7 $align=($main::aout)?"4":"16";
8 $under=($main::aout)?"_":"";
9 $com_start=($main::sol)?"/":"#";
11 sub main::asm_init_output { @out=(); }
12 sub main::asm_get_output { return(@out); }
13 sub main::get_labels { return(@labels); }
14 sub main::external_label { push(@labels,@_); }
44 %regs=( 'eax', '%eax',
69 (defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
75 (defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
81 local($addr,$reg1,$reg2,$idx)=@_;
84 $addr =~ s/(^|[+ \t])([A-Za-z_]+[A-Za-z0-9_]+)($|[+ \t])/$1$under$2$3/;
85 $reg1="$regs{$reg1}" if defined($regs{$reg1});
86 $reg2="$regs{$reg2}" if defined($regs{$reg2});
87 $ret.=$addr if ($addr ne "") && ($addr ne 0);
91 { $ret.="($reg1,$reg2,$idx)"; }
93 { $ret.="($reg1,$reg2)"; }
102 return(&main::DWP(@_));
117 # local($addr,$reg1,$reg2,$idx)=@_;
121 # $addr =~ s/(^|[+ \t])([A-Za-z_]+)($|[+ \t])/$1$under$2$3/;
122 # $reg1="$regs{$reg1}" if defined($regs{$reg1});
123 # $reg2="$regs{$reg2}" if defined($regs{$reg2});
124 # $ret.=$addr if ($addr ne "") && ($addr ne 0);
126 # { $ret.="($reg1,$reg2,$idx)"; }
128 # { $ret.="($reg1)" }
132 sub main::mov { &out2("movl",@_); }
133 sub main::movb { &out2("movb",@_); }
134 sub main::and { &out2("andl",@_); }
135 sub main::or { &out2("orl",@_); }
136 sub main::shl { &out2("sall",@_); }
137 sub main::shr { &out2("shrl",@_); }
138 sub main::xor { &out2("xorl",@_); }
139 sub main::xorb { &out2("xorb",@_); }
140 sub main::add { &out2("addl",@_); }
141 sub main::adc { &out2("adcl",@_); }
142 sub main::sub { &out2("subl",@_); }
143 sub main::rotl { &out2("roll",@_); }
144 sub main::rotr { &out2("rorl",@_); }
145 sub main::exch { &out2("xchg",@_); }
146 sub main::cmp { &out2("cmpl",@_); }
147 sub main::lea { &out2("leal",@_); }
148 sub main::mul { &out1("mull",@_); }
149 sub main::div { &out1("divl",@_); }
150 sub main::jmp { &out1("jmp",@_); }
151 sub main::jmp_ptr { &out1p("jmp",@_); }
152 sub main::je { &out1("je",@_); }
153 sub main::jle { &out1("jle",@_); }
154 sub main::jne { &out1("jne",@_); }
155 sub main::jnz { &out1("jnz",@_); }
156 sub main::jz { &out1("jz",@_); }
157 sub main::jge { &out1("jge",@_); }
158 sub main::jl { &out1("jl",@_); }
159 sub main::jb { &out1("jb",@_); }
160 sub main::jc { &out1("jc",@_); }
161 sub main::jnc { &out1("jnc",@_); }
162 sub main::jno { &out1("jno",@_); }
163 sub main::dec { &out1("decl",@_); }
164 sub main::inc { &out1("incl",@_); }
165 sub main::push { &out1("pushl",@_); $stack+=4; }
166 sub main::pop { &out1("popl",@_); $stack-=4; }
167 sub main::not { &out1("notl",@_); }
168 sub main::call { &out1("call",$under.$_[0]); }
169 sub main::ret { &out0("ret"); }
170 sub main::nop { &out0("nop"); }
172 # The bswapl instruction is new for the 486. Emulate if i386.
