mirror of
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crc: remove Avoton optimized implementations
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
This commit is contained in:
Pablo de Lara
committed by
Marcel Cornu
Marcel Cornu
parent
e6db28bf03
commit
84cfe25fff
@@ -132,14 +132,12 @@ objs = \
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bin\pq_gen_avx512_gfni.obj \
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bin\pq_gen_avx512_gfni.obj \
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bin\raid_multibinary.obj \
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bin\raid_multibinary.obj \
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bin\crc16_t10dif_01.obj \
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bin\crc16_t10dif_01.obj \
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bin\crc16_t10dif_by4.obj \
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bin\crc16_t10dif_02.obj \
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bin\crc16_t10dif_02.obj \
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bin\crc16_t10dif_by16_10.obj \
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bin\crc16_t10dif_by16_10.obj \
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bin\crc16_t10dif_copy_by4.obj \
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bin\crc16_t10dif_copy_by4.obj \
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bin\crc16_t10dif_copy_by4_02.obj \
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bin\crc16_t10dif_copy_by4_02.obj \
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bin\crc32_ieee_01.obj \
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bin\crc32_ieee_01.obj \
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bin\crc32_ieee_02.obj \
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bin\crc32_ieee_02.obj \
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bin\crc32_ieee_by4.obj \
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bin\crc32_ieee_by16_10.obj \
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bin\crc32_ieee_by16_10.obj \
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bin\crc32_iscsi_01.obj \
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bin\crc32_iscsi_01.obj \
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bin\crc32_iscsi_by8_02.obj \
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bin\crc32_iscsi_by8_02.obj \
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@@ -37,14 +37,12 @@ set(CRC_BASE_ALIASES_SOURCES
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set(CRC_X86_64_SOURCES
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set(CRC_X86_64_SOURCES
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crc/crc16_t10dif_01.asm
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crc/crc16_t10dif_01.asm
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crc/crc16_t10dif_by4.asm
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crc/crc16_t10dif_02.asm
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crc/crc16_t10dif_02.asm
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crc/crc16_t10dif_by16_10.asm
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crc/crc16_t10dif_by16_10.asm
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crc/crc16_t10dif_copy_by4.asm
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crc/crc16_t10dif_copy_by4.asm
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crc/crc16_t10dif_copy_by4_02.asm
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crc/crc16_t10dif_copy_by4_02.asm
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crc/crc32_ieee_01.asm
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crc/crc32_ieee_01.asm
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crc/crc32_ieee_02.asm
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crc/crc32_ieee_02.asm
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crc/crc32_ieee_by4.asm
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crc/crc32_ieee_by16_10.asm
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crc/crc32_ieee_by16_10.asm
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crc/crc32_iscsi_01.asm
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crc/crc32_iscsi_01.asm
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crc/crc32_iscsi_by8_02.asm
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crc/crc32_iscsi_by8_02.asm
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@@ -39,14 +39,12 @@ lsrc_riscv64 += crc/crc_base_aliases.c
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lsrc_x86_64 += \
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lsrc_x86_64 += \
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crc/crc16_t10dif_01.asm \
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crc/crc16_t10dif_01.asm \
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crc/crc16_t10dif_by4.asm \
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crc/crc16_t10dif_02.asm \
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crc/crc16_t10dif_02.asm \
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crc/crc16_t10dif_by16_10.asm \
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crc/crc16_t10dif_by16_10.asm \
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crc/crc16_t10dif_copy_by4.asm \
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crc/crc16_t10dif_copy_by4.asm \
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crc/crc16_t10dif_copy_by4_02.asm \
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crc/crc16_t10dif_copy_by4_02.asm \
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crc/crc32_ieee_01.asm \
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crc/crc32_ieee_01.asm \
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crc/crc32_ieee_02.asm \
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crc/crc32_ieee_02.asm \
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crc/crc32_ieee_by4.asm \
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crc/crc32_ieee_by16_10.asm \
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crc/crc32_ieee_by16_10.asm \
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crc/crc32_iscsi_01.asm \
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crc/crc32_iscsi_01.asm \
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crc/crc32_iscsi_by8_02.asm \
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crc/crc32_iscsi_by8_02.asm \
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@@ -1,625 +0,0 @@
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; Copyright(c) 2011-2015 Intel Corporation All rights reserved.
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;
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; Redistribution and use in source and binary forms, with or without
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; modification, are permitted provided that the following conditions
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; are met:
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; * Redistributions of source code must retain the above copyright
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; notice, this list of conditions and the following disclaimer.
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; * Redistributions in binary form must reproduce the above copyright
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; notice, this list of conditions and the following disclaimer in
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; the documentation and/or other materials provided with the
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; distribution.
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; * Neither the name of Intel Corporation nor the names of its
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; contributors may be used to endorse or promote products derived
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; from this software without specific prior written permission.
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;
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; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;
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; Function API:
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; UINT16 crc16_t10dif_by4(
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; UINT16 init_crc, //initial CRC value, 16 bits
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; const unsigned char *buf, //buffer pointer to calculate CRC on
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; UINT64 len //buffer length in bytes (64-bit data)
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; );
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;
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; Authors:
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; Erdinc Ozturk
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; Vinodh Gopal
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; James Guilford
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;
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; Reference paper titled "Fast CRC Computation for Generic Polynomials Using PCLMULQDQ Instruction"
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; URL: http://download.intel.com/design/intarch/papers/323102.pdf
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;
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%include "reg_sizes.asm"
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%ifndef fetch_dist
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%define fetch_dist 4096
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%endif
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%ifndef PREFETCH
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%define PREFETCH prefetcht1
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%endif
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[bits 64]
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default rel
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section .text
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%ifidn __OUTPUT_FORMAT__, win64
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%xdefine arg1 rcx
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%xdefine arg2 rdx
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%xdefine arg3 r8
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%xdefine arg1_low32 ecx
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%else
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%xdefine arg1 rdi
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%xdefine arg2 rsi
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%xdefine arg3 rdx
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%xdefine arg1_low32 edi
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%endif
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align 16
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mk_global crc16_t10dif_by4, function
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crc16_t10dif_by4:
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endbranch
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; adjust the 16-bit initial_crc value, scale it to 32 bits
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shl arg1_low32, 16
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; After this point, code flow is exactly same as a 32-bit CRC.
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; The only difference is before returning eax, we will shift
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; it right 16 bits, to scale back to 16 bits.
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sub rsp,16*4+8
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; push the xmm registers into the stack to maintain
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movdqa [rsp+16*2],xmm6
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movdqa [rsp+16*3],xmm7
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; check if smaller than 128B
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cmp arg3, 128
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; for sizes less than 128, we can't fold 64B at a time...
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jl _less_than_128
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; load the initial crc value
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movd xmm6, arg1_low32 ; initial crc
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; crc value does not need to be byte-reflected, but it needs to
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; be moved to the high part of the register.
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; because data will be byte-reflected and will align with
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; initial crc at correct place.
