1 #! /usr/bin/env perl 2 # Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. 3 # 4 # Licensed under the OpenSSL license (the "License"). You may not use 5 # this file except in compliance with the License. You can obtain a copy 6 # in the file LICENSE in the source distribution or at 7 # https://www.openssl.org/source/license.html 8 9 use strict; 10 11 my $flavour = shift; 12 my $output = shift; 13 open STDOUT,">$output" || die "can't open $output: $!"; 14 15 $flavour = "linux32" if (!$flavour or $flavour eq "void"); 16 17 my %GLOBALS; 18 my $dotinlocallabels=($flavour=~/linux/)?1:0; 19 20 ################################################################ 21 # directives which need special treatment on different platforms 22 ################################################################ 23 my $arch = sub { 24 if ($flavour =~ /linux/) { ".arch\t".join(',',@_); } 25 else { ""; } 26 }; 27 my $fpu = sub { 28 if ($flavour =~ /linux/) { ".fpu\t".join(',',@_); } 29 else { ""; } 30 }; 31 my $hidden = sub { 32 if ($flavour =~ /ios/) { ".private_extern\t".join(',',@_); } 33 else { ".hidden\t".join(',',@_); } 34 }; 35 my $comm = sub { 36 my @args = split(/,\s*/,shift); 37 my $name = @args[0]; 38 my $global = \$GLOBALS{$name}; 39 my $ret; 40 41 if ($flavour =~ /ios32/) { 42 $ret = ".comm\t_$name,@args[1]\n"; 43 $ret .= ".non_lazy_symbol_pointer\n"; 44 $ret .= "$name:\n"; 45 $ret .= ".indirect_symbol\t_$name\n"; 46 $ret .= ".long\t0"; 47 $name = "_$name"; 48 } else { $ret = ".comm\t".join(',',@args); } 49 50 $$global = $name; 51 $ret; 52 }; 53 my $globl = sub { 54 my $name = shift; 55 my $global = \$GLOBALS{$name}; 56 my $ret; 57 58 SWITCH: for ($flavour) { 59 /ios/ && do { $name = "_$name"; 60 last; 61 }; 62 } 63 64 $ret = ".globl $name\n"; 65 # All symbols in assembly files are hidden. 66 $ret .= &$hidden($name); 67 $$global = $name; 68 $ret; 69 }; 70 my $global = $globl; 71 my $extern = sub { 72 &$globl(@_); 73 return; # return nothing 74 }; 75 my $type = sub { 76 if ($flavour =~ /linux/) { ".type\t".join(',',@_); } 77 elsif ($flavour =~ /ios32/) { if (join(',',@_) =~ /(\w+),%function/) { 78 "#ifdef __thumb2__\n". 79 ".thumb_func $1\n". 80 "#endif"; 81 } 82 } 83 else { ""; } 84 }; 85 my $size = sub { 86 if ($flavour =~ /linux/) { ".size\t".join(',',@_); } 87 else { ""; } 88 }; 89 my $inst = sub { 90 if ($flavour =~ /linux/) { ".inst\t".join(',',@_); } 91 else { ".long\t".join(',',@_); } 92 }; 93 my $asciz = sub { 94 my $line = join(",",@_); 95 if ($line =~ /^"(.*)"$/) 96 { ".byte " . join(",",unpack("C*",$1),0) . "\n.align 2"; } 97 else 98 { ""; } 99 }; 100 101 sub range { 102 my ($r,$sfx,$start,$end) = @_; 103 104 join(",",map("$r$_$sfx",($start..$end))); 105 } 106 107 sub expand_line { 108 my $line = shift; 109 my @ret = (); 110 111 pos($line)=0; 112 113 while ($line =~ m/\G[^@\/\{\"]*/g) { 114 if ($line =~ m/\G(@|\/\/|$)/gc) { 115 last; 116 } 117 elsif ($line =~ m/\G\{/gc) { 118 my $saved_pos = pos($line); 119 $line =~ s/\G([rdqv])([0-9]+)([^\-]*)\-\1([0-9]+)\3/range($1,$3,$2,$4)/e; 120 pos($line) = $saved_pos; 121 $line =~ m/\G[^\}]*\}/g; 122 } 123 elsif ($line =~ m/\G\"/gc) { 124 $line =~ m/\G[^\"]*\"/g; 125 } 126 } 127 128 $line =~ s/\b(\w+)/$GLOBALS{$1} or $1/ge; 129 130 return $line; 131 } 132 133 print "#if defined(__arm__)\n" if ($flavour eq "linux32"); 134 print "#if defined(__aarch64__)\n" if ($flavour eq "linux64"); 135 136 while(my $line=<>) { 137 138 if ($line =~ m/^\s*(#|@|\/\/)/) { print $line; next; } 139 140 $line =~ s|/\*.*\*/||; # get rid of C-style comments... 141 $line =~ s|^\s+||; # ... and skip white spaces in beginning... 142 $line =~ s|\s+$||; # ... and at the end 143 144 { 145 $line =~ s|[\b\.]L(\w{2,})|L$1|g; # common denominator for Locallabel 146 $line =~ s|\bL(\w{2,})|\.L$1|g if ($dotinlocallabels); 147 } 148 149 { 150 $line =~ s|(^[\.\w]+)\:\s*||; 151 my $label = $1; 152 if ($label) { 153 printf "%s:",($GLOBALS{$label} or $label); 154 } 155 } 156 157 if ($line !~ m/^[#@]/) { 158 $line =~ s|^\s*(\.?)(\S+)\s*||; 159 my $c = $1; $c = "\t" if ($c eq ""); 160 my $mnemonic = $2; 161 my $opcode; 162 if ($mnemonic =~ m/([^\.]+)\.([^\.]+)/) { 163 $opcode = eval("\$$1_$2"); 164 } else { 165 $opcode = eval("\$$mnemonic"); 166 } 167 168 my $arg=expand_line($line); 169 170 if (ref($opcode) eq 'CODE') { 171 $line = &$opcode($arg); 172 } elsif ($mnemonic) { 173 $line = $c.$mnemonic; 174 $line.= "\t$arg" if ($arg ne ""); 175 } 176 } 177 178 print $line if ($line); 179 print "\n"; 180 } 181 182 print "#endif\n" if ($flavour eq "linux32" || $flavour eq "linux64"); 183 184 close STDOUT; 185
