vendor/llvm-project/llvmorg-11-init-20887-g2e10b7a39b9vendor/llvm-project/master

1 files changed, 18 insertions, 32 deletions

diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
index f660cc32b3f8d..305f1cbd2826a 100644
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
@@ -1,4 +1,4 @@
-//===-- DWARFFormValue.cpp --------------------------------------*- C++ -*-===//
+//===-- DWARFFormValue.cpp ------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -454,40 +454,26 @@ void DWARFFormValue::Dump(Stream &s) const {
 }
 
 const char *DWARFFormValue::AsCString() const {
-  SymbolFileDWARF &symbol_file = m_unit->GetSymbolFileDWARF();
+  DWARFContext &context = m_unit->GetSymbolFileDWARF().GetDWARFContext();
 
-  if (m_form == DW_FORM_string) {
+  if (m_form == DW_FORM_string)
     return m_value.value.cstr;
-  } else if (m_form == DW_FORM_strp) {
-    return symbol_file.GetDWARFContext().getOrLoadStrData().PeekCStr(
-        m_value.value.uval);
-  } else if (m_form == DW_FORM_GNU_str_index) {
-    uint32_t index_size = 4;
-    lldb::offset_t offset = m_value.value.uval * index_size;
-    dw_offset_t str_offset =
-        symbol_file.GetDWARFContext().getOrLoadStrOffsetsData().GetMaxU64(
-            &offset, index_size);
-    return symbol_file.GetDWARFContext().getOrLoadStrData().PeekCStr(
-        str_offset);
-  }
-
-  if (m_form == DW_FORM_strx || m_form == DW_FORM_strx1 ||
-      m_form == DW_FORM_strx2 || m_form == DW_FORM_strx3 ||
-      m_form == DW_FORM_strx4) {
-
-    // The same code as above.
-    uint32_t indexSize = 4;
-    lldb::offset_t offset =
-        m_unit->GetStrOffsetsBase() + m_value.value.uval * indexSize;
-    dw_offset_t strOffset =
-        symbol_file.GetDWARFContext().getOrLoadStrOffsetsData().GetMaxU64(
-            &offset, indexSize);
-    return symbol_file.GetDWARFContext().getOrLoadStrData().PeekCStr(strOffset);
+  if (m_form == DW_FORM_strp)
+    return context.getOrLoadStrData().PeekCStr(m_value.value.uval);
+
+  if (m_form == DW_FORM_GNU_str_index || m_form == DW_FORM_strx ||
+      m_form == DW_FORM_strx1 || m_form == DW_FORM_strx2 ||
+      m_form == DW_FORM_strx3 || m_form == DW_FORM_strx4) {
+
+    llvm::Optional<uint64_t> offset =
+        m_unit->GetStringOffsetSectionItem(m_value.value.uval);
+    if (!offset)
+      return nullptr;
+    return context.getOrLoadStrData().PeekCStr(*offset);
   }
 
   if (m_form == DW_FORM_line_strp)
-    return symbol_file.GetDWARFContext().getOrLoadLineStrData().PeekCStr(
-        m_value.value.uval);
+    return context.getOrLoadLineStrData().PeekCStr(m_value.value.uval);
 
   return nullptr;
 }
@@ -531,7 +517,7 @@ DWARFDIE DWARFFormValue::Reference() const {
 
   case DW_FORM_ref_addr: {
     DWARFUnit *ref_cu =
-        m_unit->GetSymbolFileDWARF().DebugInfo()->GetUnitContainingDIEOffset(
+        m_unit->GetSymbolFileDWARF().DebugInfo().GetUnitContainingDIEOffset(
             DIERef::Section::DebugInfo, value);
     if (!ref_cu) {
       m_unit->GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
@@ -544,7 +530,7 @@ DWARFDIE DWARFFormValue::Reference() const {
 
   case DW_FORM_ref_sig8: {
     DWARFTypeUnit *tu =
-        m_unit->GetSymbolFileDWARF().DebugInfo()->GetTypeUnitForHash(value);
+        m_unit->GetSymbolFileDWARF().DebugInfo().GetTypeUnitForHash(value);
     if (!tu)
       return {};
     return tu->GetDIE(tu->GetTypeOffset());