Commit | Line | Data |
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5c380d62 LB |
1 | #!/usr/bin/env perl |
2 | ||
3 | # PowerPC assembler distiller by <appro>. | |
4 | ||
5 | my $flavour = shift; | |
6 | my $output = shift; | |
7 | open STDOUT,">$output" || die "can't open $output: $!"; | |
8 | ||
9 | my %GLOBALS; | |
10 | my $dotinlocallabels=($flavour=~/linux/)?1:0; | |
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 | }; | |
f42613c6 HX |
30 | /linux/ |
31 | && do { $ret = "_GLOBAL($name)"; | |
5c380d62 LB |
32 | last; |
33 | }; | |
34 | } | |
35 | ||
f42613c6 | 36 | $ret = ".globl $name\nalign 5\n$name:" if (!$ret); |
5c380d62 LB |
37 | $$global = $name; |
38 | $ret; | |
39 | }; | |
40 | my $text = sub { | |
41 | my $ret = ($flavour =~ /aix/) ? ".csect\t.text[PR],7" : ".text"; | |
42 | $ret = ".abiversion 2\n".$ret if ($flavour =~ /linux.*64le/); | |
43 | $ret; | |
44 | }; | |
45 | my $machine = sub { | |
46 | my $junk = shift; | |
47 | my $arch = shift; | |
48 | if ($flavour =~ /osx/) | |
49 | { $arch =~ s/\"//g; | |
50 | $arch = ($flavour=~/64/) ? "ppc970-64" : "ppc970" if ($arch eq "any"); | |
51 | } | |
52 | ".machine $arch"; | |
53 | }; | |
54 | my $size = sub { | |
55 | if ($flavour =~ /linux/) | |
56 | { shift; | |
57 | my $name = shift; $name =~ s|^[\.\_]||; | |
58 | my $ret = ".size $name,.-".($flavour=~/64$/?".":"").$name; | |
59 | $ret .= "\n.size .$name,.-.$name" if ($flavour=~/64$/); | |
60 | $ret; | |
61 | } | |
62 | else | |
63 | { ""; } | |
64 | }; | |
65 | my $asciz = sub { | |
66 | shift; | |
67 | my $line = join(",",@_); | |
68 | if ($line =~ /^"(.*)"$/) | |
69 | { ".byte " . join(",",unpack("C*",$1),0) . "\n.align 2"; } | |
70 | else | |
71 | { ""; } | |
72 | }; | |
73 | my $quad = sub { | |
74 | shift; | |
75 | my @ret; | |
76 | my ($hi,$lo); | |
77 | for (@_) { | |
78 | if (/^0x([0-9a-f]*?)([0-9a-f]{1,8})$/io) | |
79 | { $hi=$1?"0x$1":"0"; $lo="0x$2"; } | |
80 | elsif (/^([0-9]+)$/o) | |
81 | { $hi=$1>>32; $lo=$1&0xffffffff; } # error-prone with 32-bit perl | |
82 | else | |
83 | { $hi=undef; $lo=$_; } | |
84 | ||
85 | if (defined($hi)) | |
86 | { push(@ret,$flavour=~/le$/o?".long\t$lo,$hi":".long\t$hi,$lo"); } | |
87 | else | |
88 | { push(@ret,".quad $lo"); } | |
89 | } | |
90 | join("\n",@ret); | |
91 | }; | |
92 | ||
93 | ################################################################ | |
94 | # simplified mnemonics not handled by at least one assembler | |
95 | ################################################################ | |
96 | my $cmplw = sub { | |
97 | my $f = shift; | |
98 | my $cr = 0; $cr = shift if ($#_>1); | |
99 | # Some out-of-date 32-bit GNU assembler just can't handle cmplw... | |
100 | ($flavour =~ /linux.*32/) ? | |
101 | " .long ".sprintf "0x%x",31<<26|$cr<<23|$_[0]<<16|$_[1]<<11|64 : | |
102 | " cmplw ".join(',',$cr,@_); | |
103 | }; | |
104 | my $bdnz = sub { | |
105 | my $f = shift; | |
106 | my $bo = $f=~/[\+\-]/ ? 16+9 : 16; # optional "to be taken" hint | |
107 | " bc $bo,0,".shift; | |
108 | } if ($flavour!~/linux/); | |
109 | my $bltlr = sub { | |
110 | my $f = shift; | |
111 | my $bo = $f=~/\-/ ? 12+2 : 12; # optional "not to be taken" hint | |
112 | ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints | |
113 | " .long ".sprintf "0x%x",19<<26|$bo<<21|16<<1 : | |
114 | " bclr $bo,0"; | |
115 | }; | |
116 | my $bnelr = sub { | |
117 | my $f = shift; | |
118 | my $bo = $f=~/\-/ ? 4+2 : 4; # optional "not to be taken" hint | |
119 | ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints | |
120 | " .long ".sprintf "0x%x",19<<26|$bo<<21|2<<16|16<<1 : | |
121 | " bclr $bo,2"; | |
122 | }; | |
123 | my $beqlr = sub { | |
124 | my $f = shift; | |
125 | my $bo = $f=~/-/ ? 12+2 : 12; # optional "not to be taken" hint | |
126 | ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints | |
127 | " .long ".sprintf "0x%X",19<<26|$bo<<21|2<<16|16<<1 : | |
128 | " bclr $bo,2"; | |
129 | }; | |
130 | # GNU assembler can't handle extrdi rA,rS,16,48, or when sum of last two | |
