| 1 | #! /usr/bin/env perl
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| 2 | # Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | #
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| 4 | # Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | # this file except in compliance with the License. You can obtain a copy
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| 6 | # in the file LICENSE in the source distribution or at
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| 7 | # https://www.openssl.org/source/license.html
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| 8 |
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| 9 | my $flavour = shift;
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| 10 | my $output = shift;
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| 11 | open STDOUT,">$output" || die "can't open $output: $!";
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| 12 |
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| 13 | my %GLOBALS;
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| 14 | my %TYPES;
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| 15 | my $dotinlocallabels=($flavour=~/linux/)?1:0;
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| 16 |
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| 17 | ################################################################
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| 18 | # directives which need special treatment on different platforms
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| 19 | ################################################################
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| 20 | my $type = sub {
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| 21 | my ($dir,$name,$type) = @_;
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| 22 |
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| 23 | $TYPES{$name} = $type;
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| 24 | if ($flavour =~ /linux/) {
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| 25 | $name =~ s|^\.||;
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| 26 | ".type $name,$type";
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| 27 | } else {
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| 28 | "";
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| 29 | }
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| 30 | };
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| 31 | my $globl = sub {
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| 32 | my $junk = shift;
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| 33 | my $name = shift;
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| 34 | my $global = \$GLOBALS{$name};
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| 35 | my $type = \$TYPES{$name};
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| 36 | my $ret;
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| 37 |
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| 38 | $name =~ s|^\.||;
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| 39 |
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| 40 | SWITCH: for ($flavour) {
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| 41 | /aix/ && do { if (!$$type) {
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| 42 | $$type = "\@function";
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| 43 | }
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| 44 | if ($$type =~ /function/) {
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| 45 | $name = ".$name";
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| 46 | }
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| 47 | last;
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| 48 | };
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| 49 | /osx/ && do { $name = "_$name";
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| 50 | last;
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| 51 | };
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| 52 | /linux.*(32|64(le|v2))/
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| 53 | && do { $ret .= ".globl $name";
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| 54 | if (!$$type) {
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| 55 | $ret .= "\n.type $name,\@function";
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| 56 | $$type = "\@function";
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| 57 | }
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| 58 | last;
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| 59 | };
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| 60 | /linux.*64/ && do { $ret .= ".globl $name";
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| 61 | if (!$$type) {
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| 62 | $ret .= "\n.type $name,\@function";
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| 63 | $$type = "\@function";
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| 64 | }
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| 65 | if ($$type =~ /function/) {
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| 66 | $ret .= "\n.section \".opd\",\"aw\"";
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| 67 | $ret .= "\n.align 3";
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| 68 | $ret .= "\n$name:";
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| 69 | $ret .= "\n.quad .$name,.TOC.\@tocbase,0";
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| 70 | $ret .= "\n.previous";
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| 71 | $name = ".$name";
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| 72 | }
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| 73 | last;
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| 74 | };
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| 75 | }
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| 76 |
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| 77 | $ret = ".globl $name" if (!$ret);
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| 78 | $$global = $name;
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| 79 | $ret;
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| 80 | };
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| 81 | my $text = sub {
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| 82 | my $ret = ($flavour =~ /aix/) ? ".csect\t.text[PR],7" : ".text";
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| 83 | $ret = ".abiversion 2\n".$ret if ($flavour =~ /linux.*64(le|v2)/);
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| 84 | $ret;
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| 85 | };
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| 86 | my $p2align = sub {
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| 87 | my $ret = ($flavour =~ /aix64-as/) ? "" : ".p2align $line";
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| 88 | $ret;
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| 89 | };
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| 90 | my $machine = sub {
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| 91 | my $junk = shift;
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| 92 | my $arch = shift;
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| 93 | if ($flavour =~ /osx/)
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| 94 | { $arch =~ s/\"//g;
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| 95 | $arch = ($flavour=~/64/) ? "ppc970-64" : "ppc970" if ($arch eq "any");
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| 96 | }
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| 97 | ".machine $arch";
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| 98 | };
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| 99 | my $size = sub {
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| 100 | if ($flavour =~ /linux/)
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| 101 | { shift;
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| 102 | my $name = shift;
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| 103 | my $real = $GLOBALS{$name} ? \$GLOBALS{$name} : \$name;
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| 104 | my $ret = ".size $$real,.-$$real";
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| 105 | $name =~ s|^\.||;
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| 106 | if ($$real ne $name) {
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| 107 | $ret .= "\n.size $name,.-$$real";
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| 108 | }
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| 109 | $ret;
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| 110 | }
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| 111 | else
