mirror of
https://github.com/intel/isa-l.git
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9f75defd57
The relic slver is no longer used for individual versioning on functions and is confusing tools looking for data in text sections. This removes all instances instead of fixing since its usefulness is waining. Fixes #221 Change-Id: Ife0b9f105950a90337c58e8a41ac2cffc0f67d99 Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>
623 lines
18 KiB
NASM
623 lines
18 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; Copyright(c) 2011-2017 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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; UINT32 crc32_gzip_refl_by8(
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; UINT32 init_crc, //initial CRC value, 32 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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;
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; sample yasm command line:
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; yasm -f x64 -f elf64 -X gnu -g dwarf2 crc32_gzip_refl_by8
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;
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; As explained here:
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; http://docs.oracle.com/javase/7/docs/api/java/util/zip/package-summary.html
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; CRC-32 checksum is described in RFC 1952
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; Implementing RFC 1952 CRC:
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; http://www.ietf.org/rfc/rfc1952.txt
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%include "reg_sizes.asm"
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%define fetch_dist 1024
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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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%define TMP 16*0
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%ifidn __OUTPUT_FORMAT__, win64
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%define XMM_SAVE 16*2
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%define VARIABLE_OFFSET 16*10+8
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%else
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%define VARIABLE_OFFSET 16*2+8
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%endif
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align 16
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mk_global crc32_gzip_refl_by8, function
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crc32_gzip_refl_by8:
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endbranch
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; unsigned long c = crc ^ 0xffffffffL;
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not arg1_low32 ;
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sub rsp, VARIABLE_OFFSET
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%ifidn __OUTPUT_FORMAT__, win64
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; push the xmm registers into the stack to maintain
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movdqa [rsp + XMM_SAVE + 16*0], xmm6
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movdqa [rsp + XMM_SAVE + 16*1], xmm7
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movdqa [rsp + XMM_SAVE + 16*2], xmm8
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movdqa [rsp + XMM_SAVE + 16*3], xmm9
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movdqa [rsp + XMM_SAVE + 16*4], xmm10
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movdqa [rsp + XMM_SAVE + 16*5], xmm11
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movdqa [rsp + XMM_SAVE + 16*6], xmm12
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movdqa [rsp + XMM_SAVE + 16*7], xmm13
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%endif
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; check if smaller than 256B
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cmp arg3, 256
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; for sizes less than 256, we can't fold 128B at a time...
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jl _less_than_256
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; load the initial crc value
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movd xmm10, arg1_low32 ; initial crc
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; receive the initial 64B data, xor the initial crc value
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movdqu xmm0, [arg2+16*0]
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movdqu xmm1, [arg2+16*1]
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movdqu xmm2, [arg2+16*2]
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movdqu xmm3, [arg2+16*3]
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movdqu xmm4, [arg2+16*4]
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movdqu xmm5, [arg2+16*5]
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movdqu xmm6, [arg2+16*6]
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movdqu xmm7, [arg2+16*7]
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; XOR the initial_crc value
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pxor xmm0, xmm10
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movdqa xmm10, [rk3] ;xmm10 has rk3 and rk4
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;imm value of pclmulqdq instruction will determine which constant to use
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; we subtract 256 instead of 128 to save one instruction from the loop
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sub arg3, 256
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; at this section of the code, there is 128*x+y (0<=y<128) bytes of buffer. The _fold_128_B_loop
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; loop will fold 128B at a time until we have 128+y Bytes of buffer
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; fold 128B at a time. This section of the code folds 8 xmm registers in parallel
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_fold_128_B_loop:
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; update the buffer pointer
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add arg2, 128
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prefetchnta [arg2+fetch_dist+0]
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movdqu xmm9, [arg2+16*0]
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movdqu xmm12, [arg2+16*1]
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movdqa xmm8, xmm0
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movdqa xmm13, xmm1
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pclmulqdq xmm0, xmm10, 0x10
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pclmulqdq xmm8, xmm10 , 0x1
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pclmulqdq xmm1, xmm10, 0x10
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pclmulqdq xmm13, xmm10 , 0x1
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pxor xmm0, xmm9
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xorps xmm0, xmm8
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pxor xmm1, xmm12
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xorps xmm1, xmm13
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prefetchnta [arg2+fetch_dist+32]
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movdqu xmm9, [arg2+16*2]
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movdqu xmm12, [arg2+16*3]
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movdqa xmm8, xmm2
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movdqa xmm13, xmm3
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pclmulqdq xmm2, xmm10, 0x10
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pclmulqdq xmm8, xmm10 , 0x1
