#include <stdlib.h>
#include <stdint.h>
#include "libc.h"
-#include "atomic.h"
-#include "syscall.h"
static void dummy()
{
}
-/* __toread.c, __towrite.c, and atexit.c override these */
+/* atexit.c and __stdio_exit.c override these. the latter is linked
+ * as a consequence of linking either __toread.c or __towrite.c. */
weak_alias(dummy, __funcs_on_exit);
-weak_alias(dummy, __flush_on_exit);
-weak_alias(dummy, __seek_on_exit);
-
-#ifndef SHARED
+weak_alias(dummy, __stdio_exit);
weak_alias(dummy, _fini);
-extern void (*const __fini_array_start)() __attribute__((weak));
-extern void (*const __fini_array_end)() __attribute__((weak));
-#endif
-
-_Noreturn void exit(int code)
-{
- static int lock;
-
- /* If more than one thread calls exit, hang until _Exit ends it all */
- while (a_swap(&lock, 1)) __syscall(SYS_pause);
- __funcs_on_exit();
+extern weak hidden void (*const __fini_array_start)(void), (*const __fini_array_end)(void);
-#ifndef SHARED
+static void libc_exit_fini(void)
+{
uintptr_t a = (uintptr_t)&__fini_array_end;
for (; a>(uintptr_t)&__fini_array_start; a-=sizeof(void(*)()))
(*(void (**)())(a-sizeof(void(*)())))();
_fini();
-#endif
+}
- __flush_on_exit();
- __seek_on_exit();
+weak_alias(libc_exit_fini, __libc_exit_fini);
+_Noreturn void exit(int code)
+{
+ __funcs_on_exit();
+ __libc_exit_fini();
+ __stdio_exit();
_Exit(code);
- for(;;);
}