| /* Multiple versions of bzero |
| Copyright (C) 2010 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <sysdep.h> |
| #include <init-arch.h> |
| |
| .text |
| ENTRY(__bzero) |
| .type __bzero, @gnu_indirect_function |
| cmpl $0, __cpu_features+KIND_OFFSET(%rip) |
| jne 1f |
| call __init_cpu_features |
| 1: leaq __bzero_x86_64(%rip), %rax |
| testl $bit_Prefer_SSE_for_memop, __cpu_features+FEATURE_OFFSET+index_Prefer_SSE_for_memop(%rip) |
| jz 2f |
| leaq __bzero_sse2(%rip), %rax |
| 2: ret |
| END(__bzero) |
| |
| .type __bzero_sse2, @function |
| __bzero_sse2: |
| cfi_startproc |
| CALL_MCOUNT |
| mov %rsi,%rdx /* Adjust parameter. */ |
| xorl %esi,%esi /* Fill with 0s. */ |
| jmp __memset_sse2 |
| cfi_endproc |
| .size __bzero_sse2, .-__bzero_sse2 |
| |
| .type __bzero_x86_64, @function |
| __bzero_x86_64: |
| cfi_startproc |
| CALL_MCOUNT |
| mov %rsi,%rdx /* Adjust parameter. */ |
| xorl %esi,%esi /* Fill with 0s. */ |
| jmp __memset_x86_64 |
| cfi_endproc |
| .size __bzero_x86_64, .-__bzero_x86_64 |
| |
| weak_alias (__bzero, bzero) |
