3f805ac3f8
- Add a method to get the max size of an elf file by reading the section header offset + size. This will properly map an elf file embedded into an apk, instead of just mapping in what is done by the dynamic linker. It does assume that the section headers are at the end of the elf file. - Add new tests for the above functionality. - Update the unwind_symbols tool to take an address for finding a function instead of dumping the entire symbol table. Bug: 23762183 Test: Unit tests pass, unwind through the camera process and verify Test: the GoogleCamera.apk shows some function names. Change-Id: I00c021680fe1d43b60d652bf91bbf6667d9617be
88 lines
2.1 KiB
C++
88 lines
2.1 KiB
C++
/*
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* Copyright (C) 2016 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 _LIBUNWINDSTACK_ELF_H
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#define _LIBUNWINDSTACK_ELF_H
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#include <stddef.h>
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#include <memory>
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#include <string>
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#include <unwindstack/ElfInterface.h>
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#include <unwindstack/Memory.h>
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#if !defined(EM_AARCH64)
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#define EM_AARCH64 183
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#endif
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namespace unwindstack {
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// Forward declaration.
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struct MapInfo;
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class Regs;
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class Elf {
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public:
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Elf(Memory* memory) : memory_(memory) {}
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virtual ~Elf() = default;
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bool Init();
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void InitGnuDebugdata();
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bool GetSoname(std::string* name);
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bool GetFunctionName(uint64_t addr, std::string* name, uint64_t* func_offset);
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uint64_t GetRelPc(uint64_t pc, const MapInfo* map_info);
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bool Step(uint64_t rel_pc, Regs* regs, Memory* process_memory);
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ElfInterface* CreateInterfaceFromMemory(Memory* memory);
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uint64_t GetLoadBias();
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bool valid() { return valid_; }
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uint32_t machine_type() { return machine_type_; }
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uint8_t class_type() { return class_type_; }
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Memory* memory() { return memory_.get(); }
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ElfInterface* interface() { return interface_.get(); }
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ElfInterface* gnu_debugdata_interface() { return gnu_debugdata_interface_.get(); }
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static bool IsValidElf(Memory* memory);
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static void GetInfo(Memory* memory, bool* valid, uint64_t* size);
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protected:
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bool valid_ = false;
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std::unique_ptr<ElfInterface> interface_;
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std::unique_ptr<Memory> memory_;
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uint32_t machine_type_;
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uint8_t class_type_;
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std::unique_ptr<Memory> gnu_debugdata_memory_;
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std::unique_ptr<ElfInterface> gnu_debugdata_interface_;
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};
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} // namespace unwindstack
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#endif // _LIBUNWINDSTACK_ELF_H
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