diff options
Diffstat (limited to 'sysdeps/x86_64/multiarch/memset_chk.S')
-rw-r--r-- | sysdeps/x86_64/multiarch/memset_chk.S | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/x86_64/multiarch/memset_chk.S b/sysdeps/x86_64/multiarch/memset_chk.S new file mode 100644 index 0000000000..16afe60c66 --- /dev/null +++ b/sysdeps/x86_64/multiarch/memset_chk.S @@ -0,0 +1,44 @@ +/* Multiple versions of __memset_chk + 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> + +/* Define multiple versions only for the definition in lib. */ +#ifndef NOT_IN_libc +# ifdef SHARED +ENTRY(__memset_chk) + .type __memset_chk, @gnu_indirect_function + cmpl $0, __cpu_features+KIND_OFFSET(%rip) + jne 1f + call __init_cpu_features +1: leaq __memset_chk_x86_64(%rip), %rax + testl $bit_Prefer_SSE_for_memop, __cpu_features+FEATURE_OFFSET+index_Prefer_SSE_for_memop(%rip) + jz 2f + leaq __memset_chk_sse2(%rip), %rax +2: ret +END(__memset_chk) + +strong_alias (__memset_chk, __memset_zero_constant_len_parameter) + .section .gnu.warning.__memset_zero_constant_len_parameter + .string "memset used with constant zero length parameter; this could be due to transposed parameters" +# else +# include "../memset_chk.S" +# endif +#endif |