| 1 | #! /usr/bin/env perl
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| 2 | # Author: Marc Bevand <bevand_m (at) epita.fr>
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| 3 | # Copyright 2005-2020 The OpenSSL Project Authors. All Rights Reserved.
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| 4 | #
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| 5 | # Licensed under the OpenSSL license (the "License"). You may not use
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| 6 | # this file except in compliance with the License. You can obtain a copy
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| 7 | # in the file LICENSE in the source distribution or at
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| 8 | # https://www.openssl.org/source/license.html
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| 9 |
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| 10 | # MD5 optimized for AMD64.
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| 11 |
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| 12 | use strict;
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| 13 |
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| 14 | my $code;
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| 15 |
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| 16 | # round1_step() does:
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| 17 | # dst = x + ((dst + F(x,y,z) + X[k] + T_i) <<< s)
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| 18 | # %r10d = X[k_next]
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| 19 | # %r11d = z' (copy of z for the next step)
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| 20 | # Each round1_step() takes about 5.3 clocks (9 instructions, 1.7 IPC)
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| 21 | sub round1_step
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| 22 | {
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| 23 | my ($pos, $dst, $x, $y, $z, $k_next, $T_i, $s) = @_;
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| 24 | $code .= " mov 0*4(%rsi), %r10d /* (NEXT STEP) X[0] */\n" if ($pos == -1);
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| 25 | $code .= " mov %edx, %r11d /* (NEXT STEP) z' = %edx */\n" if ($pos == -1);
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| 26 | $code .= <<EOF;
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| 27 | xor $y, %r11d /* y ^ ... */
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| 28 | lea $T_i($dst,%r10d),$dst /* Const + dst + ... */
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| 29 | and $x, %r11d /* x & ... */
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| 30 | mov $k_next*4(%rsi),%r10d /* (NEXT STEP) X[$k_next] */
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| 31 | xor $z, %r11d /* z ^ ... */
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| 32 | add %r11d, $dst /* dst += ... */
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| 33 | rol \$$s, $dst /* dst <<< s */
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| 34 | mov $y, %r11d /* (NEXT STEP) z' = $y */
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| 35 | add $x, $dst /* dst += x */
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| 36 | EOF
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| 37 | }
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| 38 |
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| 39 | # round2_step() does:
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| 40 | # dst = x + ((dst + G(x,y,z) + X[k] + T_i) <<< s)
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| 41 | # %r10d = X[k_next]
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| 42 | # %r11d = z' (copy of z for the next step)
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| 43 | # %r12d = z' (copy of z for the next step)
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| 44 | # Each round2_step() takes about 5.4 clocks (11 instructions, 2.0 IPC)
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| 45 | sub round2_step
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| 46 | {
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| 47 | my ($pos, $dst, $x, $y, $z, $k_next, $T_i, $s) = @_;
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| 48 | $code .= " mov %edx, %r11d /* (NEXT STEP) z' = %edx */\n" if ($pos == -1);
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| 49 | $code .= " mov %edx, %r12d /* (NEXT STEP) z' = %edx */\n" if ($pos == -1);
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| 50 | $code .= <<EOF;
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| 51 | not %r11d /* not z */
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| 52 | and $x, %r12d /* x & z */
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| 53 | lea $T_i($dst,%r10d),$dst /* Const + dst + ... */
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| 54 | and $y, %r11d /* y & (not z) */
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| 55 | mov $k_next*4(%rsi),%r10d /* (NEXT STEP) X[$k_next] */
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| 56 | or %r11d, %r12d /* (y & (not z)) | (x & z) */
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| 57 | mov $y, %r11d /* (NEXT STEP) z' = $y */
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| 58 | add %r12d, $dst /* dst += ... */
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| 59 | mov $y, %r12d /* (NEXT STEP) z' = $y */
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| 60 | rol \$$s, $dst /* dst <<< s */
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| 61 | add $x, $dst /* dst += x */
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| 62 | EOF
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| 63 | }
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| 64 |
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| 65 | # round3_step() does:
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| 66 | # dst = x + ((dst + H(x,y,z) + X[k] + T_i) <<< s)
