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| 1 #!/usr/bin/env perl | |
| 2 | |
| 3 # require 'x86asm.pl'; | |
| 4 # &asm_init(<flavor>,"des-586.pl"[,$i386only]); | |
| 5 # &function_begin("foo"); | |
| 6 # ... | |
| 7 # &function_end("foo"); | |
| 8 # &asm_finish | |
| 9 | |
| 10 $out=(); | |
| 11 $i386=0; | |
| 12 | |
| 13 # AUTOLOAD is this context has quite unpleasant side effect, namely | |
| 14 # that typos in function calls effectively go to assembler output, | |
| 15 # but on the pros side we don't have to implement one subroutine per | |
| 16 # each opcode... | |
| 17 sub ::AUTOLOAD | |
| 18 { my $opcode = $AUTOLOAD; | |
| 19 | |
| 20 die "more than 4 arguments passed to $opcode" if ($#_>3); | |
| 21 | |
| 22 $opcode =~ s/.*:://; | |
| 23 if ($opcode =~ /^push/) { $stack+=4; } | |
| 24 elsif ($opcode =~ /^pop/) { $stack-=4; } | |
| 25 | |
| 26 &generic($opcode,@_) or die "undefined subroutine \&$AUTOLOAD"; | |
| 27 } | |
| 28 | |
| 29 sub ::emit | |
| 30 { my $opcode=shift; | |
| 31 | |
| 32 if ($#_==-1) { push(@out,"\t$opcode\n"); } | |
| 33 else { push(@out,"\t$opcode\t".join(',',@_)."\n"); } | |
| 34 } | |
| 35 | |
| 36 sub ::LB | |
| 37 { $_[0] =~ m/^e?([a-d])x$/o or die "$_[0] does not have a 'low byte'"; | |
| 38 $1."l"; | |
| 39 } | |
| 40 sub ::HB | |
| 41 { $_[0] =~ m/^e?([a-d])x$/o or die "$_[0] does not have a 'high byte'"; | |
| 42 $1."h"; | |
| 43 } | |
| 44 sub ::stack_push{ my $num=$_[0]*4; $stack+=$num; &sub("esp",$num); } | |
| 45 sub ::stack_pop { my $num=$_[0]*4; $stack-=$num; &add("esp",$num); } | |
| 46 sub ::blindpop { &pop($_[0]); $stack+=4; } | |
| 47 sub ::wparam { &DWP($stack+4*$_[0],"esp"); } | |
| 48 sub ::swtmp { &DWP(4*$_[0],"esp"); } | |
| 49 | |
| 50 sub ::bswap | |
| 51 { if ($i386) # emulate bswap for i386 | |
| 52 { &comment("bswap @_"); | |
| 53 &xchg(&HB(@_),&LB(@_)); | |
| 54 &ror (@_,16); | |
| 55 &xchg(&HB(@_),&LB(@_)); | |
| 56 } | |
| 57 else | |
| 58 { &generic("bswap",@_); } | |
| 59 } | |
| 60 # These are made-up opcodes introduced over the years essentially | |
| 61 # by ignorance, just alias them to real ones... | |
| 62 sub ::movb { &mov(@_); } | |
| 63 sub ::xorb { &xor(@_); } | |
| 64 sub ::rotl { &rol(@_); } | |
| 65 sub ::rotr { &ror(@_); } | |
| 66 sub ::exch { &xchg(@_); } | |
| 67 sub ::halt { &hlt; } | |
| 68 sub ::movz { &movzx(@_); } | |
| 69 sub ::pushf { &pushfd; } | |
| 70 sub ::popf { &popfd; } | |
| 71 | |
| 72 # 3 argument instructions | |
| 73 sub ::movq | |
| 74 { my($p1,$p2,$optimize)=@_; | |
| 75 | |
| 76 if ($optimize && $p1=~/^mm[0-7]$/ && $p2=~/^mm[0-7]$/) | |
| 77 # movq between mmx registers can sink Intel CPUs | |
| 78 { &::pshufw($p1,$p2,0xe4); } | |
| 79 else | |
| 80 { &::generic("movq",@_); } | |
| 81 } | |
| 82 | |
| 83 # SSE>2 instructions | |
