diff options
Diffstat (limited to 'REORG.TODO/sysdeps/x86_64/multiarch/memset_chk.S')
| -rw-r--r-- | REORG.TODO/sysdeps/x86_64/multiarch/memset_chk.S | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/x86_64/multiarch/memset_chk.S b/REORG.TODO/sysdeps/x86_64/multiarch/memset_chk.S new file mode 100644 index 0000000000..7e08311cdf --- /dev/null +++ b/REORG.TODO/sysdeps/x86_64/multiarch/memset_chk.S @@ -0,0 +1,61 @@ +/* Multiple versions of memset_chk + All versions must be listed in ifunc-impl-list.c. + Copyright (C) 2014-2017 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, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <init-arch.h> + +/* Define multiple versions only for the definition in lib. */ +#if IS_IN (libc) +# ifdef SHARED +ENTRY(__memset_chk) + .type __memset_chk, @gnu_indirect_function + LOAD_RTLD_GLOBAL_RO_RDX + lea __memset_chk_sse2_unaligned_erms(%rip), %RAX_LP + HAS_CPU_FEATURE (ERMS) + jnz 1f + lea __memset_chk_sse2_unaligned(%rip), %RAX_LP +1: + HAS_ARCH_FEATURE (AVX2_Usable) + jz 2f + lea __memset_chk_avx2_unaligned_erms(%rip), %RAX_LP + HAS_CPU_FEATURE (ERMS) + jnz L(AVX512F) + lea __memset_chk_avx2_unaligned(%rip), %RAX_LP +L(AVX512F): + HAS_ARCH_FEATURE (Prefer_No_AVX512) + jnz 2f + HAS_ARCH_FEATURE (AVX512F_Usable) + jz 2f + lea __memset_chk_avx512_no_vzeroupper(%rip), %RAX_LP + HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER) + jnz 2f + lea __memset_chk_avx512_unaligned_erms(%rip), %RAX_LP + HAS_CPU_FEATURE (ERMS) + jnz 2f + lea __memset_chk_avx512_unaligned(%rip), %RAX_LP +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 |