From e38825f490b898644089d5cd9cb90cec681bded8 Mon Sep 17 00:00:00 2001
From: Krzysztof Parzyszek <kparzysz@codeaurora.org>
Date: Tue, 12 Feb 2013 16:20:28 +0000
Subject: [PATCH] Add support for the pubnames section to llvm-dwarfdump.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174976 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/DebugInfo/DIContext.h      |  1 +
 lib/DebugInfo/DWARFContext.cpp          | 20 ++++++++++++++++++++
 lib/DebugInfo/DWARFContext.h            |  3 +++
 tools/llvm-dwarfdump/llvm-dwarfdump.cpp |  1 +
 4 files changed, 25 insertions(+)

diff --git a/include/llvm/DebugInfo/DIContext.h b/include/llvm/DebugInfo/DIContext.h
index 679b490caf8..8fcd9e0b824 100644
--- a/include/llvm/DebugInfo/DIContext.h
+++ b/include/llvm/DebugInfo/DIContext.h
@@ -106,6 +106,7 @@ enum DIDumpType {
   DIDT_InfoDwo,
   DIDT_Line,
   DIDT_Ranges,
+  DIDT_Pubnames,
   DIDT_Str,
   DIDT_StrDwo,
   DIDT_StrOffsetsDwo
diff --git a/lib/DebugInfo/DWARFContext.cpp b/lib/DebugInfo/DWARFContext.cpp
index d061f4e1f8e..9e19310a99c 100644
--- a/lib/DebugInfo/DWARFContext.cpp
+++ b/lib/DebugInfo/DWARFContext.cpp
@@ -88,6 +88,24 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpType DumpType) {
       rangeList.dump(OS);
   }
 
+  if (DumpType == DIDT_All || DumpType == DIDT_Pubnames) {
+    OS << "\n.debug_pubnames contents:\n";
+    DataExtractor pubNames(getPubNamesSection(), isLittleEndian(), 0);
+    offset = 0;
+    OS << "Length:                " << pubNames.getU32(&offset) << "\n";
+    OS << "Version:               " << pubNames.getU16(&offset) << "\n";
+    OS << "Offset in .debug_info: " << pubNames.getU32(&offset) << "\n";
+    OS << "Size:                  " << pubNames.getU32(&offset) << "\n";
+    OS << "\n  Offset    Name\n";
+    while (offset < getPubNamesSection().size()) {
+      uint32_t n = pubNames.getU32(&offset);
+      if (n == 0)
+        break;
+      OS << format("%8x    ", n);
+      OS << pubNames.getCStr(&offset) << "\n";
+    }
+  }
+
   if (DumpType == DIDT_All || DumpType == DIDT_AbbrevDwo) {
     OS << "\n.debug_abbrev.dwo contents:\n";
     getDebugAbbrevDWO()->dump(OS);
@@ -494,6 +512,8 @@ DWARFContextInMemory::DWARFContextInMemory(object::ObjectFile *Obj) :
       RangeDWOSection = data;
       RangeSection = data;
     }
+    else if (name == "debug_pubnames")
+      PubNamesSection = data;
     else if (name == "debug_info.dwo")
       InfoDWOSection = data;
     else if (name == "debug_abbrev.dwo")
diff --git a/lib/DebugInfo/DWARFContext.h b/lib/DebugInfo/DWARFContext.h
index f12a05479be..37b272993f3 100644
--- a/lib/DebugInfo/DWARFContext.h
+++ b/lib/DebugInfo/DWARFContext.h
@@ -111,6 +111,7 @@ public:
   virtual StringRef getLineSection() = 0;
   virtual StringRef getStringSection() = 0;
   virtual StringRef getRangeSection() = 0;
+  virtual StringRef getPubNamesSection() = 0;
 
   // Sections for DWARF5 split dwarf proposal.
   virtual StringRef getInfoDWOSection() = 0;
@@ -149,6 +150,7 @@ class DWARFContextInMemory : public DWARFContext {
   StringRef LineSection;
   StringRef StringSection;
   StringRef RangeSection;
+  StringRef PubNamesSection;
 
   // Sections for DWARF5 split dwarf proposal.
   RelocAddrMap InfoDWORelocMap;
@@ -172,6 +174,7 @@ public:
   virtual StringRef getLineSection() { return LineSection; }
   virtual StringRef getStringSection() { return StringSection; }
   virtual StringRef getRangeSection() { return RangeSection; }
+  virtual StringRef getPubNamesSection() { return PubNamesSection; }
 
   // Sections for DWARF5 split dwarf proposal.
   virtual StringRef getInfoDWOSection() { return InfoDWOSection; }
diff --git a/tools/llvm-dwarfdump/llvm-dwarfdump.cpp b/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
index 290f3a66185..80948560ca9 100644
--- a/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
+++ b/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
@@ -65,6 +65,7 @@ DumpType("debug-dump", cl::init(DIDT_All),
         clEnumValN(DIDT_Line, "line", ".debug_line"),
         clEnumValN(DIDT_Frames, "frames", ".debug_frame"),
         clEnumValN(DIDT_Ranges, "ranges", ".debug_ranges"),
+        clEnumValN(DIDT_Pubnames, "pubnames", ".debug_pubnames"),
         clEnumValN(DIDT_Str, "str", ".debug_str"),
         clEnumValN(DIDT_StrDwo, "str.dwo", ".debug_str.dwo"),
         clEnumValN(DIDT_StrOffsetsDwo, "str_offsets.dwo", ".debug_str_offsets.dwo"),