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pslldq xmm6, 12
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movdqa xmm7, [SHUF_MASK]
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; receive the initial 64B data, xor the initial crc value
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movdqu xmm0, [arg2]
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movdqu xmm1, [arg2+16]
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movdqu xmm2, [arg2+32]
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movdqu xmm3, [arg2+48]
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pshufb xmm0, xmm7
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; XOR the initial_crc value
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pxor xmm0, xmm6
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pshufb xmm1, xmm7
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pshufb xmm2, xmm7
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pshufb xmm3, xmm7
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movdqa xmm6, [rk3] ;xmm6 has rk3 and rk4
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;imm value of pclmulqdq instruction
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;will determine which constant to use
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; we subtract 128 instead of 64 to save one instruction from the loop
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sub arg3, 128
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; at this section of the code, there is 64*x+y (0<=y<64) bytes of
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; buffer. The _fold_64_B_loop
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; loop will fold 64B at a time until we have 64+y Bytes of buffer
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%if fetch_dist != 0
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; check if there is at least 4KB (fetch distance) + 64B in the buffer
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cmp arg3, (fetch_dist + 64)
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jb _fold_64_B_loop
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; fold 64B at a time. This section of the code folds 4 xmm
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; registers in parallel
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align 16
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_fold_and_prefetch_64_B_loop:
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; update the buffer pointer
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add arg2, 64 ; buf += 64;
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PREFETCH [arg2+fetch_dist+0]
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movdqu xmm4, xmm0
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movdqu xmm5, xmm1
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pclmulqdq xmm0, xmm6 , 0x11
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pclmulqdq xmm1, xmm6 , 0x11
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pclmulqdq xmm4, xmm6, 0x0
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pclmulqdq xmm5, xmm6, 0x0
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pxor xmm0, xmm4
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pxor xmm1, xmm5
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movdqu xmm4, xmm2
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movdqu xmm5, xmm3
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pclmulqdq xmm2, xmm6, 0x11
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pclmulqdq xmm3, xmm6, 0x11
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pclmulqdq xmm4, xmm6, 0x0
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pclmulqdq xmm5, xmm6, 0x0
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pxor xmm2, xmm4
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pxor xmm3, xmm5
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movdqu xmm4, [arg2]
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movdqu xmm5, [arg2+16]
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pshufb xmm4, xmm7
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pshufb xmm5, xmm7
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pxor xmm0, xmm4
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pxor xmm1, xmm5
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movdqu xmm4, [arg2+32]
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movdqu xmm5, [arg2+48]
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pshufb xmm4, xmm7
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pshufb xmm5, xmm7
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pxor xmm2, xmm4
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pxor xmm3, xmm5
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sub arg3, 64
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; check if there is another 64B in the buffer to be able to fold
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cmp arg3, (fetch_dist + 64)
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jge _fold_and_prefetch_64_B_loop
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%endif ; fetch_dist != 0
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; fold 64B at a time. This section of the code folds 4 xmm
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; registers in parallel
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align 16
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_fold_64_B_loop:
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; update the buffer pointer
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add arg2, 64 ; buf += 64;
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movdqu xmm4, xmm0
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movdqu xmm5, xmm1
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pclmulqdq xmm0, xmm6 , 0x11
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pclmulqdq xmm1, xmm6 , 0x11
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pclmulqdq xmm4, xmm6, 0x0
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pclmulqdq xmm5, xmm6, 0x0
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pxor xmm0, xmm4
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pxor xmm1, xmm5
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movdqu xmm4, xmm2
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movdqu xmm5, xmm3
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pclmulqdq xmm2, xmm6, 0x11
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pclmulqdq xmm3, xmm6, 0x11
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pclmulqdq xmm4, xmm6, 0x0
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pclmulqdq xmm5, xmm6, 0x0
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pxor xmm2, xmm4
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pxor xmm3, xmm5
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movdqu xmm4, [arg2]
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movdqu xmm5, [arg2+16]
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pshufb xmm4, xmm7
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pshufb xmm5, xmm7
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pxor xmm0, xmm4
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pxor xmm1, xmm5
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movdqu xmm4, [arg2+32]
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movdqu xmm5, [arg2+48]
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pshufb xmm4, xmm7
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pshufb xmm5, xmm7
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pxor xmm2, xmm4
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pxor xmm3, xmm5
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sub arg3, 64
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; check if there is another 64B in the buffer to be able to fold
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jge _fold_64_B_loop
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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add arg2, 64
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; at this point, the buffer pointer is pointing at the last y Bytes of the buffer
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; the 64B of folded data is in 4 of the xmm registers: xmm0, xmm1, xmm2, xmm3
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; fold the 4 xmm registers to 1 xmm register with different constants
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movdqa xmm6, [rk1] ;xmm6 has rk1 and rk2
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;imm value of pclmulqdq instruction will
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;determine which constant to use
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movdqa xmm4, xmm0
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pclmulqdq xmm0, xmm6, 0x11
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pclmulqdq xmm4, xmm6, 0x0
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pxor xmm1, xmm4
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pxor xmm1, xmm0
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movdqa xmm4, xmm1
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pclmulqdq xmm1, xmm6, 0x11
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pclmulqdq xmm4, xmm6, 0x0
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pxor xmm2, xmm4
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pxor xmm2, xmm1
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movdqa xmm4, xmm2
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pclmulqdq xmm2, xmm6, 0x11
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pclmulqdq xmm4, xmm6, 0x0
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pxor xmm3, xmm4
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pxor xmm3, xmm2
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; instead of 64, we add 48 to the loop counter to save 1 instruction from the loop
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; instead of a cmp instruction, we use the negative flag with the jl instruction
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add arg3, 64-16
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jl _final_reduction_for_128
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; now we have 16+y bytes left to reduce. 16 Bytes
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; is in register xmm3 and the rest is in memory
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; we can fold 16 bytes at a time if y>=16
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; continue folding 16B at a time
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_16B_reduction_loop:
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movdqa xmm4, xmm3
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pclmulqdq xmm3, xmm6, 0x11
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pclmulqdq xmm4, xmm6, 0x0
|
|
||||||
pxor xmm3, xmm4
|
|
||||||
movdqu xmm0, [arg2]
|
|
||||||
pshufb xmm0, xmm7
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
add arg2, 16
|
|
||||||
sub arg3, 16
|
|
||||||
; instead of a cmp instruction, we utilize the flags with the jge instruction
|
|
||||||
; equivalent of: cmp arg3, 16-16
|
|
||||||
; check if there is any more 16B in the buffer to be able to fold
|
|
||||||
jge _16B_reduction_loop
|
|
||||||
|
|
||||||
;now we have 16+z bytes left to reduce, where 0<= z < 16.
|
|
||||||
;first, we reduce the data in the xmm3 register
|
|
||||||
|
|
||||||
|
|
||||||
_final_reduction_for_128:
|
|
||||||
; check if any more data to fold. If not, compute the CRC of the final 128 bits
|
|
||||||
add arg3, 16
|
|
||||||
je _128_done
|
|
||||||
|
|
||||||
; here we are getting data that is less than 16 bytes.
|
|
||||||
; since we know that there was data before the pointer,
|
|
||||||
; we can offset the input pointer before the actual point,
|
|
||||||
; to receive exactly 16 bytes.
|
|
||||||
; after that the registers need to be adjusted.
