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',
67
(defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
73
(defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
79
local($addr,$reg1,$reg2,$idx)=@_;
82
$addr =~ s/(^|[+ \t])([A-Za-z_]+)($|[+ \t])/$1$under$2$3/;
83
$reg1="$regs{$reg1}" if defined($regs{$reg1});
84
$reg2="$regs{$reg2}" if defined($regs{$reg2});
85
$ret.=$addr if ($addr ne "") && ($addr ne 0);
87
{ $ret.="($reg1,$reg2,$idx)"; }
95
return(&main'DWP(@_));
100
# local($addr,$reg1,$reg2,$idx)=@_;
104
# $addr =~ s/(^|[+ \t])([A-Za-z_]+)($|[+ \t])/$1$under$2$3/;
105
# $reg1="$regs{$reg1}" if defined($regs{$reg1});
106
# $reg2="$regs{$reg2}" if defined($regs{$reg2});
107
# $ret.=$addr if ($addr ne "") && ($addr ne 0);
109
# { $ret.="($reg1,$reg2,$idx)"; }
111
# { $ret.="($reg1)" }
115
sub main'mov { &out2("movl",@_); }
116
sub main'movb { &out2("movb",@_); }
117
sub main'and { &out2("andl",@_); }
118
sub main'or { &out2("orl",@_); }
119
sub main'shl { &out2("sall",@_); }
120
sub main'shr { &out2("shrl",@_); }
121
sub main'xor { &out2("xorl",@_); }
122
sub main'xorb { &out2("xorb",@_); }
123
sub main'add { &out2("addl",@_); }
124
sub main'adc { &out2("adcl",@_); }
125
sub main'sub { &out2("subl",@_); }
126
sub main'rotl { &out2("roll",@_); }
127
sub main'rotr { &out2("rorl",@_); }
128
sub main'exch { &out2("xchg",@_); }
129
sub main'cmp { &out2("cmpl",@_); }
130
sub main'lea { &out2("leal",@_); }
131
sub main'mul { &out1("mull",@_); }
132
sub main'div { &out1("divl",@_); }
133
sub main'jmp { &out1("jmp",@_); }
134
sub main'jmp_ptr { &out1p("jmp",@_); }
135
sub main'je { &out1("je",@_); }
136
sub main'jle { &out1("jle",@_); }
137
sub main'jne { &out1("jne",@_); }
138
sub main'jnz { &out1("jnz",@_); }
139
sub main'jz { &out1("jz",@_); }
140
sub main'jge { &out1("jge",@_); }
141
sub main'jl { &out1("jl",@_); }
142
sub main'jb { &out1("jb",@_); }
143
sub main'dec { &out1("decl",@_); }
144
sub main'inc { &out1("incl",@_); }
145
sub main'push { &out1("pushl",@_); $stack+=4; }
146
sub main'pop { &out1("popl",@_); $stack-=4; }
147
sub main'bswap { &out1("bswapl",@_); }
148
sub main'not { &out1("notl",@_); }
149
sub main'call { &out1("call",$under.$_[0]); }
150
sub main'ret { &out0("ret"); }
151
sub main'nop { &out0("nop"); }
155
local($name,$p1,$p2)=@_;
157
local(%special)=( "roll",0xD1C0,"rorl",0xD1C8,
158
"rcll",0xD1D0,"rcrl",0xD1D8,
159
"shll",0xD1E0,"shrl",0xD1E8,
162
if ((defined($special{$name})) && defined($regs{$p1}) && ($p2 == 1))
164
$op=$special{$name}|$reg_val{$p1};
165
$tmp1=sprintf ".byte %d\n",($op>>8)&0xff;
166
$tmp2=sprintf ".byte %d\t",$op &0xff;
172
&main'comment("$name $p2 $p1");
176
push(@out,"\t$name\t");
181
$tmp1=sprintf "\t" x $ll;
183
push(@out,&conv($p1)."\n");
191
push(@out,"\t$name\t".&conv($p1)."\n");
199
push(@out,"\t$name\t*".&conv($p1)."\n");
204
push(@out,"\t$_[0]\n");
211
# $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
213
$p=$regs{$p} if (defined($regs{$p}));
215
$p =~ s/^(-{0,1}[0-9A-Fa-f]+)$/\$$1/;
216
$p =~ s/^(0x[0-9A-Fa-f]+)$/\$$1/;
232
sub main'function_begin
245
{ $tmp=push(@out,"\tTYPE($func,\@function)\n"); }
246
else { $tmp=push(@out,"\t.type\t$func,\@function\n"); }
247
push(@out,"$func:\n");
259
sub main'function_begin_B
261
local($func,$extra)=@_;
272
{ push(@out,"\tTYPE($func,\@function)\n"); }
273
else { push(@out,"\t.type $func,\@function\n"); }
274
push(@out,"$func:\n");
278
sub main'function_end
294
{ push(@out,"\tSIZE($func,.${func}_end-$func)\n"); }
295
else { push(@out,"\t.size\t$func,.${func}_end-$func\n"); }
296
push(@out,".ident \"$func\"\n");
301
sub main'function_end_A
315
sub main'function_end_B
321
push(@out,".${func}_end:\n");
323
{ push(@out,"\tSIZE($func,.${func}_end-$func)\n"); }
324
else { push(@out,"\t.size\t$func,.${func}_end-$func\n"); }
325
push(@out,".ident \"desasm.pl\"\n");
334
return(&main'DWP($stack+$num*4,"esp","",0));
341
&main'sub("esp",$num*4);
348
&main'add("esp",$num*4);
353
return(&main'DWP($_[0]*4,"esp","",0));
356
# Should use swtmp, which is above esp. Linix can trash the stack above esp
361
# return(&main'DWP(-($num+1)*4,"esp","",0));
371
{ push(@out,"\t$com_start $_ $com_end\n"); }
377
if (!defined($label{$_[0]}))
379
$label{$_[0]}=".${label}${_[0]}";
382
return($label{$_[0]});
387
if (!defined($label{$_[0]}))
389
$label{$_[0]}=".${label}${_[0]}";
392
push(@out,".align $align\n") if ($_[1] != 0);
393
push(@out,"$label{$_[0]}:\n");
402
push(@out,"\t.long $_[0]\n");