[CRT/INTRIN_X86]

Add InterlockedExchange8/16 for GCC. Reviewed by Timo.

svn path=/trunk/; revision=63572

diff --git a/reactos/include/crt/mingw32/intrin_x86.h b/reactos/include/crt/mingw32/intrin_x86.h
index f8f77b0..d9dcced 100644 (file)
--- a/reactos/include/crt/mingw32/intrin_x86.h
+++ b/reactos/include/crt/mingw32/intrin_x86.h
@@ -150,6 +150,8 @@ __INTRIN_INLINE char _InterlockedCompareExchange8(volatile char * const Destinat
 __INTRIN_INLINE short _InterlockedCompareExchange16(volatile short * const Destination, const short Exchange, const short Comperand);
 __INTRIN_INLINE long _InterlockedCompareExchange(volatile long * const Destination, const long Exchange, const long Comperand);
 __INTRIN_INLINE void * _InterlockedCompareExchangePointer(void * volatile * const Destination, void * const Exchange, void * const Comperand);
+__INTRIN_INLINE char _InterlockedExchange8(volatile char * const Target, const char Value);
+__INTRIN_INLINE short _InterlockedExchange16(volatile short * const Target, const short Value);
 __INTRIN_INLINE long _InterlockedExchange(volatile long * const Target, const long Value);
 __INTRIN_INLINE void * _InterlockedExchangePointer(void * volatile * const Target, void * const Value);
 __INTRIN_INLINE long _InterlockedExchangeAdd16(volatile short * const Addend, const short Value);
@@ -199,6 +201,20 @@ __INTRIN_INLINE void * _InterlockedCompareExchangePointer(void * volatile * cons
        return (void *)__sync_val_compare_and_swap(Destination, Comperand, Exchange);
 }
 
+__INTRIN_INLINE char _InterlockedExchange8(volatile char * const Target, const char Value)
+{
+       /* NOTE: __sync_lock_test_and_set would be an acquire barrier, so we force a full barrier */
+       __sync_synchronize();
+       return __sync_lock_test_and_set(Target, Value);
+}
+
+__INTRIN_INLINE short _InterlockedExchange16(volatile short * const Target, const short Value)
+{
+       /* NOTE: __sync_lock_test_and_set would be an acquire barrier, so we force a full barrier */
+       __sync_synchronize();
+       return __sync_lock_test_and_set(Target, Value);
+}
+
 __INTRIN_INLINE long _InterlockedExchange(volatile long * const Target, const long Value)
 {
        /* NOTE: __sync_lock_test_and_set would be an acquire barrier, so we force a full barrier */
@@ -217,7 +233,7 @@ __INTRIN_INLINE long long _InterlockedExchange64(volatile long long * const Targ
 
 __INTRIN_INLINE void * _InterlockedExchangePointer(void * volatile * const Target, void * const Value)
 {
-       /* NOTE: ditto */
+       /* NOTE: __sync_lock_test_and_set would be an acquire barrier, so we force a full barrier */
        __sync_synchronize();
        return (void *)__sync_lock_test_and_set(Target, Value);
 }
@@ -347,6 +363,8 @@ __INTRIN_INLINE char _InterlockedCompareExchange8(volatile char * const Destinat
 __INTRIN_INLINE short _InterlockedCompareExchange16(volatile short * const Destination, const short Exchange, const short Comperand);
 __INTRIN_INLINE long _InterlockedCompareExchange(volatile long * const Destination, const long Exchange, const long Comperand);
 __INTRIN_INLINE void * _InterlockedCompareExchangePointer(void * volatile * const Destination, void * const Exchange, void * const Comperand);
+__INTRIN_INLINE char _InterlockedExchange8(volatile char * const Target, const char Value);
+__INTRIN_INLINE short _InterlockedExchange16(volatile short * const Target, const short Value);
 __INTRIN_INLINE long _InterlockedExchange(volatile long * const Target, const long Value);
 __INTRIN_INLINE void * _InterlockedExchangePointer(void * volatile * const Target, void * const Value);
 __INTRIN_INLINE long _InterlockedExchangeAdd16(volatile short * const Addend, const short Value);
@@ -397,6 +415,20 @@ __INTRIN_INLINE void * _InterlockedCompareExchangePointer(void * volatile * cons
        return retval;
 }
 
+__INTRIN_INLINE char _InterlockedExchange8(volatile char * const Target, const char Value)
+{
+       char retval = Value;
+       __asm__("xchgb %[retval], %[Target]" : [retval] "+r" (retval) : [Target] "m" (*Target) : "memory");
+       return retval;
+}
+
+__INTRIN_INLINE short _InterlockedExchange16(volatile short * const Target, const short Value)
+{
+       short retval = Value;
+       __asm__("xchgw %[retval], %[Target]" : [retval] "+r" (retval) : [Target] "m" (*Target) : "memory");
+       return retval;
+}
+
 __INTRIN_INLINE long _InterlockedExchange(volatile long * const Target, const long Value)
 {
        long retval = Value;