mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-29 16:21:07 +00:00
83 lines
2.5 KiB
ArmAsm
83 lines
2.5 KiB
ArmAsm
|
/* 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
|