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| 67 | # %r10d = X[k_next]
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| 68 | # %r11d = y' (copy of y for the next step)
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| 69 | # Each round3_step() takes about 4.2 clocks (8 instructions, 1.9 IPC)
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| 70 | { my $round3_alter=0;
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| 71 | sub round3_step
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| 72 | {
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| 73 | my ($pos, $dst, $x, $y, $z, $k_next, $T_i, $s) = @_;
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| 74 | $code .= " mov %ecx, %r11d /* (NEXT STEP) y' = %ecx */\n" if ($pos == -1);
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| 75 | $code .= <<EOF;
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| 76 | lea $T_i($dst,%r10d),$dst /* Const + dst + ... */
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| 77 | xor $z, %r11d /* z ^ ... */
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| 78 | mov $k_next*4(%rsi),%r10d /* (NEXT STEP) X[$k_next] */
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| 79 | xor $x, %r11d /* x ^ ... */
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| 80 | add %r11d, $dst /* dst += ... */
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| 81 | EOF
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| 82 | $code .= <<EOF if ($round3_alter);
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| 83 | rol \$$s, $dst /* dst <<< s */
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| 84 | mov $x, %r11d /* (NEXT STEP) y' = $x */
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| 85 | EOF
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| 86 | $code .= <<EOF if (!$round3_alter);
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| 87 | mov $x, %r11d /* (NEXT STEP) y' = $x */
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| 88 | rol \$$s, $dst /* dst <<< s */
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| 89 | EOF
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| 90 | $code .= <<EOF;
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| 91 | add $x, $dst /* dst += x */
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| 92 | EOF
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| 93 | $round3_alter^=1;
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| 94 | }
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| 95 | }
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| 96 |
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| 97 | # round4_step() does:
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| 98 | # dst = x + ((dst + I(x,y,z) + X[k] + T_i) <<< s)
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| 99 | # %r10d = X[k_next]
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| 100 | # %r11d = not z' (copy of not z for the next step)
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| 101 | # Each round4_step() takes about 5.2 clocks (9 instructions, 1.7 IPC)
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| 102 | sub round4_step
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| 103 | {
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| 104 | my ($pos, $dst, $x, $y, $z, $k_next, $T_i, $s) = @_;
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| 105 | $code .= " mov \$0xffffffff, %r11d\n" if ($pos == -1);
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| 106 | $code .= " xor %edx, %r11d /* (NEXT STEP) not z' = not %edx*/\n"
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| 107 | if ($pos == -1);
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| 108 | $code .= <<EOF;
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| 109 | lea $T_i($dst,%r10d),$dst /* Const + dst + ... */
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| 110 | or $x, %r11d /* x | ... */
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| 111 | mov $k_next*4(%rsi),%r10d /* (NEXT STEP) X[$k_next] */
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| 112 | xor $y, %r11d /* y ^ ... */
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| 113 | add %r11d, $dst /* dst += ... */
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| 114 | mov \$0xffffffff, %r11d
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| 115 | rol \$$s, $dst /* dst <<< s */
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| 116 | xor $y, %r11d /* (NEXT STEP) not z' = not $y */
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| 117 | add $x, $dst /* dst += x */
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| 118 | EOF
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| 119 | }
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| 120 |
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| 121 | no warnings qw(uninitialized);
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| 122 | my $flavour = shift;
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| 123 | my $output = shift;
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| 124 | if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
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| 125 |
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| 126 | my $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
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| 127 |
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| 128 | $0 =~ m/(.*[\/\\])[^\/\\]+$/; my $dir=$1; my $xlate;
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| 129 | ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
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| 130 | ( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
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| 131 | die "can't locate x86_64-xlate.pl";
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| 132 |
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| 133 | open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\"";
