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Commit | Line | Data |
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2c5d4daa AP |
1 | #!/usr/bin/env perl |
2 | ||
3 | # PowerPC assembler distiller by <appro>. | |
4 | ||
addd641f | 5 | my $flavour = shift; |
2c5d4daa AP |
6 | my $output = shift; |
7 | open STDOUT,">$output" || die "can't open $output: $!"; | |
8 | ||
2c5d4daa | 9 | my %GLOBALS; |
c6149e2f | 10 | my $dotinlocallabels=($flavour=~/linux/)?1:0; |
2c5d4daa AP |
11 | |
12 | ################################################################ | |
13 | # directives which need special treatment on different platforms | |
14 | ################################################################ | |
15 | my $globl = sub { | |
16 | my $junk = shift; | |
17 | my $name = shift; | |
18 | my $global = \$GLOBALS{$name}; | |
19 | my $ret; | |
20 | ||
21 | $name =~ s|^[\.\_]||; | |
22 | ||
23 | SWITCH: for ($flavour) { | |
24 | /aix/ && do { $name = ".$name"; | |
25 | last; | |
26 | }; | |
27 | /osx/ && do { $name = "_$name"; | |
28 | last; | |
29 | }; | |
30 | /linux.*32/ && do { $ret .= ".globl $name\n"; | |
31 | $ret .= ".type $name,\@function"; | |
2c5d4daa AP |
32 | last; |
33 | }; | |
a3e07010 AP |
34 | /linux.*64/ && do { $ret .= ".globl $name\n"; |
35 | $ret .= ".type $name,\@function\n"; | |
2c5d4daa | 36 | $ret .= ".section \".opd\",\"aw\"\n"; |
2c5d4daa AP |
37 | $ret .= ".align 3\n"; |
38 | $ret .= "$name:\n"; | |
39 | $ret .= ".quad .$name,.TOC.\@tocbase,0\n"; | |
2c5d4daa AP |
40 | $ret .= ".previous\n"; |
41 | ||
42 | $name = ".$name"; | |
2c5d4daa AP |
43 | last; |
44 | }; | |
45 | } | |
46 | ||
47 | $ret = ".globl $name" if (!$ret); | |
48 | $$global = $name; | |
49 | $ret; | |
50 | }; | |
fe716ba6 AP |
51 | my $text = sub { |
52 | ($flavour =~ /aix/) ? ".csect" : ".text"; | |
53 | }; | |
2c5d4daa AP |
54 | my $machine = sub { |
55 | my $junk = shift; | |
56 | my $arch = shift; | |
67d99090 AP |
57 | if ($flavour =~ /osx/) |
58 | { $arch =~ s/\"//g; | |
59 | $arch = ($flavour=~/64/) ? "ppc970-64" : "ppc970" if ($arch eq "any"); | |
60 | } | |
2c5d4daa AP |
61 | ".machine $arch"; |
62 | }; | |
a3e07010 | 63 | my $size = sub { |
d6019e16 | 64 | if ($flavour =~ /linux/) |
a3e07010 | 65 | { shift; |
d6019e16 AP |
66 | my $name = shift; $name =~ s|^[\.\_]||; |
67 | my $ret = ".size $name,.-".($flavour=~/64/?".":"").$name; | |
68 | $ret .= "\n.size .$name,.-.$name" if ($flavour=~/64/); | |
69 | $ret; | |
a3e07010 AP |
70 | } |
71 | else | |
72 | { ""; } | |
73 | }; | |
d68ff710 AP |
74 | my $asciz = sub { |
75 | shift; | |
76 | my $line = join(",",@_); | |
77 | if ($line =~ /^"(.*)"$/) | |
287a9ee7 | 78 | { ".byte " . join(",",unpack("C*",$1),0) . "\n.align 2"; } |
d68ff710 AP |
79 | else |
80 | { ""; } | |
81 | }; | |
8ff8a829 AP |
82 | my $quad = sub { |
83 | shift; | |
84 | my @ret; | |
85 | my ($hi,$lo); | |
86 | for (@_) { | |
87 | if (/^0x([0-9a-f]*?)([0-9a-f]{1,8})$/io) | |
88 | { $hi=$1?"0x$1":"0"; $lo="0x$2"; } | |
89 | elsif (/^([0-9]+)$/o) | |
90 | { $hi=$1>>32; $lo=$1&0xffffffff; } # error-prone with 32-bit perl | |
91 | else | |
92 | { $hi=undef; $lo=$_; } | |
93 | ||
94 | if (defined($hi)) | |
0e0a1053 | 95 | { push(@ret,$flavour=~/le$/o?".long\t$lo,$hi":".long\t$hi,$lo"); } |
8ff8a829 AP |
96 | else |
97 | { push(@ret,".quad $lo"); } | |
