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glibc/sysdeps/x86_64/multiarch/strstr.c
Go to file| /* 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) |