GCN: Implement '_exit' instead of 'exit'

... so that all of 'exit', '_exit', '_Exit' work.  'exit' thus becomes the
standard 'newlib/libc/stdlib/exit.c'.  (Getting 'atexit' functional needs
further work elsewhere.)

See also commit 5841b2f6a4208682264d03e3edfa0a09881932a6
"nvptx: Implement '_exit' instead of 'exit'".

3 files changed, 4 insertions, 5 deletions

diff --git a/newlib/libc/machine/amdgcn/Makefile.inc b/newlib/libc/machine/amdgcn/Makefile.inc
index d26603aa8..e1fc5ae4d 100644
--- a/newlib/libc/machine/amdgcn/Makefile.inc
+++ b/newlib/libc/machine/amdgcn/Makefile.inc
@@ -1,6 +1,6 @@
 libc_a_SOURCES += \
+	%D%/_exit.c \
 	%D%/abort.c \
-	%D%/exit.c \
 	%D%/atexit.c \
 	%D%/mlock.c \
 	%D%/getreent.c \
diff --git a/newlib/libc/machine/amdgcn/exit.c b/newlib/libc/machine/amdgcn/_exit.c
index bdd532edd..82171aff9 100644
--- a/newlib/libc/machine/amdgcn/exit.c
+++ b/newlib/libc/machine/amdgcn/_exit.c
@@ -13,11 +13,11 @@
  * they apply.
  */
 
-#include <stdlib.h>
+#include <unistd.h>
 #include "exit-value.h"
 
 void __attribute__((noreturn))
-exit (int val)
+_exit (int val)
 {
   exit_with_status_and_signal (val, 0);
 }
diff --git a/newlib/libc/machine/amdgcn/atexit.c b/newlib/libc/machine/amdgcn/atexit.c
index 674571435..8ddd92cfa 100644
--- a/newlib/libc/machine/amdgcn/atexit.c
+++ b/newlib/libc/machine/amdgcn/atexit.c
@@ -18,8 +18,7 @@
 int
 atexit (void (*function)(void))
 {
-  /* Our current implementation of exit does not run functions registered with
-     atexit, so fail here.  */
+  /* Fail here.  */
   abort ();
   return 1;
 }