mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
3300816c38
2000-04-27 Ulrich Drepper <drepper@redhat.com> * elf/soinit.c (__libc_global_ctors): Call __pthread_initialize_minimal if this function is available. * sysdeps/i386/i486/atomicity.h (exchange_and_add): Use uint32_t for all values. <haible@clisp.cons.org>.
86 lines
2.3 KiB
C
86 lines
2.3 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. */
|
|
|
|
static void (*const __CTOR_LIST__[1]) (void)
|
|
__attribute__ ((section (".ctors")))
|
|
= { (void (*) (void)) -1 };
|
|
static void (*const __DTOR_LIST__[1]) (void)
|
|
__attribute__ ((section (".dtors")))
|
|
= { (void (*) (void)) -1 };
|
|
|
|
static inline void
|
|
run_hooks (void (*const list[]) (void))
|
|
{
|
|
while (*++list)
|
|
(**list) ();
|
|
}
|
|
|
|
#ifdef HAVE_DWARF2_UNWIND_INFO
|
|
static char __EH_FRAME_BEGIN__[]
|
|
__attribute__ ((section (".eh_frame")))
|
|
= { };
|
|
# ifdef HAVE_DWARF2_UNWIND_INFO_STATIC
|
|
/* This must match what's in frame.h in gcc. How can one do that? */
|
|
struct object
|
|
{
|
|
void *pc_begin;
|
|
void *pc_end;
|
|
void *fde_begin;
|
|
void *fde_array;
|
|
__SIZE_TYPE__ count;
|
|
struct object *next;
|
|
};
|
|
extern void __register_frame_info (const void *, struct object *);
|
|
extern void __deregister_frame_info (const void *);
|
|
# else
|
|
extern void __register_frame (const void *);
|
|
extern void __deregister_frame (const void *);
|
|
# endif
|
|
#endif
|
|
|
|
/* We have to initialize the thread library at least if bit. */
|
|
extern void __pthread_initialize_minimal (void) __attribute__ ((weak));
|
|
|
|
/* This function will be called from _init in init-first.c. */
|
|
void
|
|
__libc_global_ctors (void)
|
|
{
|
|
/* Call constructor functions. */
|
|
run_hooks (__CTOR_LIST__);
|
|
#ifdef HAVE_DWARF2_UNWIND_INFO
|
|
# ifdef HAVE_DWARF2_UNWIND_INFO_STATIC
|
|
/* Initialize the thread library at least a bit since the libgcc functions
|
|
are using thread functions if these are available. */
|
|
if (__pthread_initialize_minimal)
|
|
__pthread_initialize_minimal ();
|
|
|
|
{
|
|
static struct object ob;
|
|
__register_frame_info (__EH_FRAME_BEGIN__, &ob);
|
|
}
|
|
# else
|
|
__register_frame (__EH_FRAME_BEGIN__);
|
|
# endif
|
|
#endif
|
|
}
|
|
|
|
|
|
/* This function becomes the DT_FINI termination function
|
|
for the C library. */
|
|
void _fini (void) __attribute__ ((section (".fini"))); /* Just for kicks. */
|
|
void
|
|
_fini (void)
|
|
{
|
|
/* Call destructor functions. */
|
|
run_hooks (__DTOR_LIST__);
|
|
#ifdef HAVE_DWARF2_UNWIND_INFO
|
|
# ifdef HAVE_DWARF2_UNWIND_INFO_STATIC
|
|
__deregister_frame_info (__EH_FRAME_BEGIN__);
|
|
# else
|
|
__deregister_frame (__EH_FRAME_BEGIN__);
|
|
# endif
|
|
#endif
|
|
}
|