sandy
/
PL286
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1 Commit
1 Branch
0 Tags
18 GiB
Tree: 99da0f2c72
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '99da0f2c72'
${ noResults }
PL286/system/core/libunwindstack/DwarfCfa.cpp

718 lines
22 KiB
Raw Blame History

/*
* 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.
*/
#include <inttypes.h>
#include <stdint.h>
#include <string>
#include <type_traits>
#include <vector>
#include <android-base/stringprintf.h>
#include <unwindstack/DwarfLocation.h>
#include <unwindstack/Log.h>
#include "DwarfCfa.h"
#include "DwarfEncoding.h"
#include "DwarfError.h"
#include "DwarfOp.h"
namespace unwindstack {
template <typename AddressType>
constexpr typename DwarfCfa<AddressType>::process_func DwarfCfa<AddressType>::kCallbackTable[64];
template <typename AddressType>
bool DwarfCfa<AddressType>::GetLocationInfo(uint64_t pc, uint64_t start_offset, uint64_t end_offset,
dwarf_loc_regs_t* loc_regs) {
if (cie_loc_regs_ != nullptr) {
for (const auto& entry : *cie_loc_regs_) {
(*loc_regs)[entry.first] = entry.second;
}
}
last_error_ = DWARF_ERROR_NONE;
memory_->set_cur_offset(start_offset);
uint64_t cfa_offset;
cur_pc_ = fde_->pc_start;
while ((cfa_offset = memory_->cur_offset()) < end_offset && cur_pc_ <= pc) {
operands_.clear();
// Read the cfa information.
uint8_t cfa_value;
if (!memory_->ReadBytes(&cfa_value, 1)) {
last_error_ = DWARF_ERROR_MEMORY_INVALID;
return false;
}
uint8_t cfa_low = cfa_value & 0x3f;
// Check the 2 high bits.
switch (cfa_value >> 6) {
case 1:
cur_pc_ += cfa_low * fde_->cie->code_alignment_factor;
break;
case 2: {
uint64_t offset;
if (!memory_->ReadULEB128(&offset)) {
last_error_ = DWARF_ERROR_MEMORY_INVALID;
return false;
}
SignedType signed_offset =
static_cast<SignedType>(offset) * fde_->cie->data_alignment_factor;
(*loc_regs)[cfa_low] = {.type = DWARF_LOCATION_OFFSET,
.values = {static_cast<uint64_t>(signed_offset)}};
break;
}
case 3: {
if (cie_loc_regs_ == nullptr) {
log(0, "restore while processing cie");
last_error_ = DWARF_ERROR_ILLEGAL_STATE;
return false;
}
auto reg_entry = cie_loc_regs_->find(cfa_low);
if (reg_entry == cie_loc_regs_->end()) {
loc_regs->erase(cfa_low);
} else {
(*loc_regs)[cfa_low] = reg_entry->second;
}
break;
}
case 0: {
const auto handle_func = DwarfCfa<AddressType>::kCallbackTable[cfa_low];
if (handle_func == nullptr) {
last_error_ = DWARF_ERROR_ILLEGAL_VALUE;
return false;
}
const auto cfa = &DwarfCfaInfo::kTable[cfa_low];
for (size_t i = 0; i < cfa->num_operands; i++) {
if (cfa->operands[i] == DW_EH_PE_block) {
uint64_t block_length;
if (!memory_->ReadULEB128(&block_length)) {
last_error_ = DWARF_ERROR_MEMORY_INVALID;
return false;
}
operands_.push_back(block_length);
memory_->set_cur_offset(memory_->cur_offset() + block_length);
continue;
}
uint64_t value;
if (!memory_->ReadEncodedValue<AddressType>(cfa->operands[i], &value)) {
last_error_ = DWARF_ERROR_MEMORY_INVALID;
return false;
}
operands_.push_back(value);
}
if (!(this->*handle_func)(loc_regs)) {
return false;
}
break;
}
}
}
return true;
}
template <typename AddressType>
std::string DwarfCfa<AddressType>::GetOperandString(uint8_t operand, uint64_t value,
uint64_t* cur_pc) {
std::string string;
switch (operand) {
case DwarfCfaInfo::DWARF_DISPLAY_REGISTER:
string = " register(" + std::to_string(value) + ")";
break;
case DwarfCfaInfo::DWARF_DISPLAY_SIGNED_NUMBER:
string += " " + std::to_string(static_cast<SignedType>(value));
break;
case DwarfCfaInfo::DWARF_DISPLAY_ADVANCE_LOC:
*cur_pc += value;
// Fall through to log the value.
