1 files changed, 148 insertions, 0 deletions
diff --git a/Runtime/Utilities/EndianHelper.h b/Runtime/Utilities/EndianHelper.h
new file mode 100644
index 0000000..42df0ac
--- /dev/null
+++ b/Runtime/Utilities/EndianHelper.h
@@ -0,0 +1,148 @@
+#ifndef UNITY_ENDIAN_HELPER_H_
+#define UNITY_ENDIAN_HELPER_H_
+
+
+enum EndianMode {
+	kEndianDirect	= 0,
+	kEndianConvert	= 1,
+#if UNITY_BIG_ENDIAN
+	kHostEndian		= kEndianDirect,
+	kTargetEndian	= kEndianDirect,
+#else
+	kHostEndian		= kEndianConvert,
+	kTargetEndian	= kEndianConvert,
+#endif
+};
+
+	template<EndianMode Endian>
+	struct EndianHelper;
+
+	template<>
+	struct EndianHelper<kEndianDirect>
+	{
+		static UInt16 Load( UInt16 const* p ) {
+			return *p;
+		}
+
+		static UInt32 Load( UInt32 const* p ) {
+			return *p;
+		}
+
+		template<int Offset>
+		static void Store( UInt16* p, UInt16 arg ) {
+			*reinterpret_cast<UInt16*>( ((intptr_t)p + Offset) ) = arg;
+		}
+
+		template<int Offset>
+		static void Store( UInt32* p, UInt32 arg ) {
+			*reinterpret_cast<UInt32*>( ((intptr_t)p + Offset) ) = arg;
+		}
+
+	};
+
+	template<>
+	struct EndianHelper<kEndianConvert>
+	{
+		static UInt16 Load( register UInt16 const* p ) {
+//#if defined(__native_client__) || (defined(__GNUC__) && !defined(__APPLE__))
+			return ((*p&0xff00U)>>8) | ((*p&0x00ffU)<<8);
+//#elif defined(__ppc__)
+//			register UInt16 temp;
+//			__asm {
+//				lhbrx temp, 0, p
+//			}
+//			return temp;
+//#elif defined(__i386) || defined(_M_IX86)
+//			register UInt16 temp = *p;
+//			__asm {
+//				mov ax, temp
+//				xchg ah, al
+//				mov temp, ax
+//			}
+//			return temp;
+//#else
+//#error "Unsupported architecture"
+//#endif
+		}
+
+		static UInt32 Load( register UInt32 const* p ) {
+//#if defined(__native_client__) || (defined(__GNUC__) && !defined(__APPLE__))
+			return
+				((*p&0xff000000U)>>24) |
+				((*p&0x00ff0000U)>>8) |
+				((*p&0x0000ff00U)<<8) |
+				((*p&0x000000ffU)<<24)
+			;
+//#elif defined(__ppc__)
+//			register UInt32 temp;
+//			__asm {
+//				lwbrx r4, 0, p
+//			}
+//			return temp;
+//#elif defined(__i386) || defined(_M_IX86)
+//			register UInt32 temp = *p;
+//			__asm {
+//				mov eax, temp
+//				bswap eax
+//				mov temp, eax
+//			}
+//			return temp;
+//#else
+//#error "Unsupported architecture"
+//#endif
+		}
+
+		// Offset is in bytes
+		template<int Offset>
+		static void Store( register UInt16* p, register UInt16 arg ) {
+//#if defined(__native_client__) || (defined(__GNUC__) && !defined(__APPLE__))
+			UInt16 temp = ((arg&0xff00U)>>8) | ((arg&0x00ffU)<<8);
+			*(UInt16*)((UInt8*)p + Offset) = temp;
+//#elif defined(__ppc__)
+//			register short int ofs = Offset;
+//			__asm {
+//				sthbrx arg, ofs, p
+//			}
+//#elif defined(__i386) || defined(_M_IX86)
+//			register void* pp = (void*)((uintptr_t)p + Offset);
+//			__asm {
+//				mov ax, arg
+//				xchg ah, al
+//				mov ecx, dword ptr [pp]
+//				mov word ptr [ecx], ax
+//			}
+//#else
+//#error "Unsupported architecture"
+//#endif
+		}
+
+		template<int Offset>
+		static void Store( register UInt32* p, register UInt32 arg ) {
+//#if defined(__native_client__) || (defined(__GNUC__) && !defined(__APPLE__))
+			UInt32 temp =
+				((arg&0xff000000U)>>24) |
+				((arg&0x00ff0000U)>>8) |
+				((arg&0x0000ff00U)<<8) |
+				((arg&0x000000ffU)<<24)
+			;
+			*(UInt32*)((UInt8*)p + Offset) = temp;
+//#elif defined(__ppc__)
+//			register short int ofs = Offset;
+//			__asm {
+//				stwbrx arg, ofs, p
+//			}
+//#elif defined(__i386) || defined(_M_IX86)
+//			register void* pp = (void*)((uintptr_t)p + Offset);
+//			__asm {
+//				mov eax, arg
+//				bswap eax
+//				mov ecx, dword ptr [pp]
+//				mov word ptr [ecx], eax
+//			}
+//#else
+//#error "Unsupported architecture"
+//#endif
+		}
+	};
+
+#endif // UNITY_ENDIAN_HELPER_H_