[llvm-readobj] Dump MachO Dysymtab command.

dcci · dcci · commit 35eebe13fc81 · 2015-08-31T19:32:31.000Z
Example output: File: <stdin> Format: Mach-O 64-bit x86-64 Arch: x86_64 AddressSize: 64bit Dysymtab { ilocalsym: 0 nlocalsym: 6 iextdefsym: 6 nextdefsym: 2 iundefsym: 8 nundefsym: 0 tocoff: 0 ntoc: 0 modtaboff: 0 nmodtab: 0 extrefsymoff: 0 nextrefsyms: 0 indirectsymoff: 0 nindirectsyms: 0 extreloff: 0 nextrel: 0 locreloff: 0 nlocrel: 0 } Differential Revision: http://reviews.llvm.org/D12496 llvm-svn: 246474
diff --git a/llvm/tools/llvm-readobj/MachODumper.cpp b/llvm/tools/llvm-readobj/MachODumper.cpp
@@ -43,6 +43,7 @@ class MachODumper : public ObjDumper {
   // MachO-specific.
   void printMachODataInCode() override;
   void printMachOVersionMin() override;
+  void printMachODysymtab() override;
 
 private:
   template<class MachHeader>
@@ -663,3 +664,30 @@ void MachODumper::printMachOVersionMin() {
     }
   }
 }
+
+void MachODumper::printMachODysymtab() {
+  for (const auto &Load : Obj->load_commands()) {
+    if (Load.C.cmd == MachO::LC_DYSYMTAB) {
+      MachO::dysymtab_command DLC = Obj->getDysymtabLoadCommand();
+      DictScope Group(W, "Dysymtab");
+      W.printNumber("ilocalsym", DLC.ilocalsym);
+      W.printNumber("nlocalsym", DLC.nlocalsym);
+      W.printNumber("iextdefsym", DLC.iextdefsym);
+      W.printNumber("nextdefsym", DLC.nextdefsym);
+      W.printNumber("iundefsym", DLC.iundefsym);
+      W.printNumber("nundefsym", DLC.nundefsym);
+      W.printNumber("tocoff", DLC.tocoff);
+      W.printNumber("ntoc", DLC.ntoc);
+      W.printNumber("modtaboff", DLC.modtaboff);
+      W.printNumber("nmodtab", DLC.nmodtab);
+      W.printNumber("extrefsymoff", DLC.extrefsymoff);
+      W.printNumber("nextrefsyms", DLC.nextrefsyms);
+      W.printNumber("indirectsymoff", DLC.indirectsymoff);
+      W.printNumber("nindirectsyms", DLC.nindirectsyms);
+      W.printNumber("extreloff", DLC.extreloff);
+      W.printNumber("nextrel", DLC.nextrel);
+      W.printNumber("locreloff", DLC.locreloff);
+      W.printNumber("nlocrel", DLC.nlocrel);
+    }
+  }
+}
diff --git a/llvm/tools/llvm-readobj/ObjDumper.h b/llvm/tools/llvm-readobj/ObjDumper.h
@@ -58,6 +58,7 @@ class ObjDumper {
   // Only implemented for MachO.
   virtual void printMachODataInCode() { }
   virtual void printMachOVersionMin() { }
+  virtual void printMachODysymtab() { }
 
   virtual void printStackMap() const = 0;
 
diff --git a/llvm/tools/llvm-readobj/llvm-readobj.cpp b/llvm/tools/llvm-readobj/llvm-readobj.cpp
@@ -191,6 +191,12 @@ namespace opts {
   cl::opt<bool>
   MachOVersionMin("macho-version-min",
                   cl::desc("Display MachO version min command"));
+
+  // -macho-dysymtab
+  cl::opt<bool>
+  MachODysymtab("macho-dysymtab",
+                  cl::desc("Display MachO Dysymtab command"));
+
   // -stackmap
   cl::opt<bool>
   PrintStackMap("stackmap",
@@ -327,6 +333,8 @@ static void dumpObject(const ObjectFile *Obj) {
       Dumper->printMachODataInCode();
     if (opts::MachOVersionMin)
       Dumper->printMachOVersionMin();
+    if (opts::MachODysymtab)
+      Dumper->printMachODysymtab();
   }
   if (opts::PrintStackMap)
     Dumper->printStackMap();