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| 112 | { ""; }
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| 113 | };
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| 114 | my $asciz = sub {
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| 115 | shift;
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| 116 | my $line = join(",",@_);
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| 117 | if ($line =~ /^"(.*)"$/)
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| 118 | { ".byte " . join(",",unpack("C*",$1),0) . "\n.align 2"; }
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| 119 | else
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| 120 | { ""; }
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| 121 | };
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| 122 | my $quad = sub {
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| 123 | shift;
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| 124 | my @ret;
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| 125 | my ($hi,$lo);
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| 126 | for (@_) {
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| 127 | if (/^0x([0-9a-f]*?)([0-9a-f]{1,8})$/io)
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| 128 | { $hi=$1?"0x$1":"0"; $lo="0x$2"; }
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| 129 | elsif (/^([0-9]+)$/o)
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| 130 | { $hi=$1>>32; $lo=$1&0xffffffff; } # error-prone with 32-bit perl
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| 131 | else
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| 132 | { $hi=undef; $lo=$_; }
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| 133 |
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| 134 | if (defined($hi))
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| 135 | { push(@ret,$flavour=~/le$/o?".long\t$lo,$hi":".long\t$hi,$lo"); }
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| 136 | else
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| 137 | { push(@ret,".quad $lo"); }
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| 138 | }
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| 139 | join("\n",@ret);
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| 140 | };
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| 141 |
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| 142 | ################################################################
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| 143 | # vector register number hacking
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| 144 | ################################################################
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| 145 |
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| 146 | # It is convenient to be able to set a variable like:
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| 147 | # my $foo = "v33";
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| 148 | # and use this in different contexts where:
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| 149 | # * a VSR (Vector-Scaler Register) number (i.e. "v33") is required
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| 150 | # * a VR (Vector Register) number (i.e. "v1") is required
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| 151 | # Map VSR numbering to VR number for certain vector instructions.
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| 152 |
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| 153 | # vs<N> -> v<N-32> if N > 32
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| 154 | sub vsr2vr1 {
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| 155 | my $in = shift;
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| 156 | my ($prefix, $reg) = ($in =~ m/(\D*)(\d+)/);
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| 157 |
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| 158 | my $n = int($reg);
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| 159 | if ($n >= 32) {
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| 160 | $n -= 32;
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| 161 | }
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| 162 |
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| 163 | return "${prefix}${n}";
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| 164 | }
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| 165 | # As above for first $num register args, returns list
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| 166 | sub _vsr2vr {
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| 167 | my $num = shift;
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| 168 | my @rest = @_;
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| 169 | my @subst = splice(@rest, 0, $num);
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| 170 |
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| 171 | @subst = map { vsr2vr1($_); } @subst;
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| 172 |
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| 173 | return (@subst, @rest);
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| 174 | }
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| 175 | # As above but 1st arg ($f) is extracted and reinserted after
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| 176 | # processing so that it can be ignored by a code generation function
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| 177 | # that consumes the result
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| 178 | sub vsr2vr_args {
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| 179 | my $num = shift;
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| 180 | my $f = shift;
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| 181 |
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| 182 | my @out = _vsr2vr($num, @_);
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| 183 |
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| 184 | return ($f, @out);
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| 185 | }
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| 186 | # As above but 1st arg is mnemonic, return formatted instruction
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| 187 | sub vsr2vr {
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| 188 | my $mnemonic = shift;
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| 189 | my $num = shift;
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| 190 | my $f = shift;
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| 191 |
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| 192 | my @out = _vsr2vr($num, @_);
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| 193 |
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| 194 | " ${mnemonic}${f} " . join(",", @out);
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| 195 | }
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| 196 |
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| 197 | # ISA 2.03
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| 198 | my $vsel = sub { vsr2vr("vsel", 4, @_); };
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| 199 | my $vsl = sub { vsr2vr("vsl", 3, @_); };
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| 200 | my $vspltisb = sub { vsr2vr("vspltisb", 1, @_); };
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| 201 | my $vspltisw = sub { vsr2vr("vspltisw", 1, @_); };
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| 202 | my $vsr = sub { vsr2vr("vsr", 3, @_); };
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| 203 | my $vsro = sub { vsr2vr("vsro", 3, @_); };
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| 204 |
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| 205 | # ISA 3.0
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| 206 | my $lxsd = sub { vsr2vr("lxsd", 1, @_); };
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| 207 |
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| 208 | ################################################################
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| 209 | # simplified mnemonics not handled by at least one assembler
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| 210 | ################################################################
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| 211 | my $cmplw = sub {
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| 212 | my $f = shift;
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| 213 | my $cr = 0; $cr = shift if ($#_>1);
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| 214 | # Some out-of-date 32-bit GNU assembler just can't handle cmplw...