|
|
||||||
_get_last_two_xmms:
|
|
||||||
movdqa xmm2, xmm3
|
|
||||||
|
|
||||||
movdqu xmm1, [arg2 - 16 + arg3]
|
|
||||||
pshufb xmm1, xmm7
|
|
||||||
|
|
||||||
; get rid of the extra data that was loaded before
|
|
||||||
; load the shift constant
|
|
||||||
lea rax, [pshufb_shf_table + 16]
|
|
||||||
sub rax, arg3
|
|
||||||
movdqu xmm0, [rax]
|
|
||||||
|
|
||||||
; shift xmm2 to the left by arg3 bytes
|
|
||||||
pshufb xmm2, xmm0
|
|
||||||
|
|
||||||
; shift xmm3 to the right by 16-arg3 bytes
|
|
||||||
pxor xmm0, [mask1]
|
|
||||||
pshufb xmm3, xmm0
|
|
||||||
pblendvb xmm1, xmm2 ;xmm0 is implicit
|
|
||||||
|
|
||||||
; fold 16 Bytes
|
|
||||||
movdqa xmm2, xmm1
|
|
||||||
movdqa xmm4, xmm3
|
|
||||||
pclmulqdq xmm3, xmm6, 0x11
|
|
||||||
pclmulqdq xmm4, xmm6, 0x0
|
|
||||||
pxor xmm3, xmm4
|
|
||||||
pxor xmm3, xmm2
|
|
||||||
|
|
||||||
_128_done:
|
|
||||||
; compute crc of a 128-bit value
|
|
||||||
movdqa xmm6, [rk5] ; rk5 and rk6 in xmm6
|
|
||||||
movdqa xmm0, xmm3
|
|
||||||
|
|
||||||
;64b fold
|
|
||||||
pclmulqdq xmm3, xmm6, 0x1
|
|
||||||
pslldq xmm0, 8
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
|
|
||||||
;32b fold
|
|
||||||
movdqa xmm0, xmm3
|
|
||||||
|
|
||||||
pand xmm0, [mask2]
|
|
||||||
|
|
||||||
psrldq xmm3, 12
|
|
||||||
pclmulqdq xmm3, xmm6, 0x10
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
|
|
||||||
;barrett reduction
|
|
||||||
_barrett:
|
|
||||||
movdqa xmm6, [rk7] ; rk7 and rk8 in xmm6
|
|
||||||
movdqa xmm0, xmm3
|
|
||||||
pclmulqdq xmm3, xmm6, 0x01
|
|
||||||
pslldq xmm3, 4
|
|
||||||
pclmulqdq xmm3, xmm6, 0x11
|
|
||||||
|
|
||||||
pslldq xmm3, 4
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
pextrd eax, xmm3,1
|
|
||||||
|
|
||||||
_cleanup:
|
|
||||||
; scale the result back to 16 bits
|
|
||||||
shr eax, 16
|
|
||||||
movdqa xmm6, [rsp+16*2]
|
|
||||||
movdqa xmm7, [rsp+16*3]
|
|
||||||
add rsp,16*4+8
|
|
||||||
ret
|
|
||||||
|
|
||||||
|
|
||||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
||||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
||||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
||||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
||||||
|
|
||||||
align 16
|
|
||||||
_less_than_128:
|
|
||||||
|
|
||||||
; check if there is enough buffer to be able to fold 16B at a time
|
|
||||||
cmp arg3, 32
|
|
||||||
jl _less_than_32
|
|
||||||
movdqa xmm7, [SHUF_MASK]
|
|
||||||
|
|
||||||
; if there is, load the constants
|
|
||||||
movdqa xmm6, [rk1] ; rk1 and rk2 in xmm6
|
|
||||||
|
|
||||||
movd xmm0, arg1_low32 ; get the initial crc value
|
|
||||||
pslldq xmm0, 12 ; align it to its correct place
|
|
||||||
movdqu xmm3, [arg2] ; load the plaintext
|
|
||||||
pshufb xmm3, xmm7 ; byte-reflect the plaintext
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
|
|
||||||
|
|
||||||
; update the buffer pointer
|
|
||||||
add arg2, 16
|
|
||||||
|
|
||||||
; update the counter. subtract 32 instead of 16 to save one instruction from the loop
|
|
||||||
sub arg3, 32
|
|
||||||
|
|
||||||
jmp _16B_reduction_loop
|
|
||||||
|
|
||||||
|
|
||||||
align 16
|
|
||||||
_less_than_32:
|
|
||||||
; mov initial crc to the return value. this is necessary for zero-length buffers.
|
|
||||||
mov eax, arg1_low32
|
|
||||||
test arg3, arg3
|
|
||||||
je _cleanup
|
|
||||||
|
|
||||||
movdqa xmm7, [SHUF_MASK]
|
|
||||||
|
|
||||||
movd xmm0, arg1_low32 ; get the initial crc value
|
|
||||||
pslldq xmm0, 12 ; align it to its correct place
|
|
||||||
|
|
||||||
cmp arg3, 16
|
|
||||||
je _exact_16_left
|
|
||||||
jl _less_than_16_left
|
|
||||||
|
|
||||||
movdqu xmm3, [arg2] ; load the plaintext
|
|
||||||
pshufb xmm3, xmm7 ; byte-reflect the plaintext
|
|
||||||
pxor xmm3, xmm0 ; xor the initial crc value
|
|
||||||
add arg2, 16
|
|
||||||
sub arg3, 16
|
|
||||||
movdqa xmm6, [rk1] ; rk1 and rk2 in xmm6
|
|
||||||
jmp _get_last_two_xmms
|
|
||||||
|
|
||||||
|
|
||||||
align 16
|
|
||||||
_less_than_16_left:
|
|
||||||
; use stack space to load data less than 16 bytes, zero-out the 16B in memory first.
