1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
|
#!/usr/bin/env perl
# PowerPC assembler distiller by \@dot-asm.
################################################################
# Recognized "flavour"-s are:
#
# linux{32|64}[le] GNU assembler and ELF symbol decorations,
# with little-endian option
# linux64v2 GNU asssembler and big-endian instantiation
# of latest ELF specification
# aix{32|64} AIX assembler and symbol decorations
# osx{32|64} Mac OS X assembler and symbol decoratons
my $flavour = shift;
my $output = shift;
open STDOUT,">$output" || die "can't open $output: $!";
my %GLOBALS;
my %TYPES;
my $dotinlocallabels=($flavour=~/linux/)?1:0;
################################################################
# directives which need special treatment on different platforms
################################################################
my $type = sub {
my ($dir,$name,$type) = @_;
$TYPES{$name} = $type;
if ($flavour =~ /linux/) {
$name =~ s|^\.||;
".type $name,$type";
} else {
"";
}
};
my $globl = sub {
my $junk = shift;
my $name = shift;
my $global = \$GLOBALS{$name};
my $type = \$TYPES{$name};
my $ret;
$name =~ s|^\.||;
SWITCH: for ($flavour) {
/aix/ && do { if (!$$type) {
$$type = "\@function";
}
if ($$type =~ /function/) {
$name = ".$name";
}
last;
};
/osx/ && do { $name = "_$name";
last;
};
/linux.*(32|64(le|v2))/
&& do { $ret .= ".globl $name";
if (!$$type) {
$ret .= "\n.type $name,\@function";
$$type = "\@function";
}
last;
};
/linux.*64/ && do { $ret .= ".globl $name";
if (!$$type) {
$ret .= "\n.type $name,\@function";
$$type = "\@function";
}
if ($$type =~ /function/) {
$ret .= "\n.section \".opd\",\"aw\"";
$ret .= "\n.align 3";
$ret .= "\n$name:";
$ret .= "\n.quad .$name,.TOC.\@tocbase,0";
$ret .= "\n.previous";
$name = ".$name";
}
last;
};
}
$ret = ".globl $name" if (!$ret);
$$global = $name;
$ret;
};
my $text = sub {
my $ret = ($flavour =~ /aix/) ? ".csect\t.text[PR],7" : ".text";
$ret = ".abiversion 2\n".$ret if ($flavour =~ /linux.*64(le|v2)/);
$ret;
};
my $machine = sub {
my $junk = shift;
my $arch = shift;
if ($flavour =~ /osx/)
{ $arch =~ s/\"//g;
$arch = ($flavour=~/64/) ? "ppc970-64" : "ppc970" if ($arch eq "any");
}
".machine $arch";
};
my $size = sub {
if ($flavour =~ /linux/)
{ shift;
my $name = shift;
my $real = $GLOBALS{$name} ? \$GLOBALS{$name} : \$name;
my $ret = ".size $$real,.-$$real";
$name =~ s|^\.||;
if ($$real ne $name) {
$ret .= "\n.size $name,.-$$real";
}
$ret;
}
else
{ ""; }
};
my $asciz = sub {
shift;
my $line = join(",",@_);
if ($line =~ /^"(.*)"$/)
{ ".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=~/le$/o?".long\t$lo,$hi":".long\t$hi,$lo"); }
else
{ push(@ret,".quad $lo"); }
}
join("\n",@ret);
};
################################################################
# simplified mnemonics not handled by at least one assembler
################################################################
my $cmplw = sub {
my $f = shift;
my $cr = 0; $cr = shift if ($#_>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=~/[\+\-]/ ? 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";
};
my $vmr = sub {
my ($f,$vx,$vy) = @_;
" vor $vx,$vy,$vy";
};
# Some ABIs specify vrsave, special-purpose register #256, as reserved
# for system use.
my $no_vrsave = ($flavour =~ /aix|linux64(le|v2)/);
my $mtspr = sub {
my ($f,$idx,$ra) = @_;
if ($idx == 256 && $no_vrsave) {
" or $ra,$ra,$ra";
} else {
" mtspr $idx,$ra";
}
};
my $mfspr = sub {
my ($f,$rd,$idx) = @_;
if ($idx == 256 && $no_vrsave) {
" li $rd,-1";
} else {
" mfspr $rd,$idx";
}
};
# PowerISA 2.06 stuff
sub vsxmem_op {
my ($f, $vrt, $ra, $rb, $op) = @_;
" .long ".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|($rb<<11)|($op*2+1);
}
# made-up unaligned memory reference AltiVec/VMX instructions
my $lvx_u = sub { vsxmem_op(@_, 844); }; # lxvd2x
my $stvx_u = sub { vsxmem_op(@_, 972); }; # stxvd2x
my $lvdx_u = sub { vsxmem_op(@_, 588); }; # lxsdx
my $stvdx_u = sub { vsxmem_op(@_, 716); }; # stxsdx
my $lvx_4w = sub { vsxmem_op(@_, 780); }; # lxvw4x
my $stvx_4w = sub { vsxmem_op(@_, 908); }; # stxvw4x
