arch/x86/kernel/cpu/mkcapflags.pl

   1 #!/usr/bin/perl
   2 #
   3 # Generate the x86_cap_flags[] array from include/asm-x86/cpufeature.h
   4 #
   5
   6 ($in, $out) = @ARGV;
   7
   8 open(IN, "< $in\0")   or die "$0: cannot open: $in: $!\n";
   9 open(OUT, "> $out\0") or die "$0: cannot create: $out: $!\n";
  10
  11 print OUT "#include <asm/cpufeature.h>\n\n";
  12 print OUT "const char * const x86_cap_flags[NCAPINTS*32] = {\n";
  13
  14 while (defined($line = <IN>)) {
  15         if ($line =~ /^\s*\#\s*define\s+(X86_FEATURE_(\S+))\s+(.*)$/) {
  16                 $macro = $1;
  17                 $feature = $2;
  18                 $tail = $3;
  19                 if ($tail =~ /\/\*\s*\"([^"]*)\".*\*\//) {
  20                         $feature = $1;
  21                 }
  22
  23                 if ($feature ne '') {
  24                         printf OUT "\t%-32s = \"%s\",\n",
  25                                 "[$macro]", "\L$feature";
  26                 }
  27         }
  28 }
  29 print OUT "};\n";
  30
  31 close(IN);
  32 close(OUT);