diff options
Diffstat (limited to 'csu/elf-init.c')
| -rw-r--r-- | csu/elf-init.c | 59 |
1 files changed, 38 insertions, 21 deletions
diff --git a/csu/elf-init.c b/csu/elf-init.c index d4e0b3f..d0a518f 100644 --- a/csu/elf-init.c +++ b/csu/elf-init.c @@ -1,5 +1,5 @@ /* Startup support for ELF initializers/finalizers in the main executable. - Copyright (C) 2002, 2003 Free Software Foundation, Inc. + Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -36,16 +36,37 @@ #include <stddef.h> -#ifdef HAVE_INITFINI_ARRAY + /* These magic symbols are provided by the linker. */ -extern void (*__preinit_array_start []) (void) attribute_hidden; -extern void (*__preinit_array_end []) (void) attribute_hidden; -extern void (*__init_array_start []) (void) attribute_hidden; -extern void (*__init_array_end []) (void) attribute_hidden; +extern void (*__preinit_array_start []) (int, char **, char **) + attribute_hidden; +extern void (*__preinit_array_end []) (int, char **, char **) + attribute_hidden; +extern void (*__init_array_start []) (int, char **, char **) + attribute_hidden; +extern void (*__init_array_end []) (int, char **, char **) + attribute_hidden; extern void (*__fini_array_start []) (void) attribute_hidden; extern void (*__fini_array_end []) (void) attribute_hidden; + +#if defined HAVE_VISIBILITY_ATTRIBUTE \ + && (defined SHARED || defined LIBC_NONSHARED) +# define hidden_undef_2(x) #x +# define hidden_undef_1(x) hidden_undef_2 (x) +# define hidden_undef(x) \ + __asm (hidden_undef_1 (ASM_GLOBAL_DIRECTIVE) " " #x); \ + __asm (".hidden " #x); +#else +# define hidden_undef(x) #endif +hidden_undef (__preinit_array_start) +hidden_undef (__preinit_array_end) +hidden_undef (__init_array_start) +hidden_undef (__init_array_end) +hidden_undef (__fini_array_start) +hidden_undef (__fini_array_end) + /* These function symbols are provided for the .init/.fini section entry points automagically by the linker. */ extern void _init (void); @@ -57,43 +78,39 @@ extern void _fini (void); the libc.a module in that it doesn't call the preinit array. */ void -__libc_csu_init (void) +__libc_csu_init (int argc, char **argv, char **envp) { -#ifdef HAVE_INITFINI_ARRAY /* For dynamically linked executables the preinit array is executed by the dynamic linker (before initializing any shared object. */ -# ifndef LIBC_NONSHARED +#ifndef LIBC_NONSHARED /* For static executables, preinit happens rights before init. */ { const size_t size = __preinit_array_end - __preinit_array_start; size_t i; for (i = 0; i < size; i++) - (*__preinit_array_start [i]) (); + (*__preinit_array_start [i]) (argc, argv, envp); } -# endif #endif _init (); -#ifdef HAVE_INITFINI_ARRAY - { - const size_t size = __init_array_end - __init_array_start; - size_t i; - for (i = 0; i < size; i++) - (*__init_array_start [i]) (); - } -#endif + const size_t size = __init_array_end - __init_array_start; + for (size_t i = 0; i < size; i++) + (*__init_array_start [i]) (argc, argv, envp); } +/* This function should not be used anymore. We run the executable's + destructor now just like any other. We cannot remove the function, + though. */ void __libc_csu_fini (void) { -#ifdef HAVE_INITFINI_ARRAY +#ifndef LIBC_NONSHARED size_t i = __fini_array_end - __fini_array_start; while (i-- > 0) (*__fini_array_start [i]) (); -#endif _fini (); +#endif } |