release/src/router/nettle/x86/md5-compress.asm

   1 C nettle, low-level cryptographics library
   2 C
   3 C Copyright (C) 2005, Niels Möller
   4 C
   5 C The nettle library is free software; you can redistribute it and/or modify
   6 C it under the terms of the GNU Lesser General Public License as published by
   7 C the Free Software Foundation; either version 2.1 of the License, or (at your
   8 C option) any later version.
   9 C
  10 C The nettle library is distributed in the hope that it will be useful, but
  11 C WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12 C or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  13 C License for more details.
  14 C
  15 C You should have received a copy of the GNU Lesser General Public License
  16 C along with the nettle library; see the file COPYING.LIB.  If not, write to
  17 C the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  18 C MA 02111-1301, USA.
  19
  20 C Register usage
  21 define(<SA>,<%eax>)
  22 define(<SB>,<%ebx>)
  23 define(<SC>,<%ecx>)
  24 define(<SD>,<%edx>)
  25 define(<TMP>,<%ebp>)
  26 define(<INPUT>,<%esi>)
  27
  28 C %edi is unused
  29
  30 C F1(x,y,z) = (z ^ (x & (y ^ z)))
  31 define(<F1>, <
  32         movl    $3, TMP
  33         xorl    $2, TMP
  34         andl    $1, TMP
  35         xorl    $3, TMP>)
  36
  37 define(<F2>,<F1($3, $1, $2)>)
  38
  39 C F3(x,y,z) = x ^ y ^ z
  40 define(<F3>,<
  41         movl    $1, TMP
  42         xorl    $2, TMP
  43         xorl    $3, TMP>)
  44
  45 C F4(x,y,z) = y ^ (x | ~z)
  46 define(<F4>,<
  47         movl    $3, TMP
  48         notl    TMP
  49         orl     $1, TMP
  50         xorl    $2, TMP>)
  51
  52 define(<REF>,<OFFSET($1)(INPUT)>)
  53
  54 C ROUND(f, w, x, y, z, k, data, s):
  55 C       w += f(x,y,z) + data + k
  56 C       w <<< s
  57 C       w += x
  58 define(<ROUND>,<
  59         addl    $7, $2
  60         $1($3, $4, $5)
  61         addl    $6, $2
  62         addl    TMP, $2
  63         roll    <$>$8, $2
  64         addl    $3, $2>)
  65
  66         .file "md5-compress.asm"
  67
  68         C _nettle_md5_compress(uint32_t *state, uint8_t *data)
  69
  70         .text
  71         ALIGN(16)
  72 PROLOGUE(_nettle_md5_compress)
  73         C save all registers that need to be saved
  74
  75                                 C  24(%esp)  input
  76                                 C  20(%esp)  state
  77                                 C  16(%esp)  Return address
  78         pushl   %ebx            C  12(%esp)
  79         pushl   %ebp            C   8(%esp)
  80         pushl   %esi            C   4(%esp)
  81         pushl   %edi            C    (%esp)
  82
  83         C load the state vector
  84         movl    20(%esp),TMP
  85         movl    (TMP),   SA
  86         movl    4(TMP),  SB
  87         movl    8(TMP),  SC
  88         movl    12(TMP), SD
  89
  90         C Pointer to source data.
  91         C Note that if unaligned, we suffer unaligned accesses
  92         movl    24(%esp), INPUT
  93
  94         ROUND(<F1>, SA, SB, SC, SD, REF( 0), $0xd76aa478, 7)
  95         ROUND(<F1>, SD, SA, SB, SC, REF( 1), $0xe8c7b756, 12)
  96         ROUND(<F1>, SC, SD, SA, SB, REF( 2), $0x242070db, 17)
  97         ROUND(<F1>, SB, SC, SD, SA, REF( 3), $0xc1bdceee, 22)
  98         ROUND(<F1>, SA, SB, SC, SD, REF( 4), $0xf57c0faf, 7)
  99         ROUND(<F1>, SD, SA, SB, SC, REF( 5), $0x4787c62a, 12)
 100         ROUND(<F1>, SC, SD, SA, SB, REF( 6), $0xa8304613, 17)
 101         ROUND(<F1>, SB, SC, SD, SA, REF( 7), $0xfd469501, 22)
 102         ROUND(<F1>, SA, SB, SC, SD, REF( 8), $0x698098d8, 7)
 103         ROUND(<F1>, SD, SA, SB, SC, REF( 9), $0x8b44f7af, 12)
 104         ROUND(<F1>, SC, SD, SA, SB, REF(10), $0xffff5bb1, 17)
 105         ROUND(<F1>, SB, SC, SD, SA, REF(11), $0x895cd7be, 22)
