diff --git a/desmume/src/types.h b/desmume/src/types.h
new file mode 100644
index 000000000..6bf6101a3
--- /dev/null
+++ b/desmume/src/types.h
@@ -0,0 +1,75 @@
+/*  Copyright (C) 2005 Guillaume Duhamel
+
+    This file is part of DeSmuME
+
+    DeSmuME is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    DeSmuME is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DeSmuME; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#ifndef TYPES_HPP
+#define TYPES_HPP
+
+#ifndef FASTCALL
+#ifdef __i386__
+#define FASTCALL __attribute__((regparm(3)))
+#else
+#define FASTCALL
+#endif
+#endif
+
+#ifndef __fastcall
+#define __fastcall FASTCALL
+#endif
+
+#ifndef INLINE
+#ifdef _MSC_VER
+#define INLINE _inline
+#else
+#define INLINE inline
+#endif
+#endif
+
+#if defined(__LP64__)
+typedef unsigned char u8;
+typedef unsigned short u16;
+typedef unsigned int u32;
+typedef unsigned long u64;
+typedef unsigned long pointer;
+
+typedef signed char s8;
+typedef signed short s16;
+typedef signed int s32;
+typedef signed long s64;
+#else
+typedef unsigned char u8;
+typedef unsigned short u16;
+typedef unsigned long u32;
+#ifdef _MSC_VER
+typedef unsigned __int64 u64;
+#else
+typedef unsigned long long u64;
+#endif
+typedef unsigned long pointer;
+
+typedef signed char s8;
+typedef signed short s16;
+typedef signed long s32;
+#ifdef _MSC_VER
+typedef __int64 s64;
+#else
+typedef signed long long s64;
+#endif
+#endif
+
+#endif