# 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 .= ".size $name,24\n";
$ret .= ".previous\n";
$name = ".$name";
- $dotinlocallabels = 1;
last;
};
}
}
".machine $arch";
};
+my $size = sub {
+ if ($flavour =~ /linux/)
+ { shift;
+ my $name = shift; $name =~ s|^[\.\_]||;
+ my $ret = ".size $name,.-".($flavour=~/64/?".":"").$name;
+ $ret .= "\n.size .$name,.-.$name" if ($flavour=~/64/);
+ $ret;
+ }
+ else
+ { ""; }
+};
my $asciz = sub {
shift;
my $line = join(",",@_);
if ($line =~ /^"(.*)"$/)
- { ".byte " . join(",",unpack("C*",$1),0); }
+ { ".byte " . join(",",unpack("C*",$1),0) . "\n.align 2"; }
else
{ ""; }
};
+my $quad = sub {
+ shift;
+ my @ret;
+ my ($hi,$lo);
+ for (@_) {
+ if (/^0x([0-9a-f]*?)([0-9a-f]{1,8})$/io)
+ { $hi=$1?"0x$1":"0"; $lo="0x$2"; }
+ elsif (/^([0-9]+)$/o)
+ { $hi=$1>>32; $lo=$1&0xffffffff; } # error-prone with 32-bit perl
+ else
+ { $hi=undef; $lo=$_; }
+
+ if (defined($hi))
+ { push(@ret,$flavour=~/lei$/o?".long\t$lo,$hi":".long\t$hi,$lo"); }
+ else
+ { push(@ret,".quad $lo"); }
+ }
+ join("\n",@ret);
+};
################################################################
# simplified mnemonics not handled by at least one assembler
};
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?r([0-9]+)\b|$1|g if ($c ne "." and $flavour !~ /osx/);
+ $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; }
}