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DwarfOp.h
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DwarfOp.h
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/*
* 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_DWARF_OP_H
#define _LIBUNWINDSTACK_DWARF_OP_H
#include <stdint.h>
#include <deque>
#include <string>
#include <type_traits>
#include <vector>
#include <unwindstack/DwarfError.h>
#include "DwarfEncoding.h"
#include "RegsInfo.h"
namespace unwindstack {
// Forward declarations.
class DwarfMemory;
class Memory;
template <typename AddressType>
class RegsImpl;
template <typename AddressType>
class DwarfOp {
// Signed version of AddressType
typedef typename std::make_signed<AddressType>::type SignedType;
struct OpCallback {
const char* name;
bool (DwarfOp::*handle_func)();
uint8_t num_required_stack_values;
uint8_t num_operands;
uint8_t operands[2];
};
public:
DwarfOp(DwarfMemory* memory, Memory* regular_memory)
: memory_(memory), regular_memory_(regular_memory) {}
virtual ~DwarfOp() = default;
bool Decode();
bool Eval(uint64_t start, uint64_t end);
void GetLogInfo(uint64_t start, uint64_t end, std::vector<std::string>* lines);
AddressType StackAt(size_t index) { return stack_[index]; }
size_t StackSize() { return stack_.size(); }
void set_regs_info(RegsInfo<AddressType>* regs_info) { regs_info_ = regs_info; }
const DwarfErrorData& last_error() { return last_error_; }
DwarfErrorCode LastErrorCode() { return last_error_.code; }
uint64_t LastErrorAddress() { return last_error_.address; }
bool dex_pc_set() { return dex_pc_set_; }
bool is_register() { return is_register_; }
uint8_t cur_op() { return cur_op_; }
Memory* regular_memory() { return regular_memory_; }
protected:
AddressType OperandAt(size_t index) { return operands_[index]; }
size_t OperandsSize() { return operands_.size(); }
AddressType StackPop() {
AddressType value = stack_.front();
stack_.pop_front();
return value;
}
private:
DwarfMemory* memory_;
Memory* regular_memory_;
RegsInfo<AddressType>* regs_info_;
bool dex_pc_set_ = false;
bool is_register_ = false;
DwarfErrorData last_error_{DWARF_ERROR_NONE, 0};
uint8_t cur_op_;
std::vector<AddressType> operands_;
std::deque<AddressType> stack_;
inline AddressType bool_to_dwarf_bool(bool value) { return value ? 1 : 0; }
// Op processing functions.
bool op_deref();
bool op_deref_size();
bool op_push();
bool op_dup();
bool op_drop();
bool op_over();
bool op_pick();
bool op_swap();
bool op_rot();
bool op_abs();
bool op_and();
bool op_div();
bool op_minus();
bool op_mod();
bool op_mul();
bool op_neg();
bool op_not();
bool op_or();
bool op_plus();
bool op_plus_uconst();
bool op_shl();
bool op_shr();
bool op_shra();
bool op_xor();
bool op_bra();
bool op_eq();
bool op_ge();
bool op_gt();
bool op_le();
bool op_lt();
bool op_ne();
bool op_skip();
bool op_lit();
bool op_reg();
bool op_regx();
bool op_breg();
bool op_bregx();
bool op_nop();
bool op_not_implemented();
constexpr static OpCallback kCallbackTable[256] = {
{nullptr, nullptr, 0, 0, {}}, // 0x00 illegal op
{nullptr, nullptr, 0, 0, {}}, // 0x01 illegal op
{nullptr, nullptr, 0, 0, {}}, // 0x02 illegal op
{
// 0x03 DW_OP_addr
"DW_OP_addr",
&DwarfOp::op_push,
0,
1,
{DW_EH_PE_absptr},
},
{nullptr, nullptr, 0, 0, {}}, // 0x04 illegal op
{nullptr, nullptr, 0, 0, {}}, // 0x05 illegal op
{
// 0x06 DW_OP_deref
"DW_OP_deref",
&DwarfOp::op_deref,
1,
0,
{},
},
{nullptr, nullptr, 0, 0, {}}, // 0x07 illegal op
{
// 0x08 DW_OP_const1u
"DW_OP_const1u",
&DwarfOp::op_push,
0,
1,
{DW_EH_PE_udata1},
},
{
// 0x09 DW_OP_const1s
"DW_OP_const1s",
&DwarfOp::op_push,
0,
1,
{DW_EH_PE_sdata1},
},
{
// 0x0a DW_OP_const2u
"DW_OP_const2u",
&DwarfOp::op_push,
0,
1,
{DW_EH_PE_udata2},
},
{
// 0x0b DW_OP_const2s
"DW_OP_const2s",
&DwarfOp::op_push,
0,
1,
{DW_EH_PE_sdata2},
},
{
// 0x0c DW_OP_const4u
"DW_OP_const4u",
&DwarfOp::op_push,
0,
1,
