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crc: use k-mask to load final bytes of data

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Change-Id: Ibd8d2144bc6942e11911e25a6365c1cb108af477
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
This commit is contained in:
Pablo de Lara 2023-03-30 10:36:55 +01:00
parent 9f2b68f057
commit 22d33cf795
1 changed files with 36 additions and 82 deletions
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118
crc/crc64_iso_norm_by16_10.asm
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@ -61,32 +61,25 @@ section .text
%xdefine arg3 rdx
%endif
%ifidn __OUTPUT_FORMAT__, win64
%define XMM_SAVE 16*2
%define VARIABLE_OFFSET 16*12+8
%else
%define VARIABLE_OFFSET 16*2+8
%endif
align 16
mk_global FUNCTION_NAME, function
FUNCTION_NAME:
endbranch
not arg1
sub rsp, VARIABLE_OFFSET
%ifidn __OUTPUT_FORMAT__, win64
sub rsp, 16*10 + 8
; push the xmm registers into the stack to maintain
vmovdqa [rsp + XMM_SAVE + 16*0], xmm6
vmovdqa [rsp + XMM_SAVE + 16*1], xmm7
vmovdqa [rsp + XMM_SAVE + 16*2], xmm8
vmovdqa [rsp + XMM_SAVE + 16*3], xmm9
vmovdqa [rsp + XMM_SAVE + 16*4], xmm10
vmovdqa [rsp + XMM_SAVE + 16*5], xmm11
vmovdqa [rsp + XMM_SAVE + 16*6], xmm12
vmovdqa [rsp + XMM_SAVE + 16*7], xmm13
vmovdqa [rsp + XMM_SAVE + 16*8], xmm14
vmovdqa [rsp + XMM_SAVE + 16*9], xmm15
vmovdqa [rsp + 16*0], xmm6
vmovdqa [rsp + 16*1], xmm7
vmovdqa [rsp + 16*2], xmm8
vmovdqa [rsp + 16*3], xmm9
vmovdqa [rsp + 16*4], xmm10
vmovdqa [rsp + 16*5], xmm11
vmovdqa [rsp + 16*6], xmm12
vmovdqa [rsp + 16*7], xmm13
vmovdqa [rsp + 16*8], xmm14
vmovdqa [rsp + 16*9], xmm15
%endif
vbroadcasti32x4 zmm18, [SHUF_MASK]
cmp arg3, 256
@ -296,18 +289,19 @@ _cleanup:
%ifidn __OUTPUT_FORMAT__, win64
vmovdqa xmm6, [rsp + XMM_SAVE + 16*0]
vmovdqa xmm7, [rsp + XMM_SAVE + 16*1]
vmovdqa xmm8, [rsp + XMM_SAVE + 16*2]
vmovdqa xmm9, [rsp + XMM_SAVE + 16*3]
vmovdqa xmm10, [rsp + XMM_SAVE + 16*4]
vmovdqa xmm11, [rsp + XMM_SAVE + 16*5]
vmovdqa xmm12, [rsp + XMM_SAVE + 16*6]
vmovdqa xmm13, [rsp + XMM_SAVE + 16*7]
vmovdqa xmm14, [rsp + XMM_SAVE + 16*8]
vmovdqa xmm15, [rsp + XMM_SAVE + 16*9]
vmovdqa xmm6, [rsp + 16*0]
vmovdqa xmm7, [rsp + 16*1]
vmovdqa xmm8, [rsp + 16*2]
vmovdqa xmm9, [rsp + 16*3]
vmovdqa xmm10, [rsp + 16*4]
vmovdqa xmm11, [rsp + 16*5]
vmovdqa xmm12, [rsp + 16*6]
vmovdqa xmm13, [rsp + 16*7]
vmovdqa xmm14, [rsp + 16*8]
vmovdqa xmm15, [rsp + 16*9]
add rsp, 16*10 + 8
%endif
add rsp, VARIABLE_OFFSET
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@ -364,62 +358,16 @@ _less_than_32:
align 16
_less_than_16_left:
; use stack space to load data less than 16 bytes, zero-out the 16B in memory first.
vpxor xmm1, xmm1
mov r11, rsp
vmovdqa [r11], xmm1
; backup the counter value
mov r9, arg3
cmp arg3, 8
jl _less_than_8_left
; load 8 Bytes
mov rax, [arg2]
mov [r11], rax
add r11, 8
sub arg3, 8
add arg2, 8
_less_than_8_left:
cmp arg3, 4
jl _less_than_4_left
; load 4 Bytes
mov eax, [arg2]
mov [r11], eax
add r11, 4
sub arg3, 4
add arg2, 4
_less_than_4_left:
cmp arg3, 2
jl _less_than_2_left
; load 2 Bytes
mov ax, [arg2]
mov [r11], ax
add r11, 2
sub arg3, 2
add arg2, 2
_less_than_2_left:
cmp arg3, 1
jl _zero_left
; load 1 Byte
mov al, [arg2]
mov [r11], al
_zero_left:
vmovdqa xmm7, [rsp]
lea rax, [rel byte_len_to_mask_table]
kmovw k1, [rax + arg3*2]
vmovdqu8 xmm7{k1}{z}, [arg2]
vpshufb xmm7, xmm18
vpxor xmm7, xmm0 ; xor the initial crc value
lea rax, [pshufb_shf_table + 16]
sub rax, r9
sub rax, arg3
cmp r9, 8
cmp arg3, 8
jl _end_1to7
_end_8to15:
@ -482,7 +430,6 @@ INCLUDE_CONSTS
%endif
mask1: dq 0x8080808080808080, 0x8080808080808080
mask2: dq 0xFFFFFFFFFFFFFFFF, 0x00000000FFFFFFFF
mask3: dq 0x0000000000000000, 0xFFFFFFFFFFFFFFFF
SHUF_MASK: dq 0x08090A0B0C0D0E0F, 0x0001020304050607
@ -510,6 +457,13 @@ dq 0x0706050403020100, 0x0f0e0d0c0b0a0908
dq 0x8080808080808080, 0x0f0e0d0c0b0a0908
dq 0x8080808080808080, 0x8080808080808080
align 16
byte_len_to_mask_table:
dw 0x0000, 0x0001, 0x0003, 0x0007,
dw 0x000f, 0x001f, 0x003f, 0x007f,
dw 0x00ff, 0x01ff, 0x03ff, 0x07ff,
dw 0x0fff, 0x1fff, 0x3fff, 0x7fff,
%else ; Assembler doesn't understand these opcodes. Add empty symbol for windows.
%ifidn __OUTPUT_FORMAT__, win64