\r
**/\r
\r
+#include "BaseLibInternals.h"\r
+\r
#define SPIN_LOCK_RELEASED ((SPIN_LOCK)1)\r
#define SPIN_LOCK_ACQUIRED ((SPIN_LOCK)2)\r
\r
-/**\r
- Performs an atomic increment of an 32-bit unsigned integer.\r
-\r
- Performs an atomic increment of the 32-bit unsigned integer specified by\r
- Value and returns the incremented value. The increment operation must be\r
- performed using MP safe mechanisms. The state of the return value is not\r
- guaranteed to be MP safe.\r
-\r
- @param Value A pointer to the 32-bit value to increment.\r
-\r
- @return The incremented value.\r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-InternalSyncIncrement (\r
- IN volatile UINT32 *Value\r
- );\r
-\r
-/**\r
- Performs an atomic decrement of an 32-bit unsigned integer.\r
-\r
- Performs an atomic decrement of the 32-bit unsigned integer specified by\r
- Value and returns the decrement value. The decrement operation must be\r
- performed using MP safe mechanisms. The state of the return value is not\r
- guaranteed to be MP safe.\r
-\r
- @param Value A pointer to the 32-bit value to decrement.\r
-\r
- @return The decrement value.\r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-InternalSyncDecrement (\r
- IN volatile UINT32 *Value\r
- );\r
-\r
-/**\r
- Performs an atomic compare exchange operation on a 32-bit unsigned integer.\r
-\r
- Performs an atomic compare exchange operation on the 32-bit unsigned integer\r
- specified by Value. If Value is equal to CompareValue, then Value is set to \r
- ExchangeValue and CompareValue is returned. If Value is not equal to CompareValue,\r
- then Value is returned. The compare exchange operation must be performed using \r
- MP safe mechanisms.\r
-\r
- @param Value A pointer to the 32-bit value for the compare exchange\r
- operation.\r
- @param CompareValue 32-bit value used in compare operation.\r
- @param ExchangeValue 32-bit value used in exchange operation.\r
-\r
- @return The original *Value before exchange.\r
-\r
-**/\r
-UINT32\r
-EFIAPI\r
-InternalSyncCompareExchange32 (\r
- IN volatile UINT32 *Value,\r
- IN UINT32 CompareValue,\r
- IN UINT32 ExchangeValue\r
- );\r
-\r
-/**\r
- Performs an atomic compare exchange operation on a 64-bit unsigned integer.\r
-\r
- Performs an atomic compare exchange operation on the 64-bit unsigned integer specified \r
- by Value. If Value is equal to CompareValue, then Value is set to ExchangeValue and \r
- CompareValue is returned. If Value is not equal to CompareValue, then Value is returned. \r
- The compare exchange operation must be performed using MP safe mechanisms.\r
-\r
- @param Value A pointer to the 64-bit value for the compare exchange\r
- operation.\r
- @param CompareValue 64-bit value used in compare operation.\r
- @param ExchangeValue 64-bit value used in exchange operation.\r
-\r
- @return The original *Value before exchange.\r
-\r
-**/\r
-UINT64\r
-EFIAPI\r
-InternalSyncCompareExchange64 (\r
- IN volatile UINT64 *Value,\r
- IN UINT64 CompareValue,\r
- IN UINT64 ExchangeValue\r
- );\r
-\r
/**\r
Retrieves the architecture specific spin lock alignment requirements for\r
optimal spin lock performance.\r
IN OUT SPIN_LOCK *SpinLock\r
)\r
{\r
+ volatile SPIN_LOCK LockValue;\r
+\r
ASSERT (SpinLock != NULL);\r
- ASSERT (*SpinLock == SPIN_LOCK_ACQUIRED || *SpinLock == SPIN_LOCK_RELEASED);\r
+\r
+ LockValue = *SpinLock;\r
+ ASSERT (LockValue == SPIN_LOCK_ACQUIRED || LockValue == SPIN_LOCK_RELEASED);\r
+\r
return (BOOLEAN)(\r
InterlockedCompareExchangePointer (\r
(VOID**)SpinLock,\r
IN OUT SPIN_LOCK *SpinLock\r
)\r
{\r
+ volatile SPIN_LOCK LockValue;\r
+\r
ASSERT (SpinLock != NULL);\r
- ASSERT (*SpinLock == SPIN_LOCK_ACQUIRED || *SpinLock == SPIN_LOCK_RELEASED);\r
+\r
+ LockValue = *SpinLock;\r
+ ASSERT (LockValue == SPIN_LOCK_ACQUIRED || LockValue == SPIN_LOCK_RELEASED);\r
+\r
*SpinLock = SPIN_LOCK_RELEASED;\r
return SpinLock;\r
}\r
IN VOID *ExchangeValue\r
)\r
{\r
- switch (sizeof (*Value)) {\r
+ UINT8 SizeOfValue;\r
+\r
+ SizeOfValue = sizeof (*Value);\r
+\r
+ switch (SizeOfValue) {\r
case sizeof (UINT32):\r
return (VOID*)(UINTN)InterlockedCompareExchange32 (\r
(UINT32*)Value,\r