[Object][ELF] Support dumping hash-tables from files with no section table.

This time without breaking the bots.

llvm-svn: 241869

4 files changed, 22 insertions, 2 deletions

diff --git a/llvm/tools/llvm-readobj/ELFDumper.cpp b/llvm/tools/llvm-readobj/ELFDumper.cpp
index 967e8aa55c9..1cdf5529c08 100644
--- a/llvm/tools/llvm-readobj/ELFDumper.cpp
+++ b/llvm/tools/llvm-readobj/ELFDumper.cpp
@@ -56,6 +56,7 @@ public:
   void printDynamicTable() override;
   void printNeededLibraries() override;
   void printProgramHeaders() override;
+  void printHashTable() override;
 
   void printAttributes() override;
   void printMipsPLTGOT() override;
@@ -1119,6 +1120,18 @@ void ELFDumper<ELFT>::printProgramHeaders() {
   }
 }
 
+template <typename ELFT>
+void ELFDumper<ELFT>::printHashTable() {
+  DictScope D(W, "HashTable");
+  auto HT = Obj->getHashTable();
+  if (!HT)
+    return;
+  W.printNumber("Num Buckets", HT->nbucket);
+  W.printNumber("Num Chains", HT->nchain);
+  W.printList("Buckets", HT->buckets());
+  W.printList("Chains", HT->chains());
+}
+
 template <class ELFT>
 void ELFDumper<ELFT>::printAttributes() {
   W.startLine() << "Attributes not implemented.\n";
diff --git a/llvm/tools/llvm-readobj/ObjDumper.h b/llvm/tools/llvm-readobj/ObjDumper.h
index 27e15b256cc..5ecf0ec3d6f 100644
--- a/llvm/tools/llvm-readobj/ObjDumper.h
+++ b/llvm/tools/llvm-readobj/ObjDumper.h
@@ -37,6 +37,7 @@ public:
   virtual void printDynamicTable() { }
   virtual void printNeededLibraries() { }
   virtual void printProgramHeaders() { }
+  virtual void printHashTable() { }
 
   // Only implemented for ARM ELF at this time.
   virtual void printAttributes() { }
diff --git a/llvm/tools/llvm-readobj/StreamWriter.h b/llvm/tools/llvm-readobj/StreamWriter.h
index 245588ba060..f3cc57ef940 100644
--- a/llvm/tools/llvm-readobj/StreamWriter.h
+++ b/llvm/tools/llvm-readobj/StreamWriter.h
@@ -181,8 +181,8 @@ public:
     startLine() << Label << ": " << (Value ? "Yes" : "No") << '\n';
   }
 
-  template <typename T_>
-  void printList(StringRef Label, const SmallVectorImpl<T_> &List) {
+  template <typename T>
+  void printList(StringRef Label, const T &List) {
     startLine() << Label << ": [";
     bool Comma = false;
     for (const auto &Item : List) {
diff --git a/llvm/tools/llvm-readobj/llvm-readobj.cpp b/llvm/tools/llvm-readobj/llvm-readobj.cpp
index 990299bc2ce..12afacb0a85 100644
--- a/llvm/tools/llvm-readobj/llvm-readobj.cpp
+++ b/llvm/tools/llvm-readobj/llvm-readobj.cpp
@@ -127,6 +127,10 @@ namespace opts {
   cl::opt<bool> ProgramHeaders("program-headers",
     cl::desc("Display ELF program headers"));
 
+  // -hash-table
+  cl::opt<bool> HashTable("hash-table",
+    cl::desc("Display ELF hash table"));
+
   // -expand-relocs
   cl::opt<bool> ExpandRelocs("expand-relocs",
     cl::desc("Expand each shown relocation to multiple lines"));
@@ -300,6 +304,8 @@ static void dumpObject(const ObjectFile *Obj) {
     Dumper->printNeededLibraries();
   if (opts::ProgramHeaders)
     Dumper->printProgramHeaders();
+  if (opts::HashTable)
+    Dumper->printHashTable();
   if (Obj->getArch() == llvm::Triple::arm && Obj->isELF())
     if (opts::ARMAttributes)
       Dumper->printAttributes();