[llvm-readobj] Dump MachO Dysymtab command.

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

1 files changed, 28 insertions, 0 deletions

diff --git a/llvm/tools/llvm-readobj/MachODumper.cpp b/llvm/tools/llvm-readobj/MachODumper.cpp
index 57db9ed7b2d..e7cda4d84d4 100644
--- a/llvm/tools/llvm-readobj/MachODumper.cpp
+++ b/llvm/tools/llvm-readobj/MachODumper.cpp
@@ -43,6 +43,7 @@ public:
   // 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);
+    }
+  }
+}