1 files changed, 69 insertions, 0 deletions
diff --git a/third_party/llvm-project/DWARFDebugPubTable.cpp b/third_party/llvm-project/DWARFDebugPubTable.cpp
new file mode 100644
index 000000000..ab71b239c
--- /dev/null
+++ b/third_party/llvm-project/DWARFDebugPubTable.cpp
@@ -0,0 +1,69 @@
+//===- DWARFDebugPubTable.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/DWARF/DWARFDebugPubTable.h"
+#include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/BinaryFormat/Dwarf.h"
+#include "llvm/Support/DataExtractor.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/raw_ostream.h"
+#include <cstdint>
+
+using namespace llvm;
+using namespace dwarf;
+
+DWARFDebugPubTable::DWARFDebugPubTable(const DWARFObject &Obj,
+                                       const DWARFSection &Sec,
+                                       bool LittleEndian, bool GnuStyle)
+    : GnuStyle(GnuStyle) {
+  DWARFDataExtractor PubNames(Obj, Sec, LittleEndian, 0);
+  uint64_t Offset = 0;
+  while (PubNames.isValidOffset(Offset)) {
+    Sets.push_back({});
+    Set &SetData = Sets.back();
+
+    SetData.Length = PubNames.getU32(&Offset);
+    SetData.Version = PubNames.getU16(&Offset);
+    SetData.Offset = PubNames.getRelocatedValue(4, &Offset);
+    SetData.Size = PubNames.getU32(&Offset);
+
+    while (Offset < Sec.Data.size()) {
+      uint32_t DieRef = PubNames.getU32(&Offset);
+      if (DieRef == 0)
+        break;
+      uint8_t IndexEntryValue = GnuStyle ? PubNames.getU8(&Offset) : 0;
+      StringRef Name = PubNames.getCStrRef(&Offset);
+      SetData.Entries.push_back(
+          {DieRef, PubIndexEntryDescriptor(IndexEntryValue), Name});
+    }
+  }
+}
+
+void DWARFDebugPubTable::dump(raw_ostream &OS) const {
+  for (const Set &S : Sets) {
+    OS << "length = " << format("0x%08x", S.Length);
+    OS << " version = " << format("0x%04x", S.Version);
+    OS << " unit_offset = " << format("0x%08" PRIx64, S.Offset);
+    OS << " unit_size = " << format("0x%08x", S.Size) << '\n';
+    OS << (GnuStyle ? "Offset     Linkage  Kind     Name\n"
+                    : "Offset     Name\n");
+
+    for (const Entry &E : S.Entries) {
+      OS << format("0x%8.8" PRIx64 " ", E.SecOffset);
+      if (GnuStyle) {
+        StringRef EntryLinkage =
+            GDBIndexEntryLinkageString(E.Descriptor.Linkage);
+        StringRef EntryKind = dwarf::GDBIndexEntryKindString(E.Descriptor.Kind);
+        OS << format("%-8s", EntryLinkage.data()) << ' '
+           << format("%-8s", EntryKind.data()) << ' ';
+      }
+      OS << '\"' << E.Name << "\"\n";
+    }
+  }
+}