462 lines
8.1 KiB
Perl
462 lines
8.1 KiB
Perl
#!/usr/local/bin/perl
|
|
|
|
package x86unix;
|
|
|
|
$label="L000";
|
|
|
|
$align=($main'aout)?"4":"16";
|
|
$under=($main'aout)?"_":"";
|
|
$com_start=($main'sol)?"/":"#";
|
|
|
|
sub main'asm_init_output { @out=(); }
|
|
sub main'asm_get_output { return(@out); }
|
|
sub main'get_labels { return(@labels); }
|
|
sub main'external_label { push(@labels,@_); }
|
|
|
|
if ($main'cpp)
|
|
{
|
|
$align="ALIGN";
|
|
$under="";
|
|
$com_start='/*';
|
|
$com_end='*/';
|
|
}
|
|
|
|
%lb=( 'eax', '%al',
|
|
'ebx', '%bl',
|
|
'ecx', '%cl',
|
|
'edx', '%dl',
|
|
'ax', '%al',
|
|
'bx', '%bl',
|
|
'cx', '%cl',
|
|
'dx', '%dl',
|
|
);
|
|
|
|
%hb=( 'eax', '%ah',
|
|
'ebx', '%bh',
|
|
'ecx', '%ch',
|
|
'edx', '%dh',
|
|
'ax', '%ah',
|
|
'bx', '%bh',
|
|
'cx', '%ch',
|
|
'dx', '%dh',
|
|
);
|
|
|
|
%regs=( 'eax', '%eax',
|
|
'ebx', '%ebx',
|
|
'ecx', '%ecx',
|
|
'edx', '%edx',
|
|
'esi', '%esi',
|
|
'edi', '%edi',
|
|
'ebp', '%ebp',
|
|
'esp', '%esp',
|
|
);
|
|
|
|
%reg_val=(
|
|
'eax', 0x00,
|
|
'ebx', 0x03,
|
|
'ecx', 0x01,
|
|
'edx', 0x02,
|
|
'esi', 0x06,
|
|
'edi', 0x07,
|
|
'ebp', 0x05,
|
|
'esp', 0x04,
|
|
);
|
|
|
|
sub main'LB
|
|
{
|
|
(defined($lb{$_[0]})) || die "$_[0] does not have a 'low byte'\n";
|
|
return($lb{$_[0]});
|
|
}
|
|
|
|
sub main'HB
|
|
{
|
|
(defined($hb{$_[0]})) || die "$_[0] does not have a 'high byte'\n";
|
|
return($hb{$_[0]});
|
|
}
|
|
|
|
sub main'DWP
|
|
{
|
|
local($addr,$reg1,$reg2,$idx)=@_;
|
|
|
|
$ret="";
|
|
$addr =~ s/(^|[+ \t])([A-Za-z_]+)($|[+ \t])/$1$under$2$3/;
|
|
$reg1="$regs{$reg1}" if defined($regs{$reg1});
|
|
$reg2="$regs{$reg2}" if defined($regs{$reg2});
|
|
$ret.=$addr if ($addr ne "") && ($addr ne 0);
|
|
if ($reg2 ne "")
|
|
{
|
|
if($idx ne "")
|
|
{ $ret.="($reg1,$reg2,$idx)"; }
|
|
else
|
|
{ $ret.="($reg1,$reg2)"; }
|
|
}
|
|
else
|
|
{ $ret.="($reg1)" }
|
|
return($ret);
|
|
}
|
|
|
|
sub main'BP
|
|
{
|
|
return(&main'DWP(@_));
|
|
}
|
|
|
|
sub main'BC
|
|
{
|
|
return @_;
|
|
}
|
|
|
|
sub main'DWC
|
|
{
|
|
return @_;
|
|
}
|
|
|
|
#sub main'BP
|
|
# {
|
|
# local($addr,$reg1,$reg2,$idx)=@_;
|
|
#
|
|
# $ret="";
|
|
#
|
|
# $addr =~ s/(^|[+ \t])([A-Za-z_]+)($|[+ \t])/$1$under$2$3/;
|
|
# $reg1="$regs{$reg1}" if defined($regs{$reg1});
|
|
# $reg2="$regs{$reg2}" if defined($regs{$reg2});
|
|
# $ret.=$addr if ($addr ne "") && ($addr ne 0);
|
|
# if ($reg2 ne "")
|
|
# { $ret.="($reg1,$reg2,$idx)"; }
|
