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C x86_64/sha512-compress.asm
ifelse(`
Copyright (C) 2013 Niels Möller
This file is part of GNU Nettle.
GNU Nettle is free software: you can redistribute it and/or
modify it under the terms of either:
* the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your
option) any later version.
or
* the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version.
or both in parallel, as here.
GNU Nettle is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received copies of the GNU General Public License and
the GNU Lesser General Public License along with this program. If
not, see http://www.gnu.org/licenses/.
')
.file "sha512-compress.asm"
define(`STATE', `%rdi')
define(`INPUT', `%rsi')
define(`K', `%rdx')
define(`SA', `%rax')
define(`SB', `%rbx')
define(`SC', `%rcx')
define(`SD', `%r8')
define(`SE', `%r9')
define(`SF', `%r10')
define(`SG', `%r11')
define(`SH', `%r12')
define(`T0', `%r13')
define(`T1', `%rdi') C Overlap STATE
define(`COUNT', `%r14')
define(`W', `%r15')
define(`EXPN', `
mov OFFSET64($1)(%rsp), W
mov OFFSET64(eval(($1 + 14) % 16))(%rsp), T0
mov T0, T1
shr `$'6, T0
rol `$'3, T1
xor T1, T0
rol `$'42, T1
xor T1, T0
add T0, W
mov OFFSET64(eval(($1 + 1) % 16))(%rsp), T0
mov T0, T1
shr `$'7, T0
rol `$'56, T1
xor T1, T0
rol `$'7, T1
xor T1, T0
add T0, W
add OFFSET64(eval(($1 + 9) % 16))(%rsp), W
mov W, OFFSET64($1)(%rsp)
')
C ROUND(A,B,C,D,E,F,G,H,K)
C
C H += S1(E) + Choice(E,F,G) + K + W
C D += H
C H += S0(A) + Majority(A,B,C)
C
C Where
C
C S1(E) = E<<<50 ^ E<<<46 ^ E<<<23
C S0(A) = A<<<36 ^ A<<<30 ^ A<<<25
C Choice (E, F, G) = G^(E&(F^G))
C Majority (A,B,C) = (A&B) + (C&(A^B))
define(`ROUND', `
mov $5, T0
mov $5, T1
rol `$'23, T0
rol `$'46, T1
xor T0, T1
rol `$'27, T0
xor T0, T1
add W, $8
add T1, $8
mov $7, T0
xor $6, T0
and $5, T0
xor $7, T0
add OFFSET64($9)(K,COUNT,8), $8
add T0, $8
add $8, $4
mov $1, T0
mov $1, T1
rol `$'25, T0
rol `$'30, T1
xor T0, T1
rol `$'11, T0
xor T0, T1
add T1, $8
mov $1, T0
mov $1, T1
and $2, T0
xor $2, T1
add T0, $8
and $3, T1
add T1, $8
')
define(`NOEXPN', `
mov OFFSET64($1)(INPUT, COUNT, 8), W
bswap W
mov W, OFFSET64($1)(%rsp, COUNT, 8)
')
C void
C _nettle_sha512_compress(uint64_t *state, const uint8_t *input, const uint64_t *k)
.text
ALIGN(16)
PROLOGUE(_nettle_sha512_compress)
W64_ENTRY(3, 0)
sub $184, %rsp
mov %rbx, 128(%rsp)
mov STATE, 136(%rsp) C Save state, to free a register
mov %rbp, 144(%rsp)
mov %r12, 152(%rsp)
mov %r13, 160(%rsp)
mov %r14, 168(%rsp)
mov %r15, 176(%rsp)
mov (STATE), SA
mov 8(STATE), SB
mov 16(STATE), SC
mov 24(STATE), SD
mov 32(STATE), SE
mov 40(STATE), SF
mov 48(STATE), SG
mov 56(STATE), SH
xor COUNT, COUNT
ALIGN(16)
.Loop1:
NOEXPN(0) ROUND(SA,SB,SC,SD,SE,SF,SG,SH,0)
NOEXPN(1) ROUND(SH,SA,SB,SC,SD,SE,SF,SG,1)
NOEXPN(2) ROUND(SG,SH,SA,SB,SC,SD,SE,SF,2)
NOEXPN(3) ROUND(SF,SG,SH,SA,SB,SC,SD,SE,3)
NOEXPN(4) ROUND(SE,SF,SG,SH,SA,SB,SC,SD,4)
NOEXPN(5) ROUND(SD,SE,SF,SG,SH,SA,SB,SC,5)
NOEXPN(6) ROUND(SC,SD,SE,SF,SG,SH,SA,SB,6)
NOEXPN(7) ROUND(SB,SC,SD,SE,SF,SG,SH,SA,7)
add $8, COUNT
cmp $16, COUNT
jne .Loop1
.Loop2:
EXPN( 0) ROUND(SA,SB,SC,SD,SE,SF,SG,SH,0)
EXPN( 1) ROUND(SH,SA,SB,SC,SD,SE,SF,SG,1)
EXPN( 2) ROUND(SG,SH,SA,SB,SC,SD,SE,SF,2)
EXPN( 3) ROUND(SF,SG,SH,SA,SB,SC,SD,SE,3)
EXPN( 4) ROUND(SE,SF,SG,SH,SA,SB,SC,SD,4)
EXPN( 5) ROUND(SD,SE,SF,SG,SH,SA,SB,SC,5)
EXPN( 6) ROUND(SC,SD,SE,SF,SG,SH,SA,SB,6)
EXPN( 7) ROUND(SB,SC,SD,SE,SF,SG,SH,SA,7)
EXPN( 8) ROUND(SA,SB,SC,SD,SE,SF,SG,SH,8)
EXPN( 9) ROUND(SH,SA,SB,SC,SD,SE,SF,SG,9)
EXPN(10) ROUND(SG,SH,SA,SB,SC,SD,SE,SF,10)
EXPN(11) ROUND(SF,SG,SH,SA,SB,SC,SD,SE,11)
EXPN(12) ROUND(SE,SF,SG,SH,SA,SB,SC,SD,12)
EXPN(13) ROUND(SD,SE,SF,SG,SH,SA,SB,SC,13)
EXPN(14) ROUND(SC,SD,SE,SF,SG,SH,SA,SB,14)
EXPN(15) ROUND(SB,SC,SD,SE,SF,SG,SH,SA,15)
add $16, COUNT
cmp $80, COUNT
jne .Loop2
mov 136(%rsp), STATE
add SA, (STATE)
add SB, 8(STATE)
add SC, 16(STATE)
add SD, 24(STATE)
add SE, 32(STATE)
add SF, 40(STATE)
add SG, 48(STATE)
add SH, 56(STATE)
mov 128(%rsp), %rbx
mov 144(%rsp), %rbp
mov 152(%rsp), %r12
mov 160(%rsp), %r13
mov 168(%rsp),%r14
mov 176(%rsp),%r15
add $184, %rsp
W64_EXIT(3, 0)
ret
EPILOGUE(_nettle_sha512_compress)
|
