vendor/llvm/llvm-trunk-r304222

1 files changed, 77 insertions, 0 deletions

diff --git a/include/llvm/DebugInfo/CodeView/DebugSubsectionRecord.h b/include/llvm/DebugInfo/CodeView/DebugSubsectionRecord.h
new file mode 100644
index 000000000000..b2e1131e5968
--- /dev/null
+++ b/include/llvm/DebugInfo/CodeView/DebugSubsectionRecord.h
@@ -0,0 +1,77 @@
+//===- DebugSubsection.h ------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGFRAGMENTRECORD_H
+#define LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGFRAGMENTRECORD_H
+
+#include "llvm/DebugInfo/CodeView/CodeView.h"
+#include "llvm/Support/BinaryStreamArray.h"
+#include "llvm/Support/BinaryStreamRef.h"
+#include "llvm/Support/BinaryStreamWriter.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/Error.h"
+
+namespace llvm {
+namespace codeview {
+
+class DebugSubsection;
+
+// Corresponds to the `CV_DebugSSubsectionHeader_t` structure.
+struct DebugSubsectionHeader {
+  support::ulittle32_t Kind;   // codeview::DebugSubsectionKind enum
+  support::ulittle32_t Length; // number of bytes occupied by this record.
+};
+
+class DebugSubsectionRecord {
+public:
+  DebugSubsectionRecord();
+  DebugSubsectionRecord(DebugSubsectionKind Kind, BinaryStreamRef Data);
+
+  static Error initialize(BinaryStreamRef Stream, DebugSubsectionRecord &Info);
+
+  uint32_t getRecordLength() const;
+  DebugSubsectionKind kind() const;
+  BinaryStreamRef getRecordData() const;
+
+private:
+  DebugSubsectionKind Kind;
+  BinaryStreamRef Data;
+};
+
+class DebugSubsectionRecordBuilder {
+public:
+  DebugSubsectionRecordBuilder(DebugSubsectionKind Kind, DebugSubsection &Frag);
+  uint32_t calculateSerializedLength();
+  Error commit(BinaryStreamWriter &Writer);
+
+private:
+  DebugSubsectionKind Kind;
+  DebugSubsection &Frag;
+};
+
+} // namespace codeview
+
+template <> struct VarStreamArrayExtractor<codeview::DebugSubsectionRecord> {
+  typedef void ContextType;
+
+  static Error extract(BinaryStreamRef Stream, uint32_t &Length,
+                       codeview::DebugSubsectionRecord &Info) {
+    if (auto EC = codeview::DebugSubsectionRecord::initialize(Stream, Info))
+      return EC;
+    Length = Info.getRecordLength();
+    return Error::success();
+  }
+};
+
+namespace codeview {
+typedef VarStreamArray<DebugSubsectionRecord> DebugSubsectionArray;
+}
+} // namespace llvm
+
+#endif // LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGFRAGMENTRECORD_H