2fcf4cf13e
The backtrace offline code uses these error codes to diagnose errors. In addtion, I've had cases where seeing these errors would help diagnose failures. This also allows us to add a few features to indicate why an unwind terminated (such as max frames exceeded). Bug: 65682279 Test: Updated unit tests pass. Change-Id: If82b5092698e8a194016d670efff1320f9b44d50
723 lines
23 KiB
C++
723 lines
23 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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#include <inttypes.h>
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#include <stdint.h>
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#include <string>
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#include <type_traits>
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#include <vector>
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#include <android-base/stringprintf.h>
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#include <unwindstack/DwarfError.h>
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#include <unwindstack/DwarfLocation.h>
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#include <unwindstack/Log.h>
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#include "DwarfCfa.h"
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#include "DwarfEncoding.h"
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#include "DwarfOp.h"
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namespace unwindstack {
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template <typename AddressType>
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constexpr typename DwarfCfa<AddressType>::process_func DwarfCfa<AddressType>::kCallbackTable[64];
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template <typename AddressType>
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bool DwarfCfa<AddressType>::GetLocationInfo(uint64_t pc, uint64_t start_offset, uint64_t end_offset,
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dwarf_loc_regs_t* loc_regs) {
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if (cie_loc_regs_ != nullptr) {
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for (const auto& entry : *cie_loc_regs_) {
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(*loc_regs)[entry.first] = entry.second;
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}
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}
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last_error_.code = DWARF_ERROR_NONE;
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last_error_.address = 0;
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memory_->set_cur_offset(start_offset);
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uint64_t cfa_offset;
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cur_pc_ = fde_->pc_start;
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while ((cfa_offset = memory_->cur_offset()) < end_offset && cur_pc_ <= pc) {
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operands_.clear();
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// Read the cfa information.
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uint8_t cfa_value;
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if (!memory_->ReadBytes(&cfa_value, 1)) {
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last_error_.code = DWARF_ERROR_MEMORY_INVALID;
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last_error_.address = memory_->cur_offset();
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return false;
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}
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uint8_t cfa_low = cfa_value & 0x3f;
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// Check the 2 high bits.
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switch (cfa_value >> 6) {
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case 1:
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cur_pc_ += cfa_low * fde_->cie->code_alignment_factor;
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break;
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case 2: {
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uint64_t offset;
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if (!memory_->ReadULEB128(&offset)) {
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last_error_.code = DWARF_ERROR_MEMORY_INVALID;
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last_error_.address = memory_->cur_offset();
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return false;
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}
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SignedType signed_offset =
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static_cast<SignedType>(offset) * fde_->cie->data_alignment_factor;
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(*loc_regs)[cfa_low] = {.type = DWARF_LOCATION_OFFSET,
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.values = {static_cast<uint64_t>(signed_offset)}};
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break;
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}
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case 3: {
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if (cie_loc_regs_ == nullptr) {
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log(0, "restore while processing cie");
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last_error_.code = DWARF_ERROR_ILLEGAL_STATE;
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return false;
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}
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auto reg_entry = cie_loc_regs_->find(cfa_low);
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if (reg_entry == cie_loc_regs_->end()) {
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loc_regs->erase(cfa_low);
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} else {
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(*loc_regs)[cfa_low] = reg_entry->second;
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}
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break;
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}
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case 0: {
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const auto handle_func = DwarfCfa<AddressType>::kCallbackTable[cfa_low];
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if (handle_func == nullptr) {
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last_error_.code = DWARF_ERROR_ILLEGAL_VALUE;
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return false;
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}
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const auto cfa = &DwarfCfaInfo::kTable[cfa_low];
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for (size_t i = 0; i < cfa->num_operands; i++) {
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if (cfa->operands[i] == DW_EH_PE_block) {
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uint64_t block_length;
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if (!memory_->ReadULEB128(&block_length)) {
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last_error_.code = DWARF_ERROR_MEMORY_INVALID;
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last_error_.address = memory_->cur_offset();
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return false;
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}
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operands_.push_back(block_length);
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memory_->set_cur_offset(memory_->cur_offset() + block_length);
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continue;
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}
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uint64_t value;
