1 /* Multiple versions of strcpy
2 Copyright (C) 2011-2012 Free Software Foundation, Inc.
3 Contributed by Intel Corporation.
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
21 #include <init-arch.h>
23 #if !defined (USE_AS_STPCPY) && !defined (USE_AS_STRNCPY)
25 # define STRCPY strcpy
30 # ifdef USE_AS_STRNCPY
31 # define STRCPY_SSSE3 __stpncpy_ssse3
32 # define STRCPY_SSE2 __stpncpy_sse2
33 # define STRCPY_IA32 __stpncpy_ia32
34 # define __GI_STRCPY __GI_stpncpy
35 # define __GI___STRCPY __GI___stpncpy
37 # define STRCPY_SSSE3 __stpcpy_ssse3
38 # define STRCPY_SSE2 __stpcpy_sse2
39 # define STRCPY_IA32 __stpcpy_ia32
40 # define __GI_STRCPY __GI_stpcpy
41 # define __GI___STRCPY __GI___stpcpy
44 # ifdef USE_AS_STRNCPY
45 # define STRCPY_SSSE3 __strncpy_ssse3
46 # define STRCPY_SSE2 __strncpy_sse2
47 # define STRCPY_IA32 __strncpy_ia32
48 # define __GI_STRCPY __GI_strncpy
50 # define STRCPY_SSSE3 __strcpy_ssse3
51 # define STRCPY_SSE2 __strcpy_sse2
52 # define STRCPY_IA32 __strcpy_ia32
53 # define __GI_STRCPY __GI_strcpy
58 /* Define multiple versions only for the definition in libc. Don't
59 define multiple versions for strncpy in static library since we
60 need strncpy before the initialization happened. */
66 .type STRCPY, @gnu_indirect_function
68 cfi_adjust_cfa_offset (4)
69 cfi_rel_offset (ebx, 0)
71 cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx)
73 call __init_cpu_features
74 1: leal STRCPY_IA32@GOTOFF(%ebx), %eax
75 testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx)
77 leal STRCPY_SSE2@GOTOFF(%ebx), %eax
78 testl $bit_Fast_Unaligned_Load, FEATURE_OFFSET+index_Fast_Unaligned_Load+__cpu_features@GOTOFF(%ebx)
80 testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features@GOTOFF(%ebx)
82 leal STRCPY_SSSE3@GOTOFF(%ebx), %eax
84 cfi_adjust_cfa_offset (-4)
91 .type STRCPY, @gnu_indirect_function
92 cmpl $0, KIND_OFFSET+__cpu_features
94 call __init_cpu_features
95 1: leal STRCPY_IA32, %eax
96 testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features
98 leal STRCPY_SSE2, %eax
99 testl $bit_Fast_Unaligned_Load, FEATURE_OFFSET+index_Fast_Unaligned_Load+__cpu_features
101 testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features
103 leal STRCPY_SSSE3, %eax
110 # define ENTRY(name) \
111 .type STRCPY_IA32, @function; \
113 STRCPY_IA32: cfi_startproc; \
117 cfi_endproc; .size STRCPY_IA32, .-STRCPY_IA32
120 # undef libc_hidden_builtin_def
121 /* It doesn't make sense to send libc-internal strcpy calls through a PLT.
122 The speedup we get from using SSSE3 instruction is likely eaten away
123 by the indirect call in the PLT. */
124 # define libc_hidden_builtin_def(name) \
125 .globl __GI_STRCPY; __GI_STRCPY = STRCPY_IA32
126 # undef libc_hidden_def
127 # define libc_hidden_def(name) \
128 .globl __GI___STRCPY; __GI___STRCPY = STRCPY_IA32
134 # ifdef USE_AS_STRNCPY
135 # include "../../stpncpy.S"
137 # include "../../i586/stpcpy.S"
140 # ifndef USE_AS_STRNCPY
141 # include "../../i586/strcpy.S"