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| 215 | ($flavour =~ /linux.*32/) ?
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| 216 | " .long ".sprintf "0x%x",31<<26|$cr<<23|$_[0]<<16|$_[1]<<11|64 :
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| 217 | " cmplw ".join(',',$cr,@_);
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| 218 | };
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| 219 | my $bdnz = sub {
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| 220 | my $f = shift;
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| 221 | my $bo = $f=~/[\+\-]/ ? 16+9 : 16; # optional "to be taken" hint
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| 222 | " bc $bo,0,".shift;
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| 223 | } if ($flavour!~/linux/);
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| 224 | my $bltlr = sub {
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| 225 | my $f = shift;
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| 226 | my $bo = $f=~/\-/ ? 12+2 : 12; # optional "not to be taken" hint
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| 227 | ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints
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| 228 | " .long ".sprintf "0x%x",19<<26|$bo<<21|16<<1 :
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| 229 | " bclr $bo,0";
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| 230 | };
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| 231 | my $bnelr = sub {
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| 232 | my $f = shift;
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| 233 | my $bo = $f=~/\-/ ? 4+2 : 4; # optional "not to be taken" hint
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| 234 | ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints
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| 235 | " .long ".sprintf "0x%x",19<<26|$bo<<21|2<<16|16<<1 :
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| 236 | " bclr $bo,2";
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| 237 | };
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| 238 | my $beqlr = sub {
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| 239 | my $f = shift;
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| 240 | my $bo = $f=~/-/ ? 12+2 : 12; # optional "not to be taken" hint
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| 241 | ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints
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| 242 | " .long ".sprintf "0x%X",19<<26|$bo<<21|2<<16|16<<1 :
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| 243 | " bclr $bo,2";
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| 244 | };
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| 245 | # GNU assembler can't handle extrdi rA,rS,16,48, or when sum of last two
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| 246 | # arguments is 64, with "operand out of range" error.
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| 247 | my $extrdi = sub {
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| 248 | my ($f,$ra,$rs,$n,$b) = @_;
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| 249 | $b = ($b+$n)&63; $n = 64-$n;
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| 250 | " rldicl $ra,$rs,$b,$n";
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| 251 | };
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| 252 | my $vmr = sub {
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| 253 | my ($f,$vx,$vy) = @_;
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| 254 | " vor $vx,$vy,$vy";
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| 255 | };
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| 256 |
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| 257 | # Some ABIs specify vrsave, special-purpose register #256, as reserved
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| 258 | # for system use.
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| 259 | my $no_vrsave = ($flavour =~ /aix|linux64(le|v2)/);
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| 260 | my $mtspr = sub {
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| 261 | my ($f,$idx,$ra) = @_;
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| 262 | if ($idx == 256 && $no_vrsave) {
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| 263 | " or $ra,$ra,$ra";
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| 264 | } else {
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| 265 | " mtspr $idx,$ra";
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| 266 | }
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| 267 | };
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| 268 | my $mfspr = sub {
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| 269 | my ($f,$rd,$idx) = @_;
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| 270 | if ($idx == 256 && $no_vrsave) {
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| 271 | " li $rd,-1";
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| 272 | } else {
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| 273 | " mfspr $rd,$idx";
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| 274 | }
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| 275 | };
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| 276 |
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| 277 | # PowerISA 2.06 stuff
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| 278 | sub vsxmem_op {
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| 279 | my ($f, $vrt, $ra, $rb, $op) = @_;
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| 280 | " .long ".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|($rb<<11)|($op*2+1);
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| 281 | }
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| 282 | # made-up unaligned memory reference AltiVec/VMX instructions
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| 283 | my $lvx_u = sub { vsxmem_op(@_, 844); }; # lxvd2x