131 | # arguments is 64, with "operand out of range" error. | |
132 | my $extrdi = sub { | |
133 | my ($f,$ra,$rs,$n,$b) = @_; | |
134 | $b = ($b+$n)&63; $n = 64-$n; | |
135 | " rldicl $ra,$rs,$b,$n"; | |
136 | }; | |
137 | my $vmr = sub { | |
138 | my ($f,$vx,$vy) = @_; | |
139 | " vor $vx,$vy,$vy"; | |
140 | }; | |
141 | ||
5ca55738 PFS |
142 | # Some ABIs specify vrsave, special-purpose register #256, as reserved |
143 | # for system use. | |
975f57fd | 144 | my $no_vrsave = ($flavour =~ /linux-ppc64le/); |
5ca55738 PFS |
145 | my $mtspr = sub { |
146 | my ($f,$idx,$ra) = @_; | |
147 | if ($idx == 256 && $no_vrsave) { | |
148 | " or $ra,$ra,$ra"; | |
149 | } else { | |
150 | " mtspr $idx,$ra"; | |
151 | } | |
152 | }; | |
153 | my $mfspr = sub { | |
154 | my ($f,$rd,$idx) = @_; | |
155 | if ($idx == 256 && $no_vrsave) { | |
156 | " li $rd,-1"; | |
157 | } else { | |
158 | " mfspr $rd,$idx"; | |
159 | } | |
160 | }; | |
161 | ||
5c380d62 LB |
162 | # PowerISA 2.06 stuff |
163 | sub vsxmem_op { | |
164 | my ($f, $vrt, $ra, $rb, $op) = @_; | |
165 | " .long ".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|($rb<<11)|($op*2+1); | |
166 | } | |
167 | # made-up unaligned memory reference AltiVec/VMX instructions | |
168 | my $lvx_u = sub { vsxmem_op(@_, 844); }; # lxvd2x | |
169 | my $stvx_u = sub { vsxmem_op(@_, 972); }; # stxvd2x | |
170 | my $lvdx_u = sub { vsxmem_op(@_, 588); }; # lxsdx | |
171 | my $stvdx_u = sub { vsxmem_op(@_, 716); }; # stxsdx | |
172 | my $lvx_4w = sub { vsxmem_op(@_, 780); }; # lxvw4x | |
173 | my $stvx_4w = sub { vsxmem_op(@_, 908); }; # stxvw4x | |
174 | ||
175 | # PowerISA 2.07 stuff | |
176 | sub vcrypto_op { | |
177 | my ($f, $vrt, $vra, $vrb, $op) = @_; | |
178 | " .long ".sprintf "0x%X",(4<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|$op; | |
179 | } | |
180 | my $vcipher = sub { vcrypto_op(@_, 1288); }; | |
181 | my $vcipherlast = sub { vcrypto_op(@_, 1289); }; | |
182 | my $vncipher = sub { vcrypto_op(@_, 1352); }; | |
183 | my $vncipherlast= sub { vcrypto_op(@_, 1353); }; | |
184 | my $vsbox = sub { vcrypto_op(@_, 0, 1480); }; | |
185 | my $vshasigmad = sub { my ($st,$six)=splice(@_,-2); vcrypto_op(@_, $st<<4|$six, 1730); }; | |
186 | my $vshasigmaw = sub { my ($st,$six)=splice(@_,-2); vcrypto_op(@_, $st<<4|$six, 1666); }; | |
187 | my $vpmsumb = sub { vcrypto_op(@_, 1032); }; | |
188 | my $vpmsumd = sub { vcrypto_op(@_, 1224); }; | |
189 | my $vpmsubh = sub { vcrypto_op(@_, 1096); }; | |
190 | my $vpmsumw = sub { vcrypto_op(@_, 1160); }; | |
191 | my $vaddudm = sub { vcrypto_op(@_, 192); }; | |
73613a81 | 192 | my $vadduqm = sub { vcrypto_op(@_, 256); }; |
5c380d62 LB |
193 | |
194 | my $mtsle = sub { | |
195 | my ($f, $arg) = @_; | |
196 | " .long ".sprintf "0x%X",(31<<26)|($arg<<21)|(147*2); | |
197 | }; | |
198 | ||
f42613c6 HX |
199 | print "#include <asm/ppc_asm.h>\n" if $flavour =~ /linux/; |
200 | ||
5c380d62 LB |
201 | while($line=<>) { |
202 | ||
203 | $line =~ s|[#!;].*$||; # get rid of asm-style comments... | |
204 | $line =~ s|/\*.*\*/||; # ... and C-style comments... | |
205 | $line =~ s|^\s+||; # ... and skip white spaces in beginning... | |
206 | $line =~ s|\s+$||; # ... and at the end | |
207 | ||
208 | { | |
209 | $line =~ s|\b\.L(\w+)|L$1|g; # common denominator for Locallabel | |
210 | $line =~ s|\bL(\w+)|\.L$1|g if ($dotinlocallabels); | |
211 | } | |
212 | ||
5c380d62 LB |
213 | { |
214 | $line =~ s|^\s*(\.?)(\w+)([\.\+\-]?)\s*||; | |
215 | my $c = $1; $c = "\t" if ($c eq ""); | |
216 | my $mnemonic = $2; | |
217 | my $f = $3; | |
218 | my $opcode = eval("\$$mnemonic"); | |
219 | $line =~ s/\b(c?[rf]|v|vs)([0-9]+)\b/$2/g if ($c ne "." and $flavour !~ /osx/); | |
220 | if (ref($opcode) eq 'CODE') { $line = &$opcode($f,split(',',$line)); } | |
221 | elsif ($mnemonic) { $line = $c.$mnemonic.$f."\t".$line; } | |
222 | } | |
223 | ||
224 | print $line if ($line); | |
225 | print "\n"; | |
226 | } | |
227 | ||
228 | close STDOUT; |