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499 lines
17 KiB
499 lines
17 KiB
######################################################################## |
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# Implement fast SHA-256 with AVX1 instructions. (x86_64) |
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# |
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# Copyright (C) 2013 Intel Corporation. |
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# |
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# Authors: |
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# James Guilford <james.guilford@intel.com> |
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# Kirk Yap <kirk.s.yap@intel.com> |
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# Tim Chen <tim.c.chen@linux.intel.com> |
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# |
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# This software is available to you under a choice of one of two |
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# licenses. You may choose to be licensed under the terms of the GNU |
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# General Public License (GPL) Version 2, available from the file |
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# COPYING in the main directory of this source tree, or the |
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# OpenIB.org BSD license below: |
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# |
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# Redistribution and use in source and binary forms, with or |
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# without modification, are permitted provided that the following |
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# conditions are met: |
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# |
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# - Redistributions of source code must retain the above |
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# copyright notice, this list of conditions and the following |
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# disclaimer. |
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# |
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# - Redistributions in binary form must reproduce the above |
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# copyright notice, this list of conditions and the following |
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# disclaimer in the documentation and/or other materials |
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# provided with the distribution. |
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# |
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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# SOFTWARE. |
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######################################################################## |
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# |
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# This code is described in an Intel White-Paper: |
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# "Fast SHA-256 Implementations on Intel Architecture Processors" |
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# |
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# To find it, surf to http://www.intel.com/p/en_US/embedded |
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# and search for that title. |
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# |
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######################################################################## |
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# This code schedules 1 block at a time, with 4 lanes per block |
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######################################################################## |
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#include <linux/linkage.h> |
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## assume buffers not aligned |
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#define VMOVDQ vmovdqu |
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################################ Define Macros |
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# addm [mem], reg |
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# Add reg to mem using reg-mem add and store |
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.macro addm p1 p2 |
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add \p1, \p2 |
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mov \p2, \p1 |
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.endm |
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.macro MY_ROR p1 p2 |
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shld $(32-(\p1)), \p2, \p2 |
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.endm |
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################################ |
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# COPY_XMM_AND_BSWAP xmm, [mem], byte_flip_mask |
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# Load xmm with mem and byte swap each dword |
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.macro COPY_XMM_AND_BSWAP p1 p2 p3 |
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VMOVDQ \p2, \p1 |
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vpshufb \p3, \p1, \p1 |
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.endm |
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################################ |
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X0 = %xmm4 |
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X1 = %xmm5 |
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X2 = %xmm6 |
