mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-27 03:41:23 +08:00
99 lines
3.0 KiB
ArmAsm
99 lines
3.0 KiB
ArmAsm
/* Multiple versions of strcpy
|
|
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>
|
|
|
|
#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; \
|
|
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
|