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| 134 | *STDOUT=*OUT;
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| 135 |
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| 136 | $code .= <<EOF;
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| 137 | .text
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| 138 | .align 16
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| 139 |
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| 140 | .globl md5_block_asm_data_order
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| 141 | .type md5_block_asm_data_order,\@function,3
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| 142 | md5_block_asm_data_order:
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| 143 | .cfi_startproc
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| 144 | push %rbp
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| 145 | .cfi_push %rbp
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| 146 | push %rbx
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| 147 | .cfi_push %rbx
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| 148 | push %r12
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| 149 | .cfi_push %r12
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| 150 | push %r14
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| 151 | .cfi_push %r14
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| 152 | push %r15
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| 153 | .cfi_push %r15
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| 154 | .Lprologue:
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| 155 |
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| 156 | # rdi = arg #1 (ctx, MD5_CTX pointer)
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| 157 | # rsi = arg #2 (ptr, data pointer)
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| 158 | # rdx = arg #3 (nbr, number of 16-word blocks to process)
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| 159 | mov %rdi, %rbp # rbp = ctx
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| 160 | shl \$6, %rdx # rdx = nbr in bytes
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| 161 | lea (%rsi,%rdx), %rdi # rdi = end
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| 162 | mov 0*4(%rbp), %eax # eax = ctx->A
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| 163 | mov 1*4(%rbp), %ebx # ebx = ctx->B
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| 164 | mov 2*4(%rbp), %ecx # ecx = ctx->C
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| 165 | mov 3*4(%rbp), %edx # edx = ctx->D
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| 166 | # end is 'rdi'
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| 167 | # ptr is 'rsi'
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| 168 | # A is 'eax'
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| 169 | # B is 'ebx'
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| 170 | # C is 'ecx'
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| 171 | # D is 'edx'
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| 172 |
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| 173 | cmp %rdi, %rsi # cmp end with ptr
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| 174 | je .Lend # jmp if ptr == end
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| 175 |
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| 176 | # BEGIN of loop over 16-word blocks
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| 177 | .Lloop: # save old values of A, B, C, D
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| 178 | mov %eax, %r8d
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| 179 | mov %ebx, %r9d
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| 180 | mov %ecx, %r14d
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| 181 | mov %edx, %r15d
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| 182 | EOF
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| 183 | round1_step(-1,'%eax','%ebx','%ecx','%edx', '1','0xd76aa478', '7');
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| 184 | round1_step( 0,'%edx','%eax','%ebx','%ecx', '2','0xe8c7b756','12');
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| 185 | round1_step( 0,'%ecx','%edx','%eax','%ebx', '3','0x242070db','17');
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| 186 | round1_step( 0,'%ebx','%ecx','%edx','%eax', '4','0xc1bdceee','22');
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| 187 | round1_step( 0,'%eax','%ebx','%ecx','%edx', '5','0xf57c0faf', '7');
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| 188 | round1_step( 0,'%edx','%eax','%ebx','%ecx', '6','0x4787c62a','12');
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| 189 | round1_step( 0,'%ecx','%edx','%eax','%ebx', '7','0xa8304613','17');
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| 190 | round1_step( 0,'%ebx','%ecx','%edx','%eax', '8','0xfd469501','22');
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| 191 | round1_step( 0,'%eax','%ebx','%ecx','%edx', '9','0x698098d8', '7');
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| 192 | round1_step( 0,'%edx','%eax','%ebx','%ecx','10','0x8b44f7af','12');
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| 193 | round1_step( 0,'%ecx','%edx','%eax','%ebx','11','0xffff5bb1','17');
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| 194 | round1_step( 0,'%ebx','%ecx','%edx','%eax','12','0x895cd7be','22');
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| 195 | round1_step( 0,'%eax','%ebx','%ecx','%edx','13','0x6b901122', '7');
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| 196 | round1_step( 0,'%edx','%eax','%ebx','%ecx','14','0xfd987193','12');
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| 197 | round1_step( 0,'%ecx','%edx','%eax','%ebx','15','0xa679438e','17');
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| 198 | round1_step( 1,'%ebx','%ecx','%edx','%eax', '1','0x49b40821','22');
