diff options
Diffstat (limited to 'REORG.TODO/sysdeps/i386/i686/multiarch/strcmp.S')
| -rw-r--r-- | REORG.TODO/sysdeps/i386/i686/multiarch/strcmp.S | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/i686/multiarch/strcmp.S b/REORG.TODO/sysdeps/i386/i686/multiarch/strcmp.S new file mode 100644 index 0000000000..56de25a4b7 --- /dev/null +++ b/REORG.TODO/sysdeps/i386/i686/multiarch/strcmp.S @@ -0,0 +1,95 @@ +/* Multiple versions of strcmp + All versions must be listed in ifunc-impl-list.c. + Copyright (C) 2010-2017 Free Software Foundation, Inc. + Contributed by Intel Corporation. + 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/>. */ + +#include <sysdep.h> +#include <init-arch.h> + +#ifdef USE_AS_STRNCMP +# define STRCMP strncmp +# define __GI_STRCMP __GI_strncmp +# define __STRCMP_IA32 __strncmp_ia32 +# define __STRCMP_SSSE3 __strncmp_ssse3 +# define __STRCMP_SSE4_2 __strncmp_sse4_2 +#elif defined USE_AS_STRCASECMP_L +# define STRCMP __strcasecmp_l +# define __GI_STRCMP __GI_strcasecmp_l +# define __STRCMP_IA32 __strcasecmp_l_ia32 +# define __STRCMP_SSSE3 __strcasecmp_l_ssse3 +# define __STRCMP_SSE4_2 __strcasecmp_l_sse4_2 +#elif defined USE_AS_STRNCASECMP_L +# define STRCMP __strncasecmp_l +# define __GI_STRCMP __GI_strncasecmp_l +# define __STRCMP_IA32 __strncasecmp_l_ia32 +# define __STRCMP_SSSE3 __strncasecmp_l_ssse3 +# define __STRCMP_SSE4_2 __strncasecmp_l_sse4_2 +#else +# define STRCMP strcmp +# define __GI_STRCMP __GI_strcmp +# define __STRCMP_IA32 __strcmp_ia32 +# define __STRCMP_SSSE3 __strcmp_ssse3 +# define __STRCMP_SSE4_2 __strcmp_sse4_2 +#endif + +/* Define multiple versions only for the definition in libc. Don't + define multiple versions for strncmp in static library since we + need strncmp before the initialization happened. */ +#if (defined SHARED || !defined USE_AS_STRNCMP) && IS_IN (libc) + .text +ENTRY(STRCMP) + .type STRCMP, @gnu_indirect_function + LOAD_GOT_AND_RTLD_GLOBAL_RO + LOAD_FUNC_GOT_EAX (__STRCMP_IA32) + HAS_CPU_FEATURE (SSSE3) + jz 2f + LOAD_FUNC_GOT_EAX (__STRCMP_SSSE3) + HAS_CPU_FEATURE (SSE4_2) + jz 2f + HAS_ARCH_FEATURE (Slow_SSE4_2) + jnz 2f + LOAD_FUNC_GOT_EAX (__STRCMP_SSE4_2) +2: ret +END(STRCMP) + +# undef ENTRY +# define ENTRY(name) \ + .type __STRCMP_IA32, @function; \ + .p2align 4; \ + .globl __STRCMP_IA32; \ + .hidden __STRCMP_IA32; \ + __STRCMP_IA32: cfi_startproc; \ + CALL_MCOUNT +# undef END +# define END(name) \ + cfi_endproc; .size __STRCMP_IA32, .-__STRCMP_IA32 + +# ifdef SHARED +# undef libc_hidden_builtin_def +/* IFUNC doesn't work with the hidden functions in shared library since + they will be called without setting up EBX needed for PLT which is + used by IFUNC. */ +# define libc_hidden_builtin_def(name) \ + .globl __GI_STRCMP; __GI_STRCMP = __STRCMP_IA32 +# endif +#endif + +#if !defined USE_AS_STRNCMP && !defined USE_AS_STRCASECMP_L \ + && !defined USE_AS_STRNCASECMP_L +# include "../strcmp.S" +#endif |