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X3 = %xmm7 |
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XTMP0 = %xmm0 |
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XTMP1 = %xmm1 |
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XTMP2 = %xmm2 |
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XTMP3 = %xmm3 |
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XTMP4 = %xmm8 |
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XFER = %xmm9 |
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XTMP5 = %xmm11 |
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SHUF_00BA = %xmm10 # shuffle xBxA -> 00BA |
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SHUF_DC00 = %xmm12 # shuffle xDxC -> DC00 |
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BYTE_FLIP_MASK = %xmm13 |
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NUM_BLKS = %rdx # 3rd arg |
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INP = %rsi # 2nd arg |
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CTX = %rdi # 1st arg |
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SRND = %rsi # clobbers INP |
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c = %ecx |
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d = %r8d |
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e = %edx |
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TBL = %r12 |
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a = %eax |
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b = %ebx |
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f = %r9d |
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g = %r10d |
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h = %r11d |
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y0 = %r13d |
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y1 = %r14d |
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y2 = %r15d |
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_INP_END_SIZE = 8 |
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_INP_SIZE = 8 |
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_XFER_SIZE = 16 |
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_XMM_SAVE_SIZE = 0 |
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_INP_END = 0 |
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_INP = _INP_END + _INP_END_SIZE |
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_XFER = _INP + _INP_SIZE |
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_XMM_SAVE = _XFER + _XFER_SIZE |
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STACK_SIZE = _XMM_SAVE + _XMM_SAVE_SIZE |
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# rotate_Xs |
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# Rotate values of symbols X0...X3 |
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.macro rotate_Xs |
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X_ = X0 |
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X0 = X1 |
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X1 = X2 |
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X2 = X3 |
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X3 = X_ |
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.endm |
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# ROTATE_ARGS |
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# Rotate values of symbols a...h |
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.macro ROTATE_ARGS |
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TMP_ = h |
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h = g |
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g = f |
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f = e |
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e = d |
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d = c |
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c = b |
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b = a |
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a = TMP_ |
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.endm |
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.macro FOUR_ROUNDS_AND_SCHED |
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## compute s0 four at a time and s1 two at a time |
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## compute W[-16] + W[-7] 4 at a time |
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mov e, y0 # y0 = e |
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MY_ROR (25-11), y0 # y0 = e >> (25-11) |
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mov a, y1 # y1 = a |
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vpalignr $4, X2, X3, XTMP0 # XTMP0 = W[-7] |
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MY_ROR (22-13), y1 # y1 = a >> (22-13) |
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xor e, y0 # y0 = e ^ (e >> (25-11)) |
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mov f, y2 # y2 = f |
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MY_ROR (11-6), y0 # y0 = (e >> (11-6)) ^ (e >> (25-6)) |
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xor a, y1 # y1 = a ^ (a >> (22-13) |
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xor g, y2 # y2 = f^g |
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vpaddd X0, XTMP0, XTMP0 # XTMP0 = W[-7] + W[-16] |
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xor e, y0 # y0 = e ^ (e >> (11-6)) ^ (e >> (25-6)) |
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and e, y2 # y2 = (f^g)&e |
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MY_ROR (13-2), y1 # y1 = (a >> (13-2)) ^ (a >> (22-2)) |
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## compute s0 |
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vpalignr $4, X0, X1, XTMP1 # XTMP1 = W[-15] |
