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      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 COMPILE_ASSERT(sizeof(Section) == 40, section_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 COMPILE_ASSERT(sizeof(ImageDataDirectory) == 8,
     46                image_data_directory_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_
     66