2 # Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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
10 # require 'x86asm.pl';
11 # &asm_init(<flavor>,"des-586.pl"[,$i386only]);
12 # &function_begin("foo");
14 # &function_end("foo");
20 # AUTOLOAD is this context has quite unpleasant side effect, namely
21 # that typos in function calls effectively go to assembler output,
22 # but on the pros side we don't have to implement one subroutine per
25 { my $opcode = $AUTOLOAD;
27 die "more than 4 arguments passed to $opcode" if ($#_>3);
30 if ($opcode =~ /^push/) { $stack+=4; }
31 elsif ($opcode =~ /^pop/) { $stack-=4; }
33 &generic($opcode,@_) or die "undefined subroutine \&$AUTOLOAD";
39 if ($#_==-1) { push(@out,"\t$opcode\n"); }
40 else { push(@out,"\t$opcode\t".join(',',@_)."\n"); }
44 { $_[0] =~ m/^e?([a-d])x$/o or die "$_[0] does not have a 'low byte'";
48 { $_[0] =~ m/^e?([a-d])x$/o or die "$_[0] does not have a 'high byte'";
51 sub ::stack_push{ my $num=$_[0]*4; $stack+=$num; &sub("esp",$num); }
52 sub ::stack_pop { my $num=$_[0]*4; $stack-=$num; &add("esp",$num); }
53 sub ::blindpop { &pop($_[0]); $stack+=4; }
54 sub ::wparam { &DWP($stack+4*$_[0],"esp"); }
55 sub ::swtmp { &DWP(4*$_[0],"esp"); }
58 { if ($i386) # emulate bswap for i386
59 { &comment("bswap @_");
60 &xchg(&HB(@_),&LB(@_));
62 &xchg(&HB(@_),&LB(@_));
65 { &generic("bswap",@_); }
67 # These are made-up opcodes introduced over the years essentially
68 # by ignorance, just alias them to real ones...
69 sub ::movb { &mov(@_); }
70 sub ::xorb { &xor(@_); }
71 sub ::rotl { &rol(@_); }
72 sub ::rotr { &ror(@_); }
73 sub ::exch { &xchg(@_); }
75 sub ::movz { &movzx(@_); }
76 sub ::pushf { &pushfd; }
77 sub ::popf { &popfd; }
79 # 3 argument instructions
81 { my($p1,$p2,$optimize)=@_;
83 if ($optimize && $p1=~/^mm[0-7]$/ && $p2=~/^mm[0-7]$/)
84 # movq between mmx registers can sink Intel CPUs
85 { &::pshufw($p1,$p2,0xe4); }
87 { &::generic("movq",@_); }
91 my %regrm = ( "eax"=>0, "ecx"=>1, "edx"=>2, "ebx"=>3,
92 "esp"=>4, "ebp"=>5, "esi"=>6, "edi"=>7 );
94 { my($dst,$src,$imm)=@_;
95 if ("$dst:$src" =~ /(e[a-dsd][ixp]):xmm([0-7])/)
96 { &::data_byte(0x66,0x0f,0x3a,0x16,0xc0|($2<<3)|$regrm{$1},$imm); }
98 { &::generic("pextrd",@_); }
102 { my($dst,$src,$imm)=@_;
103 if ("$dst:$src" =~ /xmm([0-7]):(e[a-dsd][ixp])/)
104 { &::data_byte(0x66,0x0f,0x3a,0x22,0xc0|($1<<3)|$regrm{$2},$imm); }
106 { &::generic("pinsrd",@_); }
111 if ("$dst:$src" =~ /xmm([0-7]):xmm([0-7])/)
112 { &data_byte(0x66,0x0f,0x38,0x00,0xc0|($1<<3)|$2); }
114 { &::generic("pshufb",@_); }
118 { my($dst,$src,$imm)=@_;
119 if ("$dst:$src" =~ /xmm([0-7]):xmm([0-7])/)
120 { &::data_byte(0x66,0x0f,0x3a,0x0f,0xc0|($1<<3)|$2,$imm); }
122 { &::generic("palignr",@_); }
126 { my($dst,$src,$imm)=@_;
127 if ("$dst:$src" =~ /xmm([0-7]):xmm([0-7])/)
128 { &::data_byte(0x66,0x0f,0x3a,0x44,0xc0|($1<<3)|$2,$imm); }
130 { &::generic("pclmulqdq",@_); }
135 if ($dst =~ /(e[a-dsd][ixp])/)
