diff --git a/plugins/GSdx/stdafx.h b/plugins/GSdx/stdafx.h
index 082aa4440a..99d6869919 100644
--- a/plugins/GSdx/stdafx.h
+++ b/plugins/GSdx/stdafx.h
@@ -387,80 +387,6 @@ struct aligned_free_second {template<class T> void operator()(T& p) {_aligned_fr
 		return Mask ? 1 : 0;
 	}
 
-	__forceinline unsigned char _interlockedbittestandreset(volatile long* a, const long b)
-	{
-		unsigned char retval;
-		
-		__asm__("lock; btrl %k[b], %[a]; setb %b[retval]" : [retval] "=q" (retval), [a] "+m" (*a) : [b] "Ir" (b) : "memory");
-		
-		return retval;
-	}
-
-	__forceinline unsigned char _interlockedbittestandset(volatile long* a, const long b)
-	{
-		unsigned char retval;
-		
-		__asm__("lock; btsl %k[b], %[a]; setc %b[retval]" : [retval] "=q" (retval), [a] "+m" (*a) : [b] "Ir" (b) : "memory");
-		
-		return retval;
-	}
-
-	__forceinline long _InterlockedCompareExchange(volatile long* const Destination, const long Exchange, const long Comperand)
-	{
-		long retval = Comperand;
-		
-		__asm__("lock; cmpxchgl %k[Exchange], %[Destination]" : [retval] "+a" (retval) : [Destination] "m" (*Destination), [Exchange] "q" (Exchange): "memory");
-		
-		return retval;
-	}
-
-	__forceinline long _InterlockedExchange(volatile long* const Target, const long Value)
-	{
-		long retval = Value;
-		
-		__asm__("xchgl %[retval], %[Target]" : [retval] "+r" (retval) : [Target] "m" (*Target) : "memory");
-
-		return retval;
-	}
-
-	__forceinline long _InterlockedExchangeAdd(volatile long* const Addend, const long Value)
-	{
-		long retval = Value;
-		
-		__asm__("lock; xaddl %[retval], %[Addend]" : [retval] "+r" (retval) : [Addend] "m" (*Addend) : "memory");
-		
-		return retval;
-	}
-	
-	__forceinline short _InterlockedExchangeAdd16(volatile short* const Addend, const short Value)
-	{
-		short retval = Value;
-		
-		__asm__("lock; xaddw %[retval], %[Addend]" : [retval] "+r" (retval) : [Addend] "m" (*Addend) : "memory");
-		
-		return retval;
-	}
-
-	__forceinline long _InterlockedDecrement(volatile long* const lpAddend)
-	{
-		return _InterlockedExchangeAdd(lpAddend, -1) - 1;
-	}
-	
-	__forceinline long _InterlockedIncrement(volatile long* const lpAddend)
-	{
-		return _InterlockedExchangeAdd(lpAddend, 1) + 1;
-	}
-	
-	__forceinline short _InterlockedDecrement16(volatile short* const lpAddend)
-	{
-		return _InterlockedExchangeAdd16(lpAddend, -1) - 1;
-	}
-	
-	__forceinline short _InterlockedIncrement16(volatile short* const lpAddend)
-	{
-		return _InterlockedExchangeAdd16(lpAddend, 1) + 1;
-	}
-
 	#ifdef __GNUC__
 
 	// gcc 4.8 define __rdtsc but unfortunately the compiler crash...