|
|
||||||
|
|
||||||
pxor xmm1, xmm1
|
|
||||||
mov r11, rsp
|
|
||||||
movdqa [r11], xmm1
|
|
||||||
|
|
||||||
cmp arg3, 4
|
|
||||||
jl _only_less_than_4
|
|
||||||
|
|
||||||
; 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:
|
|
||||||
movdqa xmm3, [rsp]
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
pxor xmm3, xmm0 ; xor the initial crc value
|
|
||||||
|
|
||||||
; shl r9, 4
|
|
||||||
lea rax, [pshufb_shf_table + 16]
|
|
||||||
sub rax, r9
|
|
||||||
movdqu xmm0, [rax]
|
|
||||||
pxor xmm0, [mask1]
|
|
||||||
|
|
||||||
pshufb xmm3, xmm0
|
|
||||||
jmp _128_done
|
|
||||||
|
|
||||||
align 16
|
|
||||||
_exact_16_left:
|
|
||||||
movdqu xmm3, [arg2]
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
pxor xmm3, xmm0 ; xor the initial crc value
|
|
||||||
|
|
||||||
jmp _128_done
|
|
||||||
|
|
||||||
_only_less_than_4:
|
|
||||||
cmp arg3, 3
|
|
||||||
jl _only_less_than_3
|
|
||||||
|
|
||||||
; load 3 Bytes
|
|
||||||
mov al, [arg2]
|
|
||||||
mov [r11], al
|
|
||||||
|
|
||||||
mov al, [arg2+1]
|
|
||||||
mov [r11+1], al
|
|
||||||
|
|
||||||
mov al, [arg2+2]
|
|
||||||
mov [r11+2], al
|
|
||||||
|
|
||||||
movdqa xmm3, [rsp]
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
pxor xmm3, xmm0 ; xor the initial crc value
|
|
||||||
|
|
||||||
psrldq xmm3, 5
|
|
||||||
|
|
||||||
jmp _barrett
|
|
||||||
_only_less_than_3:
|
|
||||||
cmp arg3, 2
|
|
||||||
jl _only_less_than_2
|
|
||||||
|
|
||||||
; load 2 Bytes
|
|
||||||
mov al, [arg2]
|
|
||||||
mov [r11], al
|
|
||||||
|
|
||||||
mov al, [arg2+1]
|
|
||||||
mov [r11+1], al
|
|
||||||
|
|
||||||
movdqa xmm3, [rsp]
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
pxor xmm3, xmm0 ; xor the initial crc value
|
|
||||||
|
|
||||||
psrldq xmm3, 6
|
|
||||||
|
|
||||||
jmp _barrett
|
|
||||||
_only_less_than_2:
|
|
||||||
|
|
||||||
; load 1 Byte
|
|
||||||
mov al, [arg2]
|
|
||||||
mov [r11], al
|
|
||||||
|
|
||||||
movdqa xmm3, [rsp]
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
pxor xmm3, xmm0 ; xor the initial crc value
|
|
||||||
|
|
||||||
psrldq xmm3, 7
|
|
||||||
|
|
||||||
jmp _barrett
|
|
||||||
|
|
||||||
section .data
|
|
||||||
|
|
||||||
; precomputed constants
|
|
||||||
; these constants are precomputed from the poly: 0x8bb70000 (0x8bb7 scaled to 32 bits)
|
|
||||||
align 16
|
|
||||||
; Q = 0x18BB70000
|
|
||||||
; rk1 = 2^(32*3) mod Q << 32
|
|
||||||
; rk2 = 2^(32*5) mod Q << 32
|
|
||||||
; rk3 = 2^(32*15) mod Q << 32
|
|
||||||
; rk4 = 2^(32*17) mod Q << 32
|
|
||||||
; rk5 = 2^(32*3) mod Q << 32
|
|
||||||
; rk6 = 2^(32*2) mod Q << 32
|
|
||||||
; rk7 = floor(2^64/Q)
|
|
||||||
; rk8 = Q
|
|
||||||
rk1:
|
|
||||||
DQ 0x2d56000000000000
|
|
||||||
rk2:
|
|
||||||
DQ 0x06df000000000000
|
|
||||||
rk3:
|
|
||||||
DQ 0x044c000000000000
|
|
||||||
rk4:
|
|
||||||
DQ 0xe658000000000000
|
|
||||||
rk5:
|
|
||||||
DQ 0x2d56000000000000
|
|
||||||
rk6:
|
|
||||||
DQ 0x1368000000000000
|
|
||||||
rk7:
|
|
||||||
DQ 0x00000001f65a57f8
|
|
||||||
rk8:
|
|
||||||
DQ 0x000000018bb70000
|
|
||||||
mask1:
|
|
||||||
dq 0x8080808080808080, 0x8080808080808080
|
|
||||||
mask2:
|
|
||||||
dq 0xFFFFFFFFFFFFFFFF, 0x00000000FFFFFFFF
|
|
||||||
|
|
||||||
SHUF_MASK:
|
|
||||||
dq 0x08090A0B0C0D0E0F, 0x0001020304050607
|
|
||||||
|
|
||||||
pshufb_shf_table:
|
|
||||||
; use these values for shift constants for the pshufb instruction
|
|
||||||
; different alignments result in values as shown:
|
|
||||||
; dq 0x8887868584838281, 0x008f8e8d8c8b8a89 ; shl 15 (16-1) / shr1
|
|
||||||
; dq 0x8988878685848382, 0x01008f8e8d8c8b8a ; shl 14 (16-3) / shr2
|
|
||||||
; dq 0x8a89888786858483, 0x0201008f8e8d8c8b ; shl 13 (16-4) / shr3
|
|
||||||
; dq 0x8b8a898887868584, 0x030201008f8e8d8c ; shl 12 (16-4) / shr4
|
|
||||||
; dq 0x8c8b8a8988878685, 0x04030201008f8e8d ; shl 11 (16-5) / shr5
|
|
||||||
; dq 0x8d8c8b8a89888786, 0x0504030201008f8e ; shl 10 (16-6) / shr6
|
|
||||||
; dq 0x8e8d8c8b8a898887, 0x060504030201008f ; shl 9 (16-7) / shr7
|
|
||||||
; dq 0x8f8e8d8c8b8a8988, 0x0706050403020100 ; shl 8 (16-8) / shr8
|
|
||||||
; dq 0x008f8e8d8c8b8a89, 0x0807060504030201 ; shl 7 (16-9) / shr9
|
|
||||||
; dq 0x01008f8e8d8c8b8a, 0x0908070605040302 ; shl 6 (16-10) / shr10
|
|
||||||
; dq 0x0201008f8e8d8c8b, 0x0a09080706050403 ; shl 5 (16-11) / shr11
|
|
||||||
; dq 0x030201008f8e8d8c, 0x0b0a090807060504 ; shl 4 (16-12) / shr12
|
|
||||||
; dq 0x04030201008f8e8d, 0x0c0b0a0908070605 ; shl 3 (16-13) / shr13
|
|
||||||
; dq 0x0504030201008f8e, 0x0d0c0b0a09080706 ; shl 2 (16-14) / shr14
|
|
||||||
; dq 0x060504030201008f, 0x0e0d0c0b0a090807 ; shl 1 (16-15) / shr15
|
|
||||||
dq 0x8786858483828100, 0x8f8e8d8c8b8a8988
|
|
||||||
dq 0x0706050403020100, 0x000e0d0c0b0a0908
|
|
||||||
@@ -1,626 +0,0 @@
|
|||||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
||||||
; Copyright(c) 2011-2015 Intel Corporation All rights reserved.
|
|
||||||
;
|
|
||||||
; Redistribution and use in source and binary forms, with or without
|
|
||||||
; modification, are permitted provided that the following conditions
|
|
||||||
; are met:
|
|
||||||
; * Redistributions of source code must retain the above copyright
|
|
||||||
; notice, this list of conditions and the following disclaimer.
|
|
||||||
; * Redistributions in binary form must reproduce the above copyright
|
|
||||||
; notice, this list of conditions and the following disclaimer in
|
|
||||||
; the documentation and/or other materials provided with the
|
|
||||||
; distribution.
|
|
||||||
; * Neither the name of Intel Corporation nor the names of its
|
|
||||||
; contributors may be used to endorse or promote products derived
|
|
||||||
; from this software without specific prior written permission.
