Index: /trunk/src/VBox/VMM/Makefile.kmk
===================================================================
--- /trunk/src/VBox/VMM/Makefile.kmk	(revision 37010)
+++ /trunk/src/VBox/VMM/Makefile.kmk	(revision 37011)
@@ -566,6 +566,8 @@
 if1of ($(KBUILD_TARGET), win)
 #VMMAll/IEMAll.cpp_CXXFLAGS = TODO
+#else if1of ($(KBUILD_TARGET_ARCH), amd64)
+# VMMAll/IEMAll.cpp_CXXFLAGS = -O2 -fomit-frame-pointer
 else
-VMMAll/IEMAll.cpp_CXXFLAGS = -O2 #-fomit-frame-pointer - latter causes trouble on mac.
+ VMMAll/IEMAll.cpp_CXXFLAGS = -O2 #-fomit-frame-pointer - latter causes trouble on mac.
 endif
 
Index: /trunk/src/VBox/VMM/VMMAll/IEMAll.cpp
===================================================================
--- /trunk/src/VBox/VMM/VMMAll/IEMAll.cpp	(revision 37010)
+++ /trunk/src/VBox/VMM/VMMAll/IEMAll.cpp	(revision 37011)
@@ -88,7 +88,7 @@
     static VBOXSTRICTRC __attribute__((__fastcall__, __nothrow__)) a_Name (PIEMCPU pIemCpu)
 # define FNIEMOP_DEF_1(a_Name, a_Type0, a_Name0) \
-    static VBOXSTRICTRC __attribute__((__fastcall__, __nothrow__)) a_Name(PIEMCPU pIemCpu, a_Type0 a_Name0) RT_NO_THROW
+    static VBOXSTRICTRC __attribute__((__fastcall__, __nothrow__)) a_Name(PIEMCPU pIemCpu, a_Type0 a_Name0)
 # define FNIEMOP_DEF_2(a_Name, a_Type0, a_Name0, a_Type1, a_Name1) \
-    static VBOXSTRICTRC __attribute__((__fastcall__, __nothrow__)) a_Name(PIEMCPU pIemCpu, a_Type0 a_Name0, a_Type1 a_Name1) RT_NO_THROW
+    static VBOXSTRICTRC __attribute__((__fastcall__, __nothrow__)) a_Name(PIEMCPU pIemCpu, a_Type0 a_Name0, a_Type1 a_Name1)
 
 #elif defined(_MSC_VER) && defined(RT_ARCH_X86)
@@ -100,4 +100,13 @@
 # define FNIEMOP_DEF_2(a_Name, a_Type0, a_Name0, a_Type1, a_Name1) \
     static /*__declspec(naked)*/ VBOXSTRICTRC __fastcall a_Name(PIEMCPU pIemCpu, a_Type0 a_Name0, a_Type1 a_Name1) RT_NO_THROW
+
+#elif defined(__GNUC__)
+typedef VBOXSTRICTRC (* PFNIEMOP)(PIEMCPU pIemCpu);
+# define FNIEMOP_DEF(a_Name) \
+    static VBOXSTRICTRC __attribute__((__nothrow__)) a_Name(PIEMCPU pIemCpu)
+# define FNIEMOP_DEF_1(a_Name, a_Type0, a_Name0) \
+    static VBOXSTRICTRC __attribute__((__nothrow__)) a_Name(PIEMCPU pIemCpu, a_Type0 a_Name0)
+# define FNIEMOP_DEF_2(a_Name, a_Type0, a_Name0, a_Type1, a_Name1) \
+    static VBOXSTRICTRC __attribute__((__nothrow__)) a_Name(PIEMCPU pIemCpu, a_Type0 a_Name0, a_Type1 a_Name1)
 
 #else
@@ -749,5 +758,5 @@
  * @param   pb                  Where to return the opcode byte.
  */
-static VBOXSTRICTRC iemOpcodeGetNextByteSlow(PIEMCPU pIemCpu, uint8_t *pb)
+DECL_NO_INLINE(static, VBOXSTRICTRC) iemOpcodeGetNextByteSlow(PIEMCPU pIemCpu, uint8_t *pb)
 {
     VBOXSTRICTRC rcStrict = iemOpcodeFetchMoreBytes(pIemCpu, 1);
@@ -771,5 +780,5 @@
  * @param   pu16                Where to return the opcode dword.
  */
-static VBOXSTRICTRC iemOpcodeGetNextS8SxU16Slow(PIEMCPU pIemCpu, uint16_t *pu16)
+DECL_NO_INLINE(static, VBOXSTRICTRC) iemOpcodeGetNextS8SxU16Slow(PIEMCPU pIemCpu, uint16_t *pu16)
 {
     uint8_t     u8;
@@ -788,5 +797,5 @@
  * @param   pu16                Where to return the opcode word.
  */
-static VBOXSTRICTRC iemOpcodeGetNextU16Slow(PIEMCPU pIemCpu, uint16_t *pu16)
+DECL_NO_INLINE(static, VBOXSTRICTRC) iemOpcodeGetNextU16Slow(PIEMCPU pIemCpu, uint16_t *pu16)
 {
     VBOXSTRICTRC rcStrict = iemOpcodeFetchMoreBytes(pIemCpu, 2);
@@ -810,5 +819,5 @@
  * @param   pu32                Where to return the opcode dword.
  */
-static VBOXSTRICTRC iemOpcodeGetNextU32Slow(PIEMCPU pIemCpu, uint32_t *pu32)
+DECL_NO_INLINE(static, VBOXSTRICTRC) iemOpcodeGetNextU32Slow(PIEMCPU pIemCpu, uint32_t *pu32)
 {
     VBOXSTRICTRC rcStrict = iemOpcodeFetchMoreBytes(pIemCpu, 4);
@@ -835,5 +844,5 @@
  * @param   pu64                Where to return the opcode qword.
  */
-static VBOXSTRICTRC iemOpcodeGetNextS32SxU64Slow(PIEMCPU pIemCpu, uint64_t *pu64)
+DECL_NO_INLINE(static, VBOXSTRICTRC) iemOpcodeGetNextS32SxU64Slow(PIEMCPU pIemCpu, uint64_t *pu64)
 {
     VBOXSTRICTRC rcStrict = iemOpcodeFetchMoreBytes(pIemCpu, 4);
@@ -860,5 +869,5 @@
  * @param   pu64                Where to return the opcode qword.
  */
-static VBOXSTRICTRC iemOpcodeGetNextU64Slow(PIEMCPU pIemCpu, uint64_t *pu64)
+DECL_NO_INLINE(static, VBOXSTRICTRC) iemOpcodeGetNextU64Slow(PIEMCPU pIemCpu, uint64_t *pu64)
 {
     VBOXSTRICTRC rcStrict = iemOpcodeFetchMoreBytes(pIemCpu, 8);