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| 284 | my $stvx_u = sub { vsxmem_op(@_, 972); }; # stxvd2x
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| 285 | my $lvdx_u = sub { vsxmem_op(@_, 588); }; # lxsdx
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| 286 | my $stvdx_u = sub { vsxmem_op(@_, 716); }; # stxsdx
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| 287 | my $lvx_4w = sub { vsxmem_op(@_, 780); }; # lxvw4x
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| 288 | my $stvx_4w = sub { vsxmem_op(@_, 908); }; # stxvw4x
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| 289 | my $lvx_splt = sub { vsxmem_op(@_, 332); }; # lxvdsx
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| 290 | # VSX instruction[s] masqueraded as made-up AltiVec/VMX
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| 291 | my $vpermdi = sub { # xxpermdi
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| 292 | my ($f, $vrt, $vra, $vrb, $dm) = @_;
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| 293 | $dm = oct($dm) if ($dm =~ /^0/);
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| 294 | " .long ".sprintf "0x%X",(60<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|($dm<<8)|(10<<3)|7;
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| 295 | };
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| 296 |
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| 297 | # PowerISA 2.07 stuff
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| 298 | sub vcrypto_op {
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| 299 | my ($f, $vrt, $vra, $vrb, $op) = vsr2vr_args(3, @_);
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| 300 | " .long ".sprintf "0x%X",(4<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|$op;
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| 301 | }
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| 302 | sub vfour {
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| 303 | my ($f, $vrt, $vra, $vrb, $vrc, $op) = @_;
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| 304 | " .long ".sprintf "0x%X",(4<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|($vrc<<6)|$op;
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| 305 | };
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| 306 | sub vfour_vsr {
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| 307 | my ($f, $vrt, $vra, $vrb, $vrc, $op) = vsr2vr_args(4, @_);
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| 308 | " .long ".sprintf "0x%X",(4<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|($vrc<<6)|$op;
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| 309 | };
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| 310 |
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| 311 | my $vcipher = sub { vcrypto_op(@_, 1288); };
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| 312 | my $vcipherlast = sub { vcrypto_op(@_, 1289); };
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| 313 | my $vncipher = sub { vcrypto_op(@_, 1352); };
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| 314 | my $vncipherlast= sub { vcrypto_op(@_, 1353); };
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| 315 | my $vsbox = sub { vcrypto_op(@_, 0, 1480); };
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| 316 | my $vshasigmad = sub { my ($st,$six)=splice(@_,-2); vcrypto_op(@_, $st<<4|$six, 1730); };
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| 317 | my $vshasigmaw = sub { my ($st,$six)=splice(@_,-2); vcrypto_op(@_, $st<<4|$six, 1666); };
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| 318 | my $vpmsumb = sub { vcrypto_op(@_, 1032); };
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| 319 | my $vpmsumd = sub { vcrypto_op(@_, 1224); };
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| 320 | my $vpmsubh = sub { vcrypto_op(@_, 1096); };
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| 321 | my $vpmsumw = sub { vcrypto_op(@_, 1160); };
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| 322 | # These are not really crypto, but vcrypto_op template works
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| 323 | my $vaddudm = sub { vcrypto_op(@_, 192); };
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| 324 | my $vadduqm = sub { vcrypto_op(@_, 256); };
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| 325 | my $vmuleuw = sub { vcrypto_op(@_, 648); };
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| 326 | my $vmulouw = sub { vcrypto_op(@_, 136); };
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| 327 | my $vrld = sub { vcrypto_op(@_, 196); };
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| 328 | my $vsld = sub { vcrypto_op(@_, 1476); };
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| 329 | my $vsrd = sub { vcrypto_op(@_, 1732); };
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| 330 | my $vsubudm = sub { vcrypto_op(@_, 1216); };
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| 331 | my $vaddcuq = sub { vcrypto_op(@_, 320); };
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| 332 | my $vaddeuqm = sub { vfour_vsr(@_,60); };
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| 333 | my $vaddecuq = sub { vfour_vsr(@_,61); };
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| 334 | my $vmrgew = sub { vfour_vsr(@_,0,1932); };
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| 335 | my $vmrgow = sub { vfour_vsr(@_,0,1676); };
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| 336 |
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| 337 | my $mtsle = sub {
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| 338 | my ($f, $arg) = @_;
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| 339 | " .long ".sprintf "0x%X",(31<<26)|($arg<<21)|(147*2);
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| 340 | };
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| 341 |
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| 342 | # VSX instructions masqueraded as AltiVec/VMX
