vendor/llvm/llvm-release_39-r276489

1 files changed, 56 insertions, 0 deletions

diff --git a/include/llvm/DebugInfo/CodeView/CVRecord.h b/include/llvm/DebugInfo/CodeView/CVRecord.h
new file mode 100644
index 000000000000..dba359fcbe82
--- /dev/null
+++ b/include/llvm/DebugInfo/CodeView/CVRecord.h
@@ -0,0 +1,56 @@
+//===- RecordIterator.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_RECORDITERATOR_H
+#define LLVM_DEBUGINFO_CODEVIEW_RECORDITERATOR_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/iterator_range.h"
+#include "llvm/DebugInfo/CodeView/RecordSerialization.h"
+#include "llvm/DebugInfo/CodeView/StreamInterface.h"
+#include "llvm/DebugInfo/CodeView/StreamReader.h"
+#include "llvm/Support/Endian.h"
+
+namespace llvm {
+namespace codeview {
+
+template <typename Kind> struct CVRecord {
+  uint32_t Length;
+  Kind Type;
+  ArrayRef<uint8_t> Data;
+  ArrayRef<uint8_t> RawData;
+};
+
+template <typename Kind> struct VarStreamArrayExtractor<CVRecord<Kind>> {
+  Error operator()(StreamRef Stream, uint32_t &Len,
+                   CVRecord<Kind> &Item) const {
+    const RecordPrefix *Prefix = nullptr;
+    StreamReader Reader(Stream);
+    uint32_t Offset = Reader.getOffset();
+
+    if (auto EC = Reader.readObject(Prefix))
+      return EC;
+    Item.Length = Prefix->RecordLen;
+    if (Item.Length < 2)
+      return make_error<CodeViewError>(cv_error_code::corrupt_record);
+    Item.Type = static_cast<Kind>(uint16_t(Prefix->RecordKind));
+
+    Reader.setOffset(Offset);
+    if (auto EC =
+            Reader.readBytes(Item.RawData, Item.Length + sizeof(uint16_t)))
+      return EC;
+    Item.Data = Item.RawData.slice(sizeof(RecordPrefix));
+    Len = Prefix->RecordLen + 2;
+    return Error::success();
+  }
+};
+}
+}
+
+#endif