1 /* Multiple versions of bzero
2 Copyright (C) 2010 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
20 #include <init-arch.h>
24 .type __bzero, @gnu_indirect_function
25 cmpl $0, __cpu_features+KIND_OFFSET(%rip)
27 call __init_cpu_features
28 1: leaq __bzero_x86_64(%rip), %rax
29 testl $bit_Prefer_SSE_for_memop, __cpu_features+FEATURE_OFFSET+index_Prefer_SSE_for_memop(%rip)
31 leaq __bzero_sse2(%rip), %rax
35 .type __bzero_sse2, @function
39 mov %rsi,%rdx /* Adjust parameter. */
40 xorl %esi,%esi /* Fill with 0s. */
43 .size __bzero_sse2, .-__bzero_sse2
45 .type __bzero_x86_64, @function
49 mov %rsi,%rdx /* Adjust parameter. */
50 xorl %esi,%esi /* Fill with 0s. */
53 .size __bzero_x86_64, .-__bzero_x86_64
55 weak_alias (__bzero, bzero)