136 { &::data_byte(0x0f,0xc7,0xf0|$regrm{$dst}); }
138 { &::generic("rdrand",@_); }
143 if ($dst =~ /(e[a-dsd][ixp])/)
144 { &::data_byte(0x0f,0xc7,0xf8|$regrm{$dst}); }
146 { &::generic("rdrand",@_); }
151 my ($dst,$src1,$src2,$rxb)=@_;
154 $rxb&=~(0x04<<5) if($dst>=8);
155 $rxb&=~(0x01<<5) if($src1>=8);
156 $rxb&=~(0x02<<5) if($src2>=8);
161 { my $args=join(',',@_);
162 if ($args =~ /xmm([0-7]),xmm([0-7]),([x0-9a-f]+)/)
164 rxb(\@opcode,$1,$2,-1,0x08);
165 push @opcode,0x78,0xc2;
166 push @opcode,0xc0|($2&7)|(($1&7)<<3); # ModR/M
168 push @opcode,$c=~/^0/?oct($c):$c;
169 &::data_byte(@opcode);
172 { &::generic("vprotd",@_); }
177 &::data_byte(0xf3,0x0f,0x1e,0xfb);
181 $lbdecor="L"; # local label decoration, set by package
184 sub ::islabel # see is argument is a known label
186 foreach $i (values %label) { return $i if ($i eq $_[0]); }
187 $label{$_[0]}; # can be undef
190 sub ::label # instantiate a function-scope label
191 { if (!defined($label{$_[0]}))
192 { $label{$_[0]}="${lbdecor}${label}${_[0]}"; $label++; }
196 sub ::LABEL # instantiate a file-scope label
197 { $label{$_[0]}=$_[1] if (!defined($label{$_[0]}));
201 sub ::static_label { &::LABEL($_[0],$lbdecor.$_[0]); }
203 sub ::set_label_B { push(@out,"@_:\n"); }
205 { my $label=&::label($_[0]);
206 &::align($_[1]) if ($_[1]>1);
207 &::set_label_B($label);
211 sub ::wipe_labels # wipes function-scope labels
212 { foreach $i (keys %label)
213 { delete $label{$i} if ($label{$i} =~ /^\Q${lbdecor}\E[0-9]{3}/); }
216 # subroutine management
218 { &function_begin_B(@_);
243 $stack+=16; # readjust esp as if we didn't pop anything
247 { my @str=unpack("C*",shift);
250 &data_byte(@str[0..15]);
251 foreach (0..15) { shift @str; }
253 &data_byte(@str) if (@str);
262 { my ($type,$fn,$cpu)=@_;
267 $elf=$cpp=$coff=$aout=$macosx=$win32=$netware=$mwerks=$android=0;
268 if (($type eq "elf"))
269 { $elf=1; require "x86gas.pl"; }
270 elsif (($type eq "elf-1"))
271 { $elf=-1; require "x86gas.pl"; }
272 elsif (($type eq "a\.out"))
273 { $aout=1; require "x86gas.pl"; }
274 elsif (($type eq "coff" or $type eq "gaswin"))
275 { $coff=1; require "x86gas.pl"; }
276 elsif (($type eq "win32n"))
277 { $win32=1; require "x86nasm.pl"; }
278 elsif (($type eq "nw-nasm"))
279 { $netware=1; require "x86nasm.pl"; }
280 #elsif (($type eq "nw-mwasm"))
281 #{ $netware=1; $mwerks=1; require "x86nasm.pl"; }
282 elsif (($type eq "win32"))
283 { $win32=1; require "x86masm.pl"; }
284 elsif (($type eq "macosx"))
285 { $aout=1; $macosx=1; require "x86gas.pl"; }
286 elsif (($type eq "android"))
287 { $elf=1; $android=1; require "x86gas.pl"; }
289 { print STDERR <<"EOF";
290 Pick one target type from
291 elf - Linux, FreeBSD, Solaris x86, etc.
292 a.out - DJGPP, elder OpenBSD, etc.
293 coff - GAS/COFF such as Win32 targets
294 win32n - Windows 95/Windows NT NASM format
295 nw-nasm - NetWare NASM format
302 for (@ARGV) { $pic=1 if (/\-[fK]PIC/i); }
304 $filename =~ s/\.pl$//;