InterlockedCompareExchange32.c

Go to the documentation of this file.

 
UINT32
EFIAPI
InternalSyncCompareExchange32 (
  IN      volatile UINT32  *Value,
  IN      UINT32           CompareValue,
  IN      UINT32           ExchangeValue
  )
{
  _asm {
    mov     ecx, Value
    mov     eax, CompareValue
    mov     edx, ExchangeValue
    lock    cmpxchg [ecx], edx
  }
}