1 files changed, 61 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/DebugInfo/CodeView/Formatters.cpp b/contrib/llvm-project/llvm/lib/DebugInfo/CodeView/Formatters.cpp
new file mode 100644
index 000000000000..8c21764600b6
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/DebugInfo/CodeView/Formatters.cpp
@@ -0,0 +1,61 @@
+//===- Formatters.cpp -----------------------------------------------------===//
+//
+// 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/Formatters.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/DebugInfo/CodeView/GUID.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/raw_ostream.h"
+#include <cassert>
+
+using namespace llvm;
+using namespace llvm::codeview;
+using namespace llvm::codeview::detail;
+
+GuidAdapter::GuidAdapter(StringRef Guid)
+    : FormatAdapter(ArrayRef(Guid.bytes_begin(), Guid.bytes_end())) {}
+
+GuidAdapter::GuidAdapter(ArrayRef<uint8_t> Guid)
+    : FormatAdapter(std::move(Guid)) {}
+
+// From https://docs.microsoft.com/en-us/windows/win32/msi/guid documentation:
+// The GUID data type is a text string representing a Class identifier (ID).
+// All GUIDs must be authored in uppercase.
+// The valid format for a GUID is {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX} where
+// X is a hex digit (0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F).
+//
+// The individual string components must be padded to comply with the specific
+// lengths of {8-4-4-4-12} characters.
+// The llvm-yaml2obj tool checks that a GUID follow that format:
+// - the total length to be 38 (including the curly braces.
+// - there is a dash at the positions: 8, 13, 18 and 23.
+void GuidAdapter::format(raw_ostream &Stream, StringRef Style) {
+  assert(Item.size() == 16 && "Expected 16-byte GUID");
+  struct MSGuid {
+    support::ulittle32_t Data1;
+    support::ulittle16_t Data2;
+    support::ulittle16_t Data3;
+    support::ubig64_t Data4;
+  };
+  const MSGuid *G = reinterpret_cast<const MSGuid *>(Item.data());
+  Stream
+      << '{' << format_hex_no_prefix(G->Data1, 8, /*Upper=*/true)
+      << '-' << format_hex_no_prefix(G->Data2, 4, /*Upper=*/true)
+      << '-' << format_hex_no_prefix(G->Data3, 4, /*Upper=*/true)
+      << '-' << format_hex_no_prefix(G->Data4 >> 48, 4, /*Upper=*/true) << '-'
+      << format_hex_no_prefix(G->Data4 & ((1ULL << 48) - 1), 12, /*Upper=*/true)
+      << '}';
+}
+
+raw_ostream &llvm::codeview::operator<<(raw_ostream &OS, const GUID &Guid) {
+  codeview::detail::GuidAdapter A(Guid.Guid);
+  A.format(OS, "");
+  return OS;
+}