3 # PowerPC assembler distiller by <appro>.
6 open STDOUT,">$output" || die "can't open $output: $!";
10 my $dotinlocallabels=($flavour=~/linux/)?1:0;
12 ################################################################
13 # directives which need special treatment on different platforms
14 ################################################################
18 my $global = \$GLOBALS{$name};
23 SWITCH: for ($flavour) {
24 /aix/ && do { $name = ".$name";
27 /osx/ && do { $name = "_$name";
30 /linux.*32/ && do { $ret .= ".globl $name\n";
31 $ret .= ".type $name,\@function";
34 /linux.*64/ && do { $ret .= ".globl .$name\n";
35 $ret .= ".type .$name,\@function\n";
36 $ret .= ".section \".opd\",\"aw\"\n";
37 $ret .= ".globl $name\n";
40 $ret .= ".quad .$name,.TOC.\@tocbase,0\n";
41 $ret .= ".size $name,24\n";
42 $ret .= ".previous\n";
49 $ret = ".globl $name" if (!$ret);
54 ($flavour =~ /aix/) ? ".csect" : ".text";
59 if ($flavour =~ /osx/)
61 $arch = ($flavour=~/64/) ? "ppc970-64" : "ppc970" if ($arch eq "any");
67 my $line = join(",",@_);
68 if ($line =~ /^"(.*)"$/)
69 { ".byte " . join(",",unpack("C*",$1),0) . "\n.align 2"; }
74 ################################################################
75 # simplified mnemonics not handled by at least one assembler
76 ################################################################
79 my $cr = 0; $cr = shift if ($#_>1);
80 # Some out-of-date 32-bit GNU assembler just can't handle cmplw...
81 ($flavour =~ /linux.*32/) ?
82 " .long ".sprintf "0x%x",31<<26|$cr<<23|$_[0]<<16|$_[1]<<11|64 :
83 " cmplw ".join(',',$cr,@_);
87 my $bo = $f=~/[\+\-]/ ? 17 : 16;
93 $line =~ s|[#!;].*$||; # get rid of asm-style comments...
94 $line =~ s|/\*.*\*/||; # ... and C-style comments...
95 $line =~ s|^\s+||; # ... and skip white spaces in beginning...
96 $line =~ s|\s+$||; # ... and at the end
99 $line =~ s|\b\.L(\w+)|L$1|g; # common denominator for Locallabel
100 $line =~ s|\bL(\w+)|\.L$1|g if ($dotinlocallabels);
104 $line =~ s|(^[\.\w]+)\:\s*||;
106 printf "%s:",($GLOBALS{$label} or $label) if ($label);
110 $line =~ s|^\s*(\.?)(\w+)([\.\+\-]?)\s*||;
111 my $c = $1; $c = "\t" if ($c eq "");
114 my $opcode = eval("\$$mnemonic");
115 $line =~ s|\bc?r([0-9]+)\b|$1|g if ($c ne "." and $flavour !~ /osx/);
116 if (ref($opcode) eq 'CODE') { $line = &$opcode($f,split(',',$line)); }
117 elsif ($mnemonic) { $line = $c.$mnemonic.$f."\t".$line; }
120 print $line if ($line);