summaryrefslogtreecommitdiff
path: root/libc/misc/internals
diff options
context:
space:
mode:
Diffstat (limited to 'libc/misc/internals')
-rw-r--r--libc/misc/internals/__uClibc_main.c77
1 files changed, 21 insertions, 56 deletions
diff --git a/libc/misc/internals/__uClibc_main.c b/libc/misc/internals/__uClibc_main.c
index 35a57c6a9..81cc57d94 100644
--- a/libc/misc/internals/__uClibc_main.c
+++ b/libc/misc/internals/__uClibc_main.c
@@ -13,62 +13,25 @@
#define _ERRNO_H
#include <unistd.h>
+#include <stdlib.h>
-#if !defined HAVE_ELF
-/* This is a theoretical attempt to support old a.out compilers.
- * Dunno if this will work properly and I really don't much
- * care... Elf is the One True Path(tm). You will be assimilated */
-# define __USE_WEAK_ALIASES
-#endif
/*
* Prototypes.
*/
-extern int main(int argc, char **argv, char **envp);
-#ifndef __USE_WEAK_ALIASES
-#include <stdlib.h>
-extern int weak_function atexit(void (*function)(void));
+extern int main(int argc, char **argv, char **envp);
extern void weak_function _init(void);
extern void weak_function _fini(void);
extern void weak_function _stdio_init(void);
-extern void weak_function _stdio_term(void);
extern int *weak_const_function __errno_location(void);
extern int *weak_const_function __h_errno_location(void);
+extern int weak_function atexit(void (*function)(void));
#ifdef __UCLIBC_HAS_LOCALE__
extern void weak_function _locale_init(void);
#endif
-#else
-/*
- * Define an empty function and use it as a weak alias for the stdio
- * initialization routine. That way we don't pull in all the stdio
- * code unless we need to. Similarly, do the same for _stdio_term
- * so as not to include atexit unnecessarily.
- *
- * NOTE!!! This is only true for the _static_ case!!!
- */
-weak_alias(__environ, environ);
-void __uClibc_empty_func(void)
-{
-}
-extern void exit (int status) __attribute__ ((__noreturn__));
-extern void _init(void);
-extern void _fini(void);
-extern void _stdio_init(void);
-weak_alias(__uClibc_empty_func, _init);
-weak_alias(__uClibc_empty_func, _fini);
-//weak_alias(__uClibc_empty_func, _stdio_init);
-//weak_alias(__uClibc_empty_func, _stdio_term);
-//weak_alias(__uClibc_empty_func, atexit);
-extern int atexit(void (*function)(void));
-//weak_alias(__uClibc_empty_func, __errno_location);
-extern int *__errno_location(void);
-//weak_alias(__uClibc_empty_func, __h_errno_location);
-extern int *__h_errno_location(void);
-#ifdef __UCLIBC_HAS_LOCALE__
-extern void _locale_init(void);
-#endif
-#endif
+
+
/*
* Declare the __environ global variable and create a weak alias environ.
@@ -80,16 +43,18 @@ char **__environ = 0;
weak_alias(__environ, environ);
-/*
- * Now for our main routine.
- */
+
+
void __attribute__ ((__noreturn__))
__uClibc_main(int argc, char **argv, char **envp)
{
- /*
- * Initialize the global variable __environ.
- */
- __environ = envp;
+ /* If we are dynamically linked the shared lib loader
+ * already did this for us. But if we are statically
+ * linked, we need to do this for ourselves. */
+ if (__environ==NULL) {
+ /* Statically linked. */
+ __environ = envp;
+ }
#if 0
/* Some security at this point. Prevent starting a SUID binary
@@ -97,7 +62,7 @@ __uClibc_main(int argc, char **argv, char **envp)
* to do this only for statically linked applications since
* otherwise the dynamic loader did the work already. */
if (unlikely (__libc_enable_secure!=NULL))
- __libc_check_standard_fds ();
+ __libc_check_standard_fds ();
#endif
#ifdef __UCLIBC_HAS_LOCALE__
@@ -110,15 +75,16 @@ __uClibc_main(int argc, char **argv, char **envp)
* be bypassed if not needed because of the weak alias above.
*/
if (likely(_stdio_init != NULL))
- _stdio_init();
+ _stdio_init();
/* Arrange for dtors to run at exit. */
if (unlikely(_fini!=NULL && atexit)) {
- atexit (&_fini);
+ atexit (&_fini);
}
+
/* Run all ctors now. */
if (unlikely(_init!=NULL))
- _init();
+ _init();
/*
* Note: It is possible that any initialization done above could
@@ -126,15 +92,14 @@ __uClibc_main(int argc, char **argv, char **envp)
* we call main.
*/
if (likely(__errno_location!=NULL))
- *(__errno_location()) = 0;
+ *(__errno_location()) = 0;
/* Set h_errno to 0 as well */
if (likely(__h_errno_location!=NULL))
- *(__h_errno_location()) = 0;
+ *(__h_errno_location()) = 0;
/*
* Finally, invoke application's main and then exit.
*/
exit(main(argc, argv, envp));
}
-