case DwarfCfaInfo::DWARF_DISPLAY_NUMBER:
string += " " + std::to_string(value);
break;
case DwarfCfaInfo::DWARF_DISPLAY_SET_LOC:
*cur_pc = value;
// Fall through to log the value.
case DwarfCfaInfo::DWARF_DISPLAY_ADDRESS:
if (std::is_same<AddressType, uint32_t>::value) {
string += android::base::StringPrintf(" 0x%" PRIx32, static_cast<uint32_t>(value));
} else {
string += android::base::StringPrintf(" 0x%" PRIx64, static_cast<uint64_t>(value));
}
break;
default:
string = " unknown";
}
return string;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::LogOffsetRegisterString(uint32_t indent, uint64_t cfa_offset,
uint8_t reg) {
uint64_t offset;
if (!memory_->ReadULEB128(&offset)) {
return false;
}
uint64_t end_offset = memory_->cur_offset();
memory_->set_cur_offset(cfa_offset);
std::string raw_data = "Raw Data:";
for (uint64_t i = cfa_offset; i < end_offset; i++) {
uint8_t value;
if (!memory_->ReadBytes(&value, 1)) {
return false;
}
raw_data += android::base::StringPrintf(" 0x%02x", value);
}
log(indent, "DW_CFA_offset register(%d) %" PRId64, reg, offset);
log(indent, "%s", raw_data.c_str());
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::LogInstruction(uint32_t indent, uint64_t cfa_offset, uint8_t op,
uint64_t* cur_pc) {
const auto* cfa = &DwarfCfaInfo::kTable[op];
if (cfa->name == nullptr) {
log(indent, "Illegal");
log(indent, "Raw Data: 0x%02x", op);
return true;
}
std::string log_string(cfa->name);
std::vector<std::string> expression_lines;
for (size_t i = 0; i < cfa->num_operands; i++) {
if (cfa->operands[i] == DW_EH_PE_block) {
// This is a Dwarf Expression.
uint64_t end_offset;
if (!memory_->ReadULEB128(&end_offset)) {
return false;
}
log_string += " " + std::to_string(end_offset);
end_offset += memory_->cur_offset();
DwarfOp<AddressType> op(memory_, nullptr);
op.GetLogInfo(memory_->cur_offset(), end_offset, &expression_lines);
memory_->set_cur_offset(end_offset);
} else {
uint64_t value;
if (!memory_->ReadEncodedValue<AddressType>(cfa->operands[i], &value)) {
return false;
}
log_string += GetOperandString(cfa->display_operands[i], value, cur_pc);
}
}
log(indent, "%s", log_string.c_str());
// Get the raw bytes of the data.
uint64_t end_offset = memory_->cur_offset();
memory_->set_cur_offset(cfa_offset);
std::string raw_data("Raw Data:");
for (uint64_t i = 0; i < end_offset - cfa_offset; i++) {
uint8_t value;
if (!memory_->ReadBytes(&value, 1)) {
return false;
}
// Only show 10 raw bytes per line.
if ((i % 10) == 0 && i != 0) {
log(indent, "%s", raw_data.c_str());
raw_data.clear();
}
if (raw_data.empty()) {
raw_data = "Raw Data:";
}
raw_data += android::base::StringPrintf(" 0x%02x", value);
}
if (!raw_data.empty()) {
log(indent, "%s", raw_data.c_str());
}
// Log any of the expression data.