|
|
||||||
;
|
|
||||||
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
||||||
; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
||||||
; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
||||||
; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
||||||
; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
||||||
; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
||||||
; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
||||||
; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
||||||
; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
||||||
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
||||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
||||||
;
|
|
||||||
; Function API:
|
|
||||||
; UINT32 crc32_ieee_by4(
|
|
||||||
; UINT32 init_crc, //initial CRC value, 32 bits
|
|
||||||
; const unsigned char *buf, //buffer pointer to calculate CRC on
|
|
||||||
; UINT64 len //buffer length in bytes (64-bit data)
|
|
||||||
; );
|
|
||||||
;
|
|
||||||
; Authors:
|
|
||||||
; Erdinc Ozturk
|
|
||||||
; Vinodh Gopal
|
|
||||||
; James Guilford
|
|
||||||
;
|
|
||||||
; Reference paper titled "Fast CRC Computation for Generic Polynomials Using PCLMULQDQ Instruction"
|
|
||||||
; URL: http://download.intel.com/design/intarch/papers/323102.pdf
|
|
||||||
;
|
|
||||||
|
|
||||||
%include "reg_sizes.asm"
|
|
||||||
|
|
||||||
%ifndef fetch_dist
|
|
||||||
%define fetch_dist 4096
|
|
||||||
%endif
|
|
||||||
|
|
||||||
%ifndef PREFETCH
|
|
||||||
%define PREFETCH prefetcht1
|
|
||||||
%endif
|
|
||||||
|
|
||||||
[bits 64]
|
|
||||||
default rel
|
|
||||||
|
|
||||||
section .text
|
|
||||||
|
|
||||||
%ifidn __OUTPUT_FORMAT__, win64
|
|
||||||
%xdefine arg1 rcx
|
|
||||||
%xdefine arg2 rdx
|
|
||||||
%xdefine arg3 r8
|
|
||||||
|
|
||||||
%xdefine arg1_low32 ecx
|
|
||||||
%else
|
|
||||||
%xdefine arg1 rdi
|
|
||||||
%xdefine arg2 rsi
|
|
||||||
%xdefine arg3 rdx
|
|
||||||
|
|
||||||
%xdefine arg1_low32 edi
|
|
||||||
%endif
|
|
||||||
|
|
||||||
%ifidn __OUTPUT_FORMAT__, win64
|
|
||||||
%define XMM_SAVE 16*2
|
|
||||||
%define VARIABLE_OFFSET 16*4+8
|
|
||||||
%else
|
|
||||||
%define VARIABLE_OFFSET 16*2+8
|
|
||||||
%endif
|
|
||||||
|
|
||||||
align 16
|
|
||||||
mk_global crc32_ieee_by4, function
|
|
||||||
crc32_ieee_by4:
|
|
||||||
endbranch
|
|
||||||
|
|
||||||
not arg1_low32
|
|
||||||
|
|
||||||
sub rsp,VARIABLE_OFFSET
|
|
||||||
|
|
||||||
%ifidn __OUTPUT_FORMAT__, win64
|
|
||||||
; push the xmm registers into the stack to maintain
|
|
||||||
movdqa [rsp + XMM_SAVE + 16*0],xmm6
|
|
||||||
movdqa [rsp + XMM_SAVE + 16*1],xmm7
|
|
||||||
%endif
|
|
||||||
|
|
||||||
; check if smaller than 128B
|
|
||||||
cmp arg3, 128
|
|
||||||
jl _less_than_128
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
; load the initial crc value
|
|
||||||
movd xmm6, arg1_low32 ; initial crc
|
|
||||||
; crc value does not need to be byte-reflected, but it needs to be
|
|
||||||
; moved to the high part of the register.
|
|
||||||
; because data will be byte-reflected and will align with initial
|
|
||||||
; crc at correct place.
|
|
||||||
pslldq xmm6, 12
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
movdqa xmm7, [SHUF_MASK]
|
|
||||||
; receive the initial 64B data, xor the initial crc value
|
|
||||||
movdqu xmm0, [arg2]
|
|
||||||
movdqu xmm1, [arg2+16]
|
|
||||||
movdqu xmm2, [arg2+32]
|
|
||||||
movdqu xmm3, [arg2+48]
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
pshufb xmm0, xmm7
|
|
||||||
; XOR the initial_crc value
|
|
||||||
pxor xmm0, xmm6
|
|
||||||
pshufb xmm1, xmm7
|
|
||||||
pshufb xmm2, xmm7
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
|
|
||||||
movdqa xmm6, [rk3] ; k3=2^480 mod POLY << 32
|
|
||||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
||||||
;we subtract 128 instead of 64 to save one instruction from the loop
|
|
||||||
sub arg3, 128
|
|
||||||
|
|
||||||
; at this section of the code, there is 64*x+y (0<=y<64) bytes of
|
|
||||||
; buffer. The _fold_64_B_loop loop will fold 64B at a time until we
|
|
||||||
; have 64+y Bytes of buffer
|
|
||||||
|
|
||||||
%if fetch_dist != 0
|
|
||||||
; check if there is another 4KB (fetch distance) + 128B in the buffer
|
|
||||||
cmp arg3, (fetch_dist + 64)
|
|
||||||
jge _fold_and_prefetch_64_B_loop
|
|
||||||
|
|
||||||
; fold 64B at a time. This section of the code folds 4 xmm registers in parallel
|
|
||||||
align 16
|
|
||||||
_fold_and_prefetch_64_B_loop:
|
|
||||||
;update the buffer pointer
|
|
||||||
add arg2, 64
|
|
||||||
|
|
||||||
movdqa xmm4, xmm0
|
|
||||||
movdqa xmm5, xmm1
|
|
||||||
|
|
||||||
pclmulqdq xmm0, xmm6 , 0x11
|
|
||||||
pclmulqdq xmm1, xmm6 , 0x11
|
|
||||||
|
|
||||||
pclmulqdq xmm4, xmm6, 0x0
|
|
||||||
pclmulqdq xmm5, xmm6, 0x0
|
|
||||||
|
|
||||||
pxor xmm0, xmm4
|
|
||||||
pxor xmm1, xmm5
|
|
||||||
|
|
||||||
movdqa xmm4, xmm2
|
|
||||||
movdqa xmm5, xmm3
|
|
||||||
|
|
