/* Multiple versions of __mempcpy_chk All versions must be listed in ifunc-impl-list.c. Copyright (C) 2010-2016 Free Software Foundation, Inc. Contributed by Intel Corporation. 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 . */ #include #include /* Define multiple versions only for the definition in lib and for DSO. There are no multiarch mempcpy functions for static binaries. */ #if IS_IN (libc) # ifdef SHARED .text ENTRY(__mempcpy_chk) .type __mempcpy_chk, @gnu_indirect_function LOAD_RTLD_GLOBAL_RO_RDX #ifdef HAVE_AVX512_ASM_SUPPORT HAS_ARCH_FEATURE (AVX512F_Usable) jz 1f HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER) jz 1f leaq __mempcpy_chk_avx512_no_vzeroupper(%rip), %rax ret #endif 1: leaq __mempcpy_chk_sse2(%rip), %rax HAS_CPU_FEATURE (SSSE3) jz 2f leaq __mempcpy_chk_ssse3(%rip), %rax HAS_ARCH_FEATURE (Fast_Copy_Backward) jz 2f leaq __mempcpy_chk_ssse3_back(%rip), %rax HAS_ARCH_FEATURE (AVX_Fast_Unaligned_Load) jz 2f leaq __mempcpy_chk_avx_unaligned(%rip), %rax 2: ret END(__mempcpy_chk) # else # include "../mempcpy_chk.S" # endif #endif