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| 199 |
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| 200 | round2_step(-1,'%eax','%ebx','%ecx','%edx', '6','0xf61e2562', '5');
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| 201 | round2_step( 0,'%edx','%eax','%ebx','%ecx','11','0xc040b340', '9');
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| 202 | round2_step( 0,'%ecx','%edx','%eax','%ebx', '0','0x265e5a51','14');
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| 203 | round2_step( 0,'%ebx','%ecx','%edx','%eax', '5','0xe9b6c7aa','20');
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| 204 | round2_step( 0,'%eax','%ebx','%ecx','%edx','10','0xd62f105d', '5');
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| 205 | round2_step( 0,'%edx','%eax','%ebx','%ecx','15', '0x2441453', '9');
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| 206 | round2_step( 0,'%ecx','%edx','%eax','%ebx', '4','0xd8a1e681','14');
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| 207 | round2_step( 0,'%ebx','%ecx','%edx','%eax', '9','0xe7d3fbc8','20');
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| 208 | round2_step( 0,'%eax','%ebx','%ecx','%edx','14','0x21e1cde6', '5');
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| 209 | round2_step( 0,'%edx','%eax','%ebx','%ecx', '3','0xc33707d6', '9');
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| 210 | round2_step( 0,'%ecx','%edx','%eax','%ebx', '8','0xf4d50d87','14');
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| 211 | round2_step( 0,'%ebx','%ecx','%edx','%eax','13','0x455a14ed','20');
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| 212 | round2_step( 0,'%eax','%ebx','%ecx','%edx', '2','0xa9e3e905', '5');
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| 213 | round2_step( 0,'%edx','%eax','%ebx','%ecx', '7','0xfcefa3f8', '9');
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| 214 | round2_step( 0,'%ecx','%edx','%eax','%ebx','12','0x676f02d9','14');
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| 215 | round2_step( 1,'%ebx','%ecx','%edx','%eax', '5','0x8d2a4c8a','20');
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| 216 |
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| 217 | round3_step(-1,'%eax','%ebx','%ecx','%edx', '8','0xfffa3942', '4');
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| 218 | round3_step( 0,'%edx','%eax','%ebx','%ecx','11','0x8771f681','11');
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| 219 | round3_step( 0,'%ecx','%edx','%eax','%ebx','14','0x6d9d6122','16');
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| 220 | round3_step( 0,'%ebx','%ecx','%edx','%eax', '1','0xfde5380c','23');
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| 221 | round3_step( 0,'%eax','%ebx','%ecx','%edx', '4','0xa4beea44', '4');
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| 222 | round3_step( 0,'%edx','%eax','%ebx','%ecx', '7','0x4bdecfa9','11');
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| 223 | round3_step( 0,'%ecx','%edx','%eax','%ebx','10','0xf6bb4b60','16');
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| 224 | round3_step( 0,'%ebx','%ecx','%edx','%eax','13','0xbebfbc70','23');
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| 225 | round3_step( 0,'%eax','%ebx','%ecx','%edx', '0','0x289b7ec6', '4');
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| 226 | round3_step( 0,'%edx','%eax','%ebx','%ecx', '3','0xeaa127fa','11');
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| 227 | round3_step( 0,'%ecx','%edx','%eax','%ebx', '6','0xd4ef3085','16');
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| 228 | round3_step( 0,'%ebx','%ecx','%edx','%eax', '9', '0x4881d05','23');
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| 229 | round3_step( 0,'%eax','%ebx','%ecx','%edx','12','0xd9d4d039', '4');
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| 230 | round3_step( 0,'%edx','%eax','%ebx','%ecx','15','0xe6db99e5','11');
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| 231 | round3_step( 0,'%ecx','%edx','%eax','%ebx', '2','0x1fa27cf8','16');
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| 232 | round3_step( 1,'%ebx','%ecx','%edx','%eax', '0','0xc4ac5665','23');
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| 233 |
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| 234 | round4_step(-1,'%eax','%ebx','%ecx','%edx', '7','0xf4292244', '6');
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| 235 | round4_step( 0,'%edx','%eax','%ebx','%ecx','14','0x432aff97','10');
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| 236 | round4_step( 0,'%ecx','%edx','%eax','%ebx', '5','0xab9423a7','15');
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| 237 | round4_step( 0,'%ebx','%ecx','%edx','%eax','12','0xfc93a039','21');
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| 238 | round4_step( 0,'%eax','%ebx','%ecx','%edx', '3','0x655b59c3', '6');
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| 239 | round4_step( 0,'%edx','%eax','%ebx','%ecx','10','0x8f0ccc92','10');
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| 240 | round4_step( 0,'%ecx','%edx','%eax','%ebx', '1','0xffeff47d','15');
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| 241 | round4_step( 0,'%ebx','%ecx','%edx','%eax', '8','0x85845dd1','21');
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| 242 | round4_step( 0,'%eax','%ebx','%ecx','%edx','15','0x6fa87e4f', '6');
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| 243 | round4_step( 0,'%edx','%eax','%ebx','%ecx', '6','0xfe2ce6e0','10');
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| 244 | round4_step( 0,'%ecx','%edx','%eax','%ebx','13','0xa3014314','15');
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| 245 | round4_step( 0,'%ebx','%ecx','%edx','%eax', '4','0x4e0811a1','21');
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| 246 | round4_step( 0,'%eax','%ebx','%ecx','%edx','11','0xf7537e82', '6');
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| 247 | round4_step( 0,'%edx','%eax','%ebx','%ecx', '2','0xbd3af235','10');
