Commit | Line | Data |
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5c380d62 | 1 | #!/usr/bin/env perl |
b2441318 | 2 | # SPDX-License-Identifier: GPL-2.0 |
5c380d62 LB |
3 | |
4 | # PowerPC assembler distiller by <appro>. | |
5 | ||
6 | my $flavour = shift; | |
7 | my $output = shift; | |
8 | open STDOUT,">$output" || die "can't open $output: $!"; | |
9 | ||
10 | my %GLOBALS; | |
11 | my $dotinlocallabels=($flavour=~/linux/)?1:0; | |
12 | ||
13 | ################################################################ | |
14 | # directives which need special treatment on different platforms | |
15 | ################################################################ | |
16 | my $globl = sub { | |
17 | my $junk = shift; | |
18 | my $name = shift; | |
19 | my $global = \$GLOBALS{$name}; | |
20 | my $ret; | |
21 | ||
22 | $name =~ s|^[\.\_]||; | |
23 | ||
24 | SWITCH: for ($flavour) { | |
25 | /aix/ && do { $name = ".$name"; | |
26 | last; | |
27 | }; | |
28 | /osx/ && do { $name = "_$name"; | |
29 | last; | |
30 | }; | |
f42613c6 HX |
31 | /linux/ |
32 | && do { $ret = "_GLOBAL($name)"; | |
5c380d62 LB |
33 | last; |
34 | }; | |
35 | } | |
36 | ||
f42613c6 | 37 | $ret = ".globl $name\nalign 5\n$name:" if (!$ret); |
5c380d62 LB |
38 | $$global = $name; |
39 | $ret; | |
40 | }; | |
41 | my $text = sub { | |
42 | my $ret = ($flavour =~ /aix/) ? ".csect\t.text[PR],7" : ".text"; | |
43 | $ret = ".abiversion 2\n".$ret if ($flavour =~ /linux.*64le/); | |
44 | $ret; | |
45 | }; | |
46 | my $machine = sub { | |
47 | my $junk = shift; | |
48 | my $arch = shift; | |
49 | if ($flavour =~ /osx/) | |
50 | { $arch =~ s/\"//g; | |
51 | $arch = ($flavour=~/64/) ? "ppc970-64" : "ppc970" if ($arch eq "any"); | |
52 | } | |
53 | ".machine $arch"; | |
54 | }; | |
55 | my $size = sub { | |
56 | if ($flavour =~ /linux/) | |
57 | { shift; | |
58 | my $name = shift; $name =~ s|^[\.\_]||; | |
59 | my $ret = ".size $name,.-".($flavour=~/64$/?".":"").$name; | |
60 | $ret .= "\n.size .$name,.-.$name" if ($flavour=~/64$/); | |
61 | $ret; | |
62 | } | |
63 | else | |
64 | { ""; } | |
65 | }; | |
66 | my $asciz = sub { | |
67 | shift; | |
68 | my $line = join(",",@_); | |
69 | if ($line =~ /^"(.*)"$/) | |
70 | { ".byte " . join(",",unpack("C*",$1),0) . "\n.align 2"; } | |
71 | else | |
72 | { ""; } | |
73 | }; | |
74 | my $quad = sub { | |
75 | shift; | |
76 | my @ret; | |
77 | my ($hi,$lo); | |
78 | for (@_) { | |
79 | if (/^0x([0-9a-f]*?)([0-9a-f]{1,8})$/io) | |
80 | { $hi=$1?"0x$1":"0"; $lo="0x$2"; } | |
81 | elsif (/^([0-9]+)$/o) | |
82 | { $hi=$1>>32; $lo=$1&0xffffffff; } # error-prone with 32-bit perl | |
83 | else | |
84 | { $hi=undef; $lo=$_; } | |
85 | ||
86 | if (defined($hi)) | |
87 | { push(@ret,$flavour=~/le$/o?".long\t$lo,$hi":".long\t$hi,$lo"); } | |
88 | else | |
89 | { push(@ret,".quad $lo"); } | |
90 | } | |
91 | join("\n",@ret); | |
