glibc/elf/dl-init.c
Ulrich Drepper e6caf4e12e Update.
2002-03-01  Ulrich Drepper  <drepper@redhat.com>

	* elf/Makefile (dl-routines): Add dl-origin.
	(elide-routines.os): Add dl-origin.
	* elf/Versions [ld] (GLIBC_PRIVATE): Add _dl_get_origin.
	* elf/dl-debug.c (_dl_debug_initialize): Add missing INTUSE around
	_dl_debug_state.
	* include/libc-symbols.c: Define attribute_hidden depending on
	HAVE_VISIBILITY_ATTRIBUTE.  Add definition of INTVARDEF.

	* elf/dl-deps.c: Use INTUSE with __libc_enable_secure.
	* elf/dl-load.c: Likewise.
	* elf/rtld.c: Likewise.
	* include/unistd.h: Declare __libc_enable_secure_internal.
	* sysdeps/generic/dl-sysdep.c: Use INTVARDEF with __libc_enable_secure.
	Use INTUSE with __libc_enable_secure.
	* sysdeps/mach/hurd/dl-sysdep.c: Likewise.

	* elf/dl-deps.c: Use INTUSE with _dl_out_of_memory.
	* elf/dl-error.c: Likewise,
	* sysdeps/generic/ldsodefs.h: Declare _dl_out_of_memory_internal.

	* elf/dl-dst.h [_RTLD_GLOBAL]: Define _dl_get_origin to use INTUSE.
	* sysdeps/generic/dl-origin.c: Undefine _dl_get_origin macro before
	function definition.  Use INTDEF with _dl_get_origin.
	* sysdeps/unix/sysv/linux/dl-origin.c: Likewise.

	* elf/dl-init.c: Use INTUSE with _dl_starting_up.
	* elf/rtld.c: Likewise.  Use INTVARDEF for _dl_starting_up.

	* elf/dl-profile.c: Use INTDEF for _dl_mcount.
	* elf/dl-runtime.c: Use INTUSE with _dl_mcount.
	* sysdeps/generic/ldsodefs.h: Declare _dl_mcount_internal.

	* elf/dl-conflict.c: Use rtld_progrname instead of _dl_argv[0].
	* elf/dl-deps.c: Likewise.
	* elf/dl-error.c: Likewise.
	* elf/dl-fini.c: Likewise.
	* elf/dl-init.c: Likewise.
	* elf/dl-load.c: Likewise.
	* elf/dl-lookup.c: Likewise.
	* elf/dl-reloc.c: Likewise.
	* elf/dl-version.c: Likewise.
	* elf/do-lookup.h: Likewise.
	* sysdeps/arm/dl-machine.h: Likewise.
	* sysdeps/cris/dl-machine.h: Likewise.
	* sysdeps/hppa/dl-machine.h: Likewise.
	* sysdeps/i386/dl-machine.h: Likewise.
	* sysdeps/m68k/dl-machine.h: Likewise.
	* sysdeps/powerpc/dl-machine.h: Likewise.
	* sysdeps/s390/s390-32/dl-machine.h: Likewise.
	* sysdeps/s390/s390-64/dl-machine.h: Likewise.
	* sysdeps/sh/dl-machine.h: Likewise.
	* sysdeps/sparc/sparc-32/dl-machine.h: Likewise.
	* sysdeps/sparc/sparc-64/dl-machine.h: Likewise.
	* sysdeps/x86_64/dl-machine.h: Likewise.
	* elf/rtld.c: Use INTDEF for _dl_argv.  Use rtld_progrname instead of
	_dl_argv[0].  Use INTUSE with _dl_argv.
	* sysdeps/generic/dl-sysdep.c: Use INTUSE with _dl_argv.
	* sysdeps/generic/ldsodefs.h: Define rtld_progname macro.
2002-03-01 09:44:29 +00:00