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pclmulqdq xmm3, xmm10, 0x10
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pclmulqdq xmm13, xmm10 , 0x1
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pxor xmm2, xmm9
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xorps xmm2, xmm8
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pxor xmm3, xmm12
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xorps xmm3, xmm13
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prefetchnta [arg2+fetch_dist+64]
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movdqu xmm9, [arg2+16*4]
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movdqu xmm12, [arg2+16*5]
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movdqa xmm8, xmm4
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movdqa xmm13, xmm5
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pclmulqdq xmm4, xmm10, 0x10
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pclmulqdq xmm8, xmm10 , 0x1
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pclmulqdq xmm5, xmm10, 0x10
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pclmulqdq xmm13, xmm10 , 0x1
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pxor xmm4, xmm9
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xorps xmm4, xmm8
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pxor xmm5, xmm12
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xorps xmm5, xmm13
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prefetchnta [arg2+fetch_dist+96]
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movdqu xmm9, [arg2+16*6]
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movdqu xmm12, [arg2+16*7]
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movdqa xmm8, xmm6
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movdqa xmm13, xmm7
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pclmulqdq xmm6, xmm10, 0x10
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pclmulqdq xmm8, xmm10 , 0x1
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pclmulqdq xmm7, xmm10, 0x10
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pclmulqdq xmm13, xmm10 , 0x1
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pxor xmm6, xmm9
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xorps xmm6, xmm8
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pxor xmm7, xmm12
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xorps xmm7, xmm13
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sub arg3, 128
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; check if there is another 128B in the buffer to be able to fold
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jge _fold_128_B_loop
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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add arg2, 128
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; at this point, the buffer pointer is pointing at the last y Bytes of the buffer, where 0 <= y < 128
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; the 128B of folded data is in 8 of the xmm registers: xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7
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; fold the 8 xmm registers to 1 xmm register with different constants
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movdqa xmm10, [rk9]
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movdqa xmm8, xmm0
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pclmulqdq xmm0, xmm10, 0x1
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pclmulqdq xmm8, xmm10, 0x10
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pxor xmm7, xmm8
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xorps xmm7, xmm0
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movdqa xmm10, [rk11]
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movdqa xmm8, xmm1
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pclmulqdq xmm1, xmm10, 0x1
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pclmulqdq xmm8, xmm10, 0x10
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pxor xmm7, xmm8
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xorps xmm7, xmm1
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movdqa xmm10, [rk13]
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movdqa xmm8, xmm2
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pclmulqdq xmm2, xmm10, 0x1
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pclmulqdq xmm8, xmm10, 0x10
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pxor xmm7, xmm8
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pxor xmm7, xmm2
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movdqa xmm10, [rk15]
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movdqa xmm8, xmm3
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pclmulqdq xmm3, xmm10, 0x1
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pclmulqdq xmm8, xmm10, 0x10
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pxor xmm7, xmm8
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xorps xmm7, xmm3
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movdqa xmm10, [rk17]
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movdqa xmm8, xmm4
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pclmulqdq xmm4, xmm10, 0x1
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pclmulqdq xmm8, xmm10, 0x10
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pxor xmm7, xmm8
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pxor xmm7, xmm4
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movdqa xmm10, [rk19]
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movdqa xmm8, xmm5
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pclmulqdq xmm5, xmm10, 0x1
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pclmulqdq xmm8, xmm10, 0x10
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pxor xmm7, xmm8
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xorps xmm7, xmm5
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movdqa xmm10, [rk1]
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movdqa xmm8, xmm6
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pclmulqdq xmm6, xmm10, 0x1
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pclmulqdq xmm8, xmm10, 0x10
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pxor xmm7, xmm8
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pxor xmm7, xmm6
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; instead of 128, we add 128-16 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, 128-16
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jl _final_reduction_for_128
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; now we have 16+y bytes left to reduce. 16 Bytes is in register xmm7 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 xmm8, xmm7
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pclmulqdq xmm7, xmm10, 0x1
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pclmulqdq xmm8, xmm10, 0x10
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pxor xmm7, xmm8
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movdqu xmm0, [arg2]
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pxor xmm7, xmm0
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add arg2, 16
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sub arg3, 16
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; instead of a cmp instruction, we utilize the flags with the jge instruction
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; equivalent of: cmp arg3, 16-16
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; check if there is any more 16B in the buffer to be able to fold
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jge _16B_reduction_loop
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;now we have 16+z bytes left to reduce, where 0<= z < 16.
