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cd888f01a4
To support Intel CET, all indirect branch targets must start with ENDBR32/ENDBR64. Here is a patch to define endbranch and add it to function entries in x86 assembly codes which are indirect branch targets as discovered by running testsuite on Intel CET machine and visual inspection. Verified with $ CC="gcc -Wl,-z,cet-report=error -fcf-protection" CXX="g++ -Wl,-z,cet-report=error -fcf-protection" .../configure x86_64-linux $ make -j8 $ make -j8 check with both nasm and yasm on both CET and non-CET machines. Change-Id: I9822578e7294fb5043a64ab7de5c41de81a7d337 Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
583 lines
15 KiB
NASM
583 lines
15 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; Copyright(c) 2011-2016 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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; Function API:
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; uint64_t crc64_iso_norm_by8(
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; uint64_t init_crc, //initial CRC value, 64 bits
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; const unsigned char *buf, //buffer pointer to calculate CRC on
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; uint64_t len //buffer length in bytes (64-bit data)
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; );
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;
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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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%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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%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 crc64_iso_norm_by8, function
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crc64_iso_norm_by8:
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endbranch
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not arg1 ;~init_crc
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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 256
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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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movq xmm10, arg1 ; initial crc
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; crc value does not need to be byte-reflected, but it needs to be moved to the high part of the register.
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; because data will be byte-reflected and will align with initial crc at correct place.
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pslldq xmm10, 8
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movdqa xmm11, [SHUF_MASK]
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; receive the initial 128B 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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pshufb xmm0, xmm11
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; XOR the initial_crc value
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pxor xmm0, xmm10
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pshufb xmm1, xmm11
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pshufb xmm2, xmm11
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pshufb xmm3, xmm11
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pshufb xmm4, xmm11
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pshufb xmm5, xmm11
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pshufb xmm6, xmm11
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pshufb xmm7, xmm11
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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 ; buf += 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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pshufb xmm9, xmm11
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pshufb xmm12, xmm11
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movdqa xmm8, xmm0
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movdqa xmm13, xmm1
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pclmulqdq xmm0, xmm10, 0x0
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pclmulqdq xmm8, xmm10 , 0x11
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pclmulqdq xmm1, xmm10, 0x0
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pclmulqdq xmm13, xmm10 , 0x11
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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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pshufb xmm9, xmm11
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pshufb xmm12, xmm11
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movdqa xmm8, xmm2
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movdqa xmm13, xmm3
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pclmulqdq xmm2, xmm10, 0x0
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pclmulqdq xmm8, xmm10 , 0x11
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pclmulqdq xmm3, xmm10, 0x0
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pclmulqdq xmm13, xmm10 , 0x11
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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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pshufb xmm9, xmm11
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pshufb xmm12, xmm11
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movdqa xmm8, xmm4
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movdqa xmm13, xmm5
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pclmulqdq xmm4, xmm10, 0x0
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pclmulqdq xmm8, xmm10 , 0x11
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pclmulqdq xmm5, xmm10, 0x0
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pclmulqdq xmm13, xmm10 , 0x11
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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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pshufb xmm9, xmm11
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pshufb xmm12, xmm11
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movdqa xmm8, xmm6
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movdqa xmm13, xmm7
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pclmulqdq xmm6, xmm10, 0x0
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pclmulqdq xmm8, xmm10 , 0x11
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pclmulqdq xmm7, xmm10, 0x0
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pclmulqdq xmm13, xmm10 , 0x11
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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, 0x11
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pclmulqdq xmm8, xmm10, 0x0
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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, 0x11
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pclmulqdq xmm8, xmm10, 0x0
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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, 0x11
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pclmulqdq xmm8, xmm10, 0x0
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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, 0x11
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pclmulqdq xmm8, xmm10, 0x0
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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, 0x11
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pclmulqdq xmm8, xmm10, 0x0