92 | }; | |
93 | ||
94 | ################################################################ | |
95 | # simplified mnemonics not handled by at least one assembler | |
96 | ################################################################ | |
97 | my $cmplw = sub { | |
98 | my $f = shift; | |
99 | my $cr = 0; $cr = shift if ($#_>1); | |
100 | # Some out-of-date 32-bit GNU assembler just can't handle cmplw... | |
101 | ($flavour =~ /linux.*32/) ? | |
102 | " .long ".sprintf "0x%x",31<<26|$cr<<23|$_[0]<<16|$_[1]<<11|64 : | |
103 | " cmplw ".join(',',$cr,@_); | |
104 | }; | |
105 | my $bdnz = sub { | |
106 | my $f = shift; | |
107 | my $bo = $f=~/[\+\-]/ ? 16+9 : 16; # optional "to be taken" hint | |
108 | " bc $bo,0,".shift; | |
109 | } if ($flavour!~/linux/); | |
110 | my $bltlr = sub { | |
111 | my $f = shift; | |
112 | my $bo = $f=~/\-/ ? 12+2 : 12; # optional "not to be taken" hint | |
113 | ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints | |
114 | " .long ".sprintf "0x%x",19<<26|$bo<<21|16<<1 : | |
115 | " bclr $bo,0"; | |
116 | }; | |
117 | my $bnelr = sub { | |
118 | my $f = shift; | |
119 | my $bo = $f=~/\-/ ? 4+2 : 4; # optional "not to be taken" hint | |
120 | ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints | |
121 | " .long ".sprintf "0x%x",19<<26|$bo<<21|2<<16|16<<1 : | |
122 | " bclr $bo,2"; | |
123 | }; | |
124 | my $beqlr = sub { | |
125 | my $f = shift; | |
126 | my $bo = $f=~/-/ ? 12+2 : 12; # optional "not to be taken" hint | |
127 | ($flavour =~ /linux/) ? # GNU as doesn't allow most recent hints | |
128 | " .long ".sprintf "0x%X",19<<26|$bo<<21|2<<16|16<<1 : | |
129 | " bclr $bo,2"; | |
130 | }; | |
131 | # GNU assembler can't handle extrdi rA,rS,16,48, or when sum of last two | |
132 | # arguments is 64, with "operand out of range" error. | |
133 | my $extrdi = sub { | |
134 | my ($f,$ra,$rs,$n,$b) = @_; | |
135 | $b = ($b+$n)&63; $n = 64-$n; | |
136 | " rldicl $ra,$rs,$b,$n"; | |
137 | }; | |
138 | my $vmr = sub { | |
139 | my ($f,$vx,$vy) = @_; | |
140 | " vor $vx,$vy,$vy"; | |
141 | }; | |
142 | ||
5ca55738 PFS |
143 | # Some ABIs specify vrsave, special-purpose register #256, as reserved |
144 | # for system use. | |
975f57fd | 145 | my $no_vrsave = ($flavour =~ /linux-ppc64le/); |
5ca55738 PFS |
146 | my $mtspr = sub { |
147 | my ($f,$idx,$ra) = @_; | |
148 | if ($idx == 256 && $no_vrsave) { | |
149 | " or $ra,$ra,$ra"; | |
150 | } else { | |
151 | " mtspr $idx,$ra"; | |
152 | } | |
153 | }; | |
154 | my $mfspr = sub { | |
155 | my ($f,$rd,$idx) = @_; | |
156 | if ($idx == 256 && $no_vrsave) { | |
157 | " li $rd,-1"; | |
158 | } else { | |
159 | " mfspr $rd,$idx"; | |
160 | } | |
161 | }; | |
162 | ||
5c380d62 LB |
163 | # PowerISA 2.06 stuff |
164 | sub vsxmem_op { | |
165 | my ($f, $vrt, $ra, $rb, $op) = @_; | |