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| 248 | round4_step( 0,'%ecx','%edx','%eax','%ebx', '9','0x2ad7d2bb','15');
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| 249 | round4_step( 1,'%ebx','%ecx','%edx','%eax', '0','0xeb86d391','21');
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| 250 | $code .= <<EOF;
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| 251 | # add old values of A, B, C, D
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| 252 | add %r8d, %eax
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| 253 | add %r9d, %ebx
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| 254 | add %r14d, %ecx
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| 255 | add %r15d, %edx
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| 256 |
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| 257 | # loop control
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| 258 | add \$64, %rsi # ptr += 64
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| 259 | cmp %rdi, %rsi # cmp end with ptr
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| 260 | jb .Lloop # jmp if ptr < end
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| 261 | # END of loop over 16-word blocks
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| 262 |
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| 263 | .Lend:
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| 264 | mov %eax, 0*4(%rbp) # ctx->A = A
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| 265 | mov %ebx, 1*4(%rbp) # ctx->B = B
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| 266 | mov %ecx, 2*4(%rbp) # ctx->C = C
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| 267 | mov %edx, 3*4(%rbp) # ctx->D = D
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| 268 |
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| 269 | mov (%rsp),%r15
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| 270 | .cfi_restore %r15
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| 271 | mov 8(%rsp),%r14
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| 272 | .cfi_restore %r14
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| 273 | mov 16(%rsp),%r12
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| 274 | .cfi_restore %r12
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| 275 | mov 24(%rsp),%rbx
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| 276 | .cfi_restore %rbx
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| 277 | mov 32(%rsp),%rbp
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| 278 | .cfi_restore %rbp
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| 279 | add \$40,%rsp
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| 280 | .cfi_adjust_cfa_offset -40
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| 281 | .Lepilogue:
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| 282 | ret
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| 283 | .cfi_endproc
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| 284 | .size md5_block_asm_data_order,.-md5_block_asm_data_order
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| 285 | EOF
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| 286 |
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| 287 | # EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
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| 288 | # CONTEXT *context,DISPATCHER_CONTEXT *disp)
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| 289 | if ($win64) {
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| 290 | my $rec="%rcx";
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| 291 | my $frame="%rdx";
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| 292 | my $context="%r8";
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| 293 | my $disp="%r9";
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| 294 |
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| 295 | $code.=<<___;
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| 296 | .extern __imp_RtlVirtualUnwind
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| 297 | .type se_handler,\@abi-omnipotent
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| 298 | .align 16
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| 299 | se_handler:
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| 300 | push %rsi
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| 301 | push %rdi
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| 302 | push %rbx
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| 303 | push %rbp
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| 304 | push %r12
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| 305 | push %r13
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| 306 | push %r14
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| 307 | push %r15
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| 308 | pushfq
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| 309 | sub \$64,%rsp
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| 310 |
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| 311 | mov 120($context),%rax # pull context->Rax
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| 312 | mov 248($context),%rbx # pull context->Rip
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| 313 |
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| 314 | lea .Lprologue(%rip),%r10
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| 315 | cmp %r10,%rbx # context->Rip<.Lprologue
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| 316 | jb .Lin_prologue
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| 317 |
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| 318 | mov 152($context),%rax # pull context->Rsp
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| 319 |
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| 320 | lea .Lepilogue(%rip),%r10
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| 321 | cmp %r10,%rbx # context->Rip>=.Lepilogue