| 84 my %regrm = ( "eax"=>0, "ecx"=>1, "edx"=>2, "ebx"=>3, | |
| 85 "esp"=>4, "ebp"=>5, "esi"=>6, "edi"=>7 ); | |
| 86 sub ::pextrd | |
| 87 { my($dst,$src,$imm)=@_; | |
| 88 if ("$dst:$src" =~ /(e[a-dsd][ixp]):xmm([0-7])/) | |
| 89 { &::data_byte(0x66,0x0f,0x3a,0x16,0xc0|($2<<3)|$regrm{$1},$imm); } | |
| 90 else | |
| 91 { &::generic("pextrd",@_); } | |
| 92 } | |
| 93 | |
| 94 sub ::pinsrd | |
| 95 { my($dst,$src,$imm)=@_; | |
| 96 if ("$dst:$src" =~ /xmm([0-7]):(e[a-dsd][ixp])/) | |
| 97 { &::data_byte(0x66,0x0f,0x3a,0x22,0xc0|($1<<3)|$regrm{$2},$imm); } | |
| 98 else | |
| 99 { &::generic("pinsrd",@_); } | |
| 100 } | |
| 101 | |
| 102 sub ::pshufb | |
| 103 { my($dst,$src)=@_; | |
| 104 if ("$dst:$src" =~ /xmm([0-7]):xmm([0-7])/) | |
| 105 { &data_byte(0x66,0x0f,0x38,0x00,0xc0|($1<<3)|$2); } | |
| 106 else | |
| 107 { &::generic("pshufb",@_); } | |
| 108 } | |
| 109 | |
| 110 sub ::palignr | |
| 111 { my($dst,$src,$imm)=@_; | |
| 112 if ("$dst:$src" =~ /xmm([0-7]):xmm([0-7])/) | |
| 113 { &::data_byte(0x66,0x0f,0x3a,0x0f,0xc0|($1<<3)|$2,$imm); } | |
| 114 else | |
| 115 { &::generic("palignr",@_); } | |
| 116 } | |
| 117 | |
| 118 sub ::pclmulqdq | |
| 119 { my($dst,$src,$imm)=@_; | |
| 120 if ("$dst:$src" =~ /xmm([0-7]):xmm([0-7])/) | |
| 121 { &::data_byte(0x66,0x0f,0x3a,0x44,0xc0|($1<<3)|$2,$imm); } | |
| 122 else | |
| 123 { &::generic("pclmulqdq",@_); } | |
| 124 } | |
| 125 | |
| 126 sub ::rdrand | |
| 127 { my ($dst)=@_; | |
| 128 if ($dst =~ /(e[a-dsd][ixp])/) | |
| 129 { &::data_byte(0x0f,0xc7,0xf0|$regrm{$dst}); } | |
| 130 else | |
| 131 { &::generic("rdrand",@_); } | |
| 132 } | |
| 133 | |
| 134 # label management | |
| 135 $lbdecor="L"; # local label decoration, set by package | |
| 136 $label="000"; | |
| 137 | |
| 138 sub ::islabel # see is argument is a known label | |
| 139 { my $i; | |
| 140 foreach $i (values %label) { return $i if ($i eq $_[0]); } | |
| 141 $label{$_[0]}; # can be undef | |
| 142 } | |
| 143 | |
| 144 sub ::label # instantiate a function-scope label | |
| 145 { if (!defined($label{$_[0]})) | |
| 146 { $label{$_[0]}="${lbdecor}${label}${_[0]}"; $label++; } | |
| 147 $label{$_[0]}; | |
| 148 } | |
| 149 | |
| 150 sub ::LABEL # instantiate a file-scope label | |
| 151 { $label{$_[0]}=$_[1] if (!defined($label{$_[0]})); | |
| 152 $label{$_[0]}; | |
| 153 } | |
| 154 | |
| 155 sub ::static_label { &::LABEL($_[0],$lbdecor.$_[0]); } | |
| 156 | |
| 157 sub ::set_label_B { push(@out,"@_:\n"); } | |
| 158 sub ::set_label | |
| 159 { my $label=&::label($_[0]); | |
| 160 &::align($_[1]) if ($_[1]>1); | |
| 161 &::set_label_B($label); | |
| 162 $label; | |
| 163 } | |
| 164 | |
| 165 sub ::wipe_labels # wipes function-scope labels | |
| 166 { foreach $i (keys %label) | |
