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