release/src/router/dropbear/libtommath/dep.pl

   1 #!/usr/bin/perl
   2 #
   3 # Walk through source, add labels and make classes
   4 #
   5 #use strict;
   6
   7 my %deplist;
   8
   9 #open class file and write preamble
  10 open(CLASS, ">tommath_class.h") or die "Couldn't open tommath_class.h for writing\n";
  11 print CLASS "#if !(defined(LTM1) && defined(LTM2) && defined(LTM3))\n#if defined(LTM2)\n#define LTM3\n#endif\n#if defined(LTM1)\n#define LTM2\n#endif\n#define LTM1\n\n#if defined(LTM_ALL)\n";
  12
  13 foreach my $filename (glob "bn*.c") {
  14    my $define = $filename;
  15
  16 print "Processing $filename\n";
  17
  18    # convert filename to upper case so we can use it as a define
  19    $define =~ tr/[a-z]/[A-Z]/;
  20    $define =~ tr/\./_/;
  21    print CLASS "#define $define\n";
  22
  23    # now copy text and apply #ifdef as required
  24    my $apply = 0;
  25    open(SRC, "<$filename");
  26    open(OUT, ">tmp");
  27
  28    # first line will be the #ifdef
  29    my $line = <SRC>;
  30    if ($line =~ /include/) {
  31       print OUT $line;
  32    } else {
  33       print OUT "#include <tommath.h>\n#ifdef $define\n$line";
  34       $apply = 1;
  35    }
  36    while (<SRC>) {
  37       if (!($_ =~ /tommath\.h/)) {
  38          print OUT $_;
  39       }
  40    }
  41    if ($apply == 1) {
  42       print OUT "#endif\n";
  43    }
  44    close SRC;
  45    close OUT;
  46
  47    unlink($filename);
  48    rename("tmp", $filename);
  49 }
  50 print CLASS "#endif\n\n";
  51
  52 # now do classes
  53
  54 foreach my $filename (glob "bn*.c") {
  55    open(SRC, "<$filename") or die "Can't open source file!\n";
  56
  57    # convert filename to upper case so we can use it as a define
  58    $filename =~ tr/[a-z]/[A-Z]/;
  59    $filename =~ tr/\./_/;
  60
  61    print CLASS "#if defined($filename)\n";
  62    my $list = $filename;
  63
  64    # scan for mp_* and make classes
  65    while (<SRC>) {
  66       my $line = $_;
  67       while ($line =~ m/(fast_)*(s_)*mp\_[a-z_0-9]*/) {
  68           $line = $';
  69           # now $& is the match, we want to skip over LTM keywords like
  70           # mp_int, mp_word, mp_digit
  71           if (!($& eq "mp_digit") && !($& eq "mp_word") && !($& eq "mp_int")) {
  72              my $a = $&;
  73              $a =~ tr/[a-z]/[A-Z]/;
  74              $a = "BN_" . $a . "_C";
  75              if (!($list =~ /$a/)) {
  76                 print CLASS "   #define $a\n";
  77              }
  78              $list = $list . "," . $a;
  79           }
  80       }
  81    }
  82    @deplist{$filename} = $list;
  83
  84    print CLASS "#endif\n\n";
  85    close SRC;
  86 }
  87
  88 print CLASS "#ifdef LTM3\n#define LTM_LAST\n#endif\n#include <tommath_superclass.h>\n#include <tommath_class.h>\n#else\n#define LTM_LAST\n#endif\n";
  89 close CLASS;
  90
  91 #now let's make a cool call graph...
  92
  93 open(OUT,">callgraph.txt");
  94 $indent = 0;
  95 foreach (keys %deplist) {
  96    $list = "";
  97    draw_func(@deplist{$_});
  98    print OUT "\n\n";
  99 }
 100 close(OUT);
 101
 102 sub draw_func()
 103 {
 104    my @funcs = split(",", $_[0]);
 105    if ($list =~ /@funcs[0]/) {
 106       return;
 107    } else {
 108       $list = $list . @funcs[0];
 109    }
 110    if ($indent == 0) { }
 111    elsif ($indent >= 1) { print OUT "|   " x ($indent - 1) . "+--->"; }
 112    print OUT @funcs[0] . "\n";
 113    shift @funcs;
 114       my $temp = $list;
 115    foreach my $i (@funcs) {
 116       ++$indent;
 117       draw_func(@deplist{$i});
 118       --$indent;
 119    }
 120       $list = $temp;
 121 }
 122
 123