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glibc/elf/soinit.c
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/* Initializer module for building the ELF shared C library. This file and | |
sofini.c do the work normally done by crtbeginS.o and crtendS.o, to wrap | |
the `.ctors' and `.dtors' sections so the lists are terminated, and | |
calling those lists of functions. */ | |
#ifndef NO_CTORS_DTORS_SECTIONS | |
# include <libc-internal.h> | |
# include <stdlib.h> | |
static void (*const __CTOR_LIST__[1]) (void) | |
__attribute__ ((used, section (".ctors"))) | |
= { (void (*) (void)) -1 }; | |
static void (*const __DTOR_LIST__[1]) (void) | |
__attribute__ ((used, section (".dtors"))) | |
= { (void (*) (void)) -1 }; | |
static inline void | |
run_hooks (void (*const list[]) (void)) | |
{ | |
while (*++list) | |
(**list) (); | |
} | |
/* This function will be called from _init in init-first.c. */ | |
void | |
__libc_global_ctors (void) | |
{ | |
/* Call constructor functions. */ | |
run_hooks (__CTOR_LIST__); | |
} | |
/* This function becomes the DT_FINI termination function | |
for the C library. */ | |
void | |
__libc_fini (void) | |
{ | |
/* Call destructor functions. */ | |
run_hooks (__DTOR_LIST__); | |
} | |
void (*_fini_ptr) (void) __attribute__ ((section (".fini_array"))) | |
= &__libc_fini; | |
#endif |