149 lines
4.8 KiB
C

/* Return the next shared object initializer function not yet run.
Copyright (C) 1995, 1996, 1998-2001, 2002 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
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stddef.h>
#include <ldsodefs.h>
/* Type of the initializer. */
typedef void (*init_t) (int, char **, char **);
/* Flag, nonzero during startup phase. */
extern int _dl_starting_up;
extern int _dl_starting_up_internal attribute_hidden;
static void
call_init (struct link_map *l, int argc, char **argv, char **env)
{
if (l->l_init_called)
/* This object is all done. */
return;
/* Avoid handling this constructor again in case we have a circular
dependency. */
l->l_init_called = 1;
/* Check for object which constructors we do not run here. */
if (__builtin_expect (l->l_name[0], 'a') == '\0'
&& l->l_type == lt_executable)
return;
/* Are there any constructors? */
if (l->l_info[DT_INIT] == NULL
&& __builtin_expect (l->l_info[DT_INIT_ARRAY] == NULL, 1))
return;
/* Print a debug message if wanted. */
if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_IMPCALLS, 0))
INTUSE(_dl_debug_printf) ("\ncalling init: %s\n\n",
l->l_name[0] ? l->l_name : rtld_progname);
/* Now run the local constructors. There are two forms of them:
- the one named by DT_INIT
- the others in the DT_INIT_ARRAY.
*/
if (l->l_info[DT_INIT] != NULL)
{
init_t init = (init_t) DL_DT_INIT_ADDRESS
(l, l->l_addr + l->l_info[DT_INIT]->d_un.d_ptr);
/* Call the function. */
init (argc, argv, env);
}
/* Next see whether there is an array with initialization functions. */
if (l->l_info[DT_INIT_ARRAY] != NULL)
{
unsigned int j;
unsigned int jm;
ElfW(Addr) *addrs;
jm = l->l_info[DT_INIT_ARRAYSZ]->d_un.d_val / sizeof (ElfW(Addr));
addrs = (ElfW(Addr) *) (l->l_info[DT_INIT_ARRAY]->d_un.d_ptr
+ l->l_addr);
for (j = 0; j < jm; ++j)
((init_t) addrs[j]) (argc, argv, env);
}
}
void
internal_function
_dl_init (struct link_map *main_map, int argc, char **argv, char **env)
{
ElfW(Dyn) *preinit_array = main_map->l_info[DT_PREINIT_ARRAY];
struct r_debug *r;
unsigned int i;
if (__builtin_expect (GL(dl_initfirst) != NULL, 0))
{
call_init (GL(dl_initfirst), argc, argv, env);
GL(dl_initfirst) = NULL;
}
/* Don't do anything if there is no preinit array. */
if (__builtin_expect (preinit_array != NULL, 0)
&& (i = preinit_array->d_un.d_val / sizeof (ElfW(Addr))) > 0)
{
ElfW(Addr) *addrs;
unsigned int cnt;
if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_IMPCALLS, 0))
INTUSE(_dl_debug_printf) ("\ncalling preinit: %s\n\n",
main_map->l_name[0]
? main_map->l_name : rtld_progname);
addrs = (ElfW(Addr) *) (main_map->l_info[DT_PREINIT_ARRAY]->d_un.d_ptr
+ main_map->l_addr);
for (cnt = 0; cnt < i; ++cnt)
((init_t) addrs[cnt]) (argc, argv, env);
}
/* Notify the debugger we have added some objects. We need to call
_dl_debug_initialize in a static program in case dynamic linking has
not been used before. */
r = _dl_debug_initialize (0);
r->r_state = RT_ADD;
INTUSE(_dl_debug_state) ();
/* Stupid users forced the ELF specification to be changed. It now
says that the dynamic loader is responsible for determining the
order in which the constructors have to run. The constructors
for all dependencies of an object must run before the constructor
for the object itself. Circular dependencies are left unspecified.
This is highly questionable since it puts the burden on the dynamic
loader which has to find the dependencies at runtime instead of
letting the user do it right. Stupidity rules! */
i = main_map->l_searchlist.r_nlist;
while (i-- > 0)
call_init (main_map->l_initfini[i], argc, argv, env);
/* Notify the debugger all new objects are now ready to go. */
r->r_state = RT_CONSISTENT;
INTUSE(_dl_debug_state) ();
/* Finished starting up. */
INTUSE(_dl_starting_up) = 0;
}
INTDEF (_dl_init)