||||||
pclmulqdq xmm2, xmm6, 0x11
|
|
||||||
pclmulqdq xmm3, xmm6, 0x11
|
|
||||||
|
|
||||||
pclmulqdq xmm4, xmm6, 0x0
|
|
||||||
pclmulqdq xmm5, xmm6, 0x0
|
|
||||||
|
|
||||||
pxor xmm2, xmm4
|
|
||||||
pxor xmm3, xmm5
|
|
||||||
|
|
||||||
movdqu xmm4, [arg2]
|
|
||||||
movdqu xmm5, [arg2+16]
|
|
||||||
pshufb xmm4, xmm7
|
|
||||||
pshufb xmm5, xmm7
|
|
||||||
pxor xmm0, xmm4
|
|
||||||
pxor xmm1, xmm5
|
|
||||||
|
|
||||||
movdqu xmm4, [arg2+32]
|
|
||||||
movdqu xmm5, [arg2+48]
|
|
||||||
pshufb xmm4, xmm7
|
|
||||||
pshufb xmm5, xmm7
|
|
||||||
|
|
||||||
pxor xmm2, xmm4
|
|
||||||
pxor xmm3, xmm5
|
|
||||||
|
|
||||||
sub arg3, 64
|
|
||||||
|
|
||||||
; check if there is another 4KB (fetch distance) + 64B in the buffer
|
|
||||||
cmp arg3, (fetch_dist + 64)
|
|
||||||
jge _fold_and_prefetch_64_B_loop
|
|
||||||
|
|
||||||
%endif ; fetch_dist != 0
|
|
||||||
|
|
||||||
; fold 64B at a time. This section of the code folds 4 xmm registers in parallel
|
|
||||||
align 16
|
|
||||||
_fold_64_B_loop:
|
|
||||||
|
|
||||||
;update the buffer pointer
|
|
||||||
add arg2, 64
|
|
||||||
|
|
||||||
PREFETCH [arg2+fetch_dist+0]
|
|
||||||
movdqa xmm4, xmm0
|
|
||||||
movdqa xmm5, xmm1
|
|
||||||
|
|
||||||
pclmulqdq xmm0, xmm6 , 0x11
|
|
||||||
pclmulqdq xmm1, xmm6 , 0x11
|
|
||||||
|
|
||||||
pclmulqdq xmm4, xmm6, 0x0
|
|
||||||
pclmulqdq xmm5, xmm6, 0x0
|
|
||||||
|
|
||||||
pxor xmm0, xmm4
|
|
||||||
pxor xmm1, xmm5
|
|
||||||
|
|
||||||
movdqa xmm4, xmm2
|
|
||||||
movdqa xmm5, xmm3
|
|
||||||
|
|
||||||
pclmulqdq xmm2, xmm6, 0x11
|
|
||||||
pclmulqdq xmm3, xmm6, 0x11
|
|
||||||
|
|
||||||
pclmulqdq xmm4, xmm6, 0x0
|
|
||||||
pclmulqdq xmm5, xmm6, 0x0
|
|
||||||
|
|
||||||
pxor xmm2, xmm4
|
|
||||||
pxor xmm3, xmm5
|
|
||||||
|
|
||||||
movdqu xmm4, [arg2]
|
|
||||||
movdqu xmm5, [arg2+16]
|
|
||||||
pshufb xmm4, xmm7
|
|
||||||
pshufb xmm5, xmm7
|
|
||||||
pxor xmm0, xmm4
|
|
||||||
pxor xmm1, xmm5
|
|
||||||
|
|
||||||
movdqu xmm4, [arg2+32]
|
|
||||||
movdqu xmm5, [arg2+48]
|
|
||||||
pshufb xmm4, xmm7
|
|
||||||
pshufb xmm5, xmm7
|
|
||||||
|
|
||||||
pxor xmm2, xmm4
|
|
||||||
pxor xmm3, xmm5
|
|
||||||
|
|
||||||
sub arg3, 64
|
|
||||||
|
|
||||||
; check if there is another 64B in the buffer to be able to fold
|
|
||||||
jge _fold_64_B_loop
|
|
||||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
||||||
|
|
||||||
|
|
||||||
add arg2, 64
|
|
||||||
;at this point, the arg2 is pointing at the last y Bytes of the buffer
|
|
||||||
; the 64B of data is in 4 of the xmm registers: xmm0, xmm1, xmm2, xmm3
|
|
||||||
|
|
||||||
|
|
||||||
movdqa xmm6, [rk1] ;k1
|
|
||||||
|
|
||||||
; fold the 4 xmm registers to 1 xmm register with different constants
|
|
||||||
movdqa xmm4, xmm0
|
|
||||||
pclmulqdq xmm0, xmm6, 0x11
|
|
||||||
pclmulqdq xmm4, xmm6, 0x0
|
|
||||||
pxor xmm1, xmm4
|
|
||||||
xorps xmm1, xmm0
|
|
||||||
|
|
||||||
movdqa xmm4, xmm1
|
|
||||||
pclmulqdq xmm1, xmm6, 0x11
|
|
||||||
pclmulqdq xmm4, xmm6, 0x0
|
|
||||||
pxor xmm2, xmm4
|
|
||||||
xorps xmm2, xmm1
|
|
||||||
|
|
||||||
movdqa xmm4, xmm2
|
|
||||||
pclmulqdq xmm2, xmm6, 0x11
|
|
||||||
pclmulqdq xmm4, xmm6, 0x0
|
|
||||||
pxor xmm3, xmm4
|
|
||||||
pxor xmm3, xmm2
|
|
||||||
|
|
||||||
|
|
||||||
;instead of 64, we add 48 to the loop counter to save 1 instruction from the loop
|
|
||||||
; instead of a cmp instruction, we use the negative flag with the jl instruction
|
|
||||||
add arg3, 64-16
|
|
||||||
jl _final_reduction_for_128
|
|
||||||
|
|
||||||
; now we have 16+y bytes left to reduce. 16 Bytes is in register xmm3 and the rest is in memory
|
|
||||||
; we can fold 16 bytes at a time if y>=16
|
|
||||||
; continue folding 16B at a time
|
|
||||||
|
|
||||||
_16B_reduction_loop:
|
|
||||||
movdqa xmm4, xmm3
|
|
||||||
pclmulqdq xmm3, xmm6, 0x11
|
|
||||||
pclmulqdq xmm4, xmm6, 0x0
|
|
||||||
pxor xmm3, xmm4
|
|
||||||
movdqu xmm0, [arg2]
|
|
||||||
pshufb xmm0, xmm7
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
add arg2, 16
|
|
||||||
sub arg3, 16
|
|
||||||
; instead of a cmp instruction, we utilize the flags with the jge instruction
|
|
||||||
; equivalent of: cmp arg3, 16-16
|
|
||||||
; check if there is any more 16B in the buffer to be able to fold
|
|
||||||
jge _16B_reduction_loop
|
|
||||||
|
|
||||||
;now we have 16+z bytes left to reduce, where 0<= z < 16.
|
|
||||||
;first, we reduce the data in the xmm3 register
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
_final_reduction_for_128:
|
|
||||||
; check if any more data to fold. If not, compute the CRC of the final 128 bits
|
|
||||||
add arg3, 16
|
|
||||||
je _128_done
|
|
||||||
|
|
||||||
; here we are getting data that is less than 16 bytes.
|
|
||||||
; since we know that there was data before the pointer, we can offset
|
|
||||||
; the input pointer before the actual point, to receive exactly 16 bytes.
|
|
||||||
; after that the registers need to be adjusted.
