141 lines
3.0 KiB
Perl
Executable File
141 lines
3.0 KiB
Perl
Executable File
#!/usr/bin/env perl
|
|
|
|
# ARM assembler distiller by <appro>.
|
|
|
|
my $flavour = shift;
|
|
my $output = shift;
|
|
open STDOUT,">$output" || die "can't open $output: $!";
|
|
|
|
$flavour = "linux32" if (!$flavour or $flavour eq "void");
|
|
|
|
my %GLOBALS;
|
|
my $dotinlocallabels=($flavour=~/linux/)?1:0;
|
|
|
|
################################################################
|
|
# directives which need special treatment on different platforms
|
|
################################################################
|
|
my $arch = sub {
|
|
if ($flavour =~ /linux/) { ".arch\t".join(',',@_); }
|
|
else { ""; }
|
|
};
|
|
my $globl = sub {
|
|
my $name = shift;
|
|
my $global = \$GLOBALS{$name};
|
|
my $ret;
|
|
|
|
SWITCH: for ($flavour) {
|
|
/ios/ && do { $name = "_$name";
|
|
last;
|
|
};
|
|
}
|
|
|
|
$ret = ".globl $name" if (!$ret);
|
|
$$global = $name;
|
|
$ret;
|
|
};
|
|
my $global = $globl;
|
|
my $extern = sub {
|
|
&$globl(@_);
|
|
return; # return nothing
|
|
};
|
|
my $type = sub {
|
|
if ($flavour =~ /linux/) { ".type\t".join(',',@_); }
|
|
else { ""; }
|
|
};
|
|
my $size = sub {
|
|
if ($flavour =~ /linux/) { ".size\t".join(',',@_); }
|
|
else { ""; }
|
|
};
|
|
my $inst = sub {
|
|
if ($flavour =~ /linux/) { ".inst\t".join(',',@_); }
|
|
else { ".long\t".join(',',@_); }
|
|
};
|
|
my $asciz = sub {
|
|
my $line = join(",",@_);
|
|
if ($line =~ /^"(.*)"$/)
|
|
{ ".byte " . join(",",unpack("C*",$1),0) . "\n.align 2"; }
|
|
else
|
|
{ ""; }
|
|
};
|
|
|
|
sub range {
|
|
my ($r,$sfx,$start,$end) = @_;
|
|
|
|
join(",",map("$r$_$sfx",($start..$end)));
|
|
}
|
|
|
|
sub parse_args {
|
|
my $line = shift;
|
|
my @ret = ();
|
|
|
|
pos($line)=0;
|
|
|
|
while (1) {
|
|
if ($line =~ m/\G\[/gc) {
|
|
$line =~ m/\G([^\]]+\][^,]*)\s*/g;
|
|
push @ret,"[$1";
|
|
}
|
|
elsif ($line =~ m/\G\{/gc) {
|
|
$line =~ m/\G([^\}]+\}[^,]*)\s*/g;
|
|
my $arg = $1;
|
|
$arg =~ s/([rdqv])([0-9]+)([^\-]*)\-\1([0-9]+)\3/range($1,$3,$2,$4)/ge;
|
|
push @ret,"{$arg";
|
|
}
|
|
elsif ($line =~ m/\G([^,]+)\s*/g) {
|
|
push @ret,$1;
|
|
}
|
|
|
|
last if ($line =~ m/\G$/gc);
|
|
|
|
$line =~ m/\G,\s*/g;
|
|
}
|
|
|
|
map {my $s=$_;$s=~s/\b(\w+)/$GLOBALS{$1} or $1/ge;$s} @ret;
|
|
}
|
|
|
|
while($line=<>) {
|
|
|
|
$line =~ s|/\*.*\*/||; # get rid of C-style comments...
|
|
$line =~ s|^\s+||; # ... and skip white spaces in beginning...
|
|
$line =~ s|\s+$||; # ... and at the end
|
|
|
|
{
|
|
$line =~ s|[\b\.]L(\w+)|L$1|g; # common denominator for Locallabel
|
|
$line =~ s|\bL(\w+)|\.L$1|g if ($dotinlocallabels);
|
|
}
|
|
|
|
{
|
|
$line =~ s|(^[\.\w]+)\:\s*||;
|
|
my $label = $1;
|
|
if ($label) {
|
|
printf "%s:",($GLOBALS{$label} or $label);
|
|
}
|
|
}
|
|
|
|
if ($line !~ m/^#/o) {
|
|
$line =~ s|^\s*(\.?)(\S+)\s*||o;
|
|
my $c = $1; $c = "\t" if ($c eq "");
|
|
my $mnemonic = $2;
|
|
my $opcode;
|
|
if ($mnemonic =~ m/([^\.]+)\.([^\.]+)/o) {
|
|
$opcode = eval("\$$1_$2");
|
|
} else {
|
|
$opcode = eval("\$$mnemonic");
|
|
}
|
|
|
|
my @args=parse_args($line);
|
|
|
|
if (ref($opcode) eq 'CODE') {
|
|
$line = &$opcode(@args);
|
|
} elsif ($mnemonic) {
|
|
$line = $c.$mnemonic;
|
|
$line.= "\t".join(',',@args) if ($#args>=0);
|
|
}
|
|
}
|
|
|
|
print $line if ($line);
|
|
print "\n";
|
|
}
|
|
|
|
close STDOUT;
|