Permalink
Cannot retrieve contributors at this time
Name already in use
A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
glibc/sysdeps/unix/sysv/linux/m68k/init-first.c
Go to fileThis commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
74 lines (60 sloc)
2.35 KB
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* Initialization code run first thing by the ELF startup code. Linux/m68k. | |
Copyright (C) 2010-2015 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010. | |
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, see | |
<http://www.gnu.org/licenses/>. */ | |
/* Note: linking in vDSO to a static binary requires changes to | |
the main GLIBC proper. Not yet implemented. */ | |
#ifdef SHARED | |
#include <dl-vdso.h> | |
#include <m68k-vdso.h> | |
static inline void | |
_libc_vdso_platform_setup (void) | |
{ | |
void *p; | |
PREPARE_VERSION (linux26, "LINUX_2.6", 61765110); | |
/* It may happen that rtld didn't initialize the vDSO, so fallback | |
to the syscall implementations if _dl_vdso_vsym returns NULL. | |
This may happen when a static executable dlopen's a dynamic library. | |
This really is nothing more than a workaround for rtld/csu | |
deficiency. Ideally, init code would setup the vDSO for static | |
binaries too. */ | |
p = _dl_vdso_vsym ("__kernel_read_tp", &linux26); | |
if (p != NULL) | |
{ | |
__vdso_read_tp = p; | |
__rtld___vdso_read_tp = p; | |
} | |
else | |
assert (__vdso_read_tp == (void *) __vdso_read_tp_stub); | |
p = _dl_vdso_vsym ("__kernel_atomic_cmpxchg_32", &linux26); | |
if (p != NULL) | |
{ | |
__vdso_atomic_cmpxchg_32 = p; | |
__rtld___vdso_atomic_cmpxchg_32 = p; | |
} | |
else | |
assert (__vdso_atomic_cmpxchg_32 | |
== (void *) __vdso_atomic_cmpxchg_32_stub); | |
p = _dl_vdso_vsym ("__kernel_atomic_barrier", &linux26); | |
if (p != NULL) | |
{ | |
__vdso_atomic_barrier = p; | |
__rtld___vdso_atomic_barrier = p; | |
} | |
else | |
assert (__vdso_atomic_barrier == (void *) __vdso_atomic_barrier_stub); | |
} | |
#define VDSO_SETUP _libc_vdso_platform_setup | |
#endif /* SHARED */ | |
#include <csu/init-first.c> |