1 /* Multiple versions of mempcpy
2 Copyright (C) 2010, 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 /* Define multiple versions only for the definition in lib and for
24 DSO. In static binaries we need mempcpy before the initialization
26 #if defined SHARED && !defined NOT_IN_libc
29 .type __mempcpy, @gnu_indirect_function
31 cfi_adjust_cfa_offset (4)
32 cfi_rel_offset (ebx, 0)
34 cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx)
36 call __init_cpu_features
37 1: leal __mempcpy_ia32@GOTOFF(%ebx), %eax
38 testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features@GOTOFF(%ebx)
40 leal __mempcpy_ssse3@GOTOFF(%ebx), %eax
41 testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features@GOTOFF(%ebx)
43 leal __mempcpy_ssse3_rep@GOTOFF(%ebx), %eax
45 cfi_adjust_cfa_offset (-4)
51 # define ENTRY(name) \
52 .type __mempcpy_ia32, @function; \
54 __mempcpy_ia32: cfi_startproc; \
58 cfi_endproc; .size __mempcpy_ia32, .-__mempcpy_ia32
61 # define ENTRY_CHK(name) \
62 .type __mempcpy_chk_ia32, @function; \
63 .globl __mempcpy_chk_ia32; \
65 __mempcpy_chk_ia32: cfi_startproc; \
68 # define END_CHK(name) \
69 cfi_endproc; .size __mempcpy_chk_ia32, .-__mempcpy_chk_ia32
71 # undef libc_hidden_def
72 # undef libc_hidden_builtin_def
73 /* IFUNC doesn't work with the hidden functions in shared library since
74 they will be called without setting up EBX needed for PLT which is
76 # define libc_hidden_def(name) \
77 .globl __GI_mempcpy; __GI_mempcpy = __mempcpy_ia32
78 # define libc_hidden_builtin_def(name) \
79 .globl __GI___mempcpy; __GI___mempcpy = __mempcpy_ia32
82 #include "../mempcpy.S"