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;*************************************************************************
;*************************************************************************
;** **
;** (C)Copyright 1985-2009, American Megatrends, Inc. **
;** **
;** All Rights Reserved. **
;** **
;** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
;** **
;** Phone: (770)-246-8600 **
;** **
;*************************************************************************
;*************************************************************************
;*************************************************************************
; $Header: /Alaska/SOURCE/Core/Modules/x64Core/x64AsmLib/WaitForSemaphore.asm 1 10/01/10 5:08p Felixp $
;
; $Revision: 1 $
;
; $Date: 10/01/10 5:08p $
;*************************************************************************
; Revision History
; ----------------
; $Log: /Alaska/SOURCE/Core/Modules/x64Core/x64AsmLib/WaitForSemaphore.asm $
;
; 1 10/01/10 5:08p Felixp
;
; 1 8/24/06 12:57p Felixp
;
;*************************************************************************
;<AMI_FHDR_START>
;
; Name:
;
; Description:
;
;<AMI_FHDR_END>
;*************************************************************************
.code
;*************************************************************************
;<AMI_PHDR_START>
;
; Name: WaitForSemaphore
;
; Description:
; VOID WaitForSemaphore(IN volatile UINT8 *Semaphore) waits for the
; semaphore to become available; once available, it claims the semaphore and
; returns.
;
; Input:
; IN volatile UINT8 *Semaphore
; Pointer to the desired semaphore.
;
; Output:
; VOID.
;
; Modified:
;
; Referrals:
;
; Notes:
;
;<AMI_PHDR_END>
;*************************************************************************
WaitForSemaphore Proc
mov al, 1
@@:
xchg al, [rcx]
or al, al
pause
jnz @b
ret
WaitForSemaphore endp
END
;*************************************************************************
;*************************************************************************
;** **
;** (C)Copyright 1985-2009, American Megatrends, Inc. **
;** **
;** All Rights Reserved. **
;** **
;** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
;** **
;** Phone: (770)-246-8600 **
;** **
;*************************************************************************
|
