150db124f3
Changes: - New JitDebug class to handle all of the jit gdb interface. - Add unit tests for all, along with new offline test using debug data. - Add new Memory type called MemoryOfflineParts that has multiple MemoryOffline objects to support the offline test. - Update the tools to use the JitDebug object. - Modify libbacktrace to use the JitDebug, but only looking in libart.so and libartd.so. - Change the Format32Bits to Is32Bit since it's more accurate and I use it in a different context where original name didn't make sense. - Add a new function to find global variables in an elf file (GetGlobalVariable). - Add a new function to determine if a pc is valid for this elf (IsValidPc). Bug: 68396769 Test: Ran new unit tests. Added new offline test that uses jit debug data. Test: Ran art test that generates jit data and verified a crash unwinds Test: through the jit data. Change-Id: I6e7ee2f5bab2242028a06feece156dff21c0a974
112 lines
2.7 KiB
C++
112 lines
2.7 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 <mutex>
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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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enum ArchEnum : uint8_t {
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ARCH_UNKNOWN = 0,
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ARCH_ARM,
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ARCH_ARM64,
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ARCH_X86,
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ARCH_X86_64,
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ARCH_MIPS,
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ARCH_MIPS64,
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};
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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(bool init_gnu_debugdata);
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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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bool GetGlobalVariable(const std::string& name, uint64_t* memory_address);
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uint64_t GetRelPc(uint64_t pc, const MapInfo* map_info);
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bool Step(uint64_t rel_pc, uint64_t adjusted_rel_pc, uint64_t elf_offset, Regs* regs,
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Memory* process_memory, bool* finished);
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ElfInterface* CreateInterfaceFromMemory(Memory* memory);
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uint64_t GetLoadBias() { return load_bias_; }
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bool IsValidPc(uint64_t pc);
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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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ArchEnum arch() { return arch_; }
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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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static uint64_t GetLoadBias(Memory* memory);
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protected:
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bool valid_ = false;
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uint64_t load_bias_ = 0;
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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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ArchEnum arch_;
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// Protect calls that can modify internal state of the interface object.
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std::mutex lock_;
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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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