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if (!memory_->ReadEncodedValue<AddressType>(cfa->operands[i], &value)) {
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last_error_.code = DWARF_ERROR_MEMORY_INVALID;
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last_error_.address = memory_->cur_offset();
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return false;
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}
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operands_.push_back(value);
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}
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if (!(this->*handle_func)(loc_regs)) {
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return false;
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}
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break;
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}
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}
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}
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return true;
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}
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template <typename AddressType>
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std::string DwarfCfa<AddressType>::GetOperandString(uint8_t operand, uint64_t value,
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uint64_t* cur_pc) {
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std::string string;
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switch (operand) {
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case DwarfCfaInfo::DWARF_DISPLAY_REGISTER:
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string = " register(" + std::to_string(value) + ")";
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break;
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case DwarfCfaInfo::DWARF_DISPLAY_SIGNED_NUMBER:
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string += " " + std::to_string(static_cast<SignedType>(value));
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break;
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case DwarfCfaInfo::DWARF_DISPLAY_ADVANCE_LOC:
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*cur_pc += value;
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// Fall through to log the value.
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case DwarfCfaInfo::DWARF_DISPLAY_NUMBER:
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string += " " + std::to_string(value);
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break;
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case DwarfCfaInfo::DWARF_DISPLAY_SET_LOC:
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*cur_pc = value;
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// Fall through to log the value.
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case DwarfCfaInfo::DWARF_DISPLAY_ADDRESS:
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if (std::is_same<AddressType, uint32_t>::value) {
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string += android::base::StringPrintf(" 0x%" PRIx32, static_cast<uint32_t>(value));
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} else {
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string += android::base::StringPrintf(" 0x%" PRIx64, static_cast<uint64_t>(value));
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}
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break;
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default:
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string = " unknown";
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}
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return string;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::LogOffsetRegisterString(uint32_t indent, uint64_t cfa_offset,
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uint8_t reg) {
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uint64_t offset;
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if (!memory_->ReadULEB128(&offset)) {
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return false;
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}
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uint64_t end_offset = memory_->cur_offset();
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memory_->set_cur_offset(cfa_offset);
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std::string raw_data = "Raw Data:";
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for (uint64_t i = cfa_offset; i < end_offset; i++) {
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uint8_t value;
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if (!memory_->ReadBytes(&value, 1)) {
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return false;
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}
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raw_data += android::base::StringPrintf(" 0x%02x", value);
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}
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log(indent, "DW_CFA_offset register(%d) %" PRId64, reg, offset);
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log(indent, "%s", raw_data.c_str());
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::LogInstruction(uint32_t indent, uint64_t cfa_offset, uint8_t op,
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uint64_t* cur_pc) {
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const auto* cfa = &DwarfCfaInfo::kTable[op];
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if (cfa->name == nullptr) {
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log(indent, "Illegal");
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log(indent, "Raw Data: 0x%02x", op);
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return true;
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}
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std::string log_string(cfa->name);
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std::vector<std::string> expression_lines;
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for (size_t i = 0; i < cfa->num_operands; i++) {
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if (cfa->operands[i] == DW_EH_PE_block) {
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// This is a Dwarf Expression.
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uint64_t end_offset;
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if (!memory_->ReadULEB128(&end_offset)) {
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return false;
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}
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log_string += " " + std::to_string(end_offset);
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end_offset += memory_->cur_offset();
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DwarfOp<AddressType> op(memory_, nullptr);
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op.GetLogInfo(memory_->cur_offset(), end_offset, &expression_lines);
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memory_->set_cur_offset(end_offset);
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} else {
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uint64_t value;
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if (!memory_->ReadEncodedValue<AddressType>(cfa->operands[i], &value)) {
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return false;
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}
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log_string += GetOperandString(cfa->display_operands[i], value, cur_pc);
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}
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}
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log(indent, "%s", log_string.c_str());
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// Get the raw bytes of the data.