|
|
||||||
_get_last_two_xmms:
|
|
||||||
movdqa xmm2, xmm3
|
|
||||||
|
|
||||||
movdqu xmm1, [arg2 - 16 + arg3]
|
|
||||||
pshufb xmm1, xmm7
|
|
||||||
|
|
||||||
shl arg3, 4
|
|
||||||
lea rax, [pshufb_shf_table + 15*16]
|
|
||||||
sub rax, arg3
|
|
||||||
movdqu xmm0, [rax]
|
|
||||||
|
|
||||||
pshufb xmm2, xmm0
|
|
||||||
|
|
||||||
pxor xmm0, [mask3]
|
|
||||||
|
|
||||||
pshufb xmm3, xmm0
|
|
||||||
|
|
||||||
pblendvb xmm1, xmm2 ;xmm0 is implicit
|
|
||||||
|
|
||||||
movdqa xmm2, xmm1
|
|
||||||
|
|
||||||
movdqa xmm4, xmm3
|
|
||||||
pclmulqdq xmm3, xmm6, 0x11
|
|
||||||
|
|
||||||
pclmulqdq xmm4, xmm6, 0x0
|
|
||||||
pxor xmm3, xmm4
|
|
||||||
pxor xmm3, xmm2
|
|
||||||
|
|
||||||
_128_done:
|
|
||||||
|
|
||||||
movdqa xmm6, [rk5]
|
|
||||||
movdqa xmm0, xmm3
|
|
||||||
|
|
||||||
;64b fold
|
|
||||||
pclmulqdq xmm3, xmm6, 0x1
|
|
||||||
pslldq xmm0, 8
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
|
|
||||||
;32b fold
|
|
||||||
movdqa xmm0, xmm3
|
|
||||||
|
|
||||||
pand xmm0, [mask4]
|
|
||||||
|
|
||||||
psrldq xmm3, 12
|
|
||||||
pclmulqdq xmm3, xmm6, 0x10
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
|
|
||||||
;barrett reduction
|
|
||||||
_barrett:
|
|
||||||
movdqa xmm6, [rk7]
|
|
||||||
movdqa xmm0, xmm3
|
|
||||||
pclmulqdq xmm3, xmm6, 0x01
|
|
||||||
pslldq xmm3, 4
|
|
||||||
pclmulqdq xmm3, xmm6, 0x11
|
|
||||||
|
|
||||||
pslldq xmm3, 4
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
pextrd eax, xmm3,1
|
|
||||||
|
|
||||||
_cleanup:
|
|
||||||
not eax
|
|
||||||
%ifidn __OUTPUT_FORMAT__, win64
|
|
||||||
movdqa xmm6, [rsp + XMM_SAVE + 16*0]
|
|
||||||
movdqa xmm7, [rsp + XMM_SAVE + 16*1]
|
|
||||||
%endif
|
|
||||||
add rsp,VARIABLE_OFFSET
|
|
||||||
|
|
||||||
|
|
||||||
ret
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
||||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
||||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
||||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
||||||
|
|
||||||
align 16
|
|
||||||
_less_than_128:
|
|
||||||
|
|
||||||
;check if there is enough buffer to be able to fold 16B at a time
|
|
||||||
cmp arg3, 32
|
|
||||||
jl _less_than_32
|
|
||||||
movdqa xmm7, [SHUF_MASK]
|
|
||||||
|
|
||||||
;if there is, load the constants
|
|
||||||
movdqa xmm6, [rk1] ;k1
|
|
||||||
|
|
||||||
movd xmm0, arg1_low32
|
|
||||||
pslldq xmm0, 12
|
|
||||||
movdqu xmm3, [arg2]
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
|
|
||||||
|
|
||||||
;update the buffer pointer
|
|
||||||
add arg2, 16
|
|
||||||
|
|
||||||
;update the counter. subtract 32 instead of 16 to save one instruction from the loop
|
|
||||||
sub arg3, 32
|
|
||||||
|
|
||||||
jmp _16B_reduction_loop
|
|
||||||
|
|
||||||
|
|
||||||
align 16
|
|
||||||
_less_than_32:
|
|
||||||
mov eax, arg1_low32
|
|
||||||
test arg3, arg3
|
|
||||||
je _cleanup
|
|
||||||
|
|
||||||
movdqa xmm7, [SHUF_MASK]
|
|
||||||
|
|
||||||
movd xmm0, arg1_low32
|
|
||||||
pslldq xmm0, 12
|
|
||||||
|
|
||||||
cmp arg3, 16
|
|
||||||
je _exact_16_left
|
|
||||||
jl _less_than_16_left
|
|
||||||
movd xmm0, arg1_low32
|
|
||||||
pslldq xmm0, 12
|
|
||||||
movdqu xmm3, [arg2]
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
add arg2, 16
|
|
||||||
sub arg3, 16
|
|
||||||
movdqa xmm6, [rk1] ;k1
|
|
||||||
jmp _get_last_two_xmms
|
|
||||||
|
|
||||||
|
|
||||||
align 16
|
|
||||||
_less_than_16_left:
|
|
||||||
; use stack space to load data less than 16 bytes, zero-out the 16B in memory first.
|
|
||||||
|
|
||||||
pxor xmm1, xmm1
|
|
||||||
mov r11, rsp
|
|
||||||
movdqa [r11], xmm1
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
cmp arg3, 4
|
|
||||||
jl _only_less_than_4
|
|
||||||
|
|
||||||
mov r9, arg3
|
|
||||||
|
|
||||||
|
|
||||||
cmp arg3, 8
|
|
||||||
jl _less_than_8_left
|
|
||||||
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
|
|
||||||
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
|
|
||||||
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
|
|
||||||
|
|
||||||
mov al, [arg2]
|
|
||||||
mov [r11], al
|
|
||||||
|
|
||||||
_zero_left:
|
|
||||||
movdqa xmm3, [rsp]
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
|
|
||||||
shl r9, 4
|
|
||||||
lea rax, [pshufb_shf_table + 15*16]
|
|
||||||
sub rax, r9
|
|
||||||
movdqu xmm0, [rax]
|
|
||||||
pxor xmm0, [mask3]
|
|
||||||
|
|
||||||
pshufb xmm3, xmm0
|
|
||||||
jmp _128_done
|
|
||||||
|
|
||||||
align 16
|
|
||||||
_exact_16_left:
|
|
||||||
movdqu xmm3, [arg2]
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
|
|
||||||
jmp _128_done
|
|
||||||
|
|
||||||
_only_less_than_4:
|
|
||||||
cmp arg3, 3
|
|
||||||
jl _only_less_than_3
|
|
||||||
mov al, [arg2]
|
|
||||||
mov [r11], al
|
|
||||||
|
|
||||||
mov al, [arg2+1]
|
|
||||||
mov [r11+1], al
|
|
||||||
|
|
||||||
mov al, [arg2+2]
|
|
||||||
mov [r11+2], al
|
|
||||||
|
|
||||||
movdqa xmm3, [rsp]
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
|
|
||||||
psrldq xmm3, 5
|
|
||||||
|
|
||||||
jmp _barrett
|
|
||||||
_only_less_than_3:
|
|
||||||
cmp arg3, 2
|
|
||||||
jl _only_less_than_2
|
|
||||||
mov al, [arg2]
|
|
||||||
