/* Multiple versions of __mempcpy_chk All versions must be listed in ifunc-impl-list.c. Copyright (C) 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 . */ /* 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 # include extern void * __mempcpy_chk (void *, const void *, size_t, size_t); extern __typeof (__mempcpy_chk) __mempcpy_chk_i386 attribute_hidden; extern __typeof (__mempcpy_chk) __mempcpy_chk_i586 attribute_hidden; extern __typeof (__mempcpy_chk) __mempcpy_chk_i686 attribute_hidden; extern __typeof (__mempcpy_chk) __mempcpy_chk_sse2_unaligned attribute_hidden; extern __typeof (__mempcpy_chk) __mempcpy_chk_ssse3 attribute_hidden; extern __typeof (__mempcpy_chk) __mempcpy_chk_ssse3_rep attribute_hidden; # include /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle ifunc symbol properly. */ extern void *mempcpy_chk_ifunc (void) __asm__ ("__mempcpy_chk"); void * mempcpy_chk_ifunc (void) { if (HAS_CPU_FEATURE (SSE2)) { if (HAS_ARCH_FEATURE (Fast_Unaligned_Load)) return __mempcpy_chk_sse2_unaligned; else if (HAS_CPU_FEATURE (SSSE3)) { if (HAS_ARCH_FEATURE (Fast_Rep_String)) return __mempcpy_chk_ssse3_rep; else return __mempcpy_chk_ssse3; } } if (USE_I686) return __mempcpy_chk_i686; else if (USE_I586) return __mempcpy_chk_i586; else return __mempcpy_chk_i386; } __asm__ (".type __mempcpy_chk, %gnu_indirect_function"); # else # include # endif #endif