openssl/crypto/perlasm/x86nasm.pl
2005-06-28 11:28:43 +00:00

437 lines
7.4 KiB
Perl

#!/usr/local/bin/perl
package x86nasm;
$label="L000";
$under=($main'netware)?'':'_';
%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',
);
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,@_);
foreach (@_) {
push(@out,".") if ($main'mwerks);
push(@out, "extern\t${under}$_\n");
}
}
sub main'LB
{
(defined($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{$_[0]});
}
sub main'BP
{
&get_mem("BYTE",@_);
}
sub main'DWP
{
&get_mem("DWORD",@_);
}
sub main'QWP
{
&get_mem("",@_);
}
sub main'BC
{
return (($main'mwerks)?"":"BYTE ")."@_";
}
sub main'DWC
{
return (($main'mwerks)?"":"DWORD ")."@_";
}
sub main'stack_push
{
my($num)=@_;
$stack+=$num*4;
&main'sub("esp",$num*4);
}
sub main'stack_pop
{
my($num)=@_;
$stack-=$num*4;
&main'add("esp",$num*4);
}
sub get_mem
{
my($size,$addr,$reg1,$reg2,$idx)=@_;
my($t,$post);
my($ret)=$size;
if ($ret ne "")
{
$ret .= " PTR" if ($main'mwerks);
$ret .= " ";
}
$ret .= "[";
$addr =~ s/^\s+//;
if ($addr =~ /^(.+)\+(.+)$/)
{
$reg2=&conv($1);
$addr="$under$2";
}
elsif ($addr =~ /^[_a-z][_a-z0-9]*$/i)
{
$addr="$under$addr";
}
if ($addr =~ /^.+\-.+$/) { $addr="($addr)"; }
$reg1="$regs{$reg1}" if defined($regs{$reg1});
$reg2="$regs{$reg2}" if defined($regs{$reg2});
if (($addr ne "") && ($addr ne 0))
{
if ($addr !~ /^-/)
{ $ret.="${addr}+"; }
else { $post=$addr; }
}
if ($reg2 ne "")
{
$t="";
$t="*$idx" if ($idx != 0);
$reg1="+".$reg1 if ("$reg1$post" ne "");
$ret.="$reg2$t$reg1$post]";
}
else
{
$ret.="$reg1$post]"
}
$ret =~ s/\+\]/]/; # in case $addr was the only argument
return($ret);
