mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 00:31:08 +00:00
88 lines
2.8 KiB
ArmAsm
88 lines
2.8 KiB
ArmAsm
/* Multiple versions of strcat
|
|
All versions must be listed in ifunc-impl-list.c.
|
|
Copyright (C) 2009-2015 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. */
|
|
#if IS_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; \
|
|
.globl STRCAT_SSE2; \
|
|
.hidden STRCAT_SSE2; \
|
|
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
|