1 files changed, 43 insertions, 0 deletions
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFContext.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFContext.cpp
new file mode 100644
index 00000000000..d8a44ccacb9
--- /dev/null
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFContext.cpp
@@ -0,0 +1,43 @@
+//===-- DWARFContext.cpp ----------------------------------------*- C++ -*-===//
+//
+// 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 "DWARFContext.h"
+
+#include "lldb/Core/Section.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+static const DWARFDataExtractor *
+LoadOrGetSection(Module &module, SectionType section_type,
+                 llvm::Optional<DWARFDataExtractor> &extractor) {
+  if (extractor.hasValue())
+    return extractor->GetByteSize() > 0 ? extractor.getPointer() : nullptr;
+
+  // Initialize to an empty extractor so that we always take the fast path going
+  // forward.
+  extractor.emplace();
+
+  const SectionList *section_list = module.GetSectionList();
+  if (!section_list)
+    return nullptr;
+
+  auto section_sp = section_list->FindSectionByType(section_type, true);
+  if (!section_sp)
+    return nullptr;
+
+  section_sp->GetSectionData(*extractor);
+  return extractor.getPointer();
+}
+
+DWARFContext::DWARFContext(Module &module) : m_module(module) {}
+
+const DWARFDataExtractor *DWARFContext::getOrLoadArangesData() {
+  return LoadOrGetSection(m_module, eSectionTypeDWARFDebugAranges,
+                          m_data_debug_aranges);
+}