1 /* Multiple versions of memmove
2 All versions must be listed in ifunc-impl-list.c.
3 Copyright (C) 2010-2015 Free Software Foundation, Inc.
4 Contributed by Intel Corporation.
5 This file is part of the GNU C Library.
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, see
19 <http://www.gnu.org/licenses/>. */
22 #include <init-arch.h>
24 /* Define multiple versions only for the definition in lib. */
29 .type memmove, @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 __memmove_ia32@GOTOFF(%ebx), %eax
38 testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx)
40 leal __memmove_sse2_unaligned@GOTOFF(%ebx), %eax
41 testl $bit_Fast_Unaligned_Load, FEATURE_OFFSET+index_Fast_Unaligned_Load+__cpu_features@GOTOFF(%ebx)
43 testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features@GOTOFF(%ebx)
45 leal __memmove_ssse3@GOTOFF(%ebx), %eax
46 testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features@GOTOFF(%ebx)
48 leal __memmove_ssse3_rep@GOTOFF(%ebx), %eax
50 cfi_adjust_cfa_offset (-4)
56 # define ENTRY(name) \
57 .type __memmove_ia32, @function; \
59 .globl __memmove_ia32; \
60 .hidden __memmove_ia32; \
61 __memmove_ia32: cfi_startproc; \
66 .type memmove, @gnu_indirect_function
67 cmpl $0, KIND_OFFSET+__cpu_features
69 call __init_cpu_features
70 1: leal __memmove_ia32, %eax
71 testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features
73 leal __memmove_sse2_unaligned, %eax
74 testl $bit_Fast_Unaligned_Load, FEATURE_OFFSET+index_Fast_Unaligned_Load+__cpu_features
76 testl $bit_SSSE3, CPUID_OFFSET+index_SSSE3+__cpu_features
78 leal __memmove_ssse3, %eax
79 testl $bit_Fast_Rep_String, FEATURE_OFFSET+index_Fast_Rep_String+__cpu_features
81 leal __memmove_ssse3_rep, %eax
86 # define ENTRY(name) \
87 .type __memmove_ia32, @function; \
88 .globl __memmove_ia32; \
90 __memmove_ia32: cfi_startproc; \
96 cfi_endproc; .size __memmove_ia32, .-__memmove_ia32
99 # define ENTRY_CHK(name) \
100 .type __memmove_chk_ia32, @function; \
101 .globl __memmove_chk_ia32; \
103 __memmove_chk_ia32: cfi_startproc; \
106 # define END_CHK(name) \
107 cfi_endproc; .size __memmove_chk_ia32, .-__memmove_chk_ia32
110 # undef libc_hidden_builtin_def
111 /* IFUNC doesn't work with the hidden functions in shared library since
112 they will be called without setting up EBX needed for PLT which is
114 # define libc_hidden_builtin_def(name) \
115 .globl __GI_memmove; __GI_memmove = __memmove_ia32
119 #include "../memmove.S"