{DW_EH_PE_udata4},
},
{
// 0x0d DW_OP_const4s
"DW_OP_const4s",
&DwarfOp::op_push,
0,
1,
{DW_EH_PE_sdata4},
},
{
// 0x0e DW_OP_const8u
"DW_OP_const8u",
&DwarfOp::op_push,
0,
1,
{DW_EH_PE_udata8},
},
{
// 0x0f DW_OP_const8s
"DW_OP_const8s",
&DwarfOp::op_push,
0,
1,
{DW_EH_PE_sdata8},
},
{
// 0x10 DW_OP_constu
"DW_OP_constu",
&DwarfOp::op_push,
0,
1,
{DW_EH_PE_uleb128},
},
{
// 0x11 DW_OP_consts
"DW_OP_consts",
&DwarfOp::op_push,
0,
1,
{DW_EH_PE_sleb128},
},
{
// 0x12 DW_OP_dup
"DW_OP_dup",
&DwarfOp::op_dup,
1,
0,
{},
},
{
// 0x13 DW_OP_drop
"DW_OP_drop",
&DwarfOp::op_drop,
1,
0,
{},
},
{
// 0x14 DW_OP_over
"DW_OP_over",
&DwarfOp::op_over,
2,
0,
{},
},
{
// 0x15 DW_OP_pick
"DW_OP_pick",
&DwarfOp::op_pick,
0,
1,
{DW_EH_PE_udata1},
},
{
// 0x16 DW_OP_swap
"DW_OP_swap",
&DwarfOp::op_swap,
2,
0,
{},
},
{
// 0x17 DW_OP_rot
"DW_OP_rot",
&DwarfOp::op_rot,
3,
0,
{},
},
{
// 0x18 DW_OP_xderef
"DW_OP_xderef",
&DwarfOp::op_not_implemented,
2,
0,
{},
},
{
// 0x19 DW_OP_abs
"DW_OP_abs",
&DwarfOp::op_abs,
1,
0,
{},
},
{
// 0x1a DW_OP_and
"DW_OP_and",
&DwarfOp::op_and,
2,
0,
{},
},
{
// 0x1b DW_OP_div
"DW_OP_div",
&DwarfOp::op_div,
2,
0,
{},
},
{
// 0x1c DW_OP_minus
"DW_OP_minus",
&DwarfOp::op_minus,
2,
0,
{},
},
{
// 0x1d DW_OP_mod
"DW_OP_mod",
&DwarfOp::op_mod,
2,
0,
{},
},
{
// 0x1e DW_OP_mul
"DW_OP_mul",
&DwarfOp::op_mul,
2,
0,
{},
},
{
// 0x1f DW_OP_neg
"DW_OP_neg",
&DwarfOp::op_neg,
1,
0,
{},
},
{
// 0x20 DW_OP_not
"DW_OP_not",
&DwarfOp::op_not,
1,
0,
{},
},
{
// 0x21 DW_OP_or
"DW_OP_or",
&DwarfOp::op_or,
2,
0,
{},
},
{
// 0x22 DW_OP_plus
"DW_OP_plus",
&DwarfOp::op_plus,
2,
0,
{},
},
{
// 0x23 DW_OP_plus_uconst
"DW_OP_plus_uconst",
&DwarfOp::op_plus_uconst,
1,
1,
{DW_EH_PE_uleb128},
},
{
// 0x24 DW_OP_shl
"DW_OP_shl",
&DwarfOp::op_shl,
2,
0,
{},
},
{
// 0x25 DW_OP_shr
"DW_OP_shr",
&DwarfOp::op_shr,
2,
0,
{},
},
{
// 0x26 DW_OP_shra
"DW_OP_shra",
&DwarfOp::op_shra,
2,
0,
{},
},
{
// 0x27 DW_OP_xor
"DW_OP_xor",
&DwarfOp::op_xor,
2,
0,
{},
},
{
// 0x28 DW_OP_bra
"DW_OP_bra",
&DwarfOp::op_bra,
1,
1,
{DW_EH_PE_sdata2},
},
{
// 0x29 DW_OP_eq
"DW_OP_eq",
&DwarfOp::op_eq,
2,
0,
{},
},
{
// 0x2a DW_OP_ge
"DW_OP_ge",
&DwarfOp::op_ge,
2,
0,
{},
},
{
// 0x2b DW_OP_gt
"DW_OP_gt",
&DwarfOp::op_gt,
2,
0,
{},
},
{
// 0x2c DW_OP_le
"DW_OP_le",
&DwarfOp::op_le,
2,
0,
{},
},
{
// 0x2d DW_OP_lt
"DW_OP_lt",
&DwarfOp::op_lt,
2,
0,
{},
},
{
// 0x2e DW_OP_ne
"DW_OP_ne",
&DwarfOp::op_ne,
2,
0,
{},
},
{
// 0x2f DW_OP_skip
"DW_OP_skip",
&DwarfOp::op_skip,
0,
1,
{DW_EH_PE_sdata2},
},
{
// 0x30 DW_OP_lit0
"DW_OP_lit0",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x31 DW_OP_lit1
"DW_OP_lit1",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x32 DW_OP_lit2
"DW_OP_lit2",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x33 DW_OP_lit3
"DW_OP_lit3",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x34 DW_OP_lit4
"DW_OP_lit4",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x35 DW_OP_lit5
"DW_OP_lit5",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x36 DW_OP_lit6
"DW_OP_lit6",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x37 DW_OP_lit7
"DW_OP_lit7",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x38 DW_OP_lit8
"DW_OP_lit8",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x39 DW_OP_lit9
"DW_OP_lit9",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x3a DW_OP_lit10
"DW_OP_lit10",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x3b DW_OP_lit11
"DW_OP_lit11",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x3c DW_OP_lit12
"DW_OP_lit12",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x3d DW_OP_lit13
"DW_OP_lit13",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x3e DW_OP_lit14
"DW_OP_lit14",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x3f DW_OP_lit15
"DW_OP_lit15",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x40 DW_OP_lit16
