diff options
Diffstat (limited to 'REORG.TODO/sysdeps/i386/i686/multiarch/memcpy_chk.S')
| -rw-r--r-- | REORG.TODO/sysdeps/i386/i686/multiarch/memcpy_chk.S | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/i686/multiarch/memcpy_chk.S b/REORG.TODO/sysdeps/i386/i686/multiarch/memcpy_chk.S new file mode 100644 index 0000000000..1b4fbe2e6f --- /dev/null +++ b/REORG.TODO/sysdeps/i386/i686/multiarch/memcpy_chk.S @@ -0,0 +1,50 @@ +/* Multiple versions of __memcpy_chk + All versions must be listed in ifunc-impl-list.c. + Copyright (C) 2010-2017 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 + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <init-arch.h> + +/* 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 + LOAD_GOT_AND_RTLD_GLOBAL_RO + LOAD_FUNC_GOT_EAX (__memcpy_chk_ia32) + HAS_CPU_FEATURE (SSE2) + jz 2f + LOAD_FUNC_GOT_EAX (__memcpy_chk_sse2_unaligned) + HAS_ARCH_FEATURE (Fast_Unaligned_Load) + jnz 2f + HAS_CPU_FEATURE (SSSE3) + jz 2f + LOAD_FUNC_GOT_EAX (__memcpy_chk_ssse3) + HAS_ARCH_FEATURE (Fast_Rep_String) + jz 2f + LOAD_FUNC_GOT_EAX (__memcpy_chk_ssse3_rep) +2: ret +END(__memcpy_chk) +# else +# include "../memcpy_chk.S" +# endif +#endif |