;----------------------------------------------------------------------------- | |
; | |
; Copyright (c) 2021, AMD. All rights reserved.<BR> | |
; SPDX-License-Identifier: BSD-2-Clause-Patent | |
; | |
;----------------------------------------------------------------------------- | |
%include "Nasm.inc" | |
SECTION .text | |
;----------------------------------------------------------------------------- | |
; UINT32 | |
; EFIAPI | |
; AsmPvalidate ( | |
; IN UINT32 PageSize | |
; IN UINT32 Validate, | |
; IN UINT64 Address | |
; ) | |
;----------------------------------------------------------------------------- | |
global ASM_PFX(AsmPvalidate) | |
ASM_PFX(AsmPvalidate): | |
mov rax, r8 | |
PVALIDATE | |
; Save the carry flag. | |
setc dl | |
; The PVALIDATE instruction returns the status in rax register. | |
cmp rax, 0 | |
jne PvalidateExit | |
; Check the carry flag to determine if RMP entry was updated. | |
cmp dl, 0 | |
je PvalidateExit | |
; Return the PVALIDATE_RET_NO_RMPUPDATE. | |
mov rax, 255 | |
PvalidateExit: | |
ret |