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xor a, y1 # y1 = a ^ (a >> (13-2)) ^ (a >> (22-2)) |
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MY_ROR 6, y0 # y0 = S1 = (e>>6) & (e>>11) ^ (e>>25) |
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xor g, y2 # y2 = CH = ((f^g)&e)^g |
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MY_ROR 2, y1 # y1 = S0 = (a>>2) ^ (a>>13) ^ (a>>22) |
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add y0, y2 # y2 = S1 + CH |
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add _XFER(%rsp), y2 # y2 = k + w + S1 + CH |
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mov a, y0 # y0 = a |
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add y2, h # h = h + S1 + CH + k + w |
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mov a, y2 # y2 = a |
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vpsrld $7, XTMP1, XTMP2 |
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or c, y0 # y0 = a|c |
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add h, d # d = d + h + S1 + CH + k + w |
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and c, y2 # y2 = a&c |
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vpslld $(32-7), XTMP1, XTMP3 |
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and b, y0 # y0 = (a|c)&b |
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add y1, h # h = h + S1 + CH + k + w + S0 |
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vpor XTMP2, XTMP3, XTMP3 # XTMP1 = W[-15] MY_ROR 7 |
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or y2, y0 # y0 = MAJ = (a|c)&b)|(a&c) |
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add y0, h # h = h + S1 + CH + k + w + S0 + MAJ |
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ROTATE_ARGS |
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mov e, y0 # y0 = e |
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mov a, y1 # y1 = a |
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MY_ROR (25-11), y0 # y0 = e >> (25-11) |
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xor e, y0 # y0 = e ^ (e >> (25-11)) |
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mov f, y2 # y2 = f |
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MY_ROR (22-13), y1 # y1 = a >> (22-13) |
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vpsrld $18, XTMP1, XTMP2 # |
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xor a, y1 # y1 = a ^ (a >> (22-13) |
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MY_ROR (11-6), y0 # y0 = (e >> (11-6)) ^ (e >> (25-6)) |
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xor g, y2 # y2 = f^g |
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vpsrld $3, XTMP1, XTMP4 # XTMP4 = W[-15] >> 3 |
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MY_ROR (13-2), y1 # y1 = (a >> (13-2)) ^ (a >> (22-2)) |
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xor e, y0 # y0 = e ^ (e >> (11-6)) ^ (e >> (25-6)) |
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and e, y2 # y2 = (f^g)&e |
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MY_ROR 6, y0 # y0 = S1 = (e>>6) & (e>>11) ^ (e>>25) |
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vpslld $(32-18), XTMP1, XTMP1 |
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xor a, y1 # y1 = a ^ (a >> (13-2)) ^ (a >> (22-2)) |
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xor g, y2 # y2 = CH = ((f^g)&e)^g |
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vpxor XTMP1, XTMP3, XTMP3 # |
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add y0, y2 # y2 = S1 + CH |
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add (1*4 + _XFER)(%rsp), y2 # y2 = k + w + S1 + CH |
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MY_ROR 2, y1 # y1 = S0 = (a>>2) ^ (a>>13) ^ (a>>22) |
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vpxor XTMP2, XTMP3, XTMP3 # XTMP1 = W[-15] MY_ROR 7 ^ W[-15] MY_ROR |
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mov a, y0 # y0 = a |
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add y2, h # h = h + S1 + CH + k + w |
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mov a, y2 # y2 = a |
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vpxor XTMP4, XTMP3, XTMP1 # XTMP1 = s0 |
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or c, y0 # y0 = a|c |
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add h, d # d = d + h + S1 + CH + k + w |
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and c, y2 # y2 = a&c |
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## compute low s1 |
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vpshufd $0b11111010, X3, XTMP2 # XTMP2 = W[-2] {BBAA} |
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and b, y0 # y0 = (a|c)&b |
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add y1, h # h = h + S1 + CH + k + w + S0 |
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vpaddd XTMP1, XTMP0, XTMP0 # XTMP0 = W[-16] + W[-7] + s0 |
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or y2, y0 # y0 = MAJ = (a|c)&b)|(a&c) |
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add y0, h # h = h + S1 + CH + k + w + S0 + MAJ |
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ROTATE_ARGS |
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mov e, y0 # y0 = e |
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mov a, y1 # y1 = a |
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MY_ROR (25-11), y0 # y0 = e >> (25-11) |
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xor e, y0 # y0 = e ^ (e >> (25-11)) |
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MY_ROR (22-13), y1 # y1 = a >> (22-13) |
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mov f, y2 # y2 = f |
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xor a, y1 # y1 = a ^ (a >> (22-13) |
