/* Multiple versions of __memcpy_chk All versions must be listed in ifunc-impl-list.c. Copyright (C) 2010-2015 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 memcpy functions for static binaries. */ #if IS_IN (libc) # ifdef SHARED .text ENTRY(__memcpy_chk) .type __memcpy_chk, @gnu_indirect_function cmpl $0, KIND_OFFSET+__cpu_features(%rip) jne 1f call __init_cpu_features 1: leaq __memcpy_chk_sse2(%rip), %rax testl $bit_SSSE3, __cpu_features+CPUID_OFFSET+index_SSSE3(%rip) jz 2f leaq __memcpy_chk_ssse3(%rip), %rax testl $bit_Fast_Copy_Backward, __cpu_features+FEATURE_OFFSET+index_Fast_Copy_Backward(%rip) jz 2f leaq __memcpy_chk_ssse3_back(%rip), %rax testl $bit_AVX_Fast_Unaligned_Load, __cpu_features+FEATURE_OFFSET+index_AVX_Fast_Unaligned_Load(%rip) jz 2f leaq __memcpy_chk_avx_unaligned(%rip), %rax 2: ret END(__memcpy_chk) # else # include "../memcpy_chk.S" # endif #endif