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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 | #!/usr/bin/env perl # SPDX-License-Identifier: GPL-2.0 # PowerPC assembler distiller by <appro>. my $flavour = shift; my $output = shift; open STDOUT,">$output" || die "can't open $output: $!"; my %GLOBALS; my $dotinlocallabels=($flavour=~/linux/)?1:0; my $elfv2abi=(($flavour =~ /linux-ppc64le/) or ($flavour =~ /linux-ppc64-elfv2/))?1:0; my $dotfunctions=($elfv2abi=~1)?0:1; ################################################################ # directives which need special treatment on different platforms ################################################################ my $globl = sub { my $junk = shift; my $name = shift; my $global = \$GLOBALS{$name}; my $ret; $name =~ s|^[\.\_]||; SWITCH: for ($flavour) { /aix/ && do { $name = ".$name"; last; }; /osx/ && do { $name = "_$name"; last; }; /linux/ && do { $ret = "_GLOBAL($name)"; last; }; } $ret = ".globl $name\nalign 5\n$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 ($elfv2abi); $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; $name =~ s|^[\.\_]||; my $ret = ".size $name,.-".($dotfunctions?".":"").$name; $ret .= "\n.size .$name,.-.$name" if ($dotfunctions); $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 $no_vrsave = ($elfv2abi); 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 $stvx_4w = sub { vsxmem_op(@_, 908); }; # stxvw4x # PowerISA 2.07 stuff sub vcrypto_op { my ($f, $vrt, $vra, $vrb, $op) = @_; " .long ".sprintf "0x%X",(4<<26)|($vrt<<21)|($vra<<16)|($vrb<<11)|$op; } 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); }; my $vaddudm = sub { vcrypto_op(@_, 192); }; my $vadduqm = sub { vcrypto_op(@_, 256); }; my $mtsle = sub { my ($f, $arg) = @_; " .long ".sprintf "0x%X",(31<<26)|($arg<<21)|(147*2); }; print "#include <asm/ppc_asm.h>\n" if $flavour =~ /linux/; while($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|\b\.L(\w+)|L$1|g; # common denominator for Locallabel $line =~ s|\bL(\w+)|\.L$1|g if ($dotinlocallabels); } { $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($f,split(',',$line)); } elsif ($mnemonic) { $line = $c.$mnemonic.$f."\t".$line; } } print $line if ($line); print "\n"; } close STDOUT; |