/* 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 #include .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)