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MY_ROR (11-6), y0 # y0 = (e >> (11-6)) ^ (e >> (25-6)) |
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vpsrld $10, XTMP2, XTMP4 # XTMP4 = W[-2] >> 10 {BBAA} |
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xor g, y2 # y2 = f^g |
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vpsrlq $19, XTMP2, XTMP3 # XTMP3 = W[-2] MY_ROR 19 {xBxA} |
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xor e, y0 # y0 = e ^ (e >> (11-6)) ^ (e >> (25-6)) |
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and e, y2 # y2 = (f^g)&e |
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vpsrlq $17, XTMP2, XTMP2 # XTMP2 = W[-2] MY_ROR 17 {xBxA} |
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MY_ROR (13-2), y1 # y1 = (a >> (13-2)) ^ (a >> (22-2)) |
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xor a, y1 # y1 = a ^ (a >> (13-2)) ^ (a >> (22-2)) |
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xor g, y2 # y2 = CH = ((f^g)&e)^g |
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MY_ROR 6, y0 # y0 = S1 = (e>>6) & (e>>11) ^ (e>>25) |
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vpxor XTMP3, XTMP2, XTMP2 # |
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add y0, y2 # y2 = S1 + CH |
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MY_ROR 2, y1 # y1 = S0 = (a>>2) ^ (a>>13) ^ (a>>22) |
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add (2*4 + _XFER)(%rsp), y2 # y2 = k + w + S1 + CH |
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vpxor XTMP2, XTMP4, XTMP4 # XTMP4 = s1 {xBxA} |
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mov a, y0 # y0 = a |
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add y2, h # h = h + S1 + CH + k + w |
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mov a, y2 # y2 = a |
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vpshufb SHUF_00BA, XTMP4, XTMP4 # XTMP4 = s1 {00BA} |
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or c, y0 # y0 = a|c |
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add h, d # d = d + h + S1 + CH + k + w |
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and c, y2 # y2 = a&c |
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vpaddd XTMP4, XTMP0, XTMP0 # XTMP0 = {..., ..., W[1], W[0]} |
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and b, y0 # y0 = (a|c)&b |
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add y1, h # h = h + S1 + CH + k + w + S0 |
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## compute high s1 |
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vpshufd $0b01010000, XTMP0, XTMP2 # XTMP2 = W[-2] {DDCC} |
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or y2, y0 # y0 = MAJ = (a|c)&b)|(a&c) |
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add y0, h # h = h + S1 + CH + k + w + S0 + MAJ |
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ROTATE_ARGS |
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mov e, y0 # y0 = e |
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MY_ROR (25-11), y0 # y0 = e >> (25-11) |
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mov a, y1 # y1 = a |
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MY_ROR (22-13), y1 # y1 = a >> (22-13) |
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xor e, y0 # y0 = e ^ (e >> (25-11)) |
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mov f, y2 # y2 = f |
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MY_ROR (11-6), y0 # y0 = (e >> (11-6)) ^ (e >> (25-6)) |
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vpsrld $10, XTMP2, XTMP5 # XTMP5 = W[-2] >> 10 {DDCC} |
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xor a, y1 # y1 = a ^ (a >> (22-13) |
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xor g, y2 # y2 = f^g |
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vpsrlq $19, XTMP2, XTMP3 # XTMP3 = W[-2] MY_ROR 19 {xDxC} |
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xor e, y0 # y0 = e ^ (e >> (11-6)) ^ (e >> (25-6)) |
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and e, y2 # y2 = (f^g)&e |
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MY_ROR (13-2), y1 # y1 = (a >> (13-2)) ^ (a >> (22-2)) |
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vpsrlq $17, XTMP2, XTMP2 # XTMP2 = W[-2] MY_ROR 17 {xDxC} |
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xor a, y1 # y1 = a ^ (a >> (13-2)) ^ (a >> (22-2)) |
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MY_ROR 6, y0 # y0 = S1 = (e>>6) & (e>>11) ^ (e>>25) |
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xor g, y2 # y2 = CH = ((f^g)&e)^g |
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vpxor XTMP3, XTMP2, XTMP2 |
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MY_ROR 2, y1 # y1 = S0 = (a>>2) ^ (a>>13) ^ (a>>22) |
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add y0, y2 # y2 = S1 + CH |
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add (3*4 + _XFER)(%rsp), y2 # y2 = k + w + S1 + CH |
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vpxor XTMP2, XTMP5, XTMP5 # XTMP5 = s1 {xDxC} |
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mov a, y0 # y0 = a |
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add y2, h # h = h + S1 + CH + k + w |
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mov a, y2 # y2 = a |
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vpshufb SHUF_DC00, XTMP5, XTMP5 # XTMP5 = s1 {DC00} |
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or c, y0 # y0 = a|c |
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add h, d # d = d + h + S1 + CH + k + w |
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and c, y2 # y2 = a&c |
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vpaddd XTMP0, XTMP5, X0 # X0 = {W[3], W[2], W[1], W[0]} |
