190 lines
7 KiB
C++
190 lines
7 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_OAT_H_
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#define ART_RUNTIME_OAT_H_
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#include <vector>
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#include "arch/instruction_set.h"
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#include "base/macros.h"
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#include "compiler_filter.h"
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#include "dex_file.h"
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#include "safe_map.h"
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namespace art {
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class InstructionSetFeatures;
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class PACKED(4) OatHeader {
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public:
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static constexpr uint8_t kOatMagic[] = { 'o', 'a', 't', '\n' };
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// Last oat version changed reason: Add dex section layout info to header.
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static constexpr uint8_t kOatVersion[] = { '1', '3', '1', '\0' };
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static constexpr const char* kImageLocationKey = "image-location";
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static constexpr const char* kDex2OatCmdLineKey = "dex2oat-cmdline";
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static constexpr const char* kDex2OatHostKey = "dex2oat-host";
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static constexpr const char* kPicKey = "pic";
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static constexpr const char* kDebuggableKey = "debuggable";
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static constexpr const char* kNativeDebuggableKey = "native-debuggable";
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static constexpr const char* kCompilerFilter = "compiler-filter";
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static constexpr const char* kClassPathKey = "classpath";
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static constexpr const char* kBootClassPathKey = "bootclasspath";
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static constexpr const char* kConcurrentCopying = "concurrent-copying";
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static constexpr const char kTrueValue[] = "true";
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static constexpr const char kFalseValue[] = "false";
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static OatHeader* Create(InstructionSet instruction_set,
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const InstructionSetFeatures* instruction_set_features,
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uint32_t dex_file_count,
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const SafeMap<std::string, std::string>* variable_data);
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bool IsValid() const;
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std::string GetValidationErrorMessage() const;
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const char* GetMagic() const;
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uint32_t GetChecksum() const;
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void UpdateChecksumWithHeaderData();
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void UpdateChecksum(const void* data, size_t length);
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uint32_t GetDexFileCount() const {
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DCHECK(IsValid());
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return dex_file_count_;
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}
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uint32_t GetOatDexFilesOffset() const;
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void SetOatDexFilesOffset(uint32_t oat_dex_files_offset);
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uint32_t GetExecutableOffset() const;
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void SetExecutableOffset(uint32_t executable_offset);
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const void* GetInterpreterToInterpreterBridge() const;
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uint32_t GetInterpreterToInterpreterBridgeOffset() const;
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void SetInterpreterToInterpreterBridgeOffset(uint32_t offset);
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const void* GetInterpreterToCompiledCodeBridge() const;
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uint32_t GetInterpreterToCompiledCodeBridgeOffset() const;
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void SetInterpreterToCompiledCodeBridgeOffset(uint32_t offset);
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const void* GetJniDlsymLookup() const;
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uint32_t GetJniDlsymLookupOffset() const;
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void SetJniDlsymLookupOffset(uint32_t offset);
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const void* GetQuickGenericJniTrampoline() const;
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uint32_t GetQuickGenericJniTrampolineOffset() const;
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void SetQuickGenericJniTrampolineOffset(uint32_t offset);
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const void* GetQuickResolutionTrampoline() const;
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uint32_t GetQuickResolutionTrampolineOffset() const;
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void SetQuickResolutionTrampolineOffset(uint32_t offset);
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const void* GetQuickImtConflictTrampoline() const;
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uint32_t GetQuickImtConflictTrampolineOffset() const;
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void SetQuickImtConflictTrampolineOffset(uint32_t offset);
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const void* GetQuickToInterpreterBridge() const;
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uint32_t GetQuickToInterpreterBridgeOffset() const;
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void SetQuickToInterpreterBridgeOffset(uint32_t offset);
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int32_t GetImagePatchDelta() const;
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void RelocateOat(off_t delta);
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void SetImagePatchDelta(int32_t off);
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InstructionSet GetInstructionSet() const;
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uint32_t GetInstructionSetFeaturesBitmap() const;
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uint32_t GetImageFileLocationOatChecksum() const;
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void SetImageFileLocationOatChecksum(uint32_t image_file_location_oat_checksum);
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uint32_t GetImageFileLocationOatDataBegin() const;
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void SetImageFileLocationOatDataBegin(uint32_t image_file_location_oat_data_begin);
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uint32_t GetKeyValueStoreSize() const;
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const uint8_t* GetKeyValueStore() const;
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const char* GetStoreValueByKey(const char* key) const;
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bool GetStoreKeyValuePairByIndex(size_t index, const char** key, const char** value) const;
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size_t GetHeaderSize() const;
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bool IsPic() const;
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bool IsDebuggable() const;
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bool IsNativeDebuggable() const;
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CompilerFilter::Filter GetCompilerFilter() const;
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bool IsConcurrentCopying() const;
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private:
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bool KeyHasValue(const char* key, const char* value, size_t value_size) const;
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OatHeader(InstructionSet instruction_set,
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const InstructionSetFeatures* instruction_set_features,
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uint32_t dex_file_count,
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const SafeMap<std::string, std::string>* variable_data);
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// Returns true if the value of the given key is "true", false otherwise.
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bool IsKeyEnabled(const char* key) const;
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void Flatten(const SafeMap<std::string, std::string>* variable_data);
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uint8_t magic_[4];
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uint8_t version_[4];
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uint32_t adler32_checksum_;
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InstructionSet instruction_set_;
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uint32_t instruction_set_features_bitmap_;
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uint32_t dex_file_count_;
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uint32_t oat_dex_files_offset_;
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uint32_t executable_offset_;
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uint32_t interpreter_to_interpreter_bridge_offset_;
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uint32_t interpreter_to_compiled_code_bridge_offset_;
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uint32_t jni_dlsym_lookup_offset_;
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uint32_t quick_generic_jni_trampoline_offset_;
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uint32_t quick_imt_conflict_trampoline_offset_;
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uint32_t quick_resolution_trampoline_offset_;
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uint32_t quick_to_interpreter_bridge_offset_;
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// The amount that the image this oat is associated with has been patched.
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int32_t image_patch_delta_;
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uint32_t image_file_location_oat_checksum_;
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uint32_t image_file_location_oat_data_begin_;
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uint32_t key_value_store_size_;
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uint8_t key_value_store_[0]; // note variable width data at end
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DISALLOW_COPY_AND_ASSIGN(OatHeader);
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};
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// OatMethodOffsets are currently 5x32-bits=160-bits long, so if we can
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// save even one OatMethodOffsets struct, the more complicated encoding
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// using a bitmap pays for itself since few classes will have 160
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// methods.
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enum OatClassType {
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kOatClassAllCompiled = 0, // OatClass is followed by an OatMethodOffsets for each method.
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kOatClassSomeCompiled = 1, // A bitmap of which OatMethodOffsets are present follows the OatClass.
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kOatClassNoneCompiled = 2, // All methods are interpreted so no OatMethodOffsets are necessary.
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kOatClassMax = 3,
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};
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std::ostream& operator<<(std::ostream& os, const OatClassType& rhs);
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class PACKED(4) OatMethodOffsets {
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public:
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explicit OatMethodOffsets(uint32_t code_offset = 0);
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~OatMethodOffsets();
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OatMethodOffsets(const OatMethodOffsets&) = default;
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OatMethodOffsets& operator=(const OatMethodOffsets&) = default;
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uint32_t code_offset_;
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};
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} // namespace art
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#endif // ART_RUNTIME_OAT_H_
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