43 lines
913 B
C
43 lines
913 B
C
#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 */
|
|
weak_alias(dummy, __funcs_on_exit);
|
|
weak_alias(dummy, __flush_on_exit);
|
|
weak_alias(dummy, __seek_on_exit);
|
|
|
|
#ifndef SHARED
|
|
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();
|
|
|
|
#ifndef SHARED
|
|
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();
|
|
|
|
_Exit(code);
|
|
for(;;);
|
|
}
|