mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-26 20:51:11 +00:00
783e641fba
On !ELF_INITFINI architectures, _init is no longer called by the dynamic linker. We can use an ELF constructor instead because the constructor order does not matter. (The other constructors are used to set up libio vtable bypasses and do not depend on this initialization routine.)
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/* 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 <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_first 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
|