glibc/elf/soinit.c
Andreas Jaeger f14273c5a2 2000-05-13 Jakub Jelinek <jakub@redhat.com>
* elf/soinit.c (__libc_global_ctors): Move
	__pthread_initialize_minimal call out of HAVE_DWARF2_* defines.
	* resolv/resolv.h (__res_state): Added __attribute__((const)).
	(_res): If __RES_PTHREAD_INTERNAL is defined, declare it as
	variable, don't define it to __res_state call.

2000-05-13  Jakub Jelinek  <jakub@redhat.com>

	* internals.h (__RES_PTHREAD_INTERNAL): Define.
2000-05-13  Jakub Jelinek  <jakub@redhat.com>

	* internals.h (__RES_PTHREAD_INTERNAL): Define.
2000-05-15 07:15:04 +00:00

87 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__);
/* 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 ();
#ifdef HAVE_DWARF2_UNWIND_INFO
# ifdef HAVE_DWARF2_UNWIND_INFO_STATIC
{
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
}