Line data    Source code

       1             : /* Copyright (C) 2010 Wildfire Games.
       2             :  *
       3             :  * Permission is hereby granted, free of charge, to any person obtaining
       4             :  * a copy of this software and associated documentation files (the
       5             :  * "Software"), to deal in the Software without restriction, including
       6             :  * without limitation the rights to use, copy, modify, merge, publish,
       7             :  * distribute, sublicense, and/or sell copies of the Software, and to
       8             :  * permit persons to whom the Software is furnished to do so, subject to
       9             :  * the following conditions:
      10             :  *
      11             :  * The above copyright notice and this permission notice shall be included
      12             :  * in all copies or substantial portions of the Software.
      13             :  *
      14             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
      15             :  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
      16             :  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
      17             :  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
      18             :  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
      19             :  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
      20             :  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
      21             :  */
      22             : 
      23             : #include "precompiled.h"
      24             : 
      25             : #if ARCH_AMD64
      26             : 
      27             : #include "lib/sysdep/cpu.h"
      28             : #include "lib/sysdep/arch/amd64/amd64.h"
      29             : 
      30             : 
      31           0 : void cpu_ConfigureFloatingPoint()
      32             : {
      33             :     // 64-bit CPUs use SSE2 for all floating-point operations, so we
      34             :     // don't need to change the FPU control word.
      35           0 : }
      36             : 
      37             : #if MSC_VERSION
      38             : 
      39             : // VC 2008 and ICC 12 differ in their declaration of _Interlocked*
      40             : #if ICC_VERSION
      41             : typedef __int64* P64;
      42             : #else
      43             : typedef volatile __int64* P64;
      44             : #endif
      45             : 
      46             : bool cpu_CAS(volatile intptr_t* location, intptr_t expected, intptr_t newValue)
      47             : {
      48             :     const intptr_t initial = _InterlockedCompareExchange64((P64)location, newValue, expected);
      49             :     return initial == expected;
      50             : }
      51             : 
      52             : bool cpu_CAS64(volatile i64* location, i64 expected, i64 newValue)
      53             : {
      54             :     const i64 initial = _InterlockedCompareExchange64((P64)location, newValue, expected);
      55             :     return initial == expected;
      56             : }
      57             : 
      58             : intptr_t cpu_AtomicAdd(volatile intptr_t* location, intptr_t increment)
      59             : {
      60             :     return _InterlockedExchangeAdd64((P64)location, increment);
      61             : }
      62             : 
      63             : #elif OS_MACOSX
      64             : 
      65             : #include <libkern/OSAtomic.h>
      66             : 
      67             : intptr_t cpu_AtomicAdd(volatile intptr_t* location, intptr_t increment)
      68             : {
      69             :     cassert(sizeof(intptr_t) == sizeof(int64_t));
      70             :     return OSAtomicAdd64Barrier(increment, (volatile int64_t*)location);
      71             : }
      72             : 
      73             : bool cpu_CAS(volatile intptr_t* location, intptr_t expected, intptr_t newValue)
      74             : {
      75             :     cassert(sizeof(intptr_t) == sizeof(void*));
      76             :     return OSAtomicCompareAndSwapPtrBarrier((void*)expected, (void*)newValue, (void* volatile*)location);
      77             : }
      78             : 
      79             : bool cpu_CAS64(volatile i64* location, i64 expected, i64 newValue)
      80             : {
      81             :     return OSAtomicCompareAndSwap64Barrier(expected, newValue, location);
      82             : }
      83             : 
      84             : #elif GCC_VERSION
      85             : 
      86           0 : intptr_t cpu_AtomicAdd(volatile intptr_t* location, intptr_t increment)
      87             : {
      88           0 :     return __sync_fetch_and_add(location, increment);
      89             : }
      90             : 
      91       25415 : bool cpu_CAS(volatile intptr_t* location, intptr_t expected, intptr_t newValue)
      92             : {
      93       25415 :     return __sync_bool_compare_and_swap(location, expected, newValue);
      94             : }
      95             : 
      96           0 : bool cpu_CAS64(volatile i64* location, i64 expected, i64 newValue)
      97             : {
      98           0 :     return __sync_bool_compare_and_swap(location, expected, newValue);
      99           3 : }
     100             : 
     101             : #endif
     102             : 
     103             : #endif // ARCH_AMD64