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;-----------------------------------------------------------------------------
;
; 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
|
