Initial add for MachO support for obj2yaml

Adding the initial files for adding MachO support to obj2yaml. Passing a MachO file will result in a new not_implemented error.

I will be implementing obj2yaml and yaml2obj for MachO in parallel so that one can be used to test the other.

llvm-svn: 269243

tools/obj2yaml/CMakeLists.txt

@@ -5,5 +5,9 @@ set(LLVM_LINK_COMPONENTS
   )
 
 add_llvm_tool(obj2yaml
-  obj2yaml.cpp coff2yaml.cpp elf2yaml.cpp Error.cpp
+  obj2yaml.cpp
+  coff2yaml.cpp
+  elf2yaml.cpp
+  macho2yaml.cpp
+  Error.cpp
   )

tools/obj2yaml/Error.cpp

@@ -34,6 +34,8 @@ std::string _obj2yaml_error_category::message(int ev) const {
     return "Unrecognized file type.";
   case obj2yaml_error::unsupported_obj_file_format:
     return "Unsupported object file format.";
+  case obj2yaml_error::not_implemented:
+    return "Feature not yet implemented.";
   }
   llvm_unreachable("An enumerator of obj2yaml_error does not have a message "
                    "defined.");

tools/obj2yaml/Error.h

@@ -19,7 +19,8 @@ enum class obj2yaml_error {
   success = 0,
   file_not_found,
   unrecognized_file_format,
-  unsupported_obj_file_format
+  unsupported_obj_file_format,
+  not_implemented
 };
 
 inline std::error_code make_error_code(obj2yaml_error e) {

tools/obj2yaml/macho2yaml.cpp

@@ -0,0 +1,35 @@
+//===------ macho2yaml.cpp - obj2yaml conversion tool -----------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Error.h"
+#include "obj2yaml.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Object/MachOUniversal.h"
+
+using namespace llvm;
+
+std::error_code macho2yaml(raw_ostream &Out,
+                           const object::MachOObjectFile &Obj) {
+  return obj2yaml_error::not_implemented;
+}
+
+std::error_code macho2yaml(raw_ostream &Out,
+                           const object::MachOUniversalBinary &Obj) {
+  return obj2yaml_error::not_implemented;
+}
+
+std::error_code macho2yaml(raw_ostream &Out, const object::ObjectFile &Obj) {
+  if (const auto *MachOObj = dyn_cast<object::MachOUniversalBinary>(&Obj))
+    return macho2yaml(Out, *MachOObj);
+
+  if (const auto *MachOObj = dyn_cast<object::MachOObjectFile>(&Obj))
+    return macho2yaml(Out, *MachOObj);
+
+  return obj2yaml_error::unsupported_obj_file_format;
+}

tools/obj2yaml/obj2yaml.cpp

@@ -24,6 +24,8 @@ static std::error_code dumpObject(const ObjectFile &Obj) {
     return coff2yaml(outs(), cast<COFFObjectFile>(Obj));
   if (Obj.isELF())
     return elf2yaml(outs(), Obj);
+  if (Obj.isMachO() || Obj.isMachOUniversalBinary())
+    return macho2yaml(outs(), Obj);
 
   return obj2yaml_error::unsupported_obj_file_format;
 }

tools/obj2yaml/obj2yaml.h

@@ -21,5 +21,7 @@ std::error_code coff2yaml(llvm::raw_ostream &Out,
                           const llvm::object::COFFObjectFile &Obj);
 std::error_code elf2yaml(llvm::raw_ostream &Out,
                          const llvm::object::ObjectFile &Obj);
+std::error_code macho2yaml(llvm::raw_ostream &Out,
+                         const llvm::object::ObjectFile &Obj);
 
 #endif