courgette/types_win_pe.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef TYPES_WIN_PE_H_
   6 #define TYPES_WIN_PE_H_
   7
   8 #include "base/basictypes.h"
   9
  10
  11 namespace courgette {
  12
  13 // PE file section header.  This struct has the same layout as the
  14 // IMAGE_SECTION_HEADER structure from WINNT.H
  15 // http://msdn.microsoft.com/en-us/library/ms680341(VS.85).aspx
  16 //
  17 #pragma pack(push, 1)  // Supported by MSVC and GCC. Ensures no gaps in packing.
  18 struct Section {
  19   char name[8];
  20   uint32 virtual_size;
  21   uint32 virtual_address;
  22   uint32 size_of_raw_data;
  23   uint32 file_offset_of_raw_data;
  24   uint32 pointer_to_relocations;   // Always zero in an image.
  25   uint32 pointer_to_line_numbers;  // Always zero in an image.
  26   uint16 number_of_relocations;    // Always zero in an image.
  27   uint16 number_of_line_numbers;   // Always zero in an image.
  28   uint32 characteristics;
  29 };
  30 #pragma pack(pop)
  31
  32 static_assert(sizeof(Section) == 40, "section size is 40 bytes");
  33
  34 // ImageDataDirectory has same layout as IMAGE_DATA_DIRECTORY structure from
  35 // WINNT.H
  36 // http://msdn.microsoft.com/en-us/library/ms680305(VS.85).aspx
  37 //
  38 class ImageDataDirectory {
  39  public:
  40   ImageDataDirectory() : address_(0), size_(0) {}
  41   RVA address_;
  42   uint32 size_;
  43 };
  44
  45 static_assert(sizeof(ImageDataDirectory) == 8,
  46               "image data directory size is 8 bytes");
  47
  48
  49 ////////////////////////////////////////////////////////////////////////////////
  50
  51 // Constants and offsets gleaned from WINNT.H and various articles on the
  52 // format of Windows PE executables.
  53
  54 // This is FIELD_OFFSET(IMAGE_DOS_HEADER, e_lfanew):
  55 const size_t kOffsetOfFileAddressOfNewExeHeader = 0x3c;
  56
  57 const uint16 kImageNtOptionalHdr32Magic = 0x10b;
  58 const uint16 kImageNtOptionalHdr64Magic = 0x20b;
  59
  60 const size_t kSizeOfCoffHeader = 20;
  61 const size_t kOffsetOfDataDirectoryFromImageOptionalHeader32 = 96;
  62 const size_t kOffsetOfDataDirectoryFromImageOptionalHeader64 = 112;
  63
  64 }  // namespace
  65 #endif  // TYPES_WIN_PE_H_