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| 343 | my $mtvrd = sub {
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| 344 | my ($f, $vrt, $ra) = @_;
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| 345 | " .long ".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|(179<<1)|1;
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| 346 | };
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| 347 | my $mtvrwz = sub {
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| 348 | my ($f, $vrt, $ra) = @_;
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| 349 | " .long ".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|(243<<1)|1;
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| 350 | };
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| 351 | my $lvwzx_u = sub { vsxmem_op(@_, 12); }; # lxsiwzx
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| 352 | my $stvwx_u = sub { vsxmem_op(@_, 140); }; # stxsiwx
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| 353 |
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| 354 | # PowerISA 3.0 stuff
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| 355 | my $maddhdu = sub { vfour(@_,49); };
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| 356 | my $maddld = sub { vfour(@_,51); };
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| 357 | my $darn = sub {
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| 358 | my ($f, $rt, $l) = @_;
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| 359 | " .long ".sprintf "0x%X",(31<<26)|($rt<<21)|($l<<16)|(755<<1);
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| 360 | };
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| 361 | my $iseleq = sub {
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| 362 | my ($f, $rt, $ra, $rb) = @_;
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| 363 | " .long ".sprintf "0x%X",(31<<26)|($rt<<21)|($ra<<16)|($rb<<11)|(2<<6)|30;
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| 364 | };
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| 365 | # VSX instruction[s] masqueraded as made-up AltiVec/VMX
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| 366 | my $vspltib = sub { # xxspltib
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| 367 | my ($f, $vrt, $imm8) = @_;
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| 368 | $imm8 = oct($imm8) if ($imm8 =~ /^0/);
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| 369 | $imm8 &= 0xff;
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| 370 | " .long ".sprintf "0x%X",(60<<26)|($vrt<<21)|($imm8<<11)|(360<<1)|1;
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| 371 | };
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| 372 |
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| 373 | # PowerISA 3.0B stuff
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| 374 | my $addex = sub {
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| 375 | my ($f, $rt, $ra, $rb, $cy) = @_; # only cy==0 is specified in 3.0B
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| 376 | " .long ".sprintf "0x%X",(31<<26)|($rt<<21)|($ra<<16)|($rb<<11)|($cy<<9)|(170<<1);
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| 377 | };
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| 378 | my $vmsumudm = sub { vfour_vsr(@_, 35); };
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| 379 |
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| 380 | while($line=<>) {
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| 381 |
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| 382 | $line =~ s|[#!;].*$||; # get rid of asm-style comments...
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| 383 | $line =~ s|/\*.*\*/||; # ... and C-style comments...
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| 384 | $line =~ s|^\s+||; # ... and skip whitespaces in beginning...
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| 385 | $line =~ s|\s+$||; # ... and at the end
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| 386 |
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| 387 | {
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| 388 | $line =~ s|\.L(\w+)|L$1|g; # common denominator for Locallabel
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| 389 | $line =~ s|\bL(\w+)|\.L$1|g if ($dotinlocallabels);
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| 390 | }
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| 391 |
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| 392 | {
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| 393 | $line =~ s|(^[\.\w]+)\:\s*||;
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| 394 | my $label = $1;
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| 395 | if ($label) {
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| 396 | my $xlated = ($GLOBALS{$label} or $label);
|
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| 397 | print "$xlated:";
|
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| 398 | if ($flavour =~ /linux.*64(le|v2)/) {
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| 399 | if ($TYPES{$label} =~ /function/) {
|
|---|
| 400 | printf "\n.localentry %s,0\n",$xlated;
|
|---|
| 401 | }
|
|---|
| 402 | }
|
|---|
| 403 | }
|
|---|
| 404 | }
|
|---|
| 405 |
|
|---|
| 406 | {
|
|---|
| 407 | $line =~ s|^\s*(\.?)(\w+)([\.\+\-]?)\s*||;
|
|---|
| 408 | my $c = $1; $c = "\t" if ($c eq "");
|
|---|
| 409 | my $mnemonic = $2;
|
|---|
| 410 | my $f = $3;
|
|---|
| 411 | my $opcode = eval("\$$mnemonic");
|
|---|
| 412 | $line =~ s/\b(c?[rf]|v|vs)([0-9]+)\b/$2/g if ($c ne "." and $flavour !~ /osx/);
|
|---|
| 413 | if (ref($opcode) eq 'CODE') { $line = &$opcode($f,split(/,\s*/,$line)); }
|
|---|
| 414 | elsif ($mnemonic) { $line = $c.$mnemonic.$f."\t".$line; }
|
|---|
| 415 | }
|
|---|
| 416 |
|
|---|
| 417 | print $line if ($line);
|
|---|
| 418 | print "\n";
|
|---|
| 419 | }
|
|---|
| 420 |
|
|---|
| 421 | close STDOUT or die "error closing STDOUT: $!";
|
|---|
