OLD | NEW |
---|---|
1 // Copyright 2015 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef COURGETTE_IMAGE_UTILS_H_ | 5 #ifndef COURGETTE_IMAGE_UTILS_H_ |
6 #define COURGETTE_IMAGE_UTILS_H_ | 6 #define COURGETTE_IMAGE_UTILS_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 | 9 |
10 // COURGETTE_HISTOGRAM_TARGETS prints out a histogram of how frequently | 10 // COURGETTE_HISTOGRAM_TARGETS prints out a histogram of how frequently |
11 // different target addresses are referenced. Purely for debugging. | 11 // different target addresses are referenced. Purely for debugging. |
12 #define COURGETTE_HISTOGRAM_TARGETS 0 | 12 #define COURGETTE_HISTOGRAM_TARGETS 0 |
13 | 13 |
14 namespace courgette { | 14 namespace courgette { |
15 | 15 |
16 typedef uint32 RVA; | 16 typedef uint32 RVA; |
17 | 17 |
18 // A Label is a symbolic reference to an address. Unlike a conventional | |
19 // assembly language, we always know the address. The address will later be | |
20 // stored in a table and the Label will be replaced with the index into the | |
21 // table. | |
22 // | |
23 // TODO(sra): Make fields private and add setters and getters. | |
24 class Label { | |
25 public: | |
26 static const int kNoIndex = -1; | |
grt (UTC plus 2)
2015/12/02 19:03:40
nit:
enum : int { kNoIndex = -1 };
as per https:
huangs
2015/12/02 20:51:02
Done.
| |
27 Label() : rva_(0), index_(kNoIndex), count_(0) {} | |
28 explicit Label(RVA rva) : rva_(rva), index_(kNoIndex), count_(0) {} | |
29 | |
30 bool operator==(const Label& other) const { | |
31 return rva_ == other.rva_ && index_ == other.index_ && | |
32 count_ == other.count_; | |
33 } | |
34 | |
35 RVA rva_; // Address referred to by the label. | |
grt (UTC plus 2)
2015/12/02 19:03:40
use non-static member initializers here; e.g.:
R
huangs
2015/12/02 20:51:02
Done.
| |
36 int index_; // Index of address in address table, kNoIndex until assigned. | |
37 int count_; | |
38 }; | |
39 | |
18 // These helper functions avoid the need for casts in the main code. | 40 // These helper functions avoid the need for casts in the main code. |
19 inline uint16 ReadU16(const uint8* address, size_t offset) { | 41 inline uint16 ReadU16(const uint8* address, size_t offset) { |
20 return *reinterpret_cast<const uint16*>(address + offset); | 42 return *reinterpret_cast<const uint16*>(address + offset); |
21 } | 43 } |
22 | 44 |
23 inline uint32 ReadU32(const uint8* address, size_t offset) { | 45 inline uint32 ReadU32(const uint8* address, size_t offset) { |
24 return *reinterpret_cast<const uint32*>(address + offset); | 46 return *reinterpret_cast<const uint32*>(address + offset); |
25 } | 47 } |
26 | 48 |
27 inline uint64 ReadU64(const uint8* address, size_t offset) { | 49 inline uint64 ReadU64(const uint8* address, size_t offset) { |
28 return *reinterpret_cast<const uint64*>(address + offset); | 50 return *reinterpret_cast<const uint64*>(address + offset); |
29 } | 51 } |
30 | 52 |
31 inline uint16 Read16LittleEndian(const void* address) { | 53 inline uint16 Read16LittleEndian(const void* address) { |
32 return *reinterpret_cast<const uint16*>(address); | 54 return *reinterpret_cast<const uint16*>(address); |
33 } | 55 } |
34 | 56 |
35 inline uint32 Read32LittleEndian(const void* address) { | 57 inline uint32 Read32LittleEndian(const void* address) { |
36 return *reinterpret_cast<const uint32*>(address); | 58 return *reinterpret_cast<const uint32*>(address); |
37 } | 59 } |
38 | 60 |
39 inline uint64 Read64LittleEndian(const void* address) { | 61 inline uint64 Read64LittleEndian(const void* address) { |
40 return *reinterpret_cast<const uint64*>(address); | 62 return *reinterpret_cast<const uint64*>(address); |
41 } | 63 } |
42 | 64 |
43 } // namespace courgette | 65 } // namespace courgette |
44 | 66 |
45 #endif // COURGETTE_IMAGE_UTILS_H_ | 67 #endif // COURGETTE_IMAGE_UTILS_H_ |
OLD | NEW |