|
# else
|
|
# { $ret.="($reg1)" }
|
|
# return($ret);
|
|
# }
|
|
|
|
sub main'mov { &out2("movl",@_); }
|
|
sub main'movb { &out2("movb",@_); }
|
|
sub main'and { &out2("andl",@_); }
|
|
sub main'or { &out2("orl",@_); }
|
|
sub main'shl { &out2("sall",@_); }
|
|
sub main'shr { &out2("shrl",@_); }
|
|
sub main'xor { &out2("xorl",@_); }
|
|
sub main'xorb { &out2("xorb",@_); }
|
|
sub main'add { &out2("addl",@_); }
|
|
sub main'adc { &out2("adcl",@_); }
|
|
sub main'sub { &out2("subl",@_); }
|
|
sub main'rotl { &out2("roll",@_); }
|
|
sub main'rotr { &out2("rorl",@_); }
|
|
sub main'exch { &out2("xchg",@_); }
|
|
sub main'cmp { &out2("cmpl",@_); }
|
|
sub main'lea { &out2("leal",@_); }
|
|
sub main'mul { &out1("mull",@_); }
|
|
sub main'div { &out1("divl",@_); }
|
|
sub main'jmp { &out1("jmp",@_); }
|
|
sub main'jmp_ptr { &out1p("jmp",@_); }
|
|
sub main'je { &out1("je",@_); }
|
|
sub main'jle { &out1("jle",@_); }
|
|
sub main'jne { &out1("jne",@_); }
|
|
sub main'jnz { &out1("jnz",@_); }
|
|
sub main'jz { &out1("jz",@_); }
|
|
sub main'jge { &out1("jge",@_); }
|
|
sub main'jl { &out1("jl",@_); }
|
|
sub main'jb { &out1("jb",@_); }
|
|
sub main'jc { &out1("jc",@_); }
|
|
sub main'jnc { &out1("jnc",@_); }
|
|
sub main'jno { &out1("jno",@_); }
|
|
sub main'dec { &out1("decl",@_); }
|
|
sub main'inc { &out1("incl",@_); }
|
|
sub main'push { &out1("pushl",@_); $stack+=4; }
|
|
sub main'pop { &out1("popl",@_); $stack-=4; }
|
|
sub main'not { &out1("notl",@_); }
|
|
sub main'call { &out1("call",$under.$_[0]); }
|
|
sub main'ret { &out0("ret"); }
|
|
sub main'nop { &out0("nop"); }
|
|
|
|
# The bswapl instruction is new for the 486. Emulate if i386.
|
|
sub main'bswap
|
|
{
|
|
if ($main'i386)
|
|
{
|
|
&main'comment("bswapl @_");
|
|
&main'exch(main'HB(@_),main'LB(@_));
|
|
&main'rotr(@_,16);
|
|
&main'exch(main'HB(@_),main'LB(@_));
|
|
}
|
|
else
|
|
{
|
|
&out1("bswapl",@_);
|
|
}
|
|
}
|
|
|
|
sub out2
|
|
{
|
|
local($name,$p1,$p2)=@_;
|
|
local($l,$ll,$t);
|
|
local(%special)=( "roll",0xD1C0,"rorl",0xD1C8,
|
|
"rcll",0xD1D0,"rcrl",0xD1D8,
|
|
"shll",0xD1E0,"shrl",0xD1E8,
|
|
"sarl",0xD1F8);
|
|
|
|
if ((defined($special{$name})) && defined($regs{$p1}) && ($p2 == 1))
|
|
{
|
|
$op=$special{$name}|$reg_val{$p1};
|
|
$tmp1=sprintf(".byte %d\n",($op>>8)&0xff);
|
|
$tmp2=sprintf(".byte %d\t",$op &0xff);
|
|
push(@out,$tmp1);
|
|
push(@out,$tmp2);
|
|
|
|
$p2=&conv($p2);
|
|