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| 322 | jae .Lin_prologue
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| 323 |
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| 324 | lea 40(%rax),%rax
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| 325 |
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| 326 | mov -8(%rax),%rbp
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| 327 | mov -16(%rax),%rbx
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| 328 | mov -24(%rax),%r12
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| 329 | mov -32(%rax),%r14
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| 330 | mov -40(%rax),%r15
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| 331 | mov %rbx,144($context) # restore context->Rbx
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| 332 | mov %rbp,160($context) # restore context->Rbp
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| 333 | mov %r12,216($context) # restore context->R12
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| 334 | mov %r14,232($context) # restore context->R14
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| 335 | mov %r15,240($context) # restore context->R15
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| 336 |
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| 337 | .Lin_prologue:
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| 338 | mov 8(%rax),%rdi
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| 339 | mov 16(%rax),%rsi
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| 340 | mov %rax,152($context) # restore context->Rsp
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| 341 | mov %rsi,168($context) # restore context->Rsi
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| 342 | mov %rdi,176($context) # restore context->Rdi
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| 343 |
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| 344 | mov 40($disp),%rdi # disp->ContextRecord
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| 345 | mov $context,%rsi # context
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| 346 | mov \$154,%ecx # sizeof(CONTEXT)
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| 347 | .long 0xa548f3fc # cld; rep movsq
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| 348 |
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| 349 | mov $disp,%rsi
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| 350 | xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER
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| 351 | mov 8(%rsi),%rdx # arg2, disp->ImageBase
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| 352 | mov 0(%rsi),%r8 # arg3, disp->ControlPc
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| 353 | mov 16(%rsi),%r9 # arg4, disp->FunctionEntry
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| 354 | mov 40(%rsi),%r10 # disp->ContextRecord
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| 355 | lea 56(%rsi),%r11 # &disp->HandlerData
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| 356 | lea 24(%rsi),%r12 # &disp->EstablisherFrame
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| 357 | mov %r10,32(%rsp) # arg5
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| 358 | mov %r11,40(%rsp) # arg6
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| 359 | mov %r12,48(%rsp) # arg7
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| 360 | mov %rcx,56(%rsp) # arg8, (NULL)
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| 361 | call *__imp_RtlVirtualUnwind(%rip)
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| 362 |
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| 363 | mov \$1,%eax # ExceptionContinueSearch
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| 364 | add \$64,%rsp
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| 365 | popfq
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| 366 | pop %r15
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| 367 | pop %r14
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| 368 | pop %r13
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| 369 | pop %r12
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| 370 | pop %rbp
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| 371 | pop %rbx
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| 372 | pop %rdi
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| 373 | pop %rsi
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| 374 | ret
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| 375 | .size se_handler,.-se_handler
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| 376 |
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| 377 | .section .pdata
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| 378 | .align 4
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| 379 | .rva .LSEH_begin_md5_block_asm_data_order
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| 380 | .rva .LSEH_end_md5_block_asm_data_order
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| 381 | .rva .LSEH_info_md5_block_asm_data_order
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| 382 |
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| 383 | .section .xdata
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| 384 | .align 8
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| 385 | .LSEH_info_md5_block_asm_data_order:
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| 386 | .byte 9,0,0,0
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| 387 | .rva se_handler
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| 388 | ___
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| 389 | }
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| 390 |
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| 391 | print $code;
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| 392 |
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| 393 | close STDOUT or die "error closing STDOUT: $!";
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