courgette/image_utils.h

   1 // Copyright 2015 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 COURGETTE_IMAGE_UTILS_H_
   6 #define COURGETTE_IMAGE_UTILS_H_
   7
   8 #include "base/basictypes.h"
   9
  10 // COURGETTE_HISTOGRAM_TARGETS prints out a histogram of how frequently
  11 // different target addresses are referenced. Purely for debugging.
  12 #define COURGETTE_HISTOGRAM_TARGETS 0
  13
  14 namespace courgette {
  15
  16 typedef uint32 RVA;
  17
  18 // These helper functions avoid the need for casts in the main code.
  19 inline uint16 ReadU16(const uint8* address, size_t offset) {
  20   return *reinterpret_cast<const uint16*>(address + offset);
  21 }
  22
  23 inline uint32 ReadU32(const uint8* address, size_t offset) {
  24   return *reinterpret_cast<const uint32*>(address + offset);
  25 }
  26
  27 inline uint64 ReadU64(const uint8* address, size_t offset) {
  28   return *reinterpret_cast<const uint64*>(address + offset);
  29 }
  30
  31 inline uint16 Read16LittleEndian(const void* address) {
  32   return *reinterpret_cast<const uint16*>(address);
  33 }
  34
  35 inline uint32 Read32LittleEndian(const void* address) {
  36   return *reinterpret_cast<const uint32*>(address);
  37 }
  38
  39 inline uint64 Read64LittleEndian(const void* address) {
  40   return *reinterpret_cast<const uint64*>(address);
  41 }
  42
  43 }  // namespace courgette
  44
  45 #endif  // COURGETTE_IMAGE_UTILS_H_