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C x86/md5-compress.asm
ifelse(<
Copyright (C) 2005, 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/.
>)
C Register usage
define(<SA>,<%eax>)
define(<SB>,<%ebx>)
define(<SC>,<%ecx>)
define(<SD>,<%edx>)
define(<TMP>,<%ebp>)
define(<INPUT>,<%esi>)
C %edi is unused
C F1(x,y,z) = (z ^ (x & (y ^ z)))
define(<F1>, <
movl $3, TMP
xorl $2, TMP
andl $1, TMP
xorl $3, TMP>)
define(<F2>,<F1($3, $1, $2)>)
C F3(x,y,z) = x ^ y ^ z
define(<F3>,<
movl $1, TMP
xorl $2, TMP
xorl $3, TMP>)
C F4(x,y,z) = y ^ (x | ~z)
define(<F4>,<
movl $3, TMP
notl TMP
orl $1, TMP
xorl $2, TMP>)
define(<REF>,<OFFSET($1)(INPUT)>)
C ROUND(f, w, x, y, z, k, data, s):
C w += f(x,y,z) + data + k
C w <<< s
C w += x
define(<ROUND>,<
addl $7, $2
$1($3, $4, $5)
addl $6, $2
addl TMP, $2
roll <$>$8, $2
addl $3, $2>)
.file "md5-compress.asm"
C nettle_md5_compress(uint32_t *state, uint8_t *data)
.text
ALIGN(16)
PROLOGUE(nettle_md5_compress)
C save all registers that need to be saved
C 24(%esp) input
C 20(%esp) state
C 16(%esp) Return address
pushl %ebx C 12(%esp)
pushl %ebp C 8(%esp)
pushl %esi C 4(%esp)
pushl %edi C (%esp)
C load the state vector
movl 20(%esp),TMP
movl (TMP), SA
movl 4(TMP), SB
movl 8(TMP), SC
movl 12(TMP), SD
C Pointer to source data.
C Note that if unaligned, we suffer unaligned accesses
movl 24(%esp), INPUT
ROUND(<F1>, SA, SB, SC, SD, REF( 0), $0xd76aa478, 7)
ROUND(<F1>, SD, SA, SB, SC, REF( 1), $0xe8c7b756, 12)
ROUND(<F1>, SC, SD, SA, SB, REF( 2), $0x242070db, 17)
ROUND(<F1>, SB, SC, SD, SA, REF( 3), $0xc1bdceee, 22)
ROUND(<F1>, SA, SB, SC, SD, REF( 4), $0xf57c0faf, 7)
ROUND(<F1>, SD, SA, SB, SC, REF( 5), $0x4787c62a, 12)
ROUND(<F1>, SC, SD, SA, SB, REF( 6), $0xa8304613, 17)
ROUND(<F1>, SB, SC, SD, SA, REF( 7), $0xfd469501, 22)
ROUND(<F1>, SA, SB, SC, SD, REF( 8), $0x698098d8, 7)
ROUND(<F1>, SD, SA, SB, SC, REF( 9), $0x8b44f7af, 12)
ROUND(<F1>, SC, SD, SA, SB, REF(10), $0xffff5bb1, 17)
ROUND(<F1>, SB, SC, SD, SA, REF(11), $0x895cd7be, 22)
ROUND(<F1>, SA, SB, SC, SD, REF(12), $0x6b901122, 7)
ROUND(<F1>, SD, SA, SB, SC, REF(13), $0xfd987193, 12)
ROUND(<F1>, SC, SD, SA, SB, REF(14), $0xa679438e, 17)
ROUND(<F1>, SB, SC, SD, SA, REF(15), $0x49b40821, 22)
ROUND(<F2>, SA, SB, SC, SD, REF( 1), $0xf61e2562, 5)
ROUND(<F2>, SD, SA, SB, SC, REF( 6), $0xc040b340, 9)
ROUND(<F2>, SC, SD, SA, SB, REF(11), $0x265e5a51, 14)
ROUND(<F2>, SB, SC, SD, SA, REF( 0), $0xe9b6c7aa, 20)
ROUND(<F2>, SA, SB, SC, SD, REF( 5), $0xd62f105d, 5)
ROUND(<F2>, SD, SA, SB, SC, REF(10), $0x02441453, 9)
