drivers/crypto/vmx/ppc-xlate.pl

   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                               };
  30         /linux/
  31                         && do { $ret = "_GLOBAL($name)";
  32                                 last;
  33                               };
  34     }
  35
  36     $ret = ".globl      $name\nalign 5\n$name:" if (!$ret);
  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
 142 # Some ABIs specify vrsave, special-purpose register #256, as reserved
 143 # for system use.
 144 my $no_vrsave = ($flavour =~ /linux-ppc64le/);
 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
 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);  };
 192 my $vadduqm     = sub { vcrypto_op(@_, 256);  };
 193
 194 my $mtsle       = sub {
 195     my ($f, $arg) = @_;
 196     "   .long   ".sprintf "0x%X",(31<<26)|($arg<<21)|(147*2);
 197 };
 198
 199 print "#include <asm/ppc_asm.h>\n" if $flavour =~ /linux/;
 200
 201 while($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
 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;