# PowerPC assembler distiller by <appro>.
+my $flavour = shift;
my $output = shift;
open STDOUT,">$output" || die "can't open $output: $!";
-my $flavour = $output;
my %GLOBALS;
-my $dotinlocallabels=0;
+my $dotinlocallabels=($flavour=~/linux/)?1:0;
################################################################
# directives which need special treatment on different platforms
};
/linux.*32/ && do { $ret .= ".globl $name\n";
$ret .= ".type $name,\@function";
- $dotinlocallabels = 1;
last;
};
- /linux.*64/ && do { $ret .= ".globl .$name\n";
- $ret .= ".type .$name,\@function\n";
+ /linux.*64/ && do { $ret .= ".globl $name\n";
+ $ret .= ".type $name,\@function\n";
$ret .= ".section \".opd\",\"aw\"\n";
- $ret .= ".globl $name\n";
$ret .= ".align 3\n";
$ret .= "$name:\n";
$ret .= ".quad .$name,.TOC.\@tocbase,0\n";
$ret .= ".previous\n";
$name = ".$name";
- $dotinlocallabels = 1;
last;
};
}
$$global = $name;
$ret;
};
+my $text = sub {
+ ($flavour =~ /aix/) ? ".csect" : ".text";
+};
my $machine = sub {
my $junk = shift;
my $arch = shift;
- $arch = "ppc970" if ($arch eq "any" and $flavour =~ /osx/);
+ if ($flavour =~ /osx/)
+ { $arch =~ s/\"//g;
+ $arch = ($flavour=~/64/) ? "ppc970-64" : "ppc970" if ($arch eq "any");
+ }
".machine $arch";
};
+my $size = sub {
+ if ($flavour =~ /linux.*32/)
+ { shift;
+ ".size " . join(",",@_);
+ }
+ else
+ { ""; }
+};
+my $asciz = sub {
+ shift;
+ my $line = join(",",@_);
+ if ($line =~ /^"(.*)"$/)
+ { ".byte " . join(",",unpack("C*",$1),0) . "\n.align 2"; }
+ else
+ { ""; }
+};
################################################################
# simplified mnemonics not handled by at least one assembler
my $cmplw = sub {
my $f = shift;
my $cr = 0; $cr = shift if ($#_>1);
- " cmpl$f ".join(',',$cr,0,@_);
-};
-my $cmpld = sub {
- my $f = shift;
- my $cr = 0; $cr = shift if ($#_>1);
- " cmpl$f ".join(',',$cr,1,@_);
+ # Some out-of-date 32-bit GNU assembler just can't handle cmplw...
+ ($flavour =~ /linux.*32/) ?
+ " .long ".sprintf "0x%x",31<<26|$cr<<23|$_[0]<<16|$_[1]<<11|64 :
+ " cmplw ".join(',',$cr,@_);
};
my $bdnz = sub {
my $f = shift;
- my $bo = $f=~/[\+\-]/ ? 17 : 16;
+ my $bo = $f=~/[\+\-]/ ? 16+9 : 16; # optional "to be taken" hint
" bc $bo,0,".shift;
+} if ($flavour!~/linux/);
+my $bltlr = sub {
+ my $f = shift;
+ my $bo = $f=~/\-/ ? 12+2 : 12; # optional "not to be taken" hint
+ ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints
+ " .long ".sprintf "0x%x",19<<26|$bo<<21|16<<1 :
+ " bclr $bo,0";
+};
+my $bnelr = sub {
+ my $f = shift;
+ my $bo = $f=~/\-/ ? 4+2 : 4; # optional "not to be taken" hint
+ ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints
+ " .long ".sprintf "0x%x",19<<26|$bo<<21|2<<16|16<<1 :
+ " bclr $bo,2";
+};
+my $beqlr = sub {
+ my $f = shift;
+ my $bo = $f=~/-/ ? 12+2 : 12; # optional "not to be taken" hint
+ ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints
+ " .long ".sprintf "0x%X",19<<26|$bo<<21|2<<16|16<<1 :
+ " bclr $bo,2";
+};
+# GNU assembler can't handle extrdi rA,rS,16,48, or when sum of last two
+# arguments is 64, with "operand out of range" error.
+my $extrdi = sub {
+ my ($f,$ra,$rs,$n,$b) = @_;
+ $b = ($b+$n)&63; $n = 64-$n;
+ " rldicl $ra,$rs,$b,$n";
};
while($line=<>) {
my $mnemonic = $2;
my $f = $3;
my $opcode = eval("\$$mnemonic");
+ $line =~ s|\bc?[rf]([0-9]+)\b|$1|g if ($c ne "." and $flavour !~ /osx/);
if (ref($opcode) eq 'CODE') { $line = &$opcode($f,split(',',$line)); }
elsif ($mnemonic) { $line = $c.$mnemonic.$f."\t".$line; }
}