[CodeView] Add more DebugSubsection implementations.

This adds implementations for Symbols and FrameData, and renames
the existing codeview::StringTable class to conform to the
DebugSectionStringTable convention.

llvm-svn: 304222

1 files changed, 44 insertions, 0 deletions

diff --git a/llvm/lib/DebugInfo/CodeView/DebugFrameDataSubsection.cpp b/llvm/lib/DebugInfo/CodeView/DebugFrameDataSubsection.cpp
new file mode 100644
index 0000000..fd558aa
--- /dev/null
+++ b/llvm/lib/DebugInfo/CodeView/DebugFrameDataSubsection.cpp
@@ -0,0 +1,44 @@
+//===- DebugFrameDataSubsection.cpp -----------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/CodeView/DebugFrameDataSubsection.h"
+#include "llvm/DebugInfo/CodeView/CodeViewError.h"
+
+using namespace llvm;
+using namespace llvm::codeview;
+
+Error DebugFrameDataSubsectionRef::initialize(BinaryStreamReader Reader) {
+  if (auto EC = Reader.readObject(RelocPtr))
+    return EC;
+  if (Reader.bytesRemaining() % sizeof(FrameData) != 0)
+    return make_error<CodeViewError>(cv_error_code::corrupt_record,
+                                     "Invalid frame data record format!");
+
+  uint32_t Count = Reader.bytesRemaining() / sizeof(FrameData);
+  if (auto EC = Reader.readArray(Frames, Count))
+    return EC;
+  return Error::success();
+}
+
+uint32_t DebugFrameDataSubsection::calculateSerializedSize() const {
+  return 4 + sizeof(FrameData) * Frames.size();
+}
+
+Error DebugFrameDataSubsection::commit(BinaryStreamWriter &Writer) const {
+  if (auto EC = Writer.writeInteger<uint32_t>(0))
+    return EC;
+
+  if (auto EC = Writer.writeArray(makeArrayRef(Frames)))
+    return EC;
+  return Error::success();
+}
+
+void DebugFrameDataSubsection::addFrameData(const FrameData &Frame) {
+  Frames.push_back(Frame);
+}