$p1=&conv($p1);
|
|
&main'comment("$name $p2 $p1");
|
|
return;
|
|
}
|
|
|
|
push(@out,"\t$name\t");
|
|
$t=&conv($p2).",";
|
|
$l=length($t);
|
|
push(@out,$t);
|
|
$ll=4-($l+9)/8;
|
|
$tmp1=sprintf("\t" x $ll);
|
|
push(@out,$tmp1);
|
|
push(@out,&conv($p1)."\n");
|
|
}
|
|
|
|
sub out1
|
|
{
|
|
local($name,$p1)=@_;
|
|
local($l,$t);
|
|
local(%special)=("bswapl",0x0FC8);
|
|
|
|
if ((defined($special{$name})) && defined($regs{$p1}))
|
|
{
|
|
$op=$special{$name}|$reg_val{$p1};
|
|
$tmp1=sprintf(".byte %d\n",($op>>8)&0xff);
|
|
$tmp2=sprintf(".byte %d\t",$op &0xff);
|
|
push(@out,$tmp1);
|
|
push(@out,$tmp2);
|
|
|
|
$p2=&conv($p2);
|
|
$p1=&conv($p1);
|
|
&main'comment("$name $p2 $p1");
|
|
return;
|
|
}
|
|
|
|
push(@out,"\t$name\t".&conv($p1)."\n");
|
|
}
|
|
|
|
sub out1p
|
|
{
|
|
local($name,$p1)=@_;
|
|
local($l,$t);
|
|
|
|
push(@out,"\t$name\t*".&conv($p1)."\n");
|
|
}
|
|
|
|
sub out0
|
|
{
|
|
push(@out,"\t$_[0]\n");
|
|
}
|
|
|
|
sub conv
|
|
{
|
|
local($p)=@_;
|
|
|
|
# $p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
|
|
|
|
$p=$regs{$p} if (defined($regs{$p}));
|
|
|
|
$p =~ s/^(-{0,1}[0-9A-Fa-f]+)$/\$$1/;
|
|
$p =~ s/^(0x[0-9A-Fa-f]+)$/\$$1/;
|
|
return $p;
|
|
}
|
|
|
|
sub main'file
|
|
{
|
|
local($file)=@_;
|
|
|
|
local($tmp)=<<"EOF";
|
|
.file "$file.s"
|
|
.version "01.01"
|
|
gcc2_compiled.:
|
|
EOF
|
|
push(@out,$tmp);
|
|
}
|
|
|
|
sub main'function_begin
|
|
{
|
|
local($func)=@_;
|
|
|
|
&main'external_label($func);
|
|
$func=$under.$func;
|
|
|
|
local($tmp)=<<"EOF";
|
|
.text
|
|
.align $align
|
|
.globl $func
|
|
EOF
|
|
push(@out,$tmp);
|
|
if ($main'cpp)
|
|
{ $tmp=push(@out,"\tTYPE($func,\@function)\n"); }
|
|
elsif ($main'gaswin)
|
|
{ $tmp=push(@out,"\t.def\t$func;\t.scl\t2;\t.type\t32;\t.endef\n"); }
|
|
else { $tmp=push(@out,"\t.type\t$func,\@function\n"); }
|
|
push(@out,"$func:\n");
|
|
$tmp=<<"EOF";
|
|
pushl %ebp
|
|
pushl %ebx
|
|
pushl %esi
|
|
pushl %edi
|
|
|
|
EOF
|
|
push(@out,$tmp);
|
|
$stack=20;
|
|
}
|
|
|
|
sub main'function_begin_B
|
|
{
|
|
local($func,$extra)=@_;
|
|
|
|
&main'external_label($func);
|
|
$func=$under.$func;
|
|
|
|
local($tmp)=<<"EOF";
|
|
.text
|
|
.align $align
|
|
.globl $func
|
|
EOF
|
|
push(@out,$tmp);
|
|
if ($main'cpp)
|
|
{ push(@out,"\tTYPE($func,\@function)\n"); }
|
|
elsif ($main'gaswin)
|
|
{ $tmp=push(@out,"\t.def\t$func;\t.scl\t2;\t.type\t32;\t.endef\n"); }
|
|