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uint64_t end_offset = memory_->cur_offset();
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memory_->set_cur_offset(cfa_offset);
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std::string raw_data("Raw Data:");
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for (uint64_t i = 0; i < end_offset - cfa_offset; i++) {
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uint8_t value;
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if (!memory_->ReadBytes(&value, 1)) {
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return false;
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}
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// Only show 10 raw bytes per line.
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if ((i % 10) == 0 && i != 0) {
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log(indent, "%s", raw_data.c_str());
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raw_data.clear();
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}
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if (raw_data.empty()) {
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raw_data = "Raw Data:";
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}
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raw_data += android::base::StringPrintf(" 0x%02x", value);
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}
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if (!raw_data.empty()) {
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log(indent, "%s", raw_data.c_str());
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}
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// Log any of the expression data.
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for (const auto line : expression_lines) {
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log(indent + 1, "%s", line.c_str());
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}
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::Log(uint32_t indent, uint64_t pc, uint64_t load_bias,
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uint64_t start_offset, uint64_t end_offset) {
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memory_->set_cur_offset(start_offset);
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uint64_t cfa_offset;
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uint64_t cur_pc = fde_->pc_start;
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uint64_t old_pc = cur_pc;
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while ((cfa_offset = memory_->cur_offset()) < end_offset && cur_pc <= pc) {
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// Read the cfa information.
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uint8_t cfa_value;
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if (!memory_->ReadBytes(&cfa_value, 1)) {
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return false;
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}
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// Check the 2 high bits.
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uint8_t cfa_low = cfa_value & 0x3f;
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switch (cfa_value >> 6) {
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case 0:
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if (!LogInstruction(indent, cfa_offset, cfa_low, &cur_pc)) {
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return false;
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}
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break;
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case 1:
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log(indent, "DW_CFA_advance_loc %d", cfa_low);
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log(indent, "Raw Data: 0x%02x", cfa_value);
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cur_pc += cfa_low * fde_->cie->code_alignment_factor;
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break;
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case 2:
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if (!LogOffsetRegisterString(indent, cfa_offset, cfa_low)) {
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return false;
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}
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break;
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case 3:
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log(indent, "DW_CFA_restore register(%d)", cfa_low);
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log(indent, "Raw Data: 0x%02x", cfa_value);
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break;
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}
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if (cur_pc != old_pc) {
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log(indent, "");
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log(indent, "PC 0x%" PRIx64, cur_pc + load_bias);
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}
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old_pc = cur_pc;
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}
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return true;
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}
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// Static data.
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_nop(dwarf_loc_regs_t*) {
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_set_loc(dwarf_loc_regs_t*) {
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AddressType cur_pc = cur_pc_;
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AddressType new_pc = operands_[0];
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if (new_pc < cur_pc) {
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if (std::is_same<AddressType, uint32_t>::value) {
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log(0, "Warning: PC is moving backwards: old 0x%" PRIx32 " new 0x%" PRIx32, cur_pc, new_pc);
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} else {
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log(0, "Warning: PC is moving backwards: old 0x%" PRIx64 " new 0x%" PRIx64, cur_pc, new_pc);
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}
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}
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cur_pc_ = new_pc;
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_advance_loc(dwarf_loc_regs_t*) {
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cur_pc_ += operands_[0] * fde_->cie->code_alignment_factor;
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_offset(dwarf_loc_regs_t* loc_regs) {
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AddressType reg = operands_[0];
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(*loc_regs)[reg] = {.type = DWARF_LOCATION_OFFSET, .values = {operands_[1]}};