mov [r11], al
|
|
||||||
|
|
||||||
mov al, [arg2+1]
|
|
||||||
mov [r11+1], al
|
|
||||||
|
|
||||||
movdqa xmm3, [rsp]
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
|
|
||||||
psrldq xmm3, 6
|
|
||||||
|
|
||||||
jmp _barrett
|
|
||||||
_only_less_than_2:
|
|
||||||
mov al, [arg2]
|
|
||||||
mov [r11], al
|
|
||||||
|
|
||||||
movdqa xmm3, [rsp]
|
|
||||||
pshufb xmm3, xmm7
|
|
||||||
pxor xmm3, xmm0
|
|
||||||
|
|
||||||
psrldq xmm3, 7
|
|
||||||
|
|
||||||
jmp _barrett
|
|
||||||
; precomputed constants
|
|
||||||
section .data
|
|
||||||
|
|
||||||
align 16
|
|
||||||
rk1:
|
|
||||||
DQ 0xf200aa6600000000
|
|
||||||
rk2:
|
|
||||||
DQ 0x17d3315d00000000
|
|
||||||
rk3:
|
|
||||||
DQ 0xd3504ec700000000
|
|
||||||
rk4:
|
|
||||||
DQ 0x57a8445500000000
|
|
||||||
rk5:
|
|
||||||
DQ 0xf200aa6600000000
|
|
||||||
rk6:
|
|
||||||
DQ 0x490d678d00000000
|
|
||||||
rk7:
|
|
||||||
DQ 0x0000000104d101df
|
|
||||||
rk8:
|
|
||||||
DQ 0x0000000104c11db7
|
|
||||||
mask:
|
|
||||||
dq 0xFFFFFFFFFFFFFFFF, 0x0000000000000000
|
|
||||||
mask2:
|
|
||||||
dq 0xFFFFFFFF00000000, 0xFFFFFFFFFFFFFFFF
|
|
||||||
mask3:
|
|
||||||
dq 0x8080808080808080, 0x8080808080808080
|
|
||||||
mask4:
|
|
||||||
dq 0xFFFFFFFFFFFFFFFF, 0x00000000FFFFFFFF
|
|
||||||
align 32
|
|
||||||
pshufb_shf_table:
|
|
||||||
|
|
||||||
dq 0x8887868584838281, 0x008f8e8d8c8b8a89 ; shl 15 (16-1) / shr1
|
|
||||||
|
|
||||||
dq 0x8988878685848382, 0x01008f8e8d8c8b8a ; shl 14 (16-3) / shr2
|
|
||||||
|
|
||||||
dq 0x8a89888786858483, 0x0201008f8e8d8c8b ; shl 13 (16-4) / shr3
|
|
||||||
|
|
||||||
dq 0x8b8a898887868584, 0x030201008f8e8d8c ; shl 12 (16-4) / shr4
|
|
||||||
|
|
||||||
dq 0x8c8b8a8988878685, 0x04030201008f8e8d ; shl 11 (16-5) / shr5
|
|
||||||
|
|
||||||
dq 0x8d8c8b8a89888786, 0x0504030201008f8e ; shl 10 (16-6) / shr6
|
|
||||||
|
|
||||||
dq 0x8e8d8c8b8a898887, 0x060504030201008f ; shl 9 (16-7) / shr7
|
|
||||||
|
|
||||||
dq 0x8f8e8d8c8b8a8988, 0x0706050403020100 ; shl 8 (16-8) / shr8
|
|
||||||
|
|
||||||
dq 0x008f8e8d8c8b8a89, 0x0807060504030201 ; shl 7 (16-9) / shr9
|
|
||||||
|
|
||||||
dq 0x01008f8e8d8c8b8a, 0x0908070605040302 ; shl 6 (16-10) / shr10
|
|
||||||
|
|
||||||
dq 0x0201008f8e8d8c8b, 0x0a09080706050403 ; shl 5 (16-11) / shr11
|
|
||||||
|
|
||||||
dq 0x030201008f8e8d8c, 0x0b0a090807060504 ; shl 4 (16-12) / shr12
|
|
||||||
|
|
||||||
dq 0x04030201008f8e8d, 0x0c0b0a0908070605 ; shl 3 (16-13) / shr13
|
|
||||||
|
|
||||||
dq 0x0504030201008f8e, 0x0d0c0b0a09080706 ; shl 2 (16-14) / shr14
|
|
||||||
|
|
||||||
dq 0x060504030201008f, 0x0e0d0c0b0a090807 ; shl 1 (16-15) / shr15
|
|
||||||
|
|
||||||
|
|
||||||
SHUF_MASK dq 0x08090A0B0C0D0E0F, 0x0001020304050607
|
|
||||||
@@ -37,12 +37,10 @@ extern crc32_iscsi_by8_02
|
|||||||
extern crc32_iscsi_base
|
extern crc32_iscsi_base
|
||||||
|
|
||||||
extern crc32_ieee_01
|
extern crc32_ieee_01
|
||||||
extern crc32_ieee_by4 ;; Optimized for SLM
|
|
||||||
extern crc32_ieee_02
|
extern crc32_ieee_02
|
||||||
extern crc32_ieee_base
|
extern crc32_ieee_base
|
||||||
|
|
||||||
extern crc16_t10dif_01
|
extern crc16_t10dif_01
|
||||||
extern crc16_t10dif_by4 ;; Optimized for SLM
|
|
||||||
extern crc16_t10dif_02
|
extern crc16_t10dif_02
|
||||||
extern crc16_t10dif_base
|
extern crc16_t10dif_base
|
||||||
|
|
||||||
@@ -101,12 +99,6 @@ crc32_ieee_dispatch_init:
|
|||||||
jz .crc_ieee_init_done ; use ieee_base
|
jz .crc_ieee_init_done ; use ieee_base
|
||||||
lea rsi, [crc32_ieee_01 WRT_OPT]
|
lea rsi, [crc32_ieee_01 WRT_OPT]
|
||||||
|
|
||||||
;; Extra Avoton test
|
|
||||||
lea rdx, [crc32_ieee_by4 WRT_OPT]
|
|
||||||
and eax, FLAG_CPUID1_EAX_STEP_MASK
|
|
||||||
cmp eax, FLAG_CPUID1_EAX_AVOTON
|
|
||||||
cmove rsi, rdx
|
|
||||||
|
|
||||||
;; Test for XMM_YMM support/AVX
|
;; Test for XMM_YMM support/AVX
|
||||||
test ecx, FLAG_CPUID1_ECX_OSXSAVE
|
test ecx, FLAG_CPUID1_ECX_OSXSAVE
|
||||||
je .crc_ieee_init_done
|
je .crc_ieee_init_done
|
||||||
@@ -180,12 +172,6 @@ crc16_t10dif_dispatch_init:
|
|||||||
jz .t10dif_init_done ; use t10dif_base
|
jz .t10dif_init_done ; use t10dif_base
|
||||||
lea rsi, [crc16_t10dif_01 WRT_OPT]
|
lea rsi, [crc16_t10dif_01 WRT_OPT]
|
||||||
|
|
||||||
;; Extra Avoton test
|
|
||||||
lea rdx, [crc16_t10dif_by4 WRT_OPT]
|
|
||||||
and eax, FLAG_CPUID1_EAX_STEP_MASK
|
|
||||||
cmp eax, FLAG_CPUID1_EAX_AVOTON
|
|
||||||
cmove rsi, rdx
|
|
||||||
|
|
||||||
;; Test for XMM_YMM support/AVX
|
;; Test for XMM_YMM support/AVX
|
||||||
test ecx, FLAG_CPUID1_ECX_OSXSAVE
|
test ecx, FLAG_CPUID1_ECX_OSXSAVE
|
||||||
je .t10dif_init_done
|
je .t10dif_init_done
|
||||||
|
|||||||
@@ -70,7 +70,6 @@
|
|||||||
%define FLAG_XGETBV_EAX_XMM_YMM 0x6
|
%define FLAG_XGETBV_EAX_XMM_YMM 0x6
|
||||||
%define FLAG_XGETBV_EAX_ZMM_OPM 0xe0
|
%define FLAG_XGETBV_EAX_ZMM_OPM 0xe0
|
||||||
|
|
||||||
%define FLAG_CPUID1_EAX_AVOTON 0x000406d0
|
|
||||||
%define FLAG_CPUID1_EAX_STEP_MASK 0xfffffff0
|
%define FLAG_CPUID1_EAX_STEP_MASK 0xfffffff0
|
||||||
|
|
||||||
; define d and w variants for registers
|
; define d and w variants for registers
|
||||||
|
|||||||
Reference in New Issue
Block a user