"DW_OP_lit16",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x41 DW_OP_lit17
"DW_OP_lit17",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x42 DW_OP_lit18
"DW_OP_lit18",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x43 DW_OP_lit19
"DW_OP_lit19",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x44 DW_OP_lit20
"DW_OP_lit20",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x45 DW_OP_lit21
"DW_OP_lit21",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x46 DW_OP_lit22
"DW_OP_lit22",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x47 DW_OP_lit23
"DW_OP_lit23",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x48 DW_OP_lit24
"DW_OP_lit24",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x49 DW_OP_lit25
"DW_OP_lit25",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x4a DW_OP_lit26
"DW_OP_lit26",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x4b DW_OP_lit27
"DW_OP_lit27",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x4c DW_OP_lit28
"DW_OP_lit28",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x4d DW_OP_lit29
"DW_OP_lit29",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x4e DW_OP_lit30
"DW_OP_lit30",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x4f DW_OP_lit31
"DW_OP_lit31",
&DwarfOp::op_lit,
0,
0,
{},
},
{
// 0x50 DW_OP_reg0
"DW_OP_reg0",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x51 DW_OP_reg1
"DW_OP_reg1",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x52 DW_OP_reg2
"DW_OP_reg2",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x53 DW_OP_reg3
"DW_OP_reg3",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x54 DW_OP_reg4
"DW_OP_reg4",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x55 DW_OP_reg5
"DW_OP_reg5",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x56 DW_OP_reg6
"DW_OP_reg6",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x57 DW_OP_reg7
"DW_OP_reg7",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x58 DW_OP_reg8
"DW_OP_reg8",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x59 DW_OP_reg9
"DW_OP_reg9",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x5a DW_OP_reg10
"DW_OP_reg10",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x5b DW_OP_reg11
"DW_OP_reg11",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x5c DW_OP_reg12
"DW_OP_reg12",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x5d DW_OP_reg13
"DW_OP_reg13",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x5e DW_OP_reg14
"DW_OP_reg14",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x5f DW_OP_reg15
"DW_OP_reg15",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x60 DW_OP_reg16
"DW_OP_reg16",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x61 DW_OP_reg17
"DW_OP_reg17",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x62 DW_OP_reg18
"DW_OP_reg18",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x63 DW_OP_reg19
"DW_OP_reg19",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x64 DW_OP_reg20
"DW_OP_reg20",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x65 DW_OP_reg21
"DW_OP_reg21",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x66 DW_OP_reg22
"DW_OP_reg22",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x67 DW_OP_reg23
"DW_OP_reg23",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x68 DW_OP_reg24
"DW_OP_reg24",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x69 DW_OP_reg25
"DW_OP_reg25",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x6a DW_OP_reg26
"DW_OP_reg26",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x6b DW_OP_reg27
"DW_OP_reg27",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x6c DW_OP_reg28
"DW_OP_reg28",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x6d DW_OP_reg29
"DW_OP_reg29",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x6e DW_OP_reg30
"DW_OP_reg30",
&DwarfOp::op_reg,
0,
0,
{},
},
{
// 0x6f DW_OP_reg31
"DW_OP_reg31",
&DwarfOp::op_reg,
0,
0,
{},
},