177 &main::comment("bswapl @_");
178 &main::exch(main::HB(@_),main::LB(@_));
180 &main::exch(main::HB(@_),main::LB(@_));
190 local($name,$p1,$p2)=@_;
192 local(%special)=( "roll",0xD1C0,"rorl",0xD1C8,
193 "rcll",0xD1D0,"rcrl",0xD1D8,
194 "shll",0xD1E0,"shrl",0xD1E8,
197 if ((defined($special{$name})) && defined($regs{$p1}) && ($p2 == 1))
199 $op=$special{$name}|$reg_val{$p1};
200 $tmp1=sprintf(".byte %d\n",($op>>8)&0xff);
201 $tmp2=sprintf(".byte %d\t",$op &0xff);
207 &main::comment("$name $p2 $p1");
211 push(@out,"\t$name\t");
216 $tmp1=sprintf("\t" x $ll);
218 push(@out,&conv($p1)."\n");
225 local(%special)=("bswapl",0x0FC8);
227 if ((defined($special{$name})) && defined($regs{$p1}))
229 $op=$special{$name}|$reg_val{$p1};
230 $tmp1=sprintf(".byte %d\n",($op>>8)&0xff);
231 $tmp2=sprintf(".byte %d\t",$op &0xff);
237 &main::comment("$name $p2 $p1");
241 push(@out,"\t$name\t".&conv($p1)."\n");
249 push(@out,"\t$name\t*".&conv($p1)."\n");
254 push(@out,"\t$_[0]\n");
261 # $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
263 $p=$regs{$p} if (defined($regs{$p}));
265 $p =~ s/^(-{0,1}[0-9A-Fa-f]+)$/\$$1/;
266 $p =~ s/^(0x[0-9A-Fa-f]+)$/\$$1/;
282 sub main::function_begin
286 &main::external_label($func);
296 { $tmp=push(@out,"\tTYPE($func,\@function)\n"); }
297 elsif ($main::gaswin)
298 { $tmp=push(@out,"\t.def\t$func;\t.scl\t2;\t.type\t32;\t.endef\n"); }
299 else { $tmp=push(@out,"\t.type\t$func,\@function\n"); }
300 push(@out,"$func:\n");
312 sub main::function_begin_B
314 local($func,$extra)=@_;
316 &main::external_label($func);
326 { push(@out,"\tTYPE($func,\@function)\n"); }
327 elsif ($main::gaswin)
328 { $tmp=push(@out,"\t.def\t$func;\t.scl\t2;\t.type\t32;\t.endef\n"); }
329 else { push(@out,"\t.type $func,\@function\n"); }
330 push(@out,"$func:\n");
334 sub main::function_end
350 { push(@out,"\tSIZE($func,.${func}_end-$func)\n"); }
351 elsif ($main::gaswin)
352 { $tmp=push(@out,"\t.align 4\n"); }
353 else { push(@out,"\t.size\t$func,.${func}_end-$func\n"); }
354 push(@out,".ident \"$func\"\n");
359 sub main::function_end_A
373 sub main::function_end_B
379 push(@out,".L_${func}_end:\n");
381 { push(@out,"\tSIZE($func,.L_${func}_end-$func)\n"); }
382 elsif ($main::gaswin)
383 { push(@out,"\t.align 4\n"); }
384 else { push(@out,"\t.size\t$func,.L_${func}_end-$func\n"); }
385 push(@out,".ident \"desasm.pl\"\n");
394 return(&main::DWP($stack+$num*4,"esp","",0));
401 &main::sub("esp",$num*4);
408 &main::add("esp",$num*4);
413 return(&main::DWP($_[0]*4,"esp","",0));
416 # Should use swtmp, which is above esp. Linix can trash the stack above esp
421 # return(&main::DWP(-($num+1)*4,"esp","",0));
431 { push(@out,"\t$com_start $_ $com_end\n"); }
437 if (!defined($label{$_[0]}))
439 $label{$_[0]}=".${label}${_[0]}";
442 return($label{$_[0]});
447 if (!defined($label{$_[0]}))
449 $label{$_[0]}=".${label}${_[0]}";
452 push(@out,".align $align\n") if ($_[1] != 0);
453 push(@out,"$label{$_[0]}:\n");
462 push(@out,"\t.long $_[0]\n");
466 ## Additional functions required for MMX and other ops
468 sub main::testb { &out2('testb', @_) }
469 sub main::movzx { &out2('movzx', @_) }
470 sub main::movd { &out2('movd', @_) }
471 sub main::emms { &out0('emms', @_) }