diff options
Diffstat (limited to 'sysdeps/x86_64/multiarch/memmove.S')
| -rw-r--r-- | sysdeps/x86_64/multiarch/memmove.S | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/sysdeps/x86_64/multiarch/memmove.S b/sysdeps/x86_64/multiarch/memmove.S deleted file mode 100644 index 8c534e83e0..0000000000 --- a/sysdeps/x86_64/multiarch/memmove.S +++ /dev/null @@ -1,101 +0,0 @@ -/* Multiple versions of memmove - All versions must be listed in ifunc-impl-list.c. - Copyright (C) 2016-2017 Free Software Foundation, Inc. - 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. */ -#if IS_IN (libc) - .text -ENTRY(__libc_memmove) - .type __libc_memmove, @gnu_indirect_function - LOAD_RTLD_GLOBAL_RO_RDX - lea __memmove_erms(%rip), %RAX_LP - HAS_ARCH_FEATURE (Prefer_ERMS) - jnz 2f - HAS_ARCH_FEATURE (Prefer_No_AVX512) - jnz 1f - HAS_ARCH_FEATURE (AVX512F_Usable) - jz 1f - lea __memmove_avx512_no_vzeroupper(%rip), %RAX_LP - HAS_ARCH_FEATURE (Prefer_No_VZEROUPPER) - jnz 2f - lea __memmove_avx512_unaligned_erms(%rip), %RAX_LP - HAS_CPU_FEATURE (ERMS) - jnz 2f - lea __memmove_avx512_unaligned(%rip), %RAX_LP - ret -1: lea __memmove_avx_unaligned(%rip), %RAX_LP - HAS_ARCH_FEATURE (AVX_Fast_Unaligned_Load) - jz L(Fast_Unaligned_Load) - HAS_CPU_FEATURE (ERMS) - jz 2f - lea __memmove_avx_unaligned_erms(%rip), %RAX_LP - ret -L(Fast_Unaligned_Load): - lea __memmove_sse2_unaligned(%rip), %RAX_LP - HAS_ARCH_FEATURE (Fast_Unaligned_Copy) - jz L(SSSE3) - HAS_CPU_FEATURE (ERMS) - jz 2f - lea __memmove_sse2_unaligned_erms(%rip), %RAX_LP - ret -L(SSSE3): - HAS_CPU_FEATURE (SSSE3) - jz 2f - lea __memmove_ssse3_back(%rip), %RAX_LP - HAS_ARCH_FEATURE (Fast_Copy_Backward) - jnz 2f - lea __memmove_ssse3(%rip), %RAX_LP -2: ret -END(__libc_memmove) -#endif - -#if IS_IN (libc) -# define MEMMOVE_SYMBOL(p,s) p##_sse2_##s - -# ifdef SHARED -libc_hidden_ver (__memmove_sse2_unaligned, memmove) -libc_hidden_ver (__memcpy_sse2_unaligned, memcpy) -libc_hidden_ver (__mempcpy_sse2_unaligned, mempcpy) -libc_hidden_ver (__mempcpy_sse2_unaligned, __mempcpy) - -# undef libc_hidden_builtin_def -/* It doesn't make sense to send libc-internal memmove calls through a PLT. - The speedup we get from using SSE2 instructions is likely eaten away - by the indirect call in the PLT. */ -# define libc_hidden_builtin_def -# endif -strong_alias (__libc_memmove, memmove) -#endif - -#if !defined SHARED || !IS_IN (libc) -weak_alias (__mempcpy, mempcpy) -#endif - -#include "../memmove.S" - -#if defined SHARED && IS_IN (libc) -# include <shlib-compat.h> -# if SHLIB_COMPAT (libc, GLIBC_2_2_5, GLIBC_2_14) -/* Use __memmove_sse2_unaligned to support overlapping addresses. */ -compat_symbol (libc, __memmove_sse2_unaligned, memcpy, GLIBC_2_2_5); -# endif -#endif |