aea0985814
Most of these are Dump functions that are never called, but there is one instance of entire unused classes (DWARFDebugMacinfo and DWARFDebugMacinfoEntry) which are also unreferenced in the codebase). Differential Revision: https://reviews.llvm.org/D59276 llvm-svn: 356490
133 lines
4.2 KiB
C++
133 lines
4.2 KiB
C++
//===-- DWARFDebugAranges.cpp -----------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "DWARFDebugAranges.h"
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#include <assert.h>
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#include <stdio.h>
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#include <algorithm>
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#include "lldb/Utility/Log.h"
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#include "lldb/Utility/Stream.h"
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#include "lldb/Utility/Timer.h"
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#include "DWARFUnit.h"
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#include "DWARFDebugInfo.h"
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#include "SymbolFileDWARF.h"
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using namespace lldb;
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using namespace lldb_private;
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//----------------------------------------------------------------------
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// Constructor
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//----------------------------------------------------------------------
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DWARFDebugAranges::DWARFDebugAranges() : m_aranges() {}
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//----------------------------------------------------------------------
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// CountArangeDescriptors
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//----------------------------------------------------------------------
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class CountArangeDescriptors {
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public:
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CountArangeDescriptors(uint32_t &count_ref) : count(count_ref) {
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// printf("constructor CountArangeDescriptors()\n");
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}
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void operator()(const DWARFDebugArangeSet &set) {
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count += set.NumDescriptors();
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}
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uint32_t &count;
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};
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//----------------------------------------------------------------------
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// Extract
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//----------------------------------------------------------------------
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llvm::Error
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DWARFDebugAranges::extract(const DWARFDataExtractor &debug_aranges_data) {
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assert(debug_aranges_data.ValidOffset(0));
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lldb::offset_t offset = 0;
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DWARFDebugArangeSet set;
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Range range;
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while (debug_aranges_data.ValidOffset(offset)) {
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llvm::Error error = set.extract(debug_aranges_data, &offset);
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if (!error)
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return error;
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const uint32_t num_descriptors = set.NumDescriptors();
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if (num_descriptors > 0) {
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const dw_offset_t cu_offset = set.GetCompileUnitDIEOffset();
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for (uint32_t i = 0; i < num_descriptors; ++i) {
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const DWARFDebugArangeSet::Descriptor &descriptor =
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set.GetDescriptorRef(i);
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m_aranges.Append(RangeToDIE::Entry(descriptor.address,
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descriptor.length, cu_offset));
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}
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}
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set.Clear();
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}
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return llvm::ErrorSuccess();
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}
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//----------------------------------------------------------------------
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// Generate
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//----------------------------------------------------------------------
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bool DWARFDebugAranges::Generate(SymbolFileDWARF *dwarf2Data) {
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Clear();
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DWARFDebugInfo *debug_info = dwarf2Data->DebugInfo();
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if (debug_info) {
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uint32_t cu_idx = 0;
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const uint32_t num_compile_units = dwarf2Data->GetNumCompileUnits();
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for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) {
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DWARFUnit *cu = debug_info->GetCompileUnitAtIndex(cu_idx);
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if (cu)
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cu->BuildAddressRangeTable(dwarf2Data, this);
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}
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}
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return !IsEmpty();
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}
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void DWARFDebugAranges::Dump(Log *log) const {
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if (log == NULL)
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return;
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const size_t num_entries = m_aranges.GetSize();
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for (size_t i = 0; i < num_entries; ++i) {
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const RangeToDIE::Entry *entry = m_aranges.GetEntryAtIndex(i);
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if (entry)
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log->Printf("0x%8.8x: [0x%" PRIx64 " - 0x%" PRIx64 ")", entry->data,
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entry->GetRangeBase(), entry->GetRangeEnd());
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}
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}
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void DWARFDebugAranges::AppendRange(dw_offset_t offset, dw_addr_t low_pc,
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dw_addr_t high_pc) {
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if (high_pc > low_pc)
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m_aranges.Append(RangeToDIE::Entry(low_pc, high_pc - low_pc, offset));
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}
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void DWARFDebugAranges::Sort(bool minimize) {
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static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
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Timer scoped_timer(func_cat, "%s this = %p", LLVM_PRETTY_FUNCTION,
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static_cast<void *>(this));
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m_aranges.Sort();
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m_aranges.CombineConsecutiveEntriesWithEqualData();
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}
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//----------------------------------------------------------------------
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// FindAddress
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//----------------------------------------------------------------------
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dw_offset_t DWARFDebugAranges::FindAddress(dw_addr_t address) const {
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const RangeToDIE::Entry *entry = m_aranges.FindEntryThatContains(address);
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if (entry)
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return entry->data;
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return DW_INVALID_OFFSET;
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}
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