}
sub main'mov { &out2("mov",@_); }
sub main'movb { &out2("mov",@_); }
sub main'and { &out2("and",@_); }
sub main'or { &out2("or",@_); }
sub main'shl { &out2("shl",@_); }
sub main'shr { &out2("shr",@_); }
sub main'xor { &out2("xor",@_); }
sub main'xorb { &out2("xor",@_); }
sub main'add { &out2("add",@_); }
sub main'adc { &out2("adc",@_); }
sub main'sub { &out2("sub",@_); }
sub main'sbb { &out2("sbb",@_); }
sub main'rotl { &out2("rol",@_); }
sub main'rotr { &out2("ror",@_); }
sub main'exch { &out2("xchg",@_); }
sub main'cmp { &out2("cmp",@_); }
sub main'lea { &out2("lea",@_); }
sub main'mul { &out1("mul",@_); }
sub main'div { &out1("div",@_); }
sub main'dec { &out1("dec",@_); }
sub main'inc { &out1("inc",@_); }
sub main'jmp { &out1("jmp",@_); }
sub main'jmp_ptr { &out1p("jmp",@_); }
# This is a bit of a kludge: declare all branches as NEAR.
$near=($main'mwerks)?'':'NEAR';
sub main'je { &out1("je $near",@_); }
sub main'jle { &out1("jle $near",@_); }
sub main'jz { &out1("jz $near",@_); }
sub main'jge { &out1("jge $near",@_); }
sub main'jl { &out1("jl $near",@_); }
sub main'ja { &out1("ja $near",@_); }
sub main'jae { &out1("jae $near",@_); }
sub main'jb { &out1("jb $near",@_); }
sub main'jbe { &out1("jbe $near",@_); }
sub main'jc { &out1("jc $near",@_); }
sub main'jnc { &out1("jnc $near",@_); }
sub main'jnz { &out1("jnz $near",@_); }
sub main'jne { &out1("jne $near",@_); }
sub main'jno { &out1("jno $near",@_); }
sub main'push { &out1("push",@_); $stack+=4; }
sub main'pop { &out1("pop",@_); $stack-=4; }
sub main'pushf { &out0("pushfd"); $stack+=4; }
sub main'popf { &out0("popfd"); $stack-=4; }
sub main'bswap { &out1("bswap",@_); &using486(); }
sub main'not { &out1("not",@_); }
sub main'call { &out1("call",($_[0]=~/^\@L/?'':$under).$_[0]); }
sub main'ret { &out0("ret"); }
sub main'nop { &out0("nop"); }
sub main'test { &out2("test",@_); }
sub main'bt { &out2("bt",@_); }
sub main'leave { &out0("leave"); }
sub main'cpuid { &out0("cpuid"); }
sub main'rdtsc { &out0("rdtsc"); }
sub main'halt { &out0("hlt"); }
sub main'movz { &out2("movzx",@_); }
sub main'neg { &out1("neg",@_); }
sub main'cld { &out0("cld"); }
# SSE2
sub main'emms { &out0("emms"); }
sub main'movd { &out2("movd",@_); }
sub main'movq { &out2("movq",@_); }
sub main'movdqu { &out2("movdqu",@_); }
sub main'movdqa { &out2("movdqa",@_); }
sub main'movdq2q{ &out2("movdq2q",@_); }
sub main'movq2dq{ &out2("movq2dq",@_); }
sub main'paddq { &out2("paddq",@_); }
sub main'pmuludq{ &out2("pmuludq",@_); }
sub main'psrlq { &out2("psrlq",@_); }
sub main'psllq { &out2("psllq",@_); }
sub main'pxor { &out2("pxor",@_); }
sub main'por { &out2("por",@_); }
sub main'pand { &out2("pand",@_); }
sub out2
{
my($name,$p1,$p2)=@_;
my($l,$t);
push(@out,"\t$name\t");
if (!$main'mwerks and $name eq "lea")
{
$p1 =~ s/^[^\[]*\[/\[/;
$p2 =~ s/^[^\[]*\[/\[/;
}
$t=&conv($p1).",";
$l=length($t);
push(@out,$t);
$l=4-($l+9)/8;
push(@out,"\t" x $l);
push(@out,&conv($p2));
push(@out,"\n");
}
sub out0
{
my($name)=@_;
push(@out,"\t$name\n");
}
sub out1
{
my($name,$p1)=@_;
my($l,$t);
push(@out,"\t$name\t".&conv($p1)."\n");
}
sub conv
{
my($p)=@_;
$p =~ s/0x([0-9A-Fa-f]+)/0$1h/;
return $p;
}
sub using486
{
return if $using486;
$using486++;
grep(s/\.386/\.486/,@out);
}
sub main'file
{
if ($main'mwerks) { push(@out,".section\t.text\n"); }
else { push(@out,"section\t.text use32\n"); }
}
sub main'function_begin
{
my($func,$extra)=@_;
push(@labels,$func);
my($tmp)=<<"EOF";
global $under$func
$under$func:
push ebp
push ebx
push esi
push edi
EOF
push(@out,$tmp);
$stack=20;
}
sub main'function_begin_B
{
my($func,$extra)=@_;
my($tmp)=<<"EOF";
global $under$func
$under$func:
EOF
push(@out,$tmp);
$stack=4;
}
sub main'function_end
{
my($func)=@_;
my($tmp)=<<"EOF";
pop edi
pop esi
pop ebx
pop ebp
ret
EOF
push(@out,$tmp);
$stack=0;
%label=();
}
sub main'function_end_B
{
$stack=0;
%label=();
}
sub main'function_end_A
{
my($func)=@_;
my($tmp)=<<"EOF";
pop edi
pop esi
pop ebx
pop ebp
ret
EOF
push(@out,$tmp);
}
sub main'file_end
{
}
sub main'wparam
{
my($num)=@_;
return(&main'DWP($stack+$num*4,"esp","",0));
}
sub main'swtmp
{
return(&main'DWP($_[0]*4,"esp","",0));
}
# Should use swtmp, which is above esp. Linix can trash the stack above esp
#sub main'wtmp
# {
# my($num)=@_;
#
# return(&main'DWP(-(($num+1)*4),"esp","",0));
# }
sub main'comment
{
foreach (@_)
{
push(@out,"\t; $_\n");
}
}
sub main'public_label
{
$label{$_[0]}="${under}${_[0]}" if (!defined($label{$_[0]}));
push(@out,"global\t$label{$_[0]}\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]}";
$label++;
}
if ($_[1]!=0 && $_[1]>1)
{
main'align($_[1]);
}
push(@out,"$label{$_[0]}:\n");
}
sub main'data_word
{
push(@out,(($main'mwerks)?".long\t":"DD\t").join(',',@_)."\n");
}
sub main'align
{
push(@out,".") if ($main'mwerks);
push(@out,"align\t$_[0]\n");
}
sub out1p
{
my($name,$p1)=@_;
my($l,$t);
push(@out,"\t$name\t ".&conv($p1)."\n");
}
sub main'picmeup
{
local($dst,$sym)=@_;
&main'lea($dst,&main'DWP($sym));
}
sub main'blindpop { &out1("pop",@_); }
sub main'initseg
{
local($f)=@_;
if ($main'win32)
{
local($tmp)=<<___;
segment .CRT\$XIU data
extern $under$f
DD $under$f
___
push(@out,$tmp);
}
}
1;