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_restore(dwarf_loc_regs_t* loc_regs) {
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AddressType reg = operands_[0];
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if (cie_loc_regs_ == nullptr) {
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log(0, "restore while processing cie");
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last_error_.code = DWARF_ERROR_ILLEGAL_STATE;
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return false;
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}
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auto reg_entry = cie_loc_regs_->find(reg);
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if (reg_entry == cie_loc_regs_->end()) {
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loc_regs->erase(reg);
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} else {
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(*loc_regs)[reg] = reg_entry->second;
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}
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_undefined(dwarf_loc_regs_t* loc_regs) {
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AddressType reg = operands_[0];
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(*loc_regs)[reg] = {.type = DWARF_LOCATION_UNDEFINED};
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_same_value(dwarf_loc_regs_t* loc_regs) {
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AddressType reg = operands_[0];
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loc_regs->erase(reg);
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_register(dwarf_loc_regs_t* loc_regs) {
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AddressType reg = operands_[0];
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AddressType reg_dst = operands_[1];
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(*loc_regs)[reg] = {.type = DWARF_LOCATION_REGISTER, .values = {reg_dst}};
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_remember_state(dwarf_loc_regs_t* loc_regs) {
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loc_reg_state_.push(*loc_regs);
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_restore_state(dwarf_loc_regs_t* loc_regs) {
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if (loc_reg_state_.size() == 0) {
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log(0, "Warning: Attempt to restore without remember.");
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return true;
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}
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*loc_regs = loc_reg_state_.top();
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loc_reg_state_.pop();
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_def_cfa(dwarf_loc_regs_t* loc_regs) {
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(*loc_regs)[CFA_REG] = {.type = DWARF_LOCATION_REGISTER, .values = {operands_[0], operands_[1]}};
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_def_cfa_register(dwarf_loc_regs_t* loc_regs) {
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auto cfa_location = loc_regs->find(CFA_REG);
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if (cfa_location == loc_regs->end() || cfa_location->second.type != DWARF_LOCATION_REGISTER) {
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log(0, "Attempt to set new register, but cfa is not already set to a register.");
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last_error_.code = DWARF_ERROR_ILLEGAL_STATE;
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return false;
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}
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cfa_location->second.values[0] = operands_[0];
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_def_cfa_offset(dwarf_loc_regs_t* loc_regs) {
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// Changing the offset if this is not a register is illegal.
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auto cfa_location = loc_regs->find(CFA_REG);
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if (cfa_location == loc_regs->end() || cfa_location->second.type != DWARF_LOCATION_REGISTER) {
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log(0, "Attempt to set offset, but cfa is not set to a register.");
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last_error_.code = DWARF_ERROR_ILLEGAL_STATE;
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return false;
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}
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cfa_location->second.values[1] = operands_[0];
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_def_cfa_expression(dwarf_loc_regs_t* loc_regs) {
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(*loc_regs)[CFA_REG] = {.type = DWARF_LOCATION_EXPRESSION,
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.values = {operands_[0], memory_->cur_offset()}};
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_expression(dwarf_loc_regs_t* loc_regs) {
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AddressType reg = operands_[0];
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(*loc_regs)[reg] = {.type = DWARF_LOCATION_EXPRESSION,
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.values = {operands_[1], memory_->cur_offset()}};
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_offset_extended_sf(dwarf_loc_regs_t* loc_regs) {
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AddressType reg = operands_[0];
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SignedType value = static_cast<SignedType>(operands_[1]) * fde_->cie->data_alignment_factor;
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(*loc_regs)[reg] = {.type = DWARF_LOCATION_OFFSET, .values = {static_cast<uint64_t>(value)}};
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_def_cfa_sf(dwarf_loc_regs_t* loc_regs) {
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SignedType offset = static_cast<SignedType>(operands_[1]) * fde_->cie->data_alignment_factor;
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(*loc_regs)[CFA_REG] = {.type = DWARF_LOCATION_REGISTER,
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.values = {operands_[0], static_cast<uint64_t>(offset)}};
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return true;
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}
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template <typename AddressType>
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bool DwarfCfa<AddressType>::cfa_def_cfa_offset_sf(dwarf_loc_regs_t* loc_regs) {
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// Changing the offset if this is not a register is illegal.
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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_.code = 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
|