10 @@ typedef struct ve_iterator ve_iterator_t;
 #elif defined(_MSC_VER)
 #pragma section("VarExpTab$f",read)
 #define VAR_EXPORT(module, identi, value)                                       \
-    const char _vexp_##identi##_module[] RT_SECTION(".rodata.vexp") = #module;  \
-    const char _vexp_##identi##_identi[] RT_SECTION(".rodata.vexp") = #identi;  \
+    const char _vexp_##identi##_module[] rt_section(".rodata.vexp") = #module;  \
+    const char _vexp_##identi##_identi[] rt_section(".rodata.vexp") = #identi;  \
     __declspec(allocate("VarExpTab$f"))                                         \
-    RT_USED const struct ve_exporter _vexp_##module##identi =                   \
+    rt_used const struct ve_exporter _vexp_##module##identi =                   \
     {                                                                           \
         _vexp_##identi##_module,                                                \
         _vexp_##identi##_identi,                                                \
diff --git a/components/vmm/vmm.c b/components/vmm/vmm.c
index 709f947b4e..b37bc4389c 100644
--- a/components/vmm/vmm.c
+++ b/components/vmm/vmm.c
@@ -22,9 +22,9 @@
 extern void rt_hw_interrupt_init(void);
 extern void rt_application_init(void);
 
-void vmm_entry(struct vmm_entry_param* param) RT_SECTION(".vmm_init");
+void vmm_entry(struct vmm_entry_param* param) rt_section(".vmm_init");
 
-struct rt_thread vmm_thread RT_SECTION(".bss.share.vmm");
+struct rt_thread vmm_thread rt_section(".bss.share.vmm");
 extern rt_uint8_t vmm_stack_start;
 extern rt_uint8_t vmm_stack_end;
 
@@ -75,7 +75,7 @@ static void vmm_entry_glue(rt_uint32_t level,
                            unsigned int kernel_domain)
     /* inline would make the section setting meaningless */
     __attribute__((noinline))
-    RT_SECTION(".vmm_glue");
+    rt_section(".vmm_glue");
 static void vmm_entry_glue(rt_uint32_t level,
                            unsigned int vmm_domain,
                            unsigned int kernel_domain)
diff --git a/components/vmm/vmm_context.c b/components/vmm/vmm_context.c
index bf8f2a058e..8cb502da75 100644
--- a/components/vmm/vmm_context.c
+++ b/components/vmm/vmm_context.c
@@ -18,7 +18,7 @@
 
 #include "vmm_context.h"
 
-struct rt_vmm_share_layout rt_vmm_share RT_SECTION(".vmm.share");
+struct rt_vmm_share_layout rt_vmm_share rt_section(".vmm.share");
 
 volatile struct vmm_context *_vmm_context = RT_NULL;
 
@@ -31,13 +31,13 @@ void vmm_context_init(void *context_addr)
 }
 
 #ifdef RT_VMM_USING_DOMAIN
-unsigned long guest_domain_val RT_SECTION(".bss.share");
-unsigned long vmm_domain_val RT_SECTION(".bss.share");
+unsigned long guest_domain_val rt_section(".bss.share");
+unsigned long vmm_domain_val rt_section(".bss.share");
 /* some RT-Thread code need to be called in the guest
  * context(rt_thread_idle_excute for example). To simplify the code, we need a
  * "super" domain mode to have access of both side. The code executed in super
  * domain mode is restricted and should be harmless. */
-unsigned long super_domain_val RT_SECTION(".bss.share");
+unsigned long super_domain_val rt_section(".bss.share");
 void vmm_context_init_domain(struct vmm_domain *domain)
 {
     asm volatile ("mrc p15, 0, %0, c3, c0\n" : "=r" (guest_domain_val));