for (const auto line : expression_lines) {
log(indent + 1, "%s", line.c_str());
}
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::Log(uint32_t indent, uint64_t pc, uint64_t load_bias,
uint64_t start_offset, uint64_t end_offset) {
memory_->set_cur_offset(start_offset);
uint64_t cfa_offset;
uint64_t cur_pc = fde_->pc_start;
uint64_t old_pc = cur_pc;
while ((cfa_offset = memory_->cur_offset()) < end_offset && cur_pc <= pc) {
// Read the cfa information.
uint8_t cfa_value;
if (!memory_->ReadBytes(&cfa_value, 1)) {
return false;
}
// Check the 2 high bits.
uint8_t cfa_low = cfa_value & 0x3f;
switch (cfa_value >> 6) {
case 0:
if (!LogInstruction(indent, cfa_offset, cfa_low, &cur_pc)) {
return false;
}
break;
case 1:
log(indent, "DW_CFA_advance_loc %d", cfa_low);
log(indent, "Raw Data: 0x%02x", cfa_value);
cur_pc += cfa_low * fde_->cie->code_alignment_factor;
break;
case 2:
if (!LogOffsetRegisterString(indent, cfa_offset, cfa_low)) {
return false;
}
break;
case 3:
log(indent, "DW_CFA_restore register(%d)", cfa_low);
log(indent, "Raw Data: 0x%02x", cfa_value);
break;
}
if (cur_pc != old_pc) {
log(indent, "");
log(indent, "PC 0x%" PRIx64, cur_pc + load_bias);
}
old_pc = cur_pc;
}
return true;
}
// Static data.
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_nop(dwarf_loc_regs_t*) {
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_set_loc(dwarf_loc_regs_t*) {
AddressType cur_pc = cur_pc_;
AddressType new_pc = operands_[0];
if (new_pc < cur_pc) {
if (std::is_same<AddressType, uint32_t>::value) {
log(0, "Warning: PC is moving backwards: old 0x%" PRIx32 " new 0x%" PRIx32, cur_pc, new_pc);
} else {
log(0, "Warning: PC is moving backwards: old 0x%" PRIx64 " new 0x%" PRIx64, cur_pc, new_pc);
}
}
cur_pc_ = new_pc;
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_advance_loc(dwarf_loc_regs_t*) {
cur_pc_ += operands_[0] * fde_->cie->code_alignment_factor;
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_offset(dwarf_loc_regs_t* loc_regs) {
AddressType reg = operands_[0];
(*loc_regs)[reg] = {.type = DWARF_LOCATION_OFFSET, .values = {operands_[1]}};
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_restore(dwarf_loc_regs_t* loc_regs) {
AddressType reg = operands_[0];
if (cie_loc_regs_ == nullptr) {
log(0, "restore while processing cie");
last_error_ = DWARF_ERROR_ILLEGAL_STATE;
return false;
}
auto reg_entry = cie_loc_regs_->find(reg);
if (reg_entry == cie_loc_regs_->end()) {
loc_regs->erase(reg);
} else {
(*loc_regs)[reg] = reg_entry->second;
}
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_undefined(dwarf_loc_regs_t* loc_regs) {
AddressType reg = operands_[0];
(*loc_regs)[reg] = {.type = DWARF_LOCATION_UNDEFINED};
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_same_value(dwarf_loc_regs_t* loc_regs) {
AddressType reg = operands_[0];
loc_regs->erase(reg);
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_register(dwarf_loc_regs_t* loc_regs) {
