Add all 4 MachO object types. Use the stored type to implement is64Bits().

llvm-svn: 179021

llvm/include/llvm/Object/Binary.h

@@ -41,11 +41,17 @@ protected:
     // Object and children.
     ID_StartObjects,
     ID_COFF,
+
     ID_ELF32L, // ELF 32-bit, little endian
     ID_ELF32B, // ELF 32-bit, big endian
     ID_ELF64L, // ELF 64-bit, little endian
     ID_ELF64B, // ELF 64-bit, big endian
-    ID_MachO,
+
+    ID_MachO32L, // MachO 32-bit, little endian
+    ID_MachO32B, // MachO 32-bit, big endian
+    ID_MachO64L, // MachO 64-bit, little endian
+    ID_MachO64B, // MachO 64-bit, big endian
+
     ID_EndObjects
   };
 
@@ -56,6 +62,13 @@ protected:
       return is64Bits ? ID_ELF64B : ID_ELF32B;
   }
 
+  static unsigned int getMachOType(bool isLE, bool is64Bits) {
+    if (isLE)
+      return is64Bits ? ID_MachO64L : ID_MachO32L;
+    else
+      return is64Bits ? ID_MachO64B : ID_MachO32B;
+  }
+
 public:
   virtual ~Binary();
 
@@ -79,7 +92,7 @@ public:
   }
 
   bool isMachO() const {
-    return TypeID == ID_MachO;
+    return TypeID >= ID_MachO32L && TypeID <= ID_MachO64B;
   }
 
   bool isCOFF() const {

llvm/include/llvm/Object/MachO.h

@@ -139,7 +139,7 @@ namespace MachOFormat {
 
 class MachOObjectFile : public ObjectFile {
 public:
-  MachOObjectFile(MemoryBuffer *Object, error_code &ec);
+  MachOObjectFile(MemoryBuffer *Object, bool Is64bits, error_code &ec);
 
   virtual symbol_iterator begin_symbols() const;
   virtual symbol_iterator end_symbols() const;

llvm/lib/Object/MachOObjectFile.cpp

@@ -28,8 +28,9 @@ using namespace object;
 namespace llvm {
 namespace object {
 
-MachOObjectFile::MachOObjectFile(MemoryBuffer *Object, error_code &ec)
-    : ObjectFile(Binary::ID_MachO, Object) {
+MachOObjectFile::MachOObjectFile(MemoryBuffer *Object, bool Is64bits,
+                                 error_code &ec)
+    : ObjectFile(getMachOType(true, Is64bits), Object) {
   DataRefImpl DRI;
   moveToNextSection(DRI);
   uint32_t LoadCommandCount = getHeader()->NumLoadCommands;
@@ -41,8 +42,8 @@ MachOObjectFile::MachOObjectFile(MemoryBuffer *Object, error_code &ec)
 }
 
 bool MachOObjectFile::is64Bit() const {
-  StringRef Magic = getData(0, 4);
-  return (Magic == "\xFE\xED\xFA\xCF") || (Magic == "\xCF\xFA\xED\xFE");
+  unsigned int Type = getType();
+  return Type == ID_MachO64L || Type == ID_MachO64B;
 }
 
 const MachOFormat::LoadCommand *
@@ -88,8 +89,10 @@ StringRef MachOObjectFile::getData(size_t Offset, size_t Size) const {
 }
 
 ObjectFile *ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer) {
+  StringRef Magic = Buffer->getBuffer().slice(0, 4);
   error_code ec;
-  ObjectFile *Ret = new MachOObjectFile(Buffer, ec);
+  bool Is64Bits = Magic == "\xFE\xED\xFA\xCF" || Magic == "\xCF\xFA\xED\xFE";
+  ObjectFile *Ret = new MachOObjectFile(Buffer, Is64Bits, ec);
   if (ec)
     return NULL;
   return Ret;