2 # Copyright 2007-2016 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
14 $::lbdecor=$::aout?"L":".L"; # local label decoration
15 $nmdecor=($::aout or $::coff)?"_":""; # external name decoration
20 $align=log($align)/log(2) if ($::aout);
21 $com_start="#" if ($::aout or $::coff);
25 if ($reg =~ m/^%e/o) { "l"; }
26 elsif ($reg =~ m/^%[a-d][hl]$/o) { "b"; }
27 elsif ($reg =~ m/^%[yxm]/o) { undef; }
32 # expand opcode with size suffix;
33 # prefix numeric constants with $;
35 { my($opcode,@arg)=@_;
36 my($suffix,$dst,$src);
41 { s/^(\*?)(e?[a-dsixphl]{2})$/$1%$2/o; # gp registers
42 s/^([xy]?mm[0-7])$/%$1/o; # xmm/mmx registers
43 s/^(\-?[0-9]+)$/\$$1/o; # constants
44 s/^(\-?0x[0-9a-f]+)$/\$$1/o; # constants
47 $dst = $arg[$#arg] if ($#arg>=0);
48 $src = $arg[$#arg-1] if ($#arg>=1);
49 if ($dst =~ m/^%/o) { $suffix=&opsize($dst); }
50 elsif ($src =~ m/^%/o) { $suffix=&opsize($src); }
52 undef $suffix if ($dst =~ m/^%[xm]/o || $src =~ m/^%[xm]/o);
54 if ($#_==0) { &::emit($opcode); }
55 elsif ($#_==1 && $opcode =~ m/^(call|clflush|j|loop|set)/o)
56 { &::emit($opcode,@arg); }
57 else { &::emit($opcode.$suffix,@arg);}
62 # opcodes not covered by ::generic above, mostly inconsistent namings...
64 sub ::movzx { &::movzb(@_); }
65 sub ::pushfd { &::pushfl; }
66 sub ::popfd { &::popfl; }
67 sub ::cpuid { &::emit(".byte\t0x0f,0xa2"); }
68 sub ::rdtsc { &::emit(".byte\t0x0f,0x31"); }
70 sub ::call { &::emit("call",(&::islabel($_[0]) or "$nmdecor$_[0]")); }
71 sub ::call_ptr { &::generic("call","*$_[0]"); }
72 sub ::jmp_ptr { &::generic("jmp","*$_[0]"); }
74 *::bswap = sub { &::emit("bswap","%$_[0]"); } if (!$::i386);
77 { my($addr,$reg1,$reg2,$idx)=@_;
80 if (!defined($idx) && 1*$reg2) { $idx=$reg2; $reg2=$reg1; undef $reg1; }
83 # prepend global references with optional underscore
84 $addr =~ s/^([^\+\-0-9][^\+\-]*)/&::islabel($1) or "$nmdecor$1"/ige;
86 $reg1 = "%$reg1" if ($reg1);
87 $reg2 = "%$reg2" if ($reg2);
89 $ret .= $addr if (($addr ne "") && ($addr ne 0));
93 $ret .= "($reg1,$reg2,$idx)";
96 { $ret .= "($reg1)"; }
100 sub ::QWP { &::DWP(@_); }
101 sub ::BP { &::DWP(@_); }
102 sub ::WP { &::DWP(@_); }
107 { push(@out,".text\n"); }
109 sub ::function_begin_B
111 my $global=($func !~ /^_/);
112 my $begin="${::lbdecor}_${func}_begin";
114 &::LABEL($func,$global?"$begin":"$nmdecor$func");
115 $func=$nmdecor.$func;
117 push(@out,".globl\t$func\n") if ($global);
119 { push(@out,".def\t$func;\t.scl\t".(3-$global).";\t.type\t32;\t.endef\n"); }
120 elsif (($::aout and !$::pic) or $::macosx)
123 { push(@out,".type $func,\@function\n"); }
124 push(@out,".align\t$align\n");
125 push(@out,"$func:\n");
126 push(@out,"$begin:\n") if ($global);
132 push(@out,".size\t$nmdecor$func,.-".&::LABEL($func)."\n") if ($::elf);
139 if (!defined($com_start) or $::elf)
140 { # Regarding $::elf above...
141 # GNU and SVR4 as'es use different comment delimiters,
142 push(@out,"\n"); # so we just skip ELF comments...
150 { push(@out,"\t$com_start $_ $com_end\n"); }
155 { foreach(@_) { &::LABEL($_,$nmdecor.$_); } }
158 { push(@out,".globl\t".&::LABEL($_[0],$nmdecor.$_[0])."\n"); }
163 { push(@out,".section __IMPORT,__pointers,non_lazy_symbol_pointers\n");
164 foreach $i (keys %non_lazy_ptr)
165 { push(@out,"$non_lazy_ptr{$i}:\n.indirect_symbol\t$i\n.long\t0\n"); }
168 if (grep {/\b${nmdecor}OPENSSL_ia32cap_P\b/i} @out) {
169 my $tmp=".comm\t${nmdecor}OPENSSL_ia32cap_P,16";
170 if ($::macosx) { push (@out,"$tmp,2\n"); }
171 elsif ($::elf) { push (@out,"$tmp,4\n"); }
172 else { push (@out,"$tmp\n"); }
174 push(@out,$initseg) if ($initseg);
177 sub ::data_byte { push(@out,".byte\t".join(',',@_)."\n"); }
178 sub ::data_short{ push(@out,".value\t".join(',',@_)."\n"); }
179 sub ::data_word { push(@out,".long\t".join(',',@_)."\n"); }
184 { $val=int(log($val)/log(2));
187 push(@out,".align\t$val\n");
191 { my($dst,$sym,$base,$reflabel)=@_;
193 if (($::pic && ($::elf || $::aout)) || $::macosx)
194 { if (!defined($base))
195 { &::call(&::label("PIC_me_up"));
196 &::set_label("PIC_me_up");
199 $reflabel=&::label("PIC_me_up");
202 { my $indirect=&::static_label("$nmdecor$sym\$non_lazy_ptr");
203 &::mov($dst,&::DWP("$indirect-$reflabel",$base));
204 $non_lazy_ptr{"$nmdecor$sym"}=$indirect;
206 elsif ($sym eq "OPENSSL_ia32cap_P" && $::elf>0)
207 { &::lea($dst,&::DWP("$sym-$reflabel",$base)); }
209 { &::lea($dst,&::DWP("_GLOBAL_OFFSET_TABLE_+[.-$reflabel]",
211 &::mov($dst,&::DWP("$sym\@GOT",$dst));
215 { &::lea($dst,&::DWP($sym)); }
219 { my $f=$nmdecor.shift;
235 { $initseg.=<<___; # applies to both Cygwin and Mingw
248 { my $ctor="${nmdecor}_GLOBAL_\$I\$$f";
250 $initseg.=".type $ctor,\@function\n" if ($::pic);
251 $initseg.=<<___; # OpenBSD way...
261 { push(@out,".data\n"); }
263 *::hidden = sub { push(@out,".hidden\t$nmdecor$_[0]\n"); } if ($::elf);