false-true/mktrue2

   1 #!/usr/bin/perl
   2
   3 while (<DATA>) {
   4         s/#.*$//; s/\b(\w{4})(\w{4})\b/$2 $1/g; s/\b(\w\w)(\w\w)\b/$2 $1/g;
   5         foreach $a (split /\s+/) { print pack("c",hex $a); }
   6 }
   7
   8 __END__
   9
  10 7f 45 4c 46                     # Identification
  11 01                              # We're 32-bit
  12 01                              # Little endian
  13 01                              # Header version
  14 00 00000000 00000000            # Padding
  15 0002                            # Type: Executable File
  16 0003                            # Machine: i386
  17 00000001                        # Version: Current :)
  18 100000A4                        # Entry point
  19 00000084                        # PH offset
  20 00000034                        # SH offset
  21 00000000                        # Machine-specific flags
  22 0034                            # EH size
  23 0020                            # Size of single PH entry
  24 0001                            # Number of PH entries
  25 0028                            # Size of single SH entry
  26 0002                            # Number of SH entries
  27 0000                            # String table offset
  28
  29 # Offset 34: Section Header for section 0
  30
  31 00000000                        # Name (ST offset)
  32 00000000                        # Type: Void
  33 00000000                        # Flags
  34 00000000                        # Address
  35 00000000                        # Offset
  36 00000000                        # Size
  37 00000000                        # Link
  38 00000000                        # Info
  39 00000000                        # Align
  40 00000000                        # Size of single entry
  41
  42 # Offset 5C: Section Header for section 1
  43
  44 00000000                        # Name (ST offset)
  45 00000001                        # Type: Program bits
  46 00000007                        # Flags: writeable, allocate, executable
  47 100000A4                        # Address
  48 000000A4                        # Offset
  49 00000009                        # Size
  50 00000000                        # Link
  51 00000000                        # Info
  52 00000000                        # Align
  53 00000000                        # Size of single entry: No entries
  54
  55 # Offset 84: Program Header
  56
  57 00000001                        # Type: Loadable
  58 000000A4                        # Offset of section start
  59 100000A4                        # Virtual address
  60 100000A4                        # Physical address: ignored
  61 00000009                        # File image size
  62 00000009                        # Memory image size
  63 00000007                        # Flags: rwx
  64 00001000                        # Align to page size
  65
  66 # Offset A4: Our Program
  67
  68 b8 01 00 00 00
  69 31 db
  70 cd 80