 106         ROUND(<F1>, SA, SB, SC, SD, REF(12), $0x6b901122, 7)
 107         ROUND(<F1>, SD, SA, SB, SC, REF(13), $0xfd987193, 12)
 108         ROUND(<F1>, SC, SD, SA, SB, REF(14), $0xa679438e, 17)
 109         ROUND(<F1>, SB, SC, SD, SA, REF(15), $0x49b40821, 22)
 110
 111         ROUND(<F2>, SA, SB, SC, SD, REF( 1), $0xf61e2562, 5)
 112         ROUND(<F2>, SD, SA, SB, SC, REF( 6), $0xc040b340, 9)
 113         ROUND(<F2>, SC, SD, SA, SB, REF(11), $0x265e5a51, 14)
 114         ROUND(<F2>, SB, SC, SD, SA, REF( 0), $0xe9b6c7aa, 20)
 115         ROUND(<F2>, SA, SB, SC, SD, REF( 5), $0xd62f105d, 5)
 116         ROUND(<F2>, SD, SA, SB, SC, REF(10), $0x02441453, 9)
 117         ROUND(<F2>, SC, SD, SA, SB, REF(15), $0xd8a1e681, 14)
 118         ROUND(<F2>, SB, SC, SD, SA, REF( 4), $0xe7d3fbc8, 20)
 119         ROUND(<F2>, SA, SB, SC, SD, REF( 9), $0x21e1cde6, 5)
 120         ROUND(<F2>, SD, SA, SB, SC, REF(14), $0xc33707d6, 9)
 121         ROUND(<F2>, SC, SD, SA, SB, REF( 3), $0xf4d50d87, 14)
 122         ROUND(<F2>, SB, SC, SD, SA, REF( 8), $0x455a14ed, 20)
 123         ROUND(<F2>, SA, SB, SC, SD, REF(13), $0xa9e3e905, 5)
 124         ROUND(<F2>, SD, SA, SB, SC, REF( 2), $0xfcefa3f8, 9)
 125         ROUND(<F2>, SC, SD, SA, SB, REF( 7), $0x676f02d9, 14)
 126         ROUND(<F2>, SB, SC, SD, SA, REF(12), $0x8d2a4c8a, 20)
 127
 128         ROUND(<F3>, SA, SB, SC, SD, REF( 5), $0xfffa3942, 4)
 129         ROUND(<F3>, SD, SA, SB, SC, REF( 8), $0x8771f681, 11)
 130         ROUND(<F3>, SC, SD, SA, SB, REF(11), $0x6d9d6122, 16)
 131         ROUND(<F3>, SB, SC, SD, SA, REF(14), $0xfde5380c, 23)
 132         ROUND(<F3>, SA, SB, SC, SD, REF( 1), $0xa4beea44, 4)
 133         ROUND(<F3>, SD, SA, SB, SC, REF( 4), $0x4bdecfa9, 11)
 134         ROUND(<F3>, SC, SD, SA, SB, REF( 7), $0xf6bb4b60, 16)
 135         ROUND(<F3>, SB, SC, SD, SA, REF(10), $0xbebfbc70, 23)
 136         ROUND(<F3>, SA, SB, SC, SD, REF(13), $0x289b7ec6, 4)
 137         ROUND(<F3>, SD, SA, SB, SC, REF( 0), $0xeaa127fa, 11)
 138         ROUND(<F3>, SC, SD, SA, SB, REF( 3), $0xd4ef3085, 16)
 139         ROUND(<F3>, SB, SC, SD, SA, REF( 6), $0x04881d05, 23)
 140         ROUND(<F3>, SA, SB, SC, SD, REF( 9), $0xd9d4d039, 4)
 141         ROUND(<F3>, SD, SA, SB, SC, REF(12), $0xe6db99e5, 11)
 142         ROUND(<F3>, SC, SD, SA, SB, REF(15), $0x1fa27cf8, 16)
 143         ROUND(<F3>, SB, SC, SD, SA, REF( 2), $0xc4ac5665, 23)
 144
 145         ROUND(<F4>, SA, SB, SC, SD, REF( 0), $0xf4292244, 6)
 146         ROUND(<F4>, SD, SA, SB, SC, REF( 7), $0x432aff97, 10)
 147         ROUND(<F4>, SC, SD, SA, SB, REF(14), $0xab9423a7, 15)
 148         ROUND(<F4>, SB, SC, SD, SA, REF( 5), $0xfc93a039, 21)
 149         ROUND(<F4>, SA, SB, SC, SD, REF(12), $0x655b59c3, 6)
 150         ROUND(<F4>, SD, SA, SB, SC, REF( 3), $0x8f0ccc92, 10)
 151         ROUND(<F4>, SC, SD, SA, SB, REF(10), $0xffeff47d, 15)
 152         ROUND(<F4>, SB, SC, SD, SA, REF( 1), $0x85845dd1, 21)
 153         ROUND(<F4>, SA, SB, SC, SD, REF( 8), $0x6fa87e4f, 6)
 154         ROUND(<F4>, SD, SA, SB, SC, REF(15), $0xfe2ce6e0, 10)
 155         ROUND(<F4>, SC, SD, SA, SB, REF( 6), $0xa3014314, 15)
 156         ROUND(<F4>, SB, SC, SD, SA, REF(13), $0x4e0811a1, 21)
 157         ROUND(<F4>, SA, SB, SC, SD, REF( 4), $0xf7537e82, 6)
 158         ROUND(<F4>, SD, SA, SB, SC, REF(11), $0xbd3af235, 10)
 159         ROUND(<F4>, SC, SD, SA, SB, REF( 2), $0x2ad7d2bb, 15)
 160         ROUND(<F4>, SB, SC, SD, SA, REF( 9), $0xeb86d391, 21)
 161
 162         C Update the state vector
 163         movl    20(%esp),TMP
 164         addl    SA, (TMP)
 165         addl    SB, 4(TMP)
 166         addl    SC, 8(TMP)
 167         addl    SD, 12(TMP)
 168
 169         popl    %edi
 170         popl    %esi
 171         popl    %ebp
 172         popl    %ebx
 173         ret
 174 EPILOGUE(_nettle_md5_compress)