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and b, y0 # y0 = (a|c)&b |
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add y1, h # h = h + S1 + CH + k + w + S0 |
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or y2, y0 # y0 = MAJ = (a|c)&b)|(a&c) |
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add y0, h # h = h + S1 + CH + k + w + S0 + MAJ |
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ROTATE_ARGS |
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rotate_Xs |
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.endm |
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## input is [rsp + _XFER + %1 * 4] |
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.macro DO_ROUND round |
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mov e, y0 # y0 = e |
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MY_ROR (25-11), y0 # y0 = e >> (25-11) |
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mov a, y1 # y1 = a |
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xor e, y0 # y0 = e ^ (e >> (25-11)) |
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MY_ROR (22-13), y1 # y1 = a >> (22-13) |
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mov f, y2 # y2 = f |
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xor a, y1 # y1 = a ^ (a >> (22-13) |
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MY_ROR (11-6), y0 # y0 = (e >> (11-6)) ^ (e >> (25-6)) |
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xor g, y2 # y2 = f^g |
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xor e, y0 # y0 = e ^ (e >> (11-6)) ^ (e >> (25-6)) |
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MY_ROR (13-2), y1 # y1 = (a >> (13-2)) ^ (a >> (22-2)) |
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and e, y2 # y2 = (f^g)&e |
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xor a, y1 # y1 = a ^ (a >> (13-2)) ^ (a >> (22-2)) |
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MY_ROR 6, y0 # y0 = S1 = (e>>6) & (e>>11) ^ (e>>25) |
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xor g, y2 # y2 = CH = ((f^g)&e)^g |
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add y0, y2 # y2 = S1 + CH |
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MY_ROR 2, y1 # y1 = S0 = (a>>2) ^ (a>>13) ^ (a>>22) |
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offset = \round * 4 + _XFER # |
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add offset(%rsp), y2 # y2 = k + w + S1 + CH |
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mov a, y0 # y0 = a |
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add y2, h # h = h + S1 + CH + k + w |
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mov a, y2 # y2 = a |
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or c, y0 # y0 = a|c |
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add h, d # d = d + h + S1 + CH + k + w |
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and c, y2 # y2 = a&c |
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and b, y0 # y0 = (a|c)&b |
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add y1, h # h = h + S1 + CH + k + w + S0 |
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or y2, y0 # y0 = MAJ = (a|c)&b)|(a&c) |
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add y0, h # h = h + S1 + CH + k + w + S0 + MAJ |
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ROTATE_ARGS |
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.endm |
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######################################################################## |
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## void sha256_transform_avx(state sha256_state *state, const u8 *data, int blocks) |
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## arg 1 : pointer to state |
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## arg 2 : pointer to input data |
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## arg 3 : Num blocks |
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######################################################################## |
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.text |
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SYM_FUNC_START(sha256_transform_avx) |
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.align 32 |
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pushq %rbx |
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pushq %r12 |
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pushq %r13 |
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pushq %r14 |
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pushq %r15 |
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pushq %rbp |
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movq %rsp, %rbp |
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subq $STACK_SIZE, %rsp # allocate stack space |
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and $~15, %rsp # align stack pointer |
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shl $6, NUM_BLKS # convert to bytes |
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jz done_hash |
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add INP, NUM_BLKS # pointer to end of data |
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mov NUM_BLKS, _INP_END(%rsp) |
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## load initial digest |
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mov 4*0(CTX), a |
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mov 4*1(CTX), b |
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mov 4*2(CTX), c |
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mov 4*3(CTX), d |
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mov 4*4(CTX), e |
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mov 4*5(CTX), f |