ROUND(<F2>, SC, SD, SA, SB, REF(15), $0xd8a1e681, 14)
ROUND(<F2>, SB, SC, SD, SA, REF( 4), $0xe7d3fbc8, 20)
ROUND(<F2>, SA, SB, SC, SD, REF( 9), $0x21e1cde6, 5)
ROUND(<F2>, SD, SA, SB, SC, REF(14), $0xc33707d6, 9)
ROUND(<F2>, SC, SD, SA, SB, REF( 3), $0xf4d50d87, 14)
ROUND(<F2>, SB, SC, SD, SA, REF( 8), $0x455a14ed, 20)
ROUND(<F2>, SA, SB, SC, SD, REF(13), $0xa9e3e905, 5)
ROUND(<F2>, SD, SA, SB, SC, REF( 2), $0xfcefa3f8, 9)
ROUND(<F2>, SC, SD, SA, SB, REF( 7), $0x676f02d9, 14)
ROUND(<F2>, SB, SC, SD, SA, REF(12), $0x8d2a4c8a, 20)
ROUND(<F3>, SA, SB, SC, SD, REF( 5), $0xfffa3942, 4)
ROUND(<F3>, SD, SA, SB, SC, REF( 8), $0x8771f681, 11)
ROUND(<F3>, SC, SD, SA, SB, REF(11), $0x6d9d6122, 16)
ROUND(<F3>, SB, SC, SD, SA, REF(14), $0xfde5380c, 23)
ROUND(<F3>, SA, SB, SC, SD, REF( 1), $0xa4beea44, 4)
ROUND(<F3>, SD, SA, SB, SC, REF( 4), $0x4bdecfa9, 11)
ROUND(<F3>, SC, SD, SA, SB, REF( 7), $0xf6bb4b60, 16)
ROUND(<F3>, SB, SC, SD, SA, REF(10), $0xbebfbc70, 23)
ROUND(<F3>, SA, SB, SC, SD, REF(13), $0x289b7ec6, 4)
ROUND(<F3>, SD, SA, SB, SC, REF( 0), $0xeaa127fa, 11)
ROUND(<F3>, SC, SD, SA, SB, REF( 3), $0xd4ef3085, 16)
ROUND(<F3>, SB, SC, SD, SA, REF( 6), $0x04881d05, 23)
ROUND(<F3>, SA, SB, SC, SD, REF( 9), $0xd9d4d039, 4)
ROUND(<F3>, SD, SA, SB, SC, REF(12), $0xe6db99e5, 11)
ROUND(<F3>, SC, SD, SA, SB, REF(15), $0x1fa27cf8, 16)
ROUND(<F3>, SB, SC, SD, SA, REF( 2), $0xc4ac5665, 23)
ROUND(<F4>, SA, SB, SC, SD, REF( 0), $0xf4292244, 6)
ROUND(<F4>, SD, SA, SB, SC, REF( 7), $0x432aff97, 10)
ROUND(<F4>, SC, SD, SA, SB, REF(14), $0xab9423a7, 15)
ROUND(<F4>, SB, SC, SD, SA, REF( 5), $0xfc93a039, 21)
ROUND(<F4>, SA, SB, SC, SD, REF(12), $0x655b59c3, 6)
ROUND(<F4>, SD, SA, SB, SC, REF( 3), $0x8f0ccc92, 10)
ROUND(<F4>, SC, SD, SA, SB, REF(10), $0xffeff47d, 15)
ROUND(<F4>, SB, SC, SD, SA, REF( 1), $0x85845dd1, 21)
ROUND(<F4>, SA, SB, SC, SD, REF( 8), $0x6fa87e4f, 6)
ROUND(<F4>, SD, SA, SB, SC, REF(15), $0xfe2ce6e0, 10)
ROUND(<F4>, SC, SD, SA, SB, REF( 6), $0xa3014314, 15)
ROUND(<F4>, SB, SC, SD, SA, REF(13), $0x4e0811a1, 21)
ROUND(<F4>, SA, SB, SC, SD, REF( 4), $0xf7537e82, 6)
ROUND(<F4>, SD, SA, SB, SC, REF(11), $0xbd3af235, 10)
ROUND(<F4>, SC, SD, SA, SB, REF( 2), $0x2ad7d2bb, 15)
ROUND(<F4>, SB, SC, SD, SA, REF( 9), $0xeb86d391, 21)
C Update the state vector
movl 20(%esp),TMP
addl SA, (TMP)
addl SB, 4(TMP)
addl SC, 8(TMP)
addl SD, 12(TMP)
popl %edi
popl %esi
popl %ebp
popl %ebx
ret
EPILOGUE(nettle_md5_compress)
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