diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/X64/InterlockedDecrement.c')
| -rw-r--r-- | MdePkg/Library/BaseLib/X64/InterlockedDecrement.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/MdePkg/Library/BaseLib/X64/InterlockedDecrement.c b/MdePkg/Library/BaseLib/X64/InterlockedDecrement.c index 19e6a5dc49..0f321f8f18 100644 --- a/MdePkg/Library/BaseLib/X64/InterlockedDecrement.c +++ b/MdePkg/Library/BaseLib/X64/InterlockedDecrement.c @@ -12,15 +12,28 @@ **/
-//
-// Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics
-//
+/**
+ Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.
+**/
long _InterlockedDecrement(
long * lpAddend
);
#pragma intrinsic(_InterlockedDecrement)
+/**
+ Performs an atomic decrement of an 32-bit unsigned integer.
+
+ Performs an atomic decrement of the 32-bit unsigned integer specified by
+ Value and returns the decrement value. The decrement operation must be
+ performed using MP safe mechanisms. The state of the return value is not
+ guaranteed to be MP safe.
+
+ @param Value A pointer to the 32-bit value to decrement.
+
+ @return The decrement value.
+
+**/
UINT32
EFIAPI
InternalSyncDecrement (
|