AddressType reg = operands_[0];
AddressType reg_dst = operands_[1];
(*loc_regs)[reg] = {.type = DWARF_LOCATION_REGISTER, .values = {reg_dst}};
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_remember_state(dwarf_loc_regs_t* loc_regs) {
loc_reg_state_.push(*loc_regs);
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_restore_state(dwarf_loc_regs_t* loc_regs) {
if (loc_reg_state_.size() == 0) {
log(0, "Warning: Attempt to restore without remember.");
return true;
}
*loc_regs = loc_reg_state_.top();
loc_reg_state_.pop();
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_def_cfa(dwarf_loc_regs_t* loc_regs) {
(*loc_regs)[CFA_REG] = {.type = DWARF_LOCATION_REGISTER, .values = {operands_[0], operands_[1]}};
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_def_cfa_register(dwarf_loc_regs_t* loc_regs) {
auto cfa_location = loc_regs->find(CFA_REG);
if (cfa_location == loc_regs->end() || cfa_location->second.type != DWARF_LOCATION_REGISTER) {
log(0, "Attempt to set new register, but cfa is not already set to a register.");
last_error_ = DWARF_ERROR_ILLEGAL_STATE;
return false;
}
cfa_location->second.values[0] = operands_[0];
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_def_cfa_offset(dwarf_loc_regs_t* loc_regs) {
// Changing the offset if this is not a register is illegal.
auto cfa_location = loc_regs->find(CFA_REG);
if (cfa_location == loc_regs->end() || cfa_location->second.type != DWARF_LOCATION_REGISTER) {
log(0, "Attempt to set offset, but cfa is not set to a register.");
last_error_ = DWARF_ERROR_ILLEGAL_STATE;
return false;
}
cfa_location->second.values[1] = operands_[0];
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_def_cfa_expression(dwarf_loc_regs_t* loc_regs) {
(*loc_regs)[CFA_REG] = {.type = DWARF_LOCATION_EXPRESSION,
.values = {operands_[0], memory_->cur_offset()}};
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_expression(dwarf_loc_regs_t* loc_regs) {
AddressType reg = operands_[0];
(*loc_regs)[reg] = {.type = DWARF_LOCATION_EXPRESSION,
.values = {operands_[1], memory_->cur_offset()}};
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_offset_extended_sf(dwarf_loc_regs_t* loc_regs) {
AddressType reg = operands_[0];
SignedType value = static_cast<SignedType>(operands_[1]) * fde_->cie->data_alignment_factor;
(*loc_regs)[reg] = {.type = DWARF_LOCATION_OFFSET, .values = {static_cast<uint64_t>(value)}};
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_def_cfa_sf(dwarf_loc_regs_t* loc_regs) {
SignedType offset = static_cast<SignedType>(operands_[1]) * fde_->cie->data_alignment_factor;
(*loc_regs)[CFA_REG] = {.type = DWARF_LOCATION_REGISTER,
.values = {operands_[0], static_cast<uint64_t>(offset)}};
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_def_cfa_offset_sf(dwarf_loc_regs_t* loc_regs) {
// Changing the offset if this is not a register is illegal.
