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/* Multiple versions of strcat
Copyright (C) 2009, 2011 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>
#ifndef USE_AS_STRNCAT
# ifndef STRCAT
# define STRCAT strcat
# endif
#endif
#ifdef USE_AS_STRNCAT
# define STRCAT_SSSE3 __strncat_ssse3
# define STRCAT_SSE2 __strncat_sse2
# define STRCAT_SSE2_UNALIGNED __strncat_sse2_unaligned
# define __GI_STRCAT __GI_strncat
# define __GI___STRCAT __GI___strncat
#else
# define STRCAT_SSSE3 __strcat_ssse3
# define STRCAT_SSE2 __strcat_sse2
# define STRCAT_SSE2_UNALIGNED __strcat_sse2_unaligned
# define __GI_STRCAT __GI_strcat
# define __GI___STRCAT __GI___strcat
#endif
/* Define multiple versions only for the definition in libc. */
#ifndef NOT_IN_libc
.text
ENTRY(STRCAT)
.type STRCAT, @gnu_indirect_function
cmpl $0, __cpu_features+KIND_OFFSET(%rip)
jne 1f
call __init_cpu_features
1: leaq STRCAT_SSE2_UNALIGNED(%rip), %rax
testl $bit_Fast_Unaligned_Load, __cpu_features+FEATURE_OFFSET+index_Fast_Unaligned_Load(%rip)
jnz 2f
leaq STRCAT_SSE2(%rip), %rax
testl $bit_SSSE3, __cpu_features+CPUID_OFFSET+index_SSSE3(%rip)
jz 2f
leaq STRCAT_SSSE3(%rip), %rax
2: ret
END(STRCAT)
# undef ENTRY
# define ENTRY(name) \
.type STRCAT_SSE2, @function; \
.align 16; \
STRCAT_SSE2: cfi_startproc; \
CALL_MCOUNT
# undef END
# define END(name) \
cfi_endproc; .size STRCAT_SSE2, .-STRCAT_SSE2
# undef libc_hidden_builtin_def
/* It doesn't make sense to send libc-internal strcat 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_STRCAT; __GI_STRCAT = STRCAT_SSE2
# undef libc_hidden_def
# define libc_hidden_def(name) \
.globl __GI___STRCAT; __GI___STRCAT = STRCAT_SSE2
#endif
#ifndef USE_AS_STRNCAT
# include "../strcat.S"
#endif
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