/*
|
* Copyright (C) 2016 The Android Open Source Project
|
*
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
* you may not use this file except in compliance with the License.
|
* You may obtain a copy of the License at
|
*
|
* http://www.apache.org/licenses/LICENSE-2.0
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*/
|
|
#ifndef _LIBUNWINDSTACK_ARM_EXIDX_H
|
#define _LIBUNWINDSTACK_ARM_EXIDX_H
|
|
#include <stdint.h>
|
|
#include <deque>
|
#include <map>
|
|
namespace unwindstack {
|
|
// Forward declarations.
|
class Memory;
|
class RegsArm;
|
|
enum ArmStatus : size_t {
|
ARM_STATUS_NONE = 0,
|
ARM_STATUS_NO_UNWIND,
|
ARM_STATUS_FINISH,
|
ARM_STATUS_RESERVED,
|
ARM_STATUS_SPARE,
|
ARM_STATUS_TRUNCATED,
|
ARM_STATUS_READ_FAILED,
|
ARM_STATUS_MALFORMED,
|
ARM_STATUS_INVALID_ALIGNMENT,
|
ARM_STATUS_INVALID_PERSONALITY,
|
};
|
|
enum ArmOp : uint8_t {
|
ARM_OP_FINISH = 0xb0,
|
};
|
|
enum ArmLogType : uint8_t {
|
ARM_LOG_NONE,
|
ARM_LOG_FULL,
|
ARM_LOG_BY_REG,
|
};
|
|
class ArmExidx {
|
public:
|
ArmExidx(RegsArm* regs, Memory* elf_memory, Memory* process_memory)
|
: regs_(regs), elf_memory_(elf_memory), process_memory_(process_memory) {}
|
virtual ~ArmExidx() {}
|
|
void LogRawData();
|
|
void LogByReg();
|
|
bool ExtractEntryData(uint32_t entry_offset);
|
|
bool Eval();
|
|
bool Decode();
|
|
std::deque<uint8_t>* data() { return &data_; }
|
|
ArmStatus status() { return status_; }
|
uint64_t status_address() { return status_address_; }
|
|
RegsArm* regs() { return regs_; }
|
|
uint32_t cfa() { return cfa_; }
|
void set_cfa(uint32_t cfa) { cfa_ = cfa; }
|
|
bool pc_set() { return pc_set_; }
|
void set_pc_set(bool pc_set) { pc_set_ = pc_set; }
|
|
void set_log(ArmLogType log_type) { log_type_ = log_type; }
|
void set_log_skip_execution(bool skip_execution) { log_skip_execution_ = skip_execution; }
|
void set_log_indent(uint8_t indent) { log_indent_ = indent; }
|
|
private:
|
bool GetByte(uint8_t* byte);
|
void AdjustRegisters(int32_t offset);
|
|
bool DecodePrefix_10_00(uint8_t byte);
|
bool DecodePrefix_10_01(uint8_t byte);
|
bool DecodePrefix_10_10(uint8_t byte);
|
bool DecodePrefix_10_11_0000();
|
bool DecodePrefix_10_11_0001();
|
bool DecodePrefix_10_11_0010();
|
bool DecodePrefix_10_11_0011();
|
bool DecodePrefix_10_11_01nn();
|
bool DecodePrefix_10_11_1nnn(uint8_t byte);
|
bool DecodePrefix_10(uint8_t byte);
|
|
bool DecodePrefix_11_000(uint8_t byte);
|
bool DecodePrefix_11_001(uint8_t byte);
|
bool DecodePrefix_11_010(uint8_t byte);
|
bool DecodePrefix_11(uint8_t byte);
|
|
RegsArm* regs_ = nullptr;
|
uint32_t cfa_ = 0;
|
std::deque<uint8_t> data_;
|
ArmStatus status_ = ARM_STATUS_NONE;
|
uint64_t status_address_ = 0;
|
|
Memory* elf_memory_;
|
Memory* process_memory_;
|
|
ArmLogType log_type_ = ARM_LOG_NONE;
|
uint8_t log_indent_ = 0;
|
bool log_skip_execution_ = false;
|
bool pc_set_ = false;
|
int32_t log_cfa_offset_ = 0;
|
std::map<uint8_t, int32_t> log_regs_;
|
};
|
|
} // namespace unwindstack
|
|
#endif // _LIBUNWINDSTACK_ARM_EXIDX_H
|
