diff options
Diffstat (limited to 'crypto/perlasm/x86unix.pl')
| -rw-r--r-- | crypto/perlasm/x86unix.pl | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/crypto/perlasm/x86unix.pl b/crypto/perlasm/x86unix.pl new file mode 100644 index 0000000000..3426563dca --- /dev/null +++ b/crypto/perlasm/x86unix.pl @@ -0,0 +1,313 @@ +#!/usr/local/bin/perl + +package x86ms; + +$label="L000"; + +$align=($main'aout)?"4":"16"; +$under=($main'aout)?"_":""; +$com_start=($main'sol)?"/":"#"; + +if ($main'cpp) + { + $align="ALIGN"; + $under=""; + $com_start='/*'; + $com_end='*/'; + } + +%lb=( 'eax', '%al', + 'ebx', '%bl', + 'ecx', '%cl', + 'edx', '%dl', + 'ax', '%al', + 'bx', '%bl', + 'cx', '%cl', + 'dx', '%dl', + ); + +%hb=( 'eax', '%ah', + 'ebx', '%bh', + 'ecx', '%ch', + 'edx', '%dh', + 'ax', '%ah', + 'bx', '%bh', + 'cx', '%ch', + 'dx', '%dh', + ); + +%regs=( 'eax', '%eax', + 'ebx', '%ebx', + 'ecx', '%ecx', + 'edx', '%edx', + 'esi', '%esi', + 'edi', '%edi', + 'ebp', '%ebp', + 'esp', '%esp', + ); + +sub main'LB + { + (defined($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 "") + { + $ret.="($reg1,$reg2,$idx)"; + } + else + { + $ret.="($reg1)" + } + return($ret); + } + +sub main'BP + { + local($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($ret); + } + +sub main'mov { &out2("movl",@_); } +sub main'movb { &out2("movb",@_); } +sub main'and { &out2("andl",@_); } +sub main'or { &out2("orl",@_); } +sub main'shl { &out2("sall",@_); } +sub main'shr { &out2("shrl",@_); } +sub main'xor { &out2("xorl",@_); } +sub main'add { &out2("addl",@_); } +sub main'sub { &out2("subl",@_); } +sub main'rotl { &out2("roll",@_); } +sub main'rotr { &out2("rorl",@_); } +sub main'exch { &out2("xchg",@_); } +sub main'cmp { &out2("cmpl",@_); } +sub main'jmp { &out1("jmp",@_); } +sub main'je { &out1("je",@_); } +sub main'jne { &out1("jne",@_); } +sub main'jnz { &out1("jnz",@_); } +sub main'jz { &out1("jz",@_); } +sub main'dec { &out1("decl",@_); } +sub main'push { &out1("pushl",@_); } +sub main'call { &out1("call",$under.$_[0]); } + + +sub out2 + { + local($name,$p1,$p2)=@_; + local($l,$ll,$t); + + print "\t$name\t"; + $t=&conv($p2).","; + $l=length($t); + print $t; + $ll=4-($l+9)/8; + print "\t" x $ll; + print &conv($p1); + print "\n"; + } + +sub out1 + { + local($name,$p1)=@_; + local($l,$t); + + print "\t$name\t"; + print &conv($p1); + print "\n"; + } + +sub conv + { + local($p)=@_; + +# $p =~ s/0x([0-9A-Fa-f]+)/0$1h/; + + $p=$regs{$p} if (defined($regs{$p})); + + $p =~ s/^([0-9A-Fa-f]+)$/\$$1/; + $p =~ s/^(0x[0-9A-Fa-f]+)$/\$$1/; + return $p; + } + +sub main'file + { + local($file)=@_; + + print <<"EOF"; + .file "$file.s" + .version "01.01" +gcc2_compiled.: +EOF + } + +sub main'function_begin + { + local($func,$num)=@_; + + $params=$num*4; + + $func=$under.$func; + + print <<"EOF"; +.text + .align $align +.globl $func +EOF + if ($main'cpp) + { printf("\tTYPE($func,\@function)\n"); } + else { printf("\t.type $func,\@function\n"); } + print <<"EOF"; +$func: + pushl %ebp + pushl %ebx + pushl %esi + pushl %edi + +EOF + $stack=20; + } + +sub main'function_end + { + local($func)=@_; + + $func=$under.$func; + + print <<"EOF"; + popl %edi + popl %esi + popl %ebx + popl %ebp + ret +.${func}_end: +EOF + if ($main'cpp) + { printf("\tSIZE($func,.${func}_end-$func)\n"); } + else { printf("\t.size\t$func,.${func}_end-$func\n"); } + print ".ident \"desasm.pl\"\n"; + $stack=0; + %label=(); + } + +sub main'function_end_A + { + local($func)=@_; + + print <<"EOF"; + popl %edi + popl %esi + popl %ebx + popl %ebp + ret +EOF + } + +sub main'function_end_B + { + local($func)=@_; + + $func=$under.$func; + + print <<"EOF"; +.${func}_end: +EOF + if ($main'cpp) + { printf("\tSIZE($func,.${func}_end-$func)\n"); } + else { printf("\t.size\t$func,.${func}_end-$func\n"); } + print ".ident \"desasm.pl\"\n"; + $stack=0; + %label=(); + } + +sub main'wparam + { + local($num)=@_; + + return(&main'DWP($stack+$num*4,"esp","",0)); + } + +sub main'wtmp_b + { + local($num,$b)=@_; + + return(&main'BP(-(($num+1)*4)+$b,"esp","",0)); + } + +sub main'wtmp + { + local($num)=@_; + + return(&main'DWP(-($num+1)*4,"esp","",0)); + } + +sub main'comment + { + foreach (@_) + { + if (/^\s*$/) + { print "\n"; } + else + { print "\t$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++; + } + print ".align $align\n"; + print "$label{$_[0]}:\n"; + } + +sub main'file_end + { + } |