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glibc/sysdeps/x86_64/multiarch/strstr.c
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/* Multiple versions of strstr. | |
All versions must be listed in ifunc-impl-list.c. | |
Copyright (C) 2012-2016 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, see | |
<http://www.gnu.org/licenses/>. */ | |
/* Redefine strstr so that the compiler won't complain about the type | |
mismatch with the IFUNC selector in strong_alias, below. */ | |
#undef strstr | |
#define strstr __redirect_strstr | |
#include <string.h> | |
#undef strstr | |
#define STRSTR __strstr_sse2 | |
#ifdef SHARED | |
# undef libc_hidden_builtin_def | |
# define libc_hidden_builtin_def(name) \ | |
__hidden_ver1 (__strstr_sse2, __GI_strstr, __strstr_sse2); | |
#endif | |
#include "string/strstr.c" | |
extern __typeof (__redirect_strstr) __strstr_sse2_unaligned attribute_hidden; | |
extern __typeof (__redirect_strstr) __strstr_sse2 attribute_hidden; | |
#include "init-arch.h" | |
/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle | |
ifunc symbol properly. */ | |
extern __typeof (__redirect_strstr) __libc_strstr; | |
libc_ifunc (__libc_strstr, | |
HAS_ARCH_FEATURE (Fast_Unaligned_Load) | |
? __strstr_sse2_unaligned | |
: __strstr_sse2) | |
#undef strstr | |
strong_alias (__libc_strstr, strstr) |