145 lines
3.5 KiB
C++
145 lines
3.5 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_DWARF_OP_H
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#define _LIBUNWINDSTACK_DWARF_OP_H
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#include <stdint.h>
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#include <deque>
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#include <string>
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#include <type_traits>
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#include <vector>
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#include <unwindstack/DwarfError.h>
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#include "DwarfEncoding.h"
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#include "RegsInfo.h"
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namespace unwindstack {
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// Forward declarations.
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class DwarfMemory;
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class Memory;
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template <typename AddressType>
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class RegsImpl;
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template <typename AddressType>
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class DwarfOp {
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// Signed version of AddressType
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typedef typename std::make_signed<AddressType>::type SignedType;
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public:
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DwarfOp(DwarfMemory* memory, Memory* regular_memory)
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: memory_(memory), regular_memory_(regular_memory) {}
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virtual ~DwarfOp() = default;
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bool Decode();
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bool Eval(uint64_t start, uint64_t end);
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void GetLogInfo(uint64_t start, uint64_t end, std::vector<std::string>* lines);
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AddressType StackAt(size_t index) { return stack_[index]; }
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size_t StackSize() { return stack_.size(); }
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void set_regs_info(RegsInfo<AddressType>* regs_info) { regs_info_ = regs_info; }
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const DwarfErrorData& last_error() { return last_error_; }
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DwarfErrorCode LastErrorCode() { return last_error_.code; }
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uint64_t LastErrorAddress() { return last_error_.address; }
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bool dex_pc_set() { return dex_pc_set_; }
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bool is_register() { return is_register_; }
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uint8_t cur_op() { return cur_op_; }
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Memory* regular_memory() { return regular_memory_; }
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protected:
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AddressType OperandAt(size_t index) { return operands_[index]; }
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size_t OperandsSize() { return operands_.size(); }
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AddressType StackPop() {
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AddressType value = stack_.front();
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stack_.pop_front();
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return value;
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}
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private:
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DwarfMemory* memory_;
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Memory* regular_memory_;
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RegsInfo<AddressType>* regs_info_;
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bool dex_pc_set_ = false;
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bool is_register_ = false;
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DwarfErrorData last_error_{DWARF_ERROR_NONE, 0};
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uint8_t cur_op_;
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std::vector<AddressType> operands_;
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std::deque<AddressType> stack_;
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inline AddressType bool_to_dwarf_bool(bool value) { return value ? 1 : 0; }
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// Op processing functions.
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bool op_deref();
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bool op_deref_size();
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bool op_push();
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bool op_dup();
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bool op_drop();
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bool op_over();
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bool op_pick();
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bool op_swap();
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bool op_rot();
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bool op_abs();
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bool op_and();
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bool op_div();
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bool op_minus();
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bool op_mod();
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bool op_mul();
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bool op_neg();
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bool op_not();
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bool op_or();
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bool op_plus();
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bool op_plus_uconst();
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bool op_shl();
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bool op_shr();
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bool op_shra();
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bool op_xor();
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bool op_bra();
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bool op_eq();
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bool op_ge();
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bool op_gt();
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bool op_le();
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bool op_lt();
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bool op_ne();
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bool op_skip();
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bool op_lit();
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bool op_reg();
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bool op_regx();
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bool op_breg();
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bool op_bregx();
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bool op_nop();
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bool op_not_implemented();
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using OpHandleFuncPtr = bool (DwarfOp::*)();
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static const OpHandleFuncPtr kOpHandleFuncList[];
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};
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} // namespace unwindstack
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#endif // _LIBUNWINDSTACK_DWARF_OP_H
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