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;first, we reduce the data in the xmm7 register
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_final_reduction_for_128:
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add arg3, 16
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je _128_done
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; here we are getting data that is less than 16 bytes.
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; 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.
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; after that the registers need to be adjusted.
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_get_last_two_xmms:
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movdqa xmm2, xmm7
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movdqu xmm1, [arg2 - 16 + arg3]
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; get rid of the extra data that was loaded before
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; load the shift constant
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lea rax, [pshufb_shf_table]
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add rax, arg3
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movdqu xmm0, [rax]
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pshufb xmm7, xmm0
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pxor xmm0, [mask3]
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pshufb xmm2, xmm0
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pblendvb xmm2, xmm1 ;xmm0 is implicit
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;;;;;;;;;;
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movdqa xmm8, xmm7
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pclmulqdq xmm7, xmm10, 0x1
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pclmulqdq xmm8, xmm10, 0x10
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pxor xmm7, xmm8
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pxor xmm7, xmm2
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_128_done:
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; compute crc of a 128-bit value
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movdqa xmm10, [rk5]
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movdqa xmm0, xmm7
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;64b fold
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pclmulqdq xmm7, xmm10, 0
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psrldq xmm0, 8
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pxor xmm7, xmm0
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;32b fold
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movdqa xmm0, xmm7
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pslldq xmm7, 4
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pclmulqdq xmm7, xmm10, 0x10
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pxor xmm7, xmm0
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;barrett reduction
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_barrett:
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pand xmm7, [mask2]
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movdqa xmm1, xmm7
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movdqa xmm2, xmm7
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movdqa xmm10, [rk7]
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pclmulqdq xmm7, xmm10, 0
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pxor xmm7, xmm2
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pand xmm7, [mask]
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movdqa xmm2, xmm7
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pclmulqdq xmm7, xmm10, 0x10
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pxor xmm7, xmm2
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pxor xmm7, xmm1
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pextrd eax, xmm7, 2
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_cleanup:
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; return c ^ 0xffffffffL;
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not eax
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%ifidn __OUTPUT_FORMAT__, win64
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movdqa xmm6, [rsp + XMM_SAVE + 16*0]
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movdqa xmm7, [rsp + XMM_SAVE + 16*1]
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movdqa xmm8, [rsp + XMM_SAVE + 16*2]
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movdqa xmm9, [rsp + XMM_SAVE + 16*3]
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movdqa xmm10, [rsp + XMM_SAVE + 16*4]
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movdqa xmm11, [rsp + XMM_SAVE + 16*5]
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movdqa xmm12, [rsp + XMM_SAVE + 16*6]
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movdqa xmm13, [rsp + XMM_SAVE + 16*7]
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%endif
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add rsp, VARIABLE_OFFSET
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ret
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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align 16
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_less_than_256:
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; check if there is enough buffer to be able to fold 16B at a time
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cmp arg3, 32
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jl _less_than_32
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; if there is, load the constants
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movdqa xmm10, [rk1] ; rk1 and rk2 in xmm10
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movd xmm0, arg1_low32 ; get the initial crc value
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movdqu xmm7, [arg2] ; load the plaintext
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pxor xmm7, xmm0
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; update the buffer pointer
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add arg2, 16
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; update the counter. subtract 32 instead of 16 to save one instruction from the loop
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sub arg3, 32
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jmp _16B_reduction_loop
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align 16
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_less_than_32:
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; mov initial crc to the return value. this is necessary for zero-length buffers.
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mov eax, arg1_low32
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test arg3, arg3
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je _cleanup
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movd xmm0, arg1_low32 ; get the initial crc value
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cmp arg3, 16
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je _exact_16_left
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jl _less_than_16_left
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movdqu xmm7, [arg2] ; load the plaintext
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pxor xmm7, xmm0 ; xor the initial crc value
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add arg2, 16
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sub arg3, 16
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movdqa xmm10, [rk1] ; rk1 and rk2 in xmm10
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jmp _get_last_two_xmms
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align 16
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_less_than_16_left:
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; use stack space to load data less than 16 bytes, zero-out the 16B in memory first.
