oat.h revision 7c3d13aebdd8611cae58a1048bffb13cbdc465cb 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_RUNTIME_OAT_H_
18#define ART_RUNTIME_OAT_H_
19
20#include <vector>
21
22#include "base/macros.h"
23#include "dex_file.h"
24#include "instruction_set.h"
25
26namespace art {
27
28class PACKED(4) OatHeader {
29 public:
30  static const uint8_t kOatMagic[4];
31  static const uint8_t kOatVersion[4];
32
33  OatHeader();
34  OatHeader(InstructionSet instruction_set,
35            const std::vector<const DexFile*>* dex_files,
36            uint32_t image_file_location_oat_checksum,
37            uint32_t image_file_location_oat_data_begin,
38            const std::string& image_file_location);
39
40  bool IsValid() const;
41  const char* GetMagic() const;
42  uint32_t GetChecksum() const;
43  void UpdateChecksum(const void* data, size_t length);
44  uint32_t GetDexFileCount() const {
45    DCHECK(IsValid());
46    return dex_file_count_;
47  }
48  uint32_t GetExecutableOffset() const;
49  void SetExecutableOffset(uint32_t executable_offset);
50
51  const void* GetInterpreterToInterpreterBridge() const;
52  uint32_t GetInterpreterToInterpreterBridgeOffset() const;
53  void SetInterpreterToInterpreterBridgeOffset(uint32_t offset);
54  const void* GetInterpreterToCompiledCodeBridge() const;
55  uint32_t GetInterpreterToCompiledCodeBridgeOffset() const;
56  void SetInterpreterToCompiledCodeBridgeOffset(uint32_t offset);
57
58  const void* GetJniDlsymLookup() const;
59  uint32_t GetJniDlsymLookupOffset() const;
60  void SetJniDlsymLookupOffset(uint32_t offset);
61
62  const void* GetPortableResolutionTrampoline() const;
63  uint32_t GetPortableResolutionTrampolineOffset() const;
64  void SetPortableResolutionTrampolineOffset(uint32_t offset);
65  const void* GetPortableToInterpreterBridge() const;
66  uint32_t GetPortableToInterpreterBridgeOffset() const;
67  void SetPortableToInterpreterBridgeOffset(uint32_t offset);
68
69  const void* GetQuickResolutionTrampoline() const;
70  uint32_t GetQuickResolutionTrampolineOffset() const;
71  void SetQuickResolutionTrampolineOffset(uint32_t offset);
72  const void* GetQuickToInterpreterBridge() const;
73  uint32_t GetQuickToInterpreterBridgeOffset() const;
74  void SetQuickToInterpreterBridgeOffset(uint32_t offset);
75
76  InstructionSet GetInstructionSet() const;
77  uint32_t GetImageFileLocationOatChecksum() const;
78  uint32_t GetImageFileLocationOatDataBegin() const;
79  uint32_t GetImageFileLocationSize() const;
80  const uint8_t* GetImageFileLocationData() const;
81  std::string GetImageFileLocation() const;
82
83 private:
84  uint8_t magic_[4];
85  uint8_t version_[4];
86  uint32_t adler32_checksum_;
87
88  InstructionSet instruction_set_;
89  uint32_t dex_file_count_;
90  uint32_t executable_offset_;
91  uint32_t interpreter_to_interpreter_bridge_offset_;
92  uint32_t interpreter_to_compiled_code_bridge_offset_;
93  uint32_t jni_dlsym_lookup_offset_;
94  uint32_t portable_resolution_trampoline_offset_;
95  uint32_t portable_to_interpreter_bridge_offset_;
96  uint32_t quick_resolution_trampoline_offset_;
97  uint32_t quick_to_interpreter_bridge_offset_;
98
99  uint32_t image_file_location_oat_checksum_;
100  uint32_t image_file_location_oat_data_begin_;
101  uint32_t image_file_location_size_;
102  uint8_t image_file_location_data_[0];  // note variable width data at end
103
104  DISALLOW_COPY_AND_ASSIGN(OatHeader);
105};
106
107class PACKED(4) OatMethodOffsets {
108 public:
109  OatMethodOffsets();
110
111  OatMethodOffsets(uint32_t code_offset,
112                   uint32_t frame_size_in_bytes,
113                   uint32_t core_spill_mask,
114                   uint32_t fp_spill_mask,
115                   uint32_t mapping_table_offset,
116                   uint32_t vmap_table_offset,
117                   uint32_t gc_map_offset);
118
119  ~OatMethodOffsets();
120
121  uint32_t code_offset_;
122  uint32_t frame_size_in_bytes_;
123  uint32_t core_spill_mask_;
124  uint32_t fp_spill_mask_;
125  uint32_t mapping_table_offset_;
126  uint32_t vmap_table_offset_;
127  uint32_t gc_map_offset_;
128};
129
130}  // namespace art
131
132#endif  // ART_RUNTIME_OAT_H_
133