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mov 4*6(CTX), g |
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mov 4*7(CTX), h |
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vmovdqa PSHUFFLE_BYTE_FLIP_MASK(%rip), BYTE_FLIP_MASK |
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vmovdqa _SHUF_00BA(%rip), SHUF_00BA |
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vmovdqa _SHUF_DC00(%rip), SHUF_DC00 |
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loop0: |
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lea K256(%rip), TBL |
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## byte swap first 16 dwords |
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COPY_XMM_AND_BSWAP X0, 0*16(INP), BYTE_FLIP_MASK |
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COPY_XMM_AND_BSWAP X1, 1*16(INP), BYTE_FLIP_MASK |
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COPY_XMM_AND_BSWAP X2, 2*16(INP), BYTE_FLIP_MASK |
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COPY_XMM_AND_BSWAP X3, 3*16(INP), BYTE_FLIP_MASK |
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mov INP, _INP(%rsp) |
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## schedule 48 input dwords, by doing 3 rounds of 16 each |
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mov $3, SRND |
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.align 16 |
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loop1: |
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vpaddd (TBL), X0, XFER |
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vmovdqa XFER, _XFER(%rsp) |
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FOUR_ROUNDS_AND_SCHED |
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vpaddd 1*16(TBL), X0, XFER |
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vmovdqa XFER, _XFER(%rsp) |
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FOUR_ROUNDS_AND_SCHED |
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vpaddd 2*16(TBL), X0, XFER |
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vmovdqa XFER, _XFER(%rsp) |
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FOUR_ROUNDS_AND_SCHED |
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vpaddd 3*16(TBL), X0, XFER |
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vmovdqa XFER, _XFER(%rsp) |
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add $4*16, TBL |
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FOUR_ROUNDS_AND_SCHED |
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sub $1, SRND |
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jne loop1 |
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mov $2, SRND |
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loop2: |
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vpaddd (TBL), X0, XFER |
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vmovdqa XFER, _XFER(%rsp) |
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DO_ROUND 0 |
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DO_ROUND 1 |
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DO_ROUND 2 |
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DO_ROUND 3 |
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vpaddd 1*16(TBL), X1, XFER |
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vmovdqa XFER, _XFER(%rsp) |
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add $2*16, TBL |
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DO_ROUND 0 |
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DO_ROUND 1 |
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DO_ROUND 2 |
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DO_ROUND 3 |
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vmovdqa X2, X0 |
|
vmovdqa X3, X1 |
|
|
|
sub $1, SRND |
|
jne loop2 |
|
|
|
addm (4*0)(CTX),a |
|
addm (4*1)(CTX),b |
|
addm (4*2)(CTX),c |
|
addm (4*3)(CTX),d |
|
addm (4*4)(CTX),e |
|
addm (4*5)(CTX),f |
|
addm (4*6)(CTX),g |
|
addm (4*7)(CTX),h |
|
|
|
mov _INP(%rsp), INP |
|
add $64, INP |
|
cmp _INP_END(%rsp), INP |
|
jne loop0 |
|
|
|
done_hash: |
|
|
|
mov %rbp, %rsp |
|
popq %rbp |
|
popq %r15 |
|
popq %r14 |
|
popq %r13 |
|
popq %r12 |
|
popq %rbx |
|
ret |
|
SYM_FUNC_END(sha256_transform_avx) |
|
|
|
.section .rodata.cst256.K256, "aM", @progbits, 256 |
|
.align 64 |
|
K256: |
|
.long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5 |
|
.long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5 |
|
.long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3 |
|
.long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174 |
|
.long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc |
|
.long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da |
|
.long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7 |
|
.long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967 |
|
.long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13 |
|
.long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85 |
|
.long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3 |
|
.long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070 |
|
.long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5 |
|
.long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3 |
|
.long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208 |
|
.long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2 |
|
|
|
.section .rodata.cst16.PSHUFFLE_BYTE_FLIP_MASK, "aM", @progbits, 16 |
|
.align 16 |
|
PSHUFFLE_BYTE_FLIP_MASK: |
|
.octa 0x0c0d0e0f08090a0b0405060700010203 |
|
|
|
.section .rodata.cst16._SHUF_00BA, "aM", @progbits, 16 |
|
.align 16 |
|
# shuffle xBxA -> 00BA |
|
_SHUF_00BA: |
|
.octa 0xFFFFFFFFFFFFFFFF0b0a090803020100 |
|
|
|
.section .rodata.cst16._SHUF_DC00, "aM", @progbits, 16 |
|
.align 16 |
|
# shuffle xDxC -> DC00 |
|
_SHUF_DC00: |
|
.octa 0x0b0a090803020100FFFFFFFFFFFFFFFF
|
|
|