unify static and dynamic libc init/fini code paths

use weak definitions that the dynamic linker can override instead of
preprocessor conditionals on SHARED so that the same libc start and
exit code can be used for both static and dynamic linking.

1 files changed, 10 insertions, 10 deletions

diff --git a/src/exit/exit.c b/src/exit/exit.c
index 163d8f1b..b391f338 100644
--- a/src/exit/exit.c
+++ b/src/exit/exit.c
@@ -11,24 +11,24 @@ static void dummy()
 weak_alias(dummy, __funcs_on_exit);
 weak_alias(dummy, __stdio_exit);
 
-#ifndef SHARED
-weak_alias(dummy, _fini);
+extern void _fini() __attribute__((weak));
 extern void (*const __fini_array_start)() __attribute__((weak));
 extern void (*const __fini_array_end)() __attribute__((weak));
-#endif
 
-_Noreturn void exit(int code)
+static void libc_exit_fini(void)
 {
-	__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
+	if (_fini) _fini();
+}
 
-	__stdio_exit();
+weak_alias(libc_exit_fini, __libc_exit_fini);
 
+_Noreturn void exit(int code)
+{
+	__funcs_on_exit();
+	__libc_exit_fini();
+	__stdio_exit();
 	_Exit(code);
 }