127 lines
3.2 KiB
C++
127 lines
3.2 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_ARM_EXIDX_H
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#define _LIBUNWINDSTACK_ARM_EXIDX_H
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#include <stdint.h>
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#include <deque>
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#include <map>
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namespace unwindstack {
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// Forward declarations.
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class Memory;
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class RegsArm;
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enum ArmStatus : size_t {
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ARM_STATUS_NONE = 0,
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ARM_STATUS_NO_UNWIND,
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ARM_STATUS_FINISH,
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ARM_STATUS_RESERVED,
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ARM_STATUS_SPARE,
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ARM_STATUS_TRUNCATED,
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ARM_STATUS_READ_FAILED,
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ARM_STATUS_MALFORMED,
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ARM_STATUS_INVALID_ALIGNMENT,
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ARM_STATUS_INVALID_PERSONALITY,
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};
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enum ArmOp : uint8_t {
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ARM_OP_FINISH = 0xb0,
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};
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enum ArmLogType : uint8_t {
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ARM_LOG_NONE,
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ARM_LOG_FULL,
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ARM_LOG_BY_REG,
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};
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class ArmExidx {
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public:
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ArmExidx(RegsArm* regs, Memory* elf_memory, Memory* process_memory)
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: regs_(regs), elf_memory_(elf_memory), process_memory_(process_memory) {}
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virtual ~ArmExidx() {}
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void LogRawData();
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void LogByReg();
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bool ExtractEntryData(uint32_t entry_offset);
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bool Eval();
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bool Decode();
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std::deque<uint8_t>* data() { return &data_; }
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ArmStatus status() { return status_; }
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uint64_t status_address() { return status_address_; }
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RegsArm* regs() { return regs_; }
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uint32_t cfa() { return cfa_; }
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void set_cfa(uint32_t cfa) { cfa_ = cfa; }
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bool pc_set() { return pc_set_; }
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void set_pc_set(bool pc_set) { pc_set_ = pc_set; }
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void set_log(ArmLogType log_type) { log_type_ = log_type; }
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void set_log_skip_execution(bool skip_execution) { log_skip_execution_ = skip_execution; }
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void set_log_indent(uint8_t indent) { log_indent_ = indent; }
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private:
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bool GetByte(uint8_t* byte);
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void AdjustRegisters(int32_t offset);
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bool DecodePrefix_10_00(uint8_t byte);
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bool DecodePrefix_10_01(uint8_t byte);
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bool DecodePrefix_10_10(uint8_t byte);
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bool DecodePrefix_10_11_0000();
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bool DecodePrefix_10_11_0001();
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bool DecodePrefix_10_11_0010();
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bool DecodePrefix_10_11_0011();
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bool DecodePrefix_10_11_01nn();
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bool DecodePrefix_10_11_1nnn(uint8_t byte);
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bool DecodePrefix_10(uint8_t byte);
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bool DecodePrefix_11_000(uint8_t byte);
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bool DecodePrefix_11_001(uint8_t byte);
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bool DecodePrefix_11_010(uint8_t byte);
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bool DecodePrefix_11(uint8_t byte);
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RegsArm* regs_ = nullptr;
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uint32_t cfa_ = 0;
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std::deque<uint8_t> data_;
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ArmStatus status_ = ARM_STATUS_NONE;
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uint64_t status_address_ = 0;
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Memory* elf_memory_;
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Memory* process_memory_;
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ArmLogType log_type_ = ARM_LOG_NONE;
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uint8_t log_indent_ = 0;
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bool log_skip_execution_ = false;
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bool pc_set_ = false;
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int32_t log_cfa_offset_ = 0;
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std::map<uint8_t, int32_t> log_regs_;
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};
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} // namespace unwindstack
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#endif // _LIBUNWINDSTACK_ARM_EXIDX_H
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