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/* Multiple versions of strcpy
Copyright (C) 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#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_IA32 __stpncpy_ia32
# define __GI_STRCPY __GI_stpncpy
# define __GI___STRCPY __GI___stpncpy
# else
# define STRCPY_SSSE3 __stpcpy_ssse3
# define STRCPY_SSE2 __stpcpy_sse2
# define STRCPY_IA32 __stpcpy_ia32
# 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_IA32 __strncpy_ia32
# define __GI_STRCPY __GI_strncpy
# else
# define STRCPY_SSSE3 __strcpy_ssse3
# define STRCPY_SSE2 __strcpy_sse2
# define STRCPY_IA32 __strcpy_ia32
# define __GI_STRCPY __GI_strcpy
# endif
#endif
/* Define multiple versions only for the definition in libc. Don't
define multiple versions for strncpy in static library since we
need strncpy before the initialization happened. */
#ifndef NOT_IN_libc
# ifdef SHARED
.section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits
.globl __i686.get_pc_thunk.bx
.hidden __i686.get_pc_thunk.bx
.p2align 4
.type __i686.get_pc_thunk.bx,@function
__i686.get_pc_thunk.bx:
movl (%esp), %ebx
ret
.text
ENTRY(STRCPY)
.type STRCPY, @gnu_indirect_function
pushl %ebx
cfi_adjust_cfa_offset (4)
cfi_rel_offset (ebx, 0)
call __i686.get_pc_thunk.bx
addl $_GLOBAL_OFFSET_TABLE_, %ebx
cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx)
jne 1f
call __init_cpu_features
1: leal STRCPY_IA32@GOTOFF(%ebx), %eax
testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx)
jz 2f
leal STRCPY_SSE2@GOTOFF(%ebx), %eax
testl $bit_Fast_Unaligned_Load, FEATURE_OFFSET+index_Fast_Unaligned_Load+__cpu_features@GOTOFF(%ebx)
jnz 2f
testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features@GOTOFF(%ebx)
jz 2f
leal STRCPY_SSSE3@GOTOFF(%ebx), %eax
2: popl %ebx
cfi_adjust_cfa_offset (-4)
cfi_restore (ebx)
ret
END(STRCPY)
# else
ENTRY(STRCPY)
.type STRCPY, @gnu_indirect_function
cmpl $0, KIND_OFFSET+__cpu_features
jne 1f
call __init_cpu_features
1: leal STRCPY_IA32, %eax
testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features
jz 2f
leal STRCPY_SSE2, %eax
testl $bit_Fast_Unaligned_Load, FEATURE_OFFSET+index_Fast_Unaligned_Load+__cpu_features
jnz 2f
testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features
jz 2f
leal STRCPY_SSSE3, %eax
2: ret
END(STRCPY)
# endif
# undef ENTRY
# define ENTRY(name) \
.type STRCPY_IA32, @function; \
.align 16; \
STRCPY_IA32: cfi_startproc; \
CALL_MCOUNT
# undef END
# define END(name) \
cfi_endproc; .size STRCPY_IA32, .-STRCPY_IA32
# ifdef SHARED
# 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_IA32
# undef libc_hidden_def
# define libc_hidden_def(name) \
.globl __GI___STRCPY; __GI___STRCPY = STRCPY_IA32
# endif
#endif
#ifdef USE_AS_STPCPY
# ifdef USE_AS_STRNCPY
# include "../../stpncpy.S"
# else
# include "../../i586/stpcpy.S"
# endif
#else
# ifndef USE_AS_STRNCPY
# include "../../i586/strcpy.S"
# endif
#endif
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