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/* Multiple versions of strcpy
All versions must be listed in ifunc-impl-list.c.
Copyright (C) 2009-2012 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>
#if !defined (USE_AS_STPCPY) && !defined (USE_AS_STRNCPY)
# ifndef STRCPY
# define STRCPY strcpy
# endif
#endif
#ifdef USE_AS_STPCPY
# ifdef USE_AS_STRNCPY
# define STRCPY_SSSE3 __stpncpy_ssse3
# define STRCPY_SSE2 __stpncpy_sse2
# define STRCPY_SSE2_UNALIGNED __stpncpy_sse2_unaligned
# define __GI_STRCPY __GI_stpncpy
# define __GI___STRCPY __GI___stpncpy
# else
# define STRCPY_SSSE3 __stpcpy_ssse3
# define STRCPY_SSE2 __stpcpy_sse2
# define STRCPY_SSE2_UNALIGNED __stpcpy_sse2_unaligned
# define __GI_STRCPY __GI_stpcpy
# define __GI___STRCPY __GI___stpcpy
# endif
#else
# ifdef USE_AS_STRNCPY
# define STRCPY_SSSE3 __strncpy_ssse3
# define STRCPY_SSE2 __strncpy_sse2
# define STRCPY_SSE2_UNALIGNED __strncpy_sse2_unaligned
# define __GI_STRCPY __GI_strncpy
# else
# define STRCPY_SSSE3 __strcpy_ssse3
# define STRCPY_SSE2 __strcpy_sse2
# define STRCPY_SSE2_UNALIGNED __strcpy_sse2_unaligned
# define __GI_STRCPY __GI_strcpy
# endif
#endif
/* Define multiple versions only for the definition in libc. */
#ifndef NOT_IN_libc
.text
ENTRY(STRCPY)
.type STRCPY, @gnu_indirect_function
cmpl $0, __cpu_features+KIND_OFFSET(%rip)
jne 1f
call __init_cpu_features
1: leaq STRCPY_SSE2_UNALIGNED(%rip), %rax
testl $bit_Fast_Unaligned_Load, __cpu_features+FEATURE_OFFSET+index_Fast_Unaligned_Load(%rip)
jnz 2f
leaq STRCPY_SSE2(%rip), %rax
testl $bit_SSSE3, __cpu_features+CPUID_OFFSET+index_SSSE3(%rip)
jz 2f
leaq STRCPY_SSSE3(%rip), %rax
2: ret
END(STRCPY)
# undef ENTRY
# define ENTRY(name) \
.type STRCPY_SSE2, @function; \
.align 16; \
.globl STRCPY_SSE2; \
.hidden STRCPY_SSE2; \
STRCPY_SSE2: cfi_startproc; \
CALL_MCOUNT
# undef END
# define END(name) \
cfi_endproc; .size STRCPY_SSE2, .-STRCPY_SSE2
# undef libc_hidden_builtin_def
/* It doesn't make sense to send libc-internal strcpy calls through a PLT.
The speedup we get from using SSSE3 instruction is likely eaten away
by the indirect call in the PLT. */
# define libc_hidden_builtin_def(name) \
.globl __GI_STRCPY; __GI_STRCPY = STRCPY_SSE2
# undef libc_hidden_def
# define libc_hidden_def(name) \
.globl __GI___STRCPY; __GI___STRCPY = STRCPY_SSE2
#endif
#ifndef USE_AS_STRNCPY
#include "../strcpy.S"
#endif
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