auto cfa_location = loc_regs->find(CFA_REG);
if (cfa_location == loc_regs->end() || cfa_location->second.type != DWARF_LOCATION_REGISTER) {
log(0, "Attempt to set offset, but cfa is not set to a register.");
last_error_ = DWARF_ERROR_ILLEGAL_STATE;
return false;
}
SignedType offset = static_cast<SignedType>(operands_[0]) * fde_->cie->data_alignment_factor;
cfa_location->second.values[1] = static_cast<uint64_t>(offset);
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_val_offset(dwarf_loc_regs_t* loc_regs) {
AddressType reg = operands_[0];
SignedType offset = static_cast<SignedType>(operands_[1]) * fde_->cie->data_alignment_factor;
(*loc_regs)[reg] = {.type = DWARF_LOCATION_VAL_OFFSET, .values = {static_cast<uint64_t>(offset)}};
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_val_offset_sf(dwarf_loc_regs_t* loc_regs) {
AddressType reg = operands_[0];
SignedType offset = static_cast<SignedType>(operands_[1]) * fde_->cie->data_alignment_factor;
(*loc_regs)[reg] = {.type = DWARF_LOCATION_VAL_OFFSET, .values = {static_cast<uint64_t>(offset)}};
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_val_expression(dwarf_loc_regs_t* loc_regs) {
AddressType reg = operands_[0];
(*loc_regs)[reg] = {.type = DWARF_LOCATION_VAL_EXPRESSION,
.values = {operands_[1], memory_->cur_offset()}};
return true;
}
template <typename AddressType>
bool DwarfCfa<AddressType>::cfa_gnu_negative_offset_extended(dwarf_loc_regs_t* loc_regs) {
AddressType reg = operands_[0];
SignedType offset = -static_cast<SignedType>(operands_[1]);
(*loc_regs)[reg] = {.type = DWARF_LOCATION_OFFSET, .values = {static_cast<uint64_t>(offset)}};
return true;
}
const DwarfCfaInfo::Info DwarfCfaInfo::kTable[64] = {
{
// 0x00 DW_CFA_nop
"DW_CFA_nop",
2,
0,
{},
{},
},
{
"DW_CFA_set_loc", // 0x01 DW_CFA_set_loc
2,
1,
{DW_EH_PE_absptr},
{DWARF_DISPLAY_SET_LOC},
},
{
"DW_CFA_advance_loc1", // 0x02 DW_CFA_advance_loc1
2,
1,
{DW_EH_PE_udata1},
{DWARF_DISPLAY_ADVANCE_LOC},
},
{
"DW_CFA_advance_loc2", // 0x03 DW_CFA_advance_loc2
2,
1,
{DW_EH_PE_udata2},
{DWARF_DISPLAY_ADVANCE_LOC},
},
{
"DW_CFA_advance_loc4", // 0x04 DW_CFA_advance_loc4
2,
1,
{DW_EH_PE_udata4},
{DWARF_DISPLAY_ADVANCE_LOC},
},
{
"DW_CFA_offset_extended", // 0x05 DW_CFA_offset_extended
2,
2,
{DW_EH_PE_uleb128, DW_EH_PE_uleb128},
{DWARF_DISPLAY_REGISTER, DWARF_DISPLAY_NUMBER},
},
{
"DW_CFA_restore_extended", // 0x06 DW_CFA_restore_extended
2,
1,
{DW_EH_PE_uleb128},
{DWARF_DISPLAY_REGISTER},
},
{
"DW_CFA_undefined", // 0x07 DW_CFA_undefined
2,
1,
{DW_EH_PE_uleb128},
{DWARF_DISPLAY_REGISTER},
},
{
"DW_CFA_same_value", // 0x08 DW_CFA_same_value
2,
1,
{DW_EH_PE_uleb128},
{DWARF_DISPLAY_REGISTER},
},
{
"DW_CFA_register", // 0x09 DW_CFA_register
2,
2,
{DW_EH_PE_uleb128, DW_EH_PE_uleb128},
{DWARF_DISPLAY_REGISTER, DWARF_DISPLAY_REGISTER},
},
{
"DW_CFA_remember_state", // 0x0a DW_CFA_remember_state
2,
0,
{},
{},
},
{
"DW_CFA_restore_state", // 0x0b DW_CFA_restore_state
2,
0,
{},
{},
},
{
"DW_CFA_def_cfa", // 0x0c DW_CFA_def_cfa
2,
2,
{DW_EH_PE_uleb128, DW_EH_PE_uleb128},
{DWARF_DISPLAY_REGISTER, DWARF_DISPLAY_NUMBER},
},
{
"DW_CFA_def_cfa_register", // 0x0d DW_CFA_def_cfa_register
2,
1,
{DW_EH_PE_uleb128},
{DWARF_DISPLAY_REGISTER},
},
{
"DW_CFA_def_cfa_offset", // 0x0e DW_CFA_def_cfa_offset
2,
1,
{DW_EH_PE_uleb128},
{DWARF_DISPLAY_NUMBER},
},
{
"DW_CFA_def_cfa_expression", // 0x0f DW_CFA_def_cfa_expression
2,
1,
{DW_EH_PE_block},
{DWARF_DISPLAY_EVAL_BLOCK},
},
{
"DW_CFA_expression", // 0x10 DW_CFA_expression
2,
2,
{DW_EH_PE_uleb128, DW_EH_PE_block},
{DWARF_DISPLAY_REGISTER, DWARF_DISPLAY_EVAL_BLOCK},
