//===-- DWARFDebugAranges.cpp ---------------------------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// #include "DWARFDebugAranges.h" #include "DWARFDebugArangeSet.h" #include "DWARFUnit.h" #include "lldb/Utility/Log.h" #include "lldb/Utility/Timer.h" using namespace lldb; using namespace lldb_private; // Constructor DWARFDebugAranges::DWARFDebugAranges() : m_aranges() {} // CountArangeDescriptors class CountArangeDescriptors { public: CountArangeDescriptors(uint32_t &count_ref) : count(count_ref) { // printf("constructor CountArangeDescriptors()\n"); } void operator()(const DWARFDebugArangeSet &set) { count += set.NumDescriptors(); } uint32_t &count; }; // Extract llvm::Error DWARFDebugAranges::extract(const DWARFDataExtractor &debug_aranges_data) { lldb::offset_t offset = 0; DWARFDebugArangeSet set; Range range; while (debug_aranges_data.ValidOffset(offset)) { llvm::Error error = set.extract(debug_aranges_data, &offset); if (error) return error; const uint32_t num_descriptors = set.NumDescriptors(); if (num_descriptors > 0) { const dw_offset_t cu_offset = set.GetHeader().cu_offset; for (uint32_t i = 0; i < num_descriptors; ++i) { const DWARFDebugArangeSet::Descriptor &descriptor = set.GetDescriptorRef(i); m_aranges.Append(RangeToDIE::Entry(descriptor.address, descriptor.length, cu_offset)); } } set.Clear(); } return llvm::ErrorSuccess(); } void DWARFDebugAranges::Dump(Log *log) const { if (log == nullptr) return; const size_t num_entries = m_aranges.GetSize(); for (size_t i = 0; i < num_entries; ++i) { const RangeToDIE::Entry *entry = m_aranges.GetEntryAtIndex(i); if (entry) LLDB_LOGF(log, "0x%8.8x: [0x%" PRIx64 " - 0x%" PRIx64 ")", entry->data, entry->GetRangeBase(), entry->GetRangeEnd()); } } void DWARFDebugAranges::AppendRange(dw_offset_t offset, dw_addr_t low_pc, dw_addr_t high_pc) { if (high_pc > low_pc) m_aranges.Append(RangeToDIE::Entry(low_pc, high_pc - low_pc, offset)); } void DWARFDebugAranges::Sort(bool minimize) { static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); Timer scoped_timer(func_cat, "%s this = %p", LLVM_PRETTY_FUNCTION, static_cast(this)); m_aranges.Sort(); m_aranges.CombineConsecutiveEntriesWithEqualData(); } // FindAddress dw_offset_t DWARFDebugAranges::FindAddress(dw_addr_t address) const { const RangeToDIE::Entry *entry = m_aranges.FindEntryThatContains(address); if (entry) return entry->data; return DW_INVALID_OFFSET; }