166 | " .long ".sprintf "0x%X",(31<<26)|($vrt<<21)|($ra<<16)|($rb<<11)|($op*2+1); | |
167 | } | |
168 | # made-up unaligned memory reference AltiVec/VMX instructions | |
169 | my $lvx_u = sub { vsxmem_op(@_, 844); }; # lxvd2x | |
170 | my $stvx_u = sub { vsxmem_op(@_, 972); }; # stxvd2x | |
171 | my $lvdx_u = sub { vsxmem_op(@_, 588); }; # lxsdx | |
172 | my $stvdx_u = sub { vsxmem_op(@_, 716); }; # stxsdx | |
173 | my $lvx_4w = sub { vsxmem_op(@_, 780); }; # lxvw4x | |
174 | my $stvx_4w = sub { vsxmem_op(@_, 908); }; # stxvw4x | |
175 | ||
176 | # PowerISA 2.07 stuff | |
177 | sub vcrypto_op { | |
178 | my ($f, $vrt, $vra, $vrb, $op) = @_; | |
179 | " .long ".sprintf "0x%X",(4<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|$op; | |
180 | } | |
181 | my $vcipher = sub { vcrypto_op(@_, 1288); }; | |
182 | my $vcipherlast = sub { vcrypto_op(@_, 1289); }; | |
183 | my $vncipher = sub { vcrypto_op(@_, 1352); }; | |
184 | my $vncipherlast= sub { vcrypto_op(@_, 1353); }; | |
185 | my $vsbox = sub { vcrypto_op(@_, 0, 1480); }; | |
186 | my $vshasigmad = sub { my ($st,$six)=splice(@_,-2); vcrypto_op(@_, $st<<4|$six, 1730); }; | |
187 | my $vshasigmaw = sub { my ($st,$six)=splice(@_,-2); vcrypto_op(@_, $st<<4|$six, 1666); }; | |
188 | my $vpmsumb = sub { vcrypto_op(@_, 1032); }; | |
189 | my $vpmsumd = sub { vcrypto_op(@_, 1224); }; | |
190 | my $vpmsubh = sub { vcrypto_op(@_, 1096); }; | |
191 | my $vpmsumw = sub { vcrypto_op(@_, 1160); }; | |
192 | my $vaddudm = sub { vcrypto_op(@_, 192); }; | |
73613a81 | 193 | my $vadduqm = sub { vcrypto_op(@_, 256); }; |
5c380d62 LB |
194 | |
195 | my $mtsle = sub { | |
196 | my ($f, $arg) = @_; | |
197 | " .long ".sprintf "0x%X",(31<<26)|($arg<<21)|(147*2); | |
198 | }; | |
199 | ||
f42613c6 HX |
200 | print "#include <asm/ppc_asm.h>\n" if $flavour =~ /linux/; |
201 | ||
5c380d62 LB |
202 | while($line=<>) { |
203 | ||
204 | $line =~ s|[#!;].*$||; # get rid of asm-style comments... | |
205 | $line =~ s|/\*.*\*/||; # ... and C-style comments... | |
206 | $line =~ s|^\s+||; # ... and skip white spaces in beginning... | |
207 | $line =~ s|\s+$||; # ... and at the end | |
208 | ||
209 | { | |
210 | $line =~ s|\b\.L(\w+)|L$1|g; # common denominator for Locallabel | |
211 | $line =~ s|\bL(\w+)|\.L$1|g if ($dotinlocallabels); | |
212 | } | |
213 | ||
5c380d62 LB |
214 | { |
215 | $line =~ s|^\s*(\.?)(\w+)([\.\+\-]?)\s*||; | |
216 | my $c = $1; $c = "\t" if ($c eq ""); | |
217 | my $mnemonic = $2; | |
218 | my $f = $3; | |
219 | my $opcode = eval("\$$mnemonic"); | |
220 | $line =~ s/\b(c?[rf]|v|vs)([0-9]+)\b/$2/g if ($c ne "." and $flavour !~ /osx/); | |
221 | if (ref($opcode) eq 'CODE') { $line = &$opcode($f,split(',',$line)); } | |
222 | elsif ($mnemonic) { $line = $c.$mnemonic.$f."\t".$line; } | |
223 | } | |
224 | ||
225 | print $line if ($line); | |
226 | print "\n"; | |
227 | } | |
228 | ||
229 | close STDOUT; |