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
69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
/*
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* Copyright (C) 2017 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_JIT_DEBUG_H
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#define _LIBUNWINDSTACK_JIT_DEBUG_H
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#include <stdint.h>
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#include <memory>
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#include <mutex>
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#include <string>
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#include <vector>
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namespace unwindstack {
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// Forward declarations.
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class Elf;
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class Maps;
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class Memory;
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enum ArchEnum : uint8_t;
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class JitDebug {
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public:
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explicit JitDebug(std::shared_ptr<Memory>& memory);
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JitDebug(std::shared_ptr<Memory>& memory, std::vector<std::string>& search_libs);
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~JitDebug();
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Elf* GetElf(Maps* maps, uint64_t pc);
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void SetArch(ArchEnum arch);
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private:
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void Init(Maps* maps);
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std::shared_ptr<Memory> memory_;
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uint64_t entry_addr_ = 0;
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bool initialized_ = false;
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std::vector<Elf*> elf_list_;
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std::vector<std::string> search_libs_;
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std::mutex lock_;
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uint64_t (JitDebug::*read_descriptor_func_)(uint64_t) = nullptr;
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uint64_t (JitDebug::*read_entry_func_)(uint64_t*, uint64_t*) = nullptr;
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uint64_t ReadDescriptor32(uint64_t);
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uint64_t ReadDescriptor64(uint64_t);
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uint64_t ReadEntry32Pack(uint64_t* start, uint64_t* size);
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uint64_t ReadEntry32Pad(uint64_t* start, uint64_t* size);
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uint64_t ReadEntry64(uint64_t* start, uint64_t* size);
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};
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} // namespace unwindstack
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#endif // _LIBUNWINDSTACK_JIT_DEBUG_H
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