1 files changed, 61 insertions, 0 deletions
diff --git a/contrib/llvm/lib/DebugInfo/CodeView/DebugFrameDataSubsection.cpp b/contrib/llvm/lib/DebugInfo/CodeView/DebugFrameDataSubsection.cpp
new file mode 100644
index 000000000000..be8c32d5b294
--- /dev/null
+++ b/contrib/llvm/lib/DebugInfo/CodeView/DebugFrameDataSubsection.cpp
@@ -0,0 +1,61 @@
+//===- DebugFrameDataSubsection.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 "llvm/DebugInfo/CodeView/DebugFrameDataSubsection.h"
+#include "llvm/DebugInfo/CodeView/CodeViewError.h"
+
+using namespace llvm;
+using namespace llvm::codeview;
+
+Error DebugFrameDataSubsectionRef::initialize(BinaryStreamReader Reader) {
+  if (Reader.bytesRemaining() % sizeof(FrameData) != 0) {
+    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();
+}
+
+Error DebugFrameDataSubsectionRef::initialize(BinaryStreamRef Section) {
+  BinaryStreamReader Reader(Section);
+  return initialize(Reader);
+}
+
+uint32_t DebugFrameDataSubsection::calculateSerializedSize() const {
+  uint32_t Size = sizeof(FrameData) * Frames.size();
+  if (IncludeRelocPtr)
+    Size += sizeof(uint32_t);
+  return Size;
+}
+
+Error DebugFrameDataSubsection::commit(BinaryStreamWriter &Writer) const {
+  if (IncludeRelocPtr) {
+    if (auto EC = Writer.writeInteger<uint32_t>(0))
+      return EC;
+  }
+
+  std::vector<FrameData> SortedFrames(Frames.begin(), Frames.end());
+  std::sort(SortedFrames.begin(), SortedFrames.end(),
+            [](const FrameData &LHS, const FrameData &RHS) {
+              return LHS.RvaStart < RHS.RvaStart;
+            });
+  if (auto EC = Writer.writeArray(makeArrayRef(SortedFrames)))
+    return EC;
+  return Error::success();
+}
+
+void DebugFrameDataSubsection::addFrameData(const FrameData &Frame) {
+  Frames.push_back(Frame);
+}