},
{
"DW_CFA_offset_extended_sf", // 0x11 DW_CFA_offset_extend_sf
2,
2,
{DW_EH_PE_uleb128, DW_EH_PE_sleb128},
{DWARF_DISPLAY_REGISTER, DWARF_DISPLAY_SIGNED_NUMBER},
},
{
"DW_CFA_def_cfa_sf", // 0x12 DW_CFA_def_cfa_sf
2,
2,
{DW_EH_PE_uleb128, DW_EH_PE_sleb128},
{DWARF_DISPLAY_REGISTER, DWARF_DISPLAY_SIGNED_NUMBER},
},
{
"DW_CFA_def_cfa_offset_sf", // 0x13 DW_CFA_def_cfa_offset_sf
2,
1,
{DW_EH_PE_sleb128},
{DWARF_DISPLAY_SIGNED_NUMBER},
},
{
"DW_CFA_val_offset", // 0x14 DW_CFA_val_offset
2,
2,
{DW_EH_PE_uleb128, DW_EH_PE_uleb128},
{DWARF_DISPLAY_REGISTER, DWARF_DISPLAY_NUMBER},
},
{
"DW_CFA_val_offset_sf", // 0x15 DW_CFA_val_offset_sf
2,
2,
{DW_EH_PE_uleb128, DW_EH_PE_sleb128},
{DWARF_DISPLAY_REGISTER, DWARF_DISPLAY_SIGNED_NUMBER},
},
{
"DW_CFA_val_expression", // 0x16 DW_CFA_val_expression
2,
2,
{DW_EH_PE_uleb128, DW_EH_PE_block},
{DWARF_DISPLAY_REGISTER, DWARF_DISPLAY_EVAL_BLOCK},
},
{nullptr, 0, 0, {}, {}}, // 0x17 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x18 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x19 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x1a illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x1b illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x1c DW_CFA_lo_user (Treat as illegal)
{nullptr, 0, 0, {}, {}}, // 0x1d illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x1e illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x1f illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x20 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x21 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x22 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x23 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x24 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x25 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x26 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x27 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x28 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x29 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x2a illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x2b illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x2c illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x2d DW_CFA_GNU_window_save (Treat as illegal)
{
"DW_CFA_GNU_args_size", // 0x2e DW_CFA_GNU_args_size
2,
1,
{DW_EH_PE_uleb128},
{DWARF_DISPLAY_NUMBER},
},
{
"DW_CFA_GNU_negative_offset_extended", // 0x2f DW_CFA_GNU_negative_offset_extended
2,
2,
{DW_EH_PE_uleb128, DW_EH_PE_uleb128},
{DWARF_DISPLAY_REGISTER, DWARF_DISPLAY_NUMBER},
},
{nullptr, 0, 0, {}, {}}, // 0x31 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x32 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x33 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x34 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x35 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x36 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x37 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x38 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x39 illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x3a illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x3b illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x3c illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x3d illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x3e illegal cfa
{nullptr, 0, 0, {}, {}}, // 0x3f DW_CFA_hi_user (Treat as illegal)
};
// Explicitly instantiate DwarfCfa.
template class DwarfCfa<uint32_t>;
template class DwarfCfa<uint64_t>;
} // namespace unwindstack