| 167 { delete $label{$i} if ($label{$i} =~ /^\Q${lbdecor}\E[0-9]{3}/); } | |
| 168 } | |
| 169 | |
| 170 # subroutine management | |
| 171 sub ::function_begin | |
| 172 { &function_begin_B(@_); | |
| 173 $stack=4; | |
| 174 &push("ebp"); | |
| 175 &push("ebx"); | |
| 176 &push("esi"); | |
| 177 &push("edi"); | |
| 178 } | |
| 179 | |
| 180 sub ::function_end | |
| 181 { &pop("edi"); | |
| 182 &pop("esi"); | |
| 183 &pop("ebx"); | |
| 184 &pop("ebp"); | |
| 185 &ret(); | |
| 186 &function_end_B(@_); | |
| 187 $stack=0; | |
| 188 &wipe_labels(); | |
| 189 } | |
| 190 | |
| 191 sub ::function_end_A | |
| 192 { &pop("edi"); | |
| 193 &pop("esi"); | |
| 194 &pop("ebx"); | |
| 195 &pop("ebp"); | |
| 196 &ret(); | |
| 197 $stack+=16; # readjust esp as if we didn't pop anything | |
| 198 } | |
| 199 | |
| 200 sub ::asciz | |
| 201 { my @str=unpack("C*",shift); | |
| 202 push @str,0; | |
| 203 while ($#str>15) { | |
| 204 &data_byte(@str[0..15]); | |
| 205 foreach (0..15) { shift @str; } | |
| 206 } | |
| 207 &data_byte(@str) if (@str); | |
| 208 } | |
| 209 | |
| 210 sub ::asm_finish | |
| 211 { &file_end(); | |
| 212 print @out; | |
| 213 } | |
| 214 | |
| 215 sub ::asm_init | |
| 216 { my ($type,$fn,$cpu)=@_; | |
| 217 | |
| 218 $filename=$fn; | |
| 219 $i386=$cpu; | |
| 220 | |
| 221 $elf=$cpp=$coff=$aout=$macosx=$win32=$netware=$mwerks=$android=0; | |
| 222 if (($type eq "elf")) | |
| 223 { $elf=1; require "x86gas.pl"; } | |
| 224 elsif (($type eq "a\.out")) | |
| 225 { $aout=1; require "x86gas.pl"; } | |
| 226 elsif (($type eq "coff" or $type eq "gaswin")) | |
| 227 { $coff=1; require "x86gas.pl"; } | |
| 228 elsif (($type eq "win32n")) | |
| 229 { $win32=1; require "x86nasm.pl"; } | |
| 230 elsif (($type eq "nw-nasm")) | |
| 231 { $netware=1; require "x86nasm.pl"; } | |
| 232 #elsif (($type eq "nw-mwasm")) | |
| 233 #{ $netware=1; $mwerks=1; require "x86nasm.pl"; } | |
| 234 elsif (($type eq "win32")) | |
| 235 { $win32=1; require "x86masm.pl"; } | |
| 236 elsif (($type eq "macosx")) | |
| 237 { $aout=1; $macosx=1; require "x86gas.pl"; } | |
| 238 elsif (($type eq "android")) | |
| 239 { $elf=1; $android=1; require "x86gas.pl"; } | |
| 240 else | |
| 241 { print STDERR <<"EOF"; | |
| 242 Pick one target type from | |
| 243 elf - Linux, FreeBSD, Solaris x86, etc. | |
| 244 a.out - DJGPP, elder OpenBSD, etc. | |
| 245 coff - GAS/COFF such as Win32 targets | |
| 246 win32n - Windows 95/Windows NT NASM format | |
| 247 nw-nasm - NetWare NASM format | |
| 248 macosx - Mac OS X | |
| 249 EOF | |
| 250 exit(1); | |
| 251 } | |
| 252 | |
| 253 $pic=0; | |
| 254 for (@ARGV) { $pic=1 if (/\-[fK]PIC/i); } | |
| 255 | |
| 256 $filename =~ s/\.pl$//; | |
| 257 &file($filename); | |
| 258 } | |
| 259 | |
| 260 1; | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master