else { push(@out,"\t.type $func,\@function\n"); }
|
|
push(@out,"$func:\n");
|
|
$stack=4;
|
|
}
|
|
|
|
sub main'function_end
|
|
{
|
|
local($func)=@_;
|
|
|
|
$func=$under.$func;
|
|
|
|
local($tmp)=<<"EOF";
|
|
popl %edi
|
|
popl %esi
|
|
popl %ebx
|
|
popl %ebp
|
|
ret
|
|
.${func}_end:
|
|
EOF
|
|
push(@out,$tmp);
|
|
if ($main'cpp)
|
|
{ push(@out,"\tSIZE($func,.${func}_end-$func)\n"); }
|
|
elsif ($main'gaswin)
|
|
{ $tmp=push(@out,"\t.align 4\n"); }
|
|
else { push(@out,"\t.size\t$func,.${func}_end-$func\n"); }
|
|
push(@out,".ident \"$func\"\n");
|
|
$stack=0;
|
|
%label=();
|
|
}
|
|
|
|
sub main'function_end_A
|
|
{
|
|
local($func)=@_;
|
|
|
|
local($tmp)=<<"EOF";
|
|
popl %edi
|
|
popl %esi
|
|
popl %ebx
|
|
popl %ebp
|
|
ret
|
|
EOF
|
|
push(@out,$tmp);
|
|
}
|
|
|
|
sub main'function_end_B
|
|
{
|
|
local($func)=@_;
|
|
|
|
$func=$under.$func;
|
|
|
|
push(@out,".L_${func}_end:\n");
|
|
if ($main'cpp)
|
|
{ push(@out,"\tSIZE($func,.L_${func}_end-$func)\n"); }
|
|
elsif ($main'gaswin)
|
|
{ push(@out,"\t.align 4\n"); }
|
|
else { push(@out,"\t.size\t$func,.L_${func}_end-$func\n"); }
|
|
push(@out,".ident \"desasm.pl\"\n");
|
|
$stack=0;
|
|
%label=();
|
|
}
|
|
|
|
sub main'wparam
|
|
{
|
|
local($num)=@_;
|
|
|
|
return(&main'DWP($stack+$num*4,"esp","",0));
|
|
}
|
|
|
|
sub main'stack_push
|
|
{
|
|
local($num)=@_;
|
|
$stack+=$num*4;
|
|
&main'sub("esp",$num*4);
|
|
}
|
|
|
|
sub main'stack_pop
|
|
{
|
|
local($num)=@_;
|
|
$stack-=$num*4;
|
|
&main'add("esp",$num*4);
|
|
}
|
|
|
|
sub main'swtmp
|
|
{
|
|
return(&main'DWP($_[0]*4,"esp","",0));
|
|
}
|
|
|
|
# Should use swtmp, which is above esp. Linix can trash the stack above esp
|
|
#sub main'wtmp
|
|
# {
|
|
# local($num)=@_;
|
|
#
|
|
# return(&main'DWP(-($num+1)*4,"esp","",0));
|
|
# }
|
|
|
|
sub main'comment
|
|
{
|
|
foreach (@_)
|
|
{
|
|
if (/^\s*$/)
|
|
{ push(@out,"\n"); }
|
|
else
|
|
{ push(@out,"\t$com_start $_ $com_end\n"); }
|
|
}
|
|
}
|
|
|
|
sub main'label
|
|
{
|
|
if (!defined($label{$_[0]}))
|
|
{
|
|
$label{$_[0]}=".${label}${_[0]}";
|
|
$label++;
|
|
}
|
|
return($label{$_[0]});
|
|
}
|
|
|
|
sub main'set_label
|
|
{
|
|
if (!defined($label{$_[0]}))
|
|
{
|
|
$label{$_[0]}=".${label}${_[0]}";
|
|
$label++;
|
|
}
|
|
push(@out,".align $align\n") if ($_[1] != 0);
|
|
push(@out,"$label{$_[0]}:\n");
|
|
}
|
|
|
|
sub main'file_end
|
|
{
|
|
}
|
|
|
|
sub main'data_word
|
|
{
|
|
push(@out,"\t.long $_[0]\n");
|
|
}
|