[ObjectYAML] First bit of support for encoding DWARF in MachO

This patch adds the starting support for encoding data from the MachO __DWARF segment. The first section supported is the __debug_str section because it is the simplest.

llvm-svn: 288774

1 files changed, 16 insertions, 1 deletions

diff --git a/llvm/lib/ObjectYAML/MachOYAML.cpp b/llvm/lib/ObjectYAML/MachOYAML.cpp
index 984ca0b9d01..d3f8ea47e59 100644
--- a/llvm/lib/ObjectYAML/MachOYAML.cpp
+++ b/llvm/lib/ObjectYAML/MachOYAML.cpp
@@ -23,7 +23,14 @@ namespace llvm {
 MachOYAML::LoadCommand::~LoadCommand() {}
 
 bool MachOYAML::LinkEditData::isEmpty() const {
-  return 0 == RebaseOpcodes.size() + BindOpcodes.size() + WeakBindOpcodes.size() + LazyBindOpcodes.size() + ExportTrie.Children.size() + NameList.size() + StringTable.size();
+  return 0 ==
+         RebaseOpcodes.size() + BindOpcodes.size() + WeakBindOpcodes.size() +
+             LazyBindOpcodes.size() + ExportTrie.Children.size() +
+             NameList.size() + StringTable.size();
+}
+
+bool MachOYAML::DWARFData::isEmpty() const {
+  return 0 == DebugStrings.size();
 }
 
 namespace yaml {
@@ -102,6 +109,9 @@ void MappingTraits<MachOYAML::Object>::mapping(IO &IO,
   if(!Object.LinkEdit.isEmpty() || !IO.outputting())
     IO.mapOptional("LinkEditData", Object.LinkEdit);
 
+  if(!Object.DWARF.isEmpty() || !IO.outputting())
+    IO.mapOptional("DWARF", Object.DWARF);
+
   if (IO.getContext() == &Object)
     IO.setContext(nullptr);
 }
@@ -547,6 +557,11 @@ void MappingTraits<MachO::version_min_command>::mapping(
   IO.mapRequired("sdk", LoadCommand.sdk);
 }
 
+void MappingTraits<MachOYAML::DWARFData>::mapping(
+    IO &IO, MachOYAML::DWARFData &DWARF) {
+  IO.mapRequired("DebugStrings", DWARF.DebugStrings);
+}
+
 } // namespace llvm::yaml
 
 } // namespace llvm