diff options
Diffstat (limited to 'sysdeps/x86_64')
| -rw-r--r-- | sysdeps/x86_64/multiarch/memmove-ssse3.S | 60 |
1 files changed, 44 insertions, 16 deletions
diff --git a/sysdeps/x86_64/multiarch/memmove-ssse3.S b/sysdeps/x86_64/multiarch/memmove-ssse3.S index 310ff62b86..a88fde4a8f 100644 --- a/sysdeps/x86_64/multiarch/memmove-ssse3.S +++ b/sysdeps/x86_64/multiarch/memmove-ssse3.S @@ -1,19 +1,42 @@ -#include <sysdep.h> - -#ifndef MEMMOVE -# define MEMMOVE __memmove_ssse3 -# define MEMMOVE_CHK __memmove_chk_ssse3 -# define MEMCPY __memcpy_ssse3 -# define MEMCPY_CHK __memcpy_chk_ssse3 -# define MEMPCPY __mempcpy_ssse3 -# define MEMPCPY_CHK __mempcpy_chk_ssse3 -#endif +/* memmove/memcpy/mempcpy optimized for aligned access with SSSE3. + All versions must be listed in ifunc-impl-list.c. + Copyright (C) 2022 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 + <https://www.gnu.org/licenses/>. */ + + +#if IS_IN (libc) + +# include <sysdep.h> +# ifndef MEMMOVE +# define MEMMOVE __memmove_ssse3 +# define MEMMOVE_CHK __memmove_chk_ssse3 +# define MEMCPY __memcpy_ssse3 +# define MEMCPY_CHK __memcpy_chk_ssse3 +# define MEMPCPY __mempcpy_ssse3 +# define MEMPCPY_CHK __mempcpy_chk_ssse3 +# endif .section .text.ssse3, "ax", @progbits +# if defined SHARED ENTRY(MEMPCPY_CHK) cmp %RDX_LP, %RCX_LP jb HIDDEN_JUMPTARGET(__chk_fail) END(MEMPCPY_CHK) +# endif ENTRY(MEMPCPY) mov %RDI_LP, %RAX_LP @@ -21,10 +44,12 @@ ENTRY(MEMPCPY) jmp L(start) END(MEMPCPY) +# if defined SHARED ENTRY(MEMMOVE_CHK) cmp %RDX_LP, %RCX_LP jb HIDDEN_JUMPTARGET(__chk_fail) END(MEMMOVE_CHK) +# endif ENTRY_P2ALIGN(MEMMOVE, 6) # ifdef __ILP32__ @@ -124,11 +149,11 @@ L(more_2x_vec): loop. */ movups %xmm0, (%rdi) -#ifdef SHARED_CACHE_SIZE_HALF +# ifdef SHARED_CACHE_SIZE_HALF cmp $SHARED_CACHE_SIZE_HALF, %RDX_LP -#else +# else cmp __x86_shared_cache_size_half(%rip), %rdx -#endif +# endif ja L(large_memcpy) leaq -64(%rdi, %rdx), %r8 @@ -206,7 +231,7 @@ L(end_loop_fwd): /* Extactly 64 bytes if `jmp L(end_loop_fwd)` is long encoding. 60 bytes otherwise. */ -#define ALIGNED_LOOP_FWD(align_by); \ +# define ALIGNED_LOOP_FWD(align_by); \ .p2align 6; \ L(loop_fwd_ ## align_by): \ movaps 16(%rsi), %xmm0; \ @@ -275,7 +300,7 @@ L(end_large_loop_fwd): /* Size > 64 bytes and <= 96 bytes. 32-byte align between ensure 96-byte spacing between each. */ -#define ALIGNED_LARGE_LOOP_FWD(align_by); \ +# define ALIGNED_LARGE_LOOP_FWD(align_by); \ .p2align 5; \ L(large_loop_fwd_ ## align_by): \ movaps 16(%rsi), %xmm0; \ @@ -343,7 +368,7 @@ L(end_loop_bkwd): /* Extactly 64 bytes if `jmp L(end_loop_bkwd)` is long encoding. 60 bytes otherwise. */ -#define ALIGNED_LOOP_BKWD(align_by); \ +# define ALIGNED_LOOP_BKWD(align_by); \ .p2align 6; \ L(loop_bkwd_ ## align_by): \ movaps 32(%rsi), %xmm1; \ @@ -381,4 +406,7 @@ L(loop_bkwd_ ## align_by): \ END(MEMMOVE) strong_alias (MEMMOVE, MEMCPY) +# if defined SHARED strong_alias (MEMMOVE_CHK, MEMCPY_CHK) +# endif +#endif |