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pxor xmm1, xmm1
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mov r11, rsp
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movdqa [r11], xmm1
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cmp arg3, 4
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jl _only_less_than_4
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; backup the counter value
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mov r9, arg3
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cmp arg3, 8
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jl _less_than_8_left
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; load 8 Bytes
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mov rax, [arg2]
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mov [r11], rax
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add r11, 8
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sub arg3, 8
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add arg2, 8
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_less_than_8_left:
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cmp arg3, 4
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jl _less_than_4_left
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; load 4 Bytes
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mov eax, [arg2]
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mov [r11], eax
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add r11, 4
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sub arg3, 4
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add arg2, 4
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_less_than_4_left:
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cmp arg3, 2
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jl _less_than_2_left
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; load 2 Bytes
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mov ax, [arg2]
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mov [r11], ax
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add r11, 2
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sub arg3, 2
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add arg2, 2
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_less_than_2_left:
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cmp arg3, 1
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jl _zero_left
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; load 1 Byte
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mov al, [arg2]
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mov [r11], al
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|
_zero_left:
|
|
movdqa xmm7, [rsp]
|
|
pxor xmm7, xmm0 ; xor the initial crc value
|
|
|
|
lea rax,[pshufb_shf_table]
|
|
movdqu xmm0, [rax + r9]
|
|
pshufb xmm7,xmm0
|
|
|
|
|
|
|
|
jmp _128_done
|
|
|
|
align 16
|
|
_exact_16_left:
|
|
movdqu xmm7, [arg2]
|
|
pxor xmm7, 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 xmm7, [rsp]
|
|
pxor xmm7, xmm0 ; xor the initial crc value
|
|
|
|
pslldq xmm7, 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 xmm7, [rsp]
|
|
pxor xmm7, xmm0 ; xor the initial crc value
|
|
|
|
pslldq xmm7, 6
|
|
|
|
jmp _barrett
|
|
_only_less_than_2:
|
|
|
|
; load 1 Byte
|
|
mov al, [arg2]
|
|
mov [r11], al
|
|
|
|
movdqa xmm7, [rsp]
|
|
pxor xmm7, xmm0 ; xor the initial crc value
|
|
|
|
pslldq xmm7, 7
|
|
|
|
jmp _barrett
|
|
|
|
section .data
|
|
|
|
; precomputed constants
|
|
align 16
|
|
rk1 :
|
|
DQ 0x00000000ccaa009e
|
|
rk2 :
|
|
DQ 0x00000001751997d0
|
|
rk3 :
|
|
DQ 0x000000014a7fe880
|
|
rk4 :
|
|
DQ 0x00000001e88ef372
|
|
rk5 :
|
|
DQ 0x00000000ccaa009e
|
|
rk6 :
|
|
DQ 0x0000000163cd6124
|
|
rk7 :
|
|
DQ 0x00000001f7011640
|
|
rk8 :
|
|
DQ 0x00000001db710640
|
|
rk9 :
|
|
DQ 0x00000001d7cfc6ac
|
|
rk10 :
|
|
DQ 0x00000001ea89367e
|
|
rk11 :
|
|
DQ 0x000000018cb44e58
|
|
rk12 :
|
|
DQ 0x00000000df068dc2
|
|
rk13 :
|
|
DQ 0x00000000ae0b5394
|
|
rk14 :
|
|
DQ 0x00000001c7569e54
|
|
rk15 :
|
|
DQ 0x00000001c6e41596
|
|
rk16 :
|
|
DQ 0x0000000154442bd4
|
|
rk17 :
|
|
DQ 0x0000000174359406
|
|
rk18 :
|
|
DQ 0x000000003db1ecdc
|
|
rk19 :
|
|
DQ 0x000000015a546366
|
|
rk20 :
|
|
DQ 0x00000000f1da05aa
|
|
|
|
mask:
|
|
dq 0xFFFFFFFFFFFFFFFF, 0x0000000000000000
|
|
mask2:
|
|
dq 0xFFFFFFFF00000000, 0xFFFFFFFFFFFFFFFF
|
|
mask3:
|
|
dq 0x8080808080808080, 0x8080808080808080
|
|
|
|
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
|