2014-06-19 13:00:56 -07:00
|
|
|
/* Multiple versions of memset_chk
|
|
|
|
|
All versions must be listed in ifunc-impl-list.c.
|
2017-01-01 00:14:16 +00:00
|
|
|
Copyright (C) 2014-2017 Free Software Foundation, Inc.
|
2014-06-19 13:00:56 -07:00
|
|
|
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. */
|
2014-11-24 15:03:45 +05:30
|
|
|
#if IS_IN (libc)
|
2015-10-28 13:29:03 +00:00
|
|
|
# ifdef SHARED
|
2014-06-19 13:00:56 -07:00
|
|
|
ENTRY(__memset_chk)
|
|
|
|
|
.type __memset_chk, @gnu_indirect_function
|
2015-08-13 03:38:47 -07:00
|
|
|
LOAD_RTLD_GLOBAL_RO_RDX
|
2016-06-08 13:55:45 -07:00
|
|
|
lea __memset_chk_sse2_unaligned_erms(%rip), %RAX_LP
|
|
|
|
|
HAS_CPU_FEATURE (ERMS)
|
|
|
|
|
jnz 1f
|
|
|
|
|
lea __memset_chk_sse2_unaligned(%rip), %RAX_LP
|
|
|
|
|
1:
|
2015-08-13 03:38:47 -07:00
|
|
|
HAS_ARCH_FEATURE (AVX2_Usable)
|
2014-06-19 13:00:56 -07:00
|
|
|
jz 2f
|
2016-06-08 13:55:45 -07:00
|
|
|
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):
|
2017-04-18 14:01:45 -07:00
|
|
|
HAS_ARCH_FEATURE (Prefer_No_AVX512)
|
|
|
|
|
jnz 2f
|
2015-12-19 02:47:28 +03:00
|
|
|
HAS_ARCH_FEATURE (AVX512F_Usable)
|
|
|
|
|
jz 2f
|
2016-06-08 13:55:45 -07:00
|
|
|
lea __memset_chk_avx512_no_vzeroupper(%rip), %RAX_LP
|
2015-12-19 02:47:28 +03:00
|
|
|
HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER)
|
2016-06-08 13:55:45 -07:00
|
|
|
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
|
2014-06-19 13:00:56 -07:00
|
|
|
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
|
