#!/usr/local/bin/perl package x86ms; $label="L000"; %lb=( 'eax', 'al', 'ebx', 'bl', 'ecx', 'cl', 'edx', 'dl', 'ax', 'al', 'bx', 'bl', 'cx', 'cl', 'dx', 'dl', ); %hb=( 'eax', 'ah', 'ebx', 'bh', 'ecx', 'ch', 'edx', 'dh', 'ax', 'ah', 'bx', 'bh', 'cx', 'ch', 'dx', 'dh', ); sub main'asm_init_output { @out=(); } sub main'asm_get_output { return(@out); } sub main'get_labels { return(@labels); } sub main'external_label { push(@labels,@_); } sub main'LB { (defined($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{$_[0]}); } sub main'BP { &get_mem("BYTE",@_); } sub main'DWP { &get_mem("DWORD",@_); } sub main'QWP { &get_mem("QWORD",@_); } sub main'BC { return @_; } sub main'DWC { return @_; } sub main'stack_push { local($num)=@_; $stack+=$num*4; &main'sub("esp",$num*4); } sub main'stack_pop { local($num)=@_; $stack-=$num*4; &main'add("esp",$num*4); } sub get_mem { local($size,$addr,$reg1,$reg2,$idx)=@_; local($t,$post); local($ret)="$size PTR "; $addr =~ s/^\s+//; if ($addr =~ /^(.+)\+(.+)$/) { $reg2=&conv($1); $addr="_$2"; } elsif ($addr =~ /^[_a-z][_a-z0-9]*$/i) { $addr="_$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",@_); } sub main'je { &out1("je",@_); } sub main'jle { &out1("jle",@_); } sub main'jz { &out1("jz",@_); } sub main'jge { &out1("jge",@_); } sub main'jl { &out1("jl",@_); } sub main'ja { &out1("ja",@_); } sub main'jae { &out1("jae",@_); } sub main'jb { &out1("jb",@_); } sub main'jbe { &out1("jbe",@_); } sub main'jc { &out1("jc",@_); } sub main'jnc { &out1("jnc",@_); } sub main'jnz { &out1("jnz",@_); } sub main'jne { &out1("jne",@_); } sub main'jno { &out1("jno",@_); } 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/?'':'_').$_[0]); } sub main'ret { &out0("ret"); } sub main'nop { &out0("nop"); } sub main'test { &out2("test",@_); } sub main'bt { &out2("bt",@_); } sub main'leave { &out0("leave"); } sub main'cpuid { &out0("DW\t0A20Fh"); } sub main'rdtsc { &out0("DW\t0310Fh"); } sub main'halt { &out0("hlt"); } sub main'movz { &out2("movzx",@_); } sub main'neg { &out1("neg",@_); } sub main'cld { &out0("cld"); } # SSE2 sub main'emms { &out0("emms"); } sub main'movd { &out2("movd",@_); } sub main'movq { &out2("movq",@_); } sub main'movdqu { &out2("movdqu",@_); } sub main'movdqa { &out2("movdqa",@_); } sub main'movdq2q{ &out2("movdq2q",@_); } sub main'movq2dq{ &out2("movq2dq",@_); } sub main'paddq { &out2("paddq",@_); } sub main'pmuludq{ &out2("pmuludq",@_); } sub main'psrlq { &out2("psrlq",@_); } sub main'psllq { &out2("psllq",@_); } sub main'pxor { &out2("pxor",@_); } sub main'por { &out2("por",@_); } sub main'pand { &out2("pand",@_); } sub out2 { local($name,$p1,$p2)=@_; local($l,$t); push(@out,"\t$name\t"); $t=&conv($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 { local($name)=@_; push(@out,"\t$name\n"); } sub out1 { local($name,$p1)=@_; local($l,$t); push(@out,"\t$name\t".&conv($p1)."\n"); } sub conv { local($p)=@_; $p =~ s/0x([0-9A-Fa-f]+)/0$1h/; return $p; } sub using486 { return if $using486; $using486++; grep(s/\.386/\.486/,@out); } sub main'file { local($file)=@_; local($tmp)=<<"EOF"; TITLE $file.asm .386 .model FLAT EOF push(@out,$tmp); } sub main'function_begin { local($func,$extra)=@_; push(@labels,$func); local($tmp)=<<"EOF"; _TEXT\$ SEGMENT PARA PUBLIC _$func $extra _$func PROC NEAR push ebp push ebx push esi push edi EOF push(@out,$tmp); $stack=20; } sub main'function_begin_B { local($func,$extra)=@_; local($tmp)=<<"EOF"; _TEXT\$ SEGMENT PARA PUBLIC _$func $extra _$func PROC NEAR EOF push(@out,$tmp); $stack=4; } sub main'function_end { local($func)=@_; local($tmp)=<<"EOF"; pop edi pop esi pop ebx pop ebp ret _$func ENDP _TEXT\$ ENDS EOF push(@out,$tmp); $stack=0; %label=(); } sub main'function_end_B { local($func)=@_; local($tmp)=<<"EOF"; _$func ENDP _TEXT\$ ENDS EOF push(@out,$tmp); $stack=0; %label=(); } sub main'function_end_A { local($func)=@_; local($tmp)=<<"EOF"; pop edi pop esi pop ebx pop ebp ret EOF push(@out,$tmp); } sub main'file_end { # try to detect if SSE2 or MMX extensions were used... if (grep {/xmm[0-7]\s*,/i} @out) { grep {s/\.[3-7]86/\.686\n\t\.XMM/} @out; } elsif (grep {/mm[0-7]\s*,/i} @out) { grep {s/\.[3-7]86/\.686\n\t\.MMX/} @out; } push(@out,"END\n"); } sub main'wparam { local($num)=@_; return(&main'DWP($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 # { # local($num)=@_; # # return(&main'DWP(-(($num+1)*4),"esp","",0)); # } sub main'comment { foreach (@_) { push(@out,"\t; $_\n"); } } sub main'public_label { $label{$_[0]}="_$_[0]" if (!defined($label{$_[0]})); push(@out,"PUBLIC\t$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]); } if((defined $_[2]) && ($_[2] == 1)) { push(@out,"$label{$_[0]}::\n"); } elsif ($label{$_[0]} !~ /^\$/) { push(@out,"$label{$_[0]}\tLABEL PTR\n"); } else { push(@out,"$label{$_[0]}:\n"); } } sub main'data_word { push(@out,"\tDD\t".join(',',@_)."\n"); } sub main'align { push(@out,"\tALIGN\t$_[0]\n"); } sub out1p { local($name,$p1)=@_; local($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)=@_; local($tmp)=<<___; OPTION DOTNAME .CRT\$XIU SEGMENT DWORD PUBLIC 'DATA' EXTRN _$f:NEAR DD _$f .CRT\$XIU ENDS ___ push(@out,$tmp); } 1;