Index: include/llvm/Support/DataExtractor.h
===================================================================
--- include/llvm/Support/DataExtractor.h
+++ include/llvm/Support/DataExtractor.h
@@ -348,6 +348,17 @@
   bool isValidOffsetForDataOfSize(uint32_t offset, uint32_t length) const {
     return offset + length >= offset && isValidOffset(offset + length - 1);
   }
+
+  /// Test the availability of enough bytes of data for a pointer from
+  /// \a offset. The size of a pointer is \a getAddressSize().
+  ///
+  /// @return
+  ///     \b true if \a offset is a valid offset and there are enough
+  ///     bytes for a pointer available at that offset, \b false
+  ///     otherwise.
+  bool isValidOffsetForAddress(uint32_t offset) const {
+    return isValidOffsetForDataOfSize(offset, AddressSize);
+  }
 };
 
 } // namespace llvm
Index: test/tools/llvm-symbolizer/ppc64.test
===================================================================
--- /dev/null
+++ test/tools/llvm-symbolizer/ppc64.test
@@ -0,0 +1,11 @@
+// ppc64 was compiled from this source on a big-endian 64-bit PowerPC box
+// with just "clang -nostdlib":
+int foo() { return 0; }
+int bar() { return foo(); }
+int _start() { return bar(); }
+
+RUN: ( echo 0x1000014c ; echo 0x1000018c ; echo 0x100001cc ) | llvm-symbolizer -obj=%p/Inputs/ppc64 | FileCheck %s
+
+CHECK: foo
+CHECK: bar
+CHECK: _start
Index: tools/llvm-symbolizer/LLVMSymbolize.h
===================================================================
--- tools/llvm-symbolizer/LLVMSymbolize.h
+++ tools/llvm-symbolizer/LLVMSymbolize.h
@@ -17,6 +17,7 @@
 #include "llvm/DebugInfo/DIContext.h"
 #include "llvm/Object/MachOUniversal.h"
 #include "llvm/Object/ObjectFile.h"
+#include "llvm/Support/DataExtractor.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include <map>
 #include <memory>
@@ -115,7 +116,11 @@
   bool getNameFromSymbolTable(SymbolRef::Type Type, uint64_t Address,
                               std::string &Name, uint64_t &Addr,
                               uint64_t &Size) const;
-  void addSymbol(const SymbolRef &Symbol);
+  // For big-endian PowerPC64 ELF, OpdAddress is the address of the .opd
+  // (function descriptor) section and OpdExtractor refers to its contents.
+  void addSymbol(const SymbolRef &Symbol,
+                 DataExtractor *OpdExtractor = nullptr,
+                 uint64_t OpdAddress = 0);
   ObjectFile *Module;
   std::unique_ptr<DIContext> DebugInfoContext;
 
Index: tools/llvm-symbolizer/LLVMSymbolize.cpp
===================================================================
--- tools/llvm-symbolizer/LLVMSymbolize.cpp
+++ tools/llvm-symbolizer/LLVMSymbolize.cpp
@@ -45,8 +45,26 @@
 
 ModuleInfo::ModuleInfo(ObjectFile *Obj, DIContext *DICtx)
     : Module(Obj), DebugInfoContext(DICtx) {
+  std::unique_ptr<DataExtractor> OpdExtractor;
+  uint64_t OpdAddress = 0;
+  // Find the .opd (function descriptor) section if any, for big-endian
+  // PowerPC64 ELF.
+  if (Module->getArch() == Triple::ppc64) {
+    for (section_iterator Section : Module->sections()) {
+      StringRef Name;
+      if (!error(Section->getName(Name)) && Name == ".opd") {
+        StringRef Data;
+        if (!error(Section->getContents(Data))) {
+          OpdExtractor.reset(new DataExtractor(Data, Module->isLittleEndian(),
+                                               Module->getBytesInAddress()));
+          OpdAddress = Section->getAddress();
+        }
+        break;
+      }
+    }
+  }
   for (const SymbolRef &Symbol : Module->symbols()) {
-    addSymbol(Symbol);
+    addSymbol(Symbol, OpdExtractor.get(), OpdAddress);
   }
   bool NoSymbolTable = (Module->symbol_begin() == Module->symbol_end());
   if (NoSymbolTable && Module->isELF()) {
@@ -54,12 +72,13 @@
     std::pair<symbol_iterator, symbol_iterator> IDyn =
         getELFDynamicSymbolIterators(Module);
     for (symbol_iterator si = IDyn.first, se = IDyn.second; si != se; ++si) {
-      addSymbol(*si);
+      addSymbol(*si, OpdExtractor.get(), OpdAddress);
     }
   }
 }
 
-void ModuleInfo::addSymbol(const SymbolRef &Symbol) {
+void ModuleInfo::addSymbol(const SymbolRef &Symbol, DataExtractor *OpdExtractor,
+                           uint64_t OpdAddress) {
   SymbolRef::Type SymbolType;
   if (error(Symbol.getType(SymbolType)))
     return;
@@ -69,6 +88,18 @@
   if (error(Symbol.getAddress(SymbolAddress)) ||
       SymbolAddress == UnknownAddressOrSize)
     return;
+  if (OpdExtractor) {
+    // For big-endian PowerPC64 ELF, symbols in the .opd section refer to
+    // function descriptors. The first word of the descriptor is a pointer to
+    // the function's code.
+    // For the purposes of symbolization, pretend the symbol's address is that
+    // of the function's code, not the descriptor.
+    uint64_t OpdOffset = SymbolAddress - OpdAddress;
+    uint32_t OpdOffset32 = OpdOffset;
+    if (OpdOffset == OpdOffset32 && 
+        OpdExtractor->isValidOffsetForAddress(OpdOffset32))
+      SymbolAddress = OpdExtractor->getAddress(&OpdOffset32);
+  }
   uint64_t SymbolSize;
   // Getting symbol size is linear for Mach-O files, so assume that symbol
   // occupies the memory range up to the following symbol.