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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, 0x11
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pclmulqdq xmm8, xmm10, 0x0
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pxor xmm7, xmm8
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xorps xmm7, xmm5
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movdqa xmm10, [rk1] ;xmm10 has rk1 and rk2
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movdqa xmm8, xmm6
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pclmulqdq xmm6, xmm10, 0x11
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pclmulqdq xmm8, xmm10, 0x0
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pxor xmm7, xmm8
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pxor xmm7, xmm6
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; instead of 128, we add 112 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, 0x11
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pclmulqdq xmm8, xmm10, 0x0
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pxor xmm7, xmm8
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movdqu xmm0, [arg2]
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pshufb xmm0, xmm11
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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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; check if any more data to fold. If not, compute the CRC of the final 128 bits
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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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pshufb xmm1, xmm11
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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 + 16]
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sub rax, arg3
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movdqu xmm0, [rax]
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; shift xmm2 to the left by arg3 bytes
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pshufb xmm2, xmm0
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; shift xmm7 to the right by 16-arg3 bytes
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pxor xmm0, [mask1]
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pshufb xmm7, xmm0
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pblendvb xmm1, xmm2 ;xmm0 is implicit
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; fold 16 Bytes
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movdqa xmm2, xmm1
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movdqa xmm8, xmm7
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pclmulqdq xmm7, xmm10, 0x11
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pclmulqdq xmm8, xmm10, 0x0
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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] ; rk5 and rk6 in xmm10
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movdqa xmm0, xmm7
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;64b fold
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pclmulqdq xmm7, xmm10, 0x01 ; H*L
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pslldq xmm0, 8
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pxor xmm7, xmm0
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;barrett reduction
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_barrett:
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movdqa xmm10, [rk7] ; rk7 and rk8 in xmm10
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movdqa xmm0, xmm7
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movdqa xmm1, xmm7
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pand xmm1, [mask3]
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pclmulqdq xmm7, xmm10, 0x01
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pxor xmm7, xmm1
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pclmulqdq xmm7, xmm10, 0x11
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pxor xmm7, xmm0
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pextrq rax, xmm7, 0
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_cleanup:
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not rax
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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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movdqa xmm11, [SHUF_MASK]
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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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movq xmm0, arg1 ; get the initial crc value
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pslldq xmm0, 8 ; align it to its correct place
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movdqu xmm7, [arg2] ; load the plaintext
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pshufb xmm7, xmm11 ; byte-reflect 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 rax, arg1
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test arg3, arg3
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je _cleanup
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movdqa xmm11, [SHUF_MASK]
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movq xmm0, arg1 ; get the initial crc value
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pslldq xmm0, 8 ; align it to its correct place
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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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pshufb xmm7, xmm11 ; byte-reflect 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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; 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]
|
|
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 xmm7, [rsp]
|
|
pshufb xmm7, xmm11
|
|
pxor xmm7, xmm0 ; xor the initial crc value
|
|
|
|
; shl r9, 4
|
|
lea rax, [pshufb_shf_table + 16]
|
|
sub rax, r9
|
|
|
|
cmp r9, 8
|
|
jl _end_1to7
|
|
|
|
_end_8to15:
|
|
movdqu xmm0, [rax]
|
|
pxor xmm0, [mask1]
|
|
|
|
pshufb xmm7, xmm0
|
|
jmp _128_done
|
|
|
|
_end_1to7:
|
|
; Right shift (8-length) bytes in XMM
|
|
add rax, 8
|
|
movdqu xmm0, [rax]
|
|
pshufb xmm7,xmm0
|
|
|
|
jmp _barrett
|
|
align 16
|
|
_exact_16_left:
|
|
movdqu xmm7, [arg2]
|
|
pshufb xmm7, xmm11
|
|
pxor xmm7, xmm0 ; xor the initial crc value
|
|
|
|
jmp _128_done
|
|
|
|
section .data
|
|
|
|
; precomputed constants
|
|
align 16
|
|
|
|
rk1:
|
|
DQ 0x0000000000000145
|
|
rk2:
|
|
DQ 0x0000000000001db7
|
|
rk3:
|
|
DQ 0x000100000001001a
|
|
rk4:
|
|
DQ 0x001b0000001b015e
|
|
rk5:
|
|
DQ 0x0000000000000145
|
|
rk6:
|
|
DQ 0x0000000000000000
|
|
rk7:
|
|
DQ 0x000000000000001b
|
|
rk8:
|
|
DQ 0x000000000000001b
|
|
rk9:
|
|
DQ 0x0150145145145015
|
|
rk10:
|
|
DQ 0x1c71db6db6db71c7
|
|
rk11:
|
|
DQ 0x0001110110110111
|
|
rk12:
|
|
DQ 0x001aab1ab1ab1aab
|
|
rk13:
|
|
DQ 0x0000014445014445
|
|
rk14:
|
|
DQ 0x00001daab71daab7
|
|
rk15:
|
|
DQ 0x0000000101000101
|
|
rk16:
|
|
DQ 0x0000001b1b001b1b
|
|
rk17:
|
|
DQ 0x0000000001514515
|
|
rk18:
|
|
DQ 0x000000001c6db6c7
|
|
rk19:
|
|
DQ 0x0000000000011011
|
|
rk20:
|
|
DQ 0x00000000001ab1ab
|
|
|
|
mask1:
|
|
dq 0x8080808080808080, 0x8080808080808080
|
|
mask2:
|
|
dq 0xFFFFFFFFFFFFFFFF, 0x00000000FFFFFFFF
|
|
mask3:
|
|
dq 0x0000000000000000, 0xFFFFFFFFFFFFFFFF
|
|
|
|
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, 0x0f0e0d0c0b0a0908
|
|
dq 0x8080808080808080, 0x0f0e0d0c0b0a0908
|
|
dq 0x8080808080808080, 0x8080808080808080
|
|
|
|
;;; func core, ver, snum
|
|
slversion crc64_iso_norm_by8, 01, 00, 0020
|