1 files changed, 87 insertions, 0 deletions
diff --git a/contrib/llvm/include/llvm/DebugInfo/CodeView/ModuleSubstream.h b/contrib/llvm/include/llvm/DebugInfo/CodeView/ModuleSubstream.h
new file mode 100644
index 0000000..6affac8
--- /dev/null
+++ b/contrib/llvm/include/llvm/DebugInfo/CodeView/ModuleSubstream.h
@@ -0,0 +1,87 @@
+//===- ModuleSubstream.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_MODULESUBSTREAM_H
+#define LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAM_H
+
+#include "llvm/DebugInfo/CodeView/CodeView.h"
+#include "llvm/DebugInfo/CodeView/StreamArray.h"
+#include "llvm/DebugInfo/CodeView/StreamRef.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/Error.h"
+
+namespace llvm {
+namespace codeview {
+
+// Corresponds to the `CV_DebugSSubsectionHeader_t` structure.
+struct ModuleSubsectionHeader {
+  support::ulittle32_t Kind;   // codeview::ModuleSubstreamKind enum
+  support::ulittle32_t Length; // number of bytes occupied by this record.
+};
+
+// Corresponds to the `CV_DebugSLinesHeader_t` structure.
+struct LineSubstreamHeader {
+  support::ulittle32_t RelocOffset;  // Code offset of line contribution.
+  support::ulittle16_t RelocSegment; // Code segment of line contribution.
+  support::ulittle16_t Flags;        // See LineFlags enumeration.
+  support::ulittle32_t CodeSize;     // Code size of this line contribution.
+};
+
+// Corresponds to the `CV_DebugSLinesFileBlockHeader_t` structure.
+struct LineFileBlockHeader {
+  support::ulittle32_t NameIndex; // Index in DBI name buffer of filename.
+  support::ulittle32_t NumLines;  // Number of lines
+  support::ulittle32_t BlockSize; // Code size of block, in bytes.
+  // The following two variable length arrays appear immediately after the
+  // header.  The structure definitions follow.
+  // LineNumberEntry   Lines[NumLines];
+  // ColumnNumberEntry Columns[NumLines];
+};
+
+// Corresponds to `CV_Line_t` structure
+struct LineNumberEntry {
+  support::ulittle32_t Offset; // Offset to start of code bytes for line number
+  support::ulittle32_t Flags;  // Start:24, End:7, IsStatement:1
+};
+
+// Corresponds to `CV_Column_t` structure
+struct ColumnNumberEntry {
+  support::ulittle16_t StartColumn;
+  support::ulittle16_t EndColumn;
+};
+
+class ModuleSubstream {
+public:
+  ModuleSubstream();
+  ModuleSubstream(ModuleSubstreamKind Kind, StreamRef Data);
+  static Error initialize(StreamRef Stream, ModuleSubstream &Info);
+  uint32_t getRecordLength() const;
+  ModuleSubstreamKind getSubstreamKind() const;
+  StreamRef getRecordData() const;
+
+private:
+  ModuleSubstreamKind Kind;
+  StreamRef Data;
+};
+
+template <> struct VarStreamArrayExtractor<ModuleSubstream> {
+  Error operator()(StreamRef Stream, uint32_t &Length,
+                   ModuleSubstream &Info) const {
+    if (auto EC = ModuleSubstream::initialize(Stream, Info))
+      return EC;
+    Length = Info.getRecordLength();
+    return Error::success();
+  }
+};
+
+typedef VarStreamArray<ModuleSubstream> ModuleSubstreamArray;
+}
+}
+
+#endif // LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAM_H