7 $::lbdecor=$::aout?"L":".L"; # local label decoration
8 $nmdecor=($::aout or $::coff)?"_":""; # external name decoration
13 $align=log($align)/log(2) if ($::aout);
14 $com_start="#" if ($::aout or $::coff);
18 if ($reg =~ m/^%e/o) { "l"; }
19 elsif ($reg =~ m/^%[a-d][hl]$/o) { "b"; }
20 elsif ($reg =~ m/^%[xm]/o) { undef; }
25 # expand opcode with size suffix;
26 # prefix numeric constants with $;
28 { my($opcode,@arg)=@_;
29 my($suffix,$dst,$src);
34 { s/^(\*?)(e?[a-dsixphl]{2})$/$1%$2/o; # gp registers
35 s/^([xy]?mm[0-7])$/%$1/o; # xmm/mmx registers
36 s/^(\-?[0-9]+)$/\$$1/o; # constants
37 s/^(\-?0x[0-9a-f]+)$/\$$1/o; # constants
40 $dst = $arg[$#arg] if ($#arg>=0);
41 $src = $arg[$#arg-1] if ($#arg>=1);
42 if ($dst =~ m/^%/o) { $suffix=&opsize($dst); }
43 elsif ($src =~ m/^%/o) { $suffix=&opsize($src); }
45 undef $suffix if ($dst =~ m/^%[xm]/o || $src =~ m/^%[xm]/o);
47 if ($#_==0) { &::emit($opcode); }
48 elsif ($opcode =~ m/^j/o && $#_==1) { &::emit($opcode,@arg); }
49 elsif ($opcode eq "call" && $#_==1) { &::emit($opcode,@arg); }
50 elsif ($opcode =~ m/^set/&& $#_==1) { &::emit($opcode,@arg); }
51 else { &::emit($opcode.$suffix,@arg);}
56 # opcodes not covered by ::generic above, mostly inconsistent namings...
58 sub ::movzx { &::movzb(@_); }
59 sub ::pushfd { &::pushfl; }
60 sub ::popfd { &::popfl; }
61 sub ::cpuid { &::emit(".byte\t0x0f,0xa2"); }
62 sub ::rdtsc { &::emit(".byte\t0x0f,0x31"); }
64 sub ::call { &::emit("call",(&::islabel($_[0]) or "$nmdecor$_[0]")); }
65 sub ::call_ptr { &::generic("call","*$_[0]"); }
66 sub ::jmp_ptr { &::generic("jmp","*$_[0]"); }
68 *::bswap = sub { &::emit("bswap","%$_[0]"); } if (!$::i386);
71 { my($addr,$reg1,$reg2,$idx)=@_;
75 # prepend global references with optional underscore
76 $addr =~ s/^([^\+\-0-9][^\+\-]*)/&::islabel($1) or "$nmdecor$1"/ige;
78 $reg1 = "%$reg1" if ($reg1);
79 $reg2 = "%$reg2" if ($reg2);
81 $ret .= $addr if (($addr ne "") && ($addr ne 0));
85 $ret .= "($reg1,$reg2,$idx)";
88 { $ret .= "($reg1)"; }
92 sub ::QWP { &::DWP(@_); }
93 sub ::BP { &::DWP(@_); }
94 sub ::WP { &::DWP(@_); }
99 { push(@out,".file\t\"$_[0].s\"\n.text\n"); }
101 sub ::function_begin_B
103 my $global=($func !~ /^_/);
104 my $begin="${::lbdecor}_${func}_begin";
106 &::LABEL($func,$global?"$begin":"$nmdecor$func");
107 $func=$nmdecor.$func;
109 push(@out,".globl\t$func\n") if ($global);
111 { push(@out,".def\t$func;\t.scl\t".(3-$global).";\t.type\t32;\t.endef\n"); }
112 elsif (($::aout and !$::pic) or $::macosx)
115 { push(@out,".type $func,\@function\n"); }
116 push(@out,".align\t$align\n");
117 push(@out,"$func:\n");
118 push(@out,"$begin:\n") if ($global);
124 push(@out,".size\t$nmdecor$func,.-".&::LABEL($func)."\n") if ($::elf);
131 if (!defined($com_start) or $::elf)
132 { # Regarding $::elf above...
133 # GNU and SVR4 as'es use different comment delimiters,
134 push(@out,"\n"); # so we just skip ELF comments...
142 { push(@out,"\t$com_start $_ $com_end\n"); }
147 { foreach(@_) { &::LABEL($_,$nmdecor.$_); } }
150 { push(@out,".globl\t".&::LABEL($_[0],$nmdecor.$_[0])."\n"); }
153 { if (grep {/\b${nmdecor}OPENSSL_ia32cap_P\b/i} @out) {
154 my $tmp=".comm\t${nmdecor}OPENSSL_ia32cap_P,8";
155 if ($::elf) { push (@out,"$tmp,4\n"); }
156 else { push (@out,"$tmp\n"); }
160 { push(@out,".section __IMPORT,__pointers,non_lazy_symbol_pointers\n");
161 foreach $i (keys %non_lazy_ptr)
162 { push(@out,"$non_lazy_ptr{$i}:\n.indirect_symbol\t$i\n.long\t0\n"); }
165 push(@out,$initseg) if ($initseg);
168 sub ::data_byte { push(@out,".byte\t".join(',',@_)."\n"); }
169 sub ::data_short{ push(@out,".value\t".join(',',@_)."\n"); }
170 sub ::data_word { push(@out,".long\t".join(',',@_)."\n"); }
173 { my $val=$_[0],$p2,$i;
175 { for ($p2=0;$val!=0;$val>>=1) { $p2++; }
179 push(@out,".align\t$val\n");
183 { my($dst,$sym,$base,$reflabel)=@_;
185 if ($::pic && ($::elf || $::aout))
186 { if (!defined($base))
187 { &::call(&::label("PIC_me_up"));
188 &::set_label("PIC_me_up");
191 $reflabel=&::label("PIC_me_up");
194 { my $indirect=&::static_label("$nmdecor$sym\$non_lazy_ptr");
195 &::mov($dst,&::DWP("$indirect-$reflabel",$base));
196 $non_lazy_ptr{"$nmdecor$sym"}=$indirect;
199 { &::lea($dst,&::DWP("_GLOBAL_OFFSET_TABLE_+[.-$reflabel]",
201 &::mov($dst,&::DWP("$sym\@GOT",$dst));
205 { &::lea($dst,&::DWP($sym)); }
209 { my $f=$nmdecor.shift;
221 { $initseg.=<<___; # applies to both Cygwin and Mingw
234 { my $ctor="${nmdecor}_GLOBAL_\$I\$$f";
236 $initseg.=".type $ctor,\@function\n" if ($::pic);
237 $initseg.=<<___; # OpenBSD way...
247 { push(@out,".data\n"); }