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be13f7bf | 1 | /* Multiple versions of wmemcmp |
ac49ecaf | 2 | All versions must be listed in ifunc-impl-list.c. |
b168057a | 3 | Copyright (C) 2011-2015 Free Software Foundation, Inc. |
be13f7bf LD |
4 | Contributed by Intel Corporation. |
5 | This file is part of the GNU C Library. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
18 | License along with the GNU C Library; if not, see |
19 | <http://www.gnu.org/licenses/>. */ | |
be13f7bf LD |
20 | |
21 | #include <sysdep.h> | |
22 | #include <init-arch.h> | |
23 | ||
24 | /* Define multiple versions only for the definition in libc. */ | |
4f41c682 | 25 | #if IS_IN (libc) |
be13f7bf LD |
26 | .text |
27 | ENTRY(wmemcmp) | |
28 | .type wmemcmp, @gnu_indirect_function | |
29 | cmpl $0, KIND_OFFSET+__cpu_features(%rip) | |
30 | jne 1f | |
31 | call __init_cpu_features | |
32 | ||
33 | 1: testl $bit_SSSE3, __cpu_features+CPUID_OFFSET+index_SSSE3(%rip) | |
34 | jnz 2f | |
35 | leaq __wmemcmp_sse2(%rip), %rax | |
36 | ret | |
37 | ||
38 | 2: testl $bit_SSE4_1, __cpu_features+CPUID_OFFSET+index_SSE4_1(%rip) | |
39 | jz 3f | |
40 | leaq __wmemcmp_sse4_1(%rip), %rax | |
41 | ret | |
42 | ||
43 | 3: leaq __wmemcmp_ssse3(%rip), %rax | |
44 | ret | |
45 | ||
46 | END(wmemcmp) | |
47 | #endif |