my $lvx_splt = sub { vsxmem_op(@_, 332); }; # lxvdsx
# VSX instruction[s] masqueraded as made-up AltiVec/VMX
my $vpermdi = sub { # xxpermdi
my ($f, $vrt, $vra, $vrb, $dm) = @_;
$dm = oct($dm) if ($dm =~ /^0/);
" .long ".sprintf "0x%X",(60<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|($dm<<8)|(10<<3)|7;
};
# PowerISA 2.07 stuff
sub vcrypto_op {
my ($f, $vrt, $vra, $vrb, $op) = @_;
" .long ".sprintf "0x%X",(4<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|$op;
}
sub vfour {
my ($f, $vrt, $vra, $vrb, $vrc, $op) = @_;
" .long ".sprintf "0x%X",(4<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|($vrc<<6)|$op;
};
my $vcipher = sub { vcrypto_op(@_, 1288); };
my $vcipherlast = sub { vcrypto_op(@_, 1289); };
my $vncipher = sub { vcrypto_op(@_, 1352); };
my $vncipherlast= sub { vcrypto_op(@_, 1353); };
my $vsbox = sub { vcrypto_op(@_, 0, 1480); };
my $vshasigmad = sub { my ($st,$six)=splice(@_,-2); vcrypto_op(@_, $st<<4|$six, 1730); };
my $vshasigmaw = sub { my ($st,$six)=splice(@_,-2); vcrypto_op(@_, $st<<4|$six, 1666); };
my $vpmsumb = sub { vcrypto_op(@_, 1032); };
my $vpmsumd = sub { vcrypto_op(@_, 1224); };
my $vpmsubh = sub { vcrypto_op(@_, 1096); };
my $vpmsumw = sub { vcrypto_op(@_, 1160); };
# These are not really crypto, but vcrypto_op template works
my $vaddudm = sub { vcrypto_op(@_, 192); };
my $vadduqm = sub { vcrypto_op(@_, 256); };
my $vmuleuw = sub { vcrypto_op(@_, 648); };
my $vmulouw = sub { vcrypto_op(@_, 136); };
my $vrld = sub { vcrypto_op(@_, 196); };
my $vsld = sub { vcrypto_op(@_, 1476); };
my $vsrd = sub { vcrypto_op(@_, 1732); };
my $vsubudm = sub { vcrypto_op(@_, 1216); };
my $vaddcuq = sub { vcrypto_op(@_, 320); };
my $vaddeuqm = sub { vfour(@_,60); };
my $vaddecuq = sub { vfour(@_,61); };
my $vmrgew = sub { vfour(@_,0,1932); };
my $vmrgow = sub { vfour(@_,0,1676); };
my $mtsle = sub {
my ($f, $arg) = @_;
" .long ".sprintf "0x%X",(31<<26)|($arg<<21)|(147*2);
};
# VSX instructions masqueraded as AltiVec/VMX
my $mtvrd = sub {
my ($f, $vrt, $ra) = @_;
" .long ".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|(179<<1)|1;
};
my $mtvrwz = sub {
my ($f, $vrt, $ra) = @_;
" .long ".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|(243<<1)|1;
};
my $lvwzx_u = sub { vsxmem_op(@_, 12); }; # lxsiwzx
my $stvwx_u = sub { vsxmem_op(@_, 140); }; # stxsiwx
# PowerISA 3.0 stuff
my $maddhdu = sub { vfour(@_,49); };
my $maddld = sub { vfour(@_,51); };
my $darn = sub {
my ($f, $rt, $l) = @_;
" .long ".sprintf "0x%X",(31<<26)|($rt<<21)|($l<<16)|(755<<1);
};
my $iseleq = sub {
my ($f, $rt, $ra, $rb) = @_;
" .long ".sprintf "0x%X",(31<<26)|($rt<<21)|($ra<<16)|($rb<<11)|(2<<6)|30;
};
# VSX instruction[s] masqueraded as made-up AltiVec/VMX
my $vspltib = sub { # xxspltib
my ($f, $vrt, $imm8) = @_;
$imm8 = oct($imm8) if ($imm8 =~ /^0/);
$imm8 &= 0xff;
" .long ".sprintf "0x%X",(60<<26)|($vrt<<21)|($imm8<<11)|(360<<1)|1;
};
# PowerISA 3.0B stuff
my $addex = sub {
my ($f, $rt, $ra, $rb, $cy) = @_; # only cy==0 is specified in 3.0B
" .long ".sprintf "0x%X",(31<<26)|($rt<<21)|($ra<<16)|($rb<<11)|($cy<<9)|(170<<1);
};
my $vmsumudm = sub { vfour(@_,35); };
while($line=<>) {
$line =~ s|[#!;].*$||; # get rid of asm-style comments...
$line =~ s|/\*.*\*/||; # ... and C-style comments...
$line =~ s|^\s+||; # ... and skip white spaces in beginning...
$line =~ s|\s+$||; # ... and at the end
{
$line =~ s|\.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) {
my $xlated = ($GLOBALS{$label} or $label);
print "$xlated:";
if ($flavour =~ /linux.*64(le|v2)/) {
if ($TYPES{$label} =~ /function/) {
printf "\n.localentry %s,0\n",$xlated;
}
}
}
}
{
$line =~ s|^\s*(\.?)(\w+)([\.\+\-]?)\s*||;
my $c = $1; $c = "\t" if ($c eq "");
my $mnemonic = $2;
my $f = $3;
my $opcode = eval("\$$mnemonic");
$line =~ s/\b(c?[rf]|v|vs)([0-9]+)\b/$2/g if ($c ne "." and $flavour !~ /osx/);
if (ref($opcode) eq 'CODE') { $line = &$opcode($f,split(/,\s*/,$line)); }
elsif ($mnemonic) { $line = $c.$mnemonic.$f."\t".$line; }
}
print $line if ($line);
print "\n";
}
close STDOUT;
|
