diff options
Diffstat (limited to 'sysdeps/x86_64/multiarch/strcat-evex.S')
| -rw-r--r-- | sysdeps/x86_64/multiarch/strcat-evex.S | 291 |
1 files changed, 6 insertions, 285 deletions
diff --git a/sysdeps/x86_64/multiarch/strcat-evex.S b/sysdeps/x86_64/multiarch/strcat-evex.S index 0e2df947e9..b4207b7889 100644 --- a/sysdeps/x86_64/multiarch/strcat-evex.S +++ b/sysdeps/x86_64/multiarch/strcat-evex.S @@ -1,286 +1,7 @@ -/* strcat with 256-bit EVEX instructions. - Copyright (C) 2021-2022 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/>. */ - -#include <isa-level.h> - -#if ISA_SHOULD_BUILD (4) - - -# include <sysdep.h> - -# ifndef STRCAT -# define STRCAT __strcat_evex -# endif - -# define VMOVU vmovdqu64 -# define VMOVA vmovdqa64 - -/* zero register */ -# define XMMZERO xmm16 -# define YMMZERO ymm16 -# define YMM0 ymm17 -# define YMM1 ymm18 - -# define USE_AS_STRCAT - -/* Number of bytes in a vector register */ -# define VEC_SIZE 32 - - .section .text.evex,"ax",@progbits -ENTRY (STRCAT) - mov %rdi, %r9 -# ifdef USE_AS_STRNCAT - mov %rdx, %r8 -# endif - - xor %eax, %eax - mov %edi, %ecx - and $((VEC_SIZE * 4) - 1), %ecx - vpxorq %XMMZERO, %XMMZERO, %XMMZERO - cmp $(VEC_SIZE * 3), %ecx - ja L(fourth_vector_boundary) - vpcmpb $0, (%rdi), %YMMZERO, %k0 - kmovd %k0, %edx - test %edx, %edx - jnz L(exit_null_on_first_vector) - mov %rdi, %rax - and $-VEC_SIZE, %rax - jmp L(align_vec_size_start) -L(fourth_vector_boundary): - mov %rdi, %rax - and $-VEC_SIZE, %rax - vpcmpb $0, (%rax), %YMMZERO, %k0 - mov $-1, %r10d - sub %rax, %rcx - shl %cl, %r10d - kmovd %k0, %edx - and %r10d, %edx - jnz L(exit) - -L(align_vec_size_start): - vpcmpb $0, VEC_SIZE(%rax), %YMMZERO, %k0 - kmovd %k0, %edx - test %edx, %edx - jnz L(exit_null_on_second_vector) - - vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1 - kmovd %k1, %edx - test %edx, %edx - jnz L(exit_null_on_third_vector) - - vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2 - kmovd %k2, %edx - test %edx, %edx - jnz L(exit_null_on_fourth_vector) - - vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3 - kmovd %k3, %edx - test %edx, %edx - jnz L(exit_null_on_fifth_vector) - - vpcmpb $0, (VEC_SIZE * 5)(%rax), %YMMZERO, %k4 - add $(VEC_SIZE * 4), %rax - kmovd %k4, %edx - test %edx, %edx - jnz L(exit_null_on_second_vector) - - vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1 - kmovd %k1, %edx - test %edx, %edx - jnz L(exit_null_on_third_vector) - - vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2 - kmovd %k2, %edx - test %edx, %edx - jnz L(exit_null_on_fourth_vector) - - vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3 - kmovd %k3, %edx - test %edx, %edx - jnz L(exit_null_on_fifth_vector) - - vpcmpb $0, (VEC_SIZE * 5)(%rax), %YMMZERO, %k4 - kmovd %k4, %edx - add $(VEC_SIZE * 4), %rax - test %edx, %edx - jnz L(exit_null_on_second_vector) - - vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1 - kmovd %k1, %edx - test %edx, %edx - jnz L(exit_null_on_third_vector) - - vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2 - kmovd %k2, %edx - test %edx, %edx - jnz L(exit_null_on_fourth_vector) - - vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3 - kmovd %k3, %edx - test %edx, %edx - jnz L(exit_null_on_fifth_vector) - - vpcmpb $0, (VEC_SIZE * 