98 | } | |
99 | join("\n",@ret); | |
100 | }; | |
2c5d4daa AP |
101 | |
102 | ################################################################ | |
103 | # simplified mnemonics not handled by at least one assembler | |
104 | ################################################################ | |
105 | my $cmplw = sub { | |
106 | my $f = shift; | |
107 | my $cr = 0; $cr = shift if ($#_>1); | |
67d99090 AP |
108 | # Some out-of-date 32-bit GNU assembler just can't handle cmplw... |
109 | ($flavour =~ /linux.*32/) ? | |
110 | " .long ".sprintf "0x%x",31<<26|$cr<<23|$_[0]<<16|$_[1]<<11|64 : | |
111 | " cmplw ".join(',',$cr,@_); | |
2c5d4daa AP |
112 | }; |
113 | my $bdnz = sub { | |
114 | my $f = shift; | |
0fcb905b | 115 | my $bo = $f=~/[\+\-]/ ? 16+9 : 16; # optional "to be taken" hint |
2c5d4daa | 116 | " bc $bo,0,".shift; |
0fcb905b AP |
117 | } if ($flavour!~/linux/); |
118 | my $bltlr = sub { | |
119 | my $f = shift; | |
120 | my $bo = $f=~/\-/ ? 12+2 : 12; # optional "not to be taken" hint | |
121 | ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints | |
122 | " .long ".sprintf "0x%x",19<<26|$bo<<21|16<<1 : | |
123 | " bclr $bo,0"; | |
124 | }; | |
125 | my $bnelr = sub { | |
126 | my $f = shift; | |
127 | my $bo = $f=~/\-/ ? 4+2 : 4; # optional "not to be taken" hint | |
128 | ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints | |
129 | " .long ".sprintf "0x%x",19<<26|$bo<<21|2<<16|16<<1 : | |
130 | " bclr $bo,2"; | |
131 | }; | |
7676eebf AP |
132 | my $beqlr = sub { |
133 | my $f = shift; | |
134 | my $bo = $f=~/-/ ? 12+2 : 12; # optional "not to be taken" hint | |
135 | ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints | |
136 | " .long ".sprintf "0x%X",19<<26|$bo<<21|2<<16|16<<1 : | |
137 | " bclr $bo,2"; | |
138 | }; | |
0fcb905b AP |
139 | # GNU assembler can't handle extrdi rA,rS,16,48, or when sum of last two |
140 | # arguments is 64, with "operand out of range" error. | |
141 | my $extrdi = sub { | |
142 | my ($f,$ra,$rs,$n,$b) = @_; | |
143 | $b = ($b+$n)&63; $n = 64-$n; | |
144 | " rldicl $ra,$rs,$b,$n"; | |
2c5d4daa AP |
145 | }; |
146 | ||
147 | while($line=<>) { | |
148 | ||
149 | $line =~ s|[#!;].*$||; # get rid of asm-style comments... | |
150 | $line =~ s|/\*.*\*/||; # ... and C-style comments... | |
151 | $line =~ s|^\s+||; # ... and skip white spaces in beginning... | |
152 | $line =~ s|\s+$||; # ... and at the end | |
153 | ||
154 | { | |
155 | $line =~ s|\b\.L(\w+)|L$1|g; # common denominator for Locallabel | |
156 | $line =~ s|\bL(\w+)|\.L$1|g if ($dotinlocallabels); | |
157 | } | |
158 | ||
159 | { | |
160 | $line =~ s|(^[\.\w]+)\:\s*||; | |
161 | my $label = $1; | |
162 | printf "%s:",($GLOBALS{$label} or $label) if ($label); | |
163 | } | |
164 | ||
165 | { | |
166 | $line =~ s|^\s*(\.?)(\w+)([\.\+\-]?)\s*||; | |
167 | my $c = $1; $c = "\t" if ($c eq ""); | |
168 | my $mnemonic = $2; | |
169 | my $f = $3; | |
170 | my $opcode = eval("\$$mnemonic"); | |
0fcb905b | 171 | $line =~ s|\bc?[rf]([0-9]+)\b|$1|g if ($c ne "." and $flavour !~ /osx/); |
2c5d4daa AP |
172 | if (ref($opcode) eq 'CODE') { $line = &$opcode($f,split(',',$line)); } |
173 | elsif ($mnemonic) { $line = $c.$mnemonic.$f."\t".$line; } | |
174 | } | |
175 | ||
176 | print $line if ($line); | |
177 | print "\n"; | |
178 | } | |
179 | ||
180 | close STDOUT; |