Engine directory for ticket #1

Engine/source/platform/platformIntrinsics.gcc.h

@@ -0,0 +1,101 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#ifndef _TORQUE_PLATFORM_PLATFORMINTRINSICS_GCC_H_
+#define _TORQUE_PLATFORM_PLATFORMINTRINSICS_GCC_H_
+
+/// @file
+/// Compiler intrinsics for GCC.
+
+#ifdef TORQUE_OS_MAC
+#include <libkern/OSAtomic.h>
+#elif defined(TORQUE_OS_PS3)
+#include <cell/atomic.h>
+#endif
+
+// Fetch-And-Add
+//
+// NOTE: These do not return the pre-add value because
+// not all platforms (damn you OSX) can do that.
+//
+inline void dFetchAndAdd( volatile U32& ref, U32 val )
+{
+   #if defined(TORQUE_OS_PS3)
+      cellAtomicAdd32( (std::uint32_t *)&ref, val );
+   #elif !defined(TORQUE_OS_MAC)
+      __sync_fetch_and_add( ( volatile long* ) &ref, val );
+   #else
+      OSAtomicAdd32( val, (int32_t* ) &ref);
+   #endif
+}
+
+inline void dFetchAndAdd( volatile S32& ref, S32 val )
+{
+   #if defined(TORQUE_OS_PS3)
+      cellAtomicAdd32( (std::uint32_t *)&ref, val );
+   #elif !defined(TORQUE_OS_MAC)
+      __sync_fetch_and_add( ( volatile long* ) &ref, val );
+   #else
+      OSAtomicAdd32( val, (int32_t* ) &ref);
+   #endif
+}
+
+// Compare-And-Swap
+
+inline bool dCompareAndSwap( volatile U32& ref, U32 oldVal, U32 newVal )
+{
+   // bool
+   //OSAtomicCompareAndSwap32(int32_t oldValue, int32_t newValue, volatile int32_t *theValue);
+   #if defined(TORQUE_OS_PS3)
+      return ( cellAtomicCompareAndSwap32( (std::uint32_t *)&ref, newVal, oldVal ) == oldVal );
+   #elif !defined(TORQUE_OS_MAC)
+      return ( __sync_val_compare_and_swap( ( volatile long* ) &ref, oldVal, newVal ) == oldVal );
+   #else
+      return OSAtomicCompareAndSwap32(oldVal, newVal, (int32_t *) &ref);
+   #endif
+}
+
+inline bool dCompareAndSwap( volatile U64& ref, U64 oldVal, U64 newVal )
+{
+   #if defined(TORQUE_OS_PS3)
+      return ( cellAtomicCompareAndSwap32( (std::uint32_t *)&ref, newVal, oldVal ) == oldVal );
+   #elif !defined(TORQUE_OS_MAC)
+      return ( __sync_val_compare_and_swap( ( volatile long long* ) &ref, oldVal, newVal ) == oldVal );
+   #else
+      return OSAtomicCompareAndSwap64(oldVal, newVal, (int64_t *) &ref);
+   #endif
+
+}
+
+/// Performs an atomic read operation.
+inline U32 dAtomicRead( volatile U32 &ref )
+{
+   #if defined(TORQUE_OS_PS3)
+      return cellAtomicAdd32( (std::uint32_t *)&ref, 0 );
+   #elif !defined(TORQUE_OS_MAC)
+      return __sync_fetch_and_add( ( volatile long* ) &ref, 0 );
+   #else
+      return OSAtomicAdd32( 0, (int32_t* ) &ref);
+   #endif
+}
+
+#endif // _TORQUE_PLATFORM_PLATFORMINTRINSICS_GCC_H_