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/* Multiple versions of strcspn
Copyright (C) 2009 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <config.h>
#ifdef HAVE_SSE4_SUPPORT
#include <sysdep.h>
#include <ifunc-defines.h>
#ifdef USE_AS_STRPBRK
#define STRCSPN_SSE42 __strpbrk_sse42
#define STRCSPN_SSE2 __strpbrk_sse2
#define __GI_STRCSPN __GI_strpbrk
#else
#ifndef STRCSPN
#define STRCSPN strcspn
#define STRCSPN_SSE42 __strcspn_sse42
#define STRCSPN_SSE2 __strcspn_sse2
#define __GI_STRCSPN __GI_strcspn
#endif
#endif
/* Define multiple versions only for the definition in libc. Don't
define multiple versions for strpbrk in static library since we
need strpbrk before the initialization happened. */
#if (defined SHARED || !defined USE_AS_STRPBRK) && !defined NOT_IN_libc
.text
ENTRY(STRCSPN)
.type STRCSPN, @gnu_indirect_function
cmpl $0, __cpu_features+KIND_OFFSET(%rip)
jne 1f
call __init_cpu_features
1: leaq STRCSPN_SSE2(%rip), %rax
testl $(1<<20), __cpu_features+CPUID_OFFSET+COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET(%rip)
jz 2f
leaq STRCSPN_SSE42(%rip), %rax
2: ret
END(STRCSPN)
# undef ENTRY
# define ENTRY(name) \
.type STRCSPN_SSE2, @function; \
.globl STRCSPN_SSE2; \
.align 16; \
STRCSPN_SSE2: cfi_startproc; \
CALL_MCOUNT
# undef END
# define END(name) \
cfi_endproc; .size STRCSPN_SSE2, .-STRCSPN_SSE2
# undef libc_hidden_builtin_def
/* It doesn't make sense to send libc-internal strcspn calls through a PLT.
The speedup we get from using SSE4.2 instruction is likely eaten away
by the indirect call in the PLT. */
# define libc_hidden_builtin_def(name) \
.globl __GI_STRCSPN; __GI_STRCSPN = STRCSPN_SSE2
#endif
#endif /* HAVE_SSE4_SUPPORT */
#ifdef USE_AS_STRPBRK
#include "../strpbrk.S"
#else
#include "../strcspn.S"
#endif
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