regs.pl

   1 #!/usr/bin/perl
   2 # $Id$
   3 #
   4 # Read regs.dat and output regs.h and regs.c (included in names.c)
   5 #
   6
   7 $nline = 0;
   8
   9 sub process_line($) {
  10     my($line) = @_;
  11     my @v;
  12
  13     if ( $line !~ /^\s*(\S+)\s*(\S+)\s*(\S+)\s*([0-7])\s*$/ ) {
  14         die "regs.dat:$nline: invalid input\n";
  15     }
  16     $reg    = $1;
  17     $aclass = $2;
  18     $dclass = $3;
  19     $regval   = $4;
  20
  21     $regs{$reg} = $aclass;
  22     $regvals{$reg} = $regval;
  23
  24     if ( !defined($disclass{$dclass}) ) {
  25         $disclass{$dclass} = [(undef) x 8];
  26     }
  27
  28     $disclass{$dclass}->[$regval] = $reg;
  29 }
  30
  31 ($fmt, $file) = @ARGV;
  32
  33 %regs = ();
  34 %regvals = ();
  35 %disclass = ();
  36 open(REGS, "< ${file}") or die "$0: Cannot open $file\n";
  37 while ( defined($line = <REGS>) ) {
  38     $nline++;
  39
  40     chomp $line;
  41     $line =~ s/\s*(\#.*|)$//;
  42
  43     next if ( $line eq '' );
  44
  45     if ( $line =~ /\*/ ) {
  46         for ( $i = 0 ; $i < 8 ; $i++ ) {
  47             ($xline = $line) =~ s/\*/$i/g;
  48             process_line($xline);
  49         }
  50     } else {
  51         process_line($line);
  52     }
  53 }
  54 close(REGS);
  55
  56 if ( $fmt eq 'h' ) {
  57     # Output regs.h
  58     print "/* automatically generated from $file - do not edit */\n";
  59     print "enum reg_enum {\n";
  60     $attach = ' = EXPR_REG_START'; # EXPR_REG_START == 1
  61     foreach $reg ( sort(keys(%regs)) ) {
  62         print "    R_\U${reg}\E${attach},\n";
  63         $attach = ''; $ch = ',';
  64     }
  65     print "    REG_ENUM_LIMIT\n";
  66     print "};\n";
  67 } elsif ( $fmt eq 'c' ) {
  68     # Output regs.c
  69     print "/* automatically generated from $file - do not edit */\n";
  70     print "static const char *reg_names[] = "; $ch = '{';
  71     # This one has no dummy entry for 0
  72     foreach $reg ( sort(keys(%regs)) ) {
  73         print "$ch\n    \"${reg}\"";
  74         $ch = ',';
  75     }
  76     print "\n};\n";
  77 } elsif ( $fmt eq 'fc' ) {
  78     # Output regflags.c
  79     print "/* automatically generated from $file - do not edit */\n";
  80     print "static const long reg_flags[] = {\n";
  81     print "    0";              # Dummy entry for 0
  82     foreach $reg ( sort(keys(%regs)) ) {
  83         print ",\n    ", $regs{$reg}; # Print the class of the register
  84     }
  85     print "\n};\n";
  86 } elsif ( $fmt eq 'vc' ) {
  87     # Output regvals.c
  88     print "/* automatically generated from $file - do not edit */\n";
  89     print "static const int regvals[] = {\n";
  90     print "    -1";             # Dummy entry for 0
  91     foreach $reg ( sort(keys(%regs)) ) {
  92         print ",\n    ", $regvals{$reg}; # Print the regval of the register
  93     }
  94     print "\n};\n";
  95 } elsif ( $fmt eq 'dc' ) {
  96     # Output regdis.c
  97     print "/* automatically generated from $file - do not edit */\n";
  98     foreach $class ( sort(keys(%disclass)) ) {
  99         printf "static const int %-8s[] = {", $class;
 100         @foo = @{$disclass{$class}};
 101         for ( $i = 0 ; $i < scalar(@foo) ; $i++ ) {
 102             $foo[$i] = defined($foo[$i]) ? "R_\U$foo[$i]\E" : '0';
 103         }
 104         print join(',', @foo), "};\n";
 105     }
 106 } else {
 107     die "$0: Unknown output format\n";
 108 }