From eaa3454bbece542d43b9470f7bb65198ee395d75 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 20 Feb 2021 11:31:58 +0800
Subject: [PATCH 1/3] =?UTF-8?q?=E4=BC=98=E5=8C=96abort=E5=87=BD=E6=95=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 components/libc/compilers/armlibc/syscalls.c |  1 +
 components/libc/compilers/common/stdlib.c    | 15 +--------------
 components/libc/compilers/dlib/syscalls.c    | 10 ++--------
 components/libc/compilers/newlib/syscalls.c  | 11 ++---------
 4 files changed, 6 insertions(+), 31 deletions(-)

diff --git a/components/libc/compilers/armlibc/syscalls.c b/components/libc/compilers/armlibc/syscalls.c
index 37f296fc3a..d17460b413 100644
--- a/components/libc/compilers/armlibc/syscalls.c
+++ b/components/libc/compilers/armlibc/syscalls.c
@@ -256,6 +256,7 @@ void _ttywrch(int ch)
 #endif
 }
 
+/* for exit() and abort() */
 RT_WEAK void _sys_exit(int return_code)
 {
     extern void __rt_libc_exit(int status);
diff --git a/components/libc/compilers/common/stdlib.c b/components/libc/compilers/common/stdlib.c
index b485bbd836..9f801ab966 100644
--- a/components/libc/compilers/common/stdlib.c
+++ b/components/libc/compilers/common/stdlib.c
@@ -9,7 +9,6 @@
  */
 
 #include <rtthread.h>
-#include <stdlib.h>
 
 void __rt_libc_exit(int status)
 {
@@ -24,24 +23,12 @@ void __rt_libc_exit(int status)
 
     if (self != RT_NULL)
     {
-        if(status == EXIT_FAILURE) /* abort() */
-        {
-            rt_kprintf("thread:%s abort!\n", self->name);
-        }
-        else /* exit() */
-        {
-            rt_kprintf("thread:%s exit:%d!\n", self->name, status);
-        }
+        rt_kprintf("thread:%s exit:%d!\n", self->name, status);
         rt_thread_suspend(self);
         rt_schedule();
     }
 }
 
-void __rt_libc_abort(void)
-{
-    __rt_libc_exit(EXIT_FAILURE);
-}
-
 int __rt_libc_system(const char *string)
 {
     /* TODO */
diff --git a/components/libc/compilers/dlib/syscalls.c b/components/libc/compilers/dlib/syscalls.c
index 10155948ba..346a766d53 100644
--- a/components/libc/compilers/dlib/syscalls.c
+++ b/components/libc/compilers/dlib/syscalls.c
@@ -9,16 +9,10 @@
  */
 #include <rtthread.h>
 
-void exit (int status)
+/* for exit() and abort() */
+void __exit (int status)
 {
     extern void __rt_libc_exit(int status);
     __rt_libc_exit(status);
     while(1);
 }
-
-void abort(void)
-{
-    extern void __rt_libc_abort(void);
-    __rt_libc_abort();
-    while(1);
-}
diff --git a/components/libc/compilers/newlib/syscalls.c b/components/libc/compilers/newlib/syscalls.c
index 76300f76b2..916922a7fe 100644
--- a/components/libc/compilers/newlib/syscalls.c
+++ b/components/libc/compilers/newlib/syscalls.c
@@ -283,8 +283,8 @@ _free_r (struct _reent *ptr, void *addr)
     rt_free (addr);
 }
 
-void
-exit (int status)
+__attribute__ ((noreturn)) void
+_exit (int status)
 {
     extern void __rt_libc_exit(int status);
     __rt_libc_exit(status);
@@ -303,13 +303,6 @@ void __libc_init_array(void)
     /* we not use __libc init_aray to initialize C++ objects */
 }
 
-void abort(void)
-{
-    extern void __rt_libc_abort(void);
-    __rt_libc_abort();
-    while(1);
-}
-
 uid_t getuid(void)
 {
     return 0;

From 0ce0e2c234601712b3ae5ae6fddd5d862d202f18 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 20 Feb 2021 11:35:41 +0800
Subject: [PATCH 2/3] update

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

diff --git a/components/libc/compilers/newlib/syscalls.c b/components/libc/compilers/newlib/syscalls.c
index 916922a7fe..aee8ac360d 100644
--- a/components/libc/compilers/newlib/syscalls.c
+++ b/components/libc/compilers/newlib/syscalls.c
@@ -283,6 +283,7 @@ _free_r (struct _reent *ptr, void *addr)
     rt_free (addr);
 }
 
+/* for exit() and abort() */
 __attribute__ ((noreturn)) void
 _exit (int status)
 {

From ae2d414ca1580fc4ae8ab5618db01cb75af4d425 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Sat, 20 Feb 2021 11:57:41 +0800
Subject: [PATCH 3/3] add system() for IAR

---
 components/libc/compilers/dlib/syscalls.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/components/libc/compilers/dlib/syscalls.c b/components/libc/compilers/dlib/syscalls.c
index 346a766d53..007ea76bd1 100644
--- a/components/libc/compilers/dlib/syscalls.c
+++ b/components/libc/compilers/dlib/syscalls.c
@@ -6,6 +6,7 @@
  * Change Logs:
  * Date           Author       Notes
  * 2021-02-13     Meco Man     implement exit() and abort()
+ * 2021-02-20     Meco Man     add system()
  */
 #include <rtthread.h>
 
@@ -16,3 +17,9 @@ void __exit (int status)
     __rt_libc_exit(status);
     while(1);
 }
+
+int system(const char * string)
+{
+    extern int __rt_libc_system(const char *string);
+    return __rt_libc_system(string);
+}