5)(%rax), %YMMZERO, %k4 - add $(VEC_SIZE * 4), %rax - kmovd %k4, %edx - test %edx, %edx - jnz L(exit_null_on_second_vector) - - vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1 - kmovd %k1, %edx - test %edx, %edx - jnz L(exit_null_on_third_vector) - - vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2 - kmovd %k2, %edx - test %edx, %edx - jnz L(exit_null_on_fourth_vector) - - vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3 - kmovd %k3, %edx - test %edx, %edx - jnz L(exit_null_on_fifth_vector) - - test $((VEC_SIZE * 4) - 1), %rax - jz L(align_four_vec_loop) - - vpcmpb $0, (VEC_SIZE * 5)(%rax), %YMMZERO, %k4 - add $(VEC_SIZE * 5), %rax - kmovd %k4, %edx - test %edx, %edx - jnz L(exit) - - test $((VEC_SIZE * 4) - 1), %rax - jz L(align_four_vec_loop) - - vpcmpb $0, VEC_SIZE(%rax), %YMMZERO, %k0 - add $VEC_SIZE, %rax - kmovd %k0, %edx - test %edx, %edx - jnz L(exit) - - test $((VEC_SIZE * 4) - 1), %rax - jz L(align_four_vec_loop) - - vpcmpb $0, VEC_SIZE(%rax), %YMMZERO, %k0 - add $VEC_SIZE, %rax - kmovd %k0, %edx - test %edx, %edx - jnz L(exit) - - test $((VEC_SIZE * 4) - 1), %rax - jz L(align_four_vec_loop) - - vpcmpb $0, VEC_SIZE(%rax), %YMMZERO, %k1 - add $VEC_SIZE, %rax - kmovd %k1, %edx - test %edx, %edx - jnz L(exit) - - add $VEC_SIZE, %rax - - .p2align 4 -L(align_four_vec_loop): - VMOVA (%rax), %YMM0 - VMOVA (VEC_SIZE * 2)(%rax), %YMM1 - vpminub VEC_SIZE(%rax), %YMM0, %YMM0 - vpminub (VEC_SIZE * 3)(%rax), %YMM1, %YMM1 - vpminub %YMM0, %YMM1, %YMM0 - /* If K0 != 0, there is a null byte. */ - vpcmpb $0, %YMM0, %YMMZERO, %k0 - add $(VEC_SIZE * 4), %rax - ktestd %k0, %k0 - jz L(align_four_vec_loop) - - vpcmpb $0, -(VEC_SIZE * 4)(%rax), %YMMZERO, %k0 - sub $(VEC_SIZE * 5), %rax - kmovd %k0, %edx - test %edx, %edx - jnz L(exit_null_on_second_vector) - - vpcmpb $0, (VEC_SIZE * 2)(%rax), %YMMZERO, %k1 - kmovd %k1, %edx - test %edx, %edx - jnz L(exit_null_on_third_vector) - - vpcmpb $0, (VEC_SIZE * 3)(%rax), %YMMZERO, %k2 - kmovd %k2, %edx - test %edx, %edx - jnz L(exit_null_on_fourth_vector) - - vpcmpb $0, (VEC_SIZE * 4)(%rax), %YMMZERO, %k3 - kmovd %k3, %edx - sub %rdi, %rax - bsf %rdx, %rdx - add %rdx, %rax - add $(VEC_SIZE * 4), %rax - jmp L(StartStrcpyPart) - - .p2align 4 -L(exit): - sub %rdi, %rax -L(exit_null_on_first_vector): - bsf %rdx, %rdx - add %rdx, %rax - jmp L(StartStrcpyPart) - - .p2align 4 -L(exit_null_on_second_vector): - sub %rdi, %rax - bsf %rdx, %rdx - add %rdx, %rax - add $VEC_SIZE, %rax - jmp L(StartStrcpyPart) - - .p2align 4 -L(exit_null_on_third_vector): - sub %rdi, %rax - bsf %rdx, %rdx - add %rdx, %rax - add $(VEC_SIZE * 2), %rax - jmp L(StartStrcpyPart) - - .p2align 4 -L(exit_null_on_fourth_vector): - sub %rdi, %rax - bsf %rdx, %rdx - add %rdx, %rax - add $(VEC_SIZE * 3), %rax - jmp L(StartStrcpyPart) - - .p2align 4 -L(exit_null_on_fifth_vector): - sub %rdi, %rax - bsf %rdx, %rdx - add %rdx, %rax - add $(VEC_SIZE * 4), %rax - - .p2align 4 -L(StartStrcpyPart): - lea (%r9, %rax), %rdi - mov %rsi, %rcx - mov %r9, %rax /* save result */ - -# ifdef USE_AS_STRNCAT - test %r8, %r8 - jz L(ExitZero) -# define USE_AS_STRNCPY -# endif - -# include "strcpy-evex.S" +#ifndef STRCAT +# define STRCAT __strcat_evex #endif + +#define USE_AS_STRCAT +#define STRCPY STRCAT +#include "strcpy-evex.S" |