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;------------------------------------------------------------------------------
;
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
;
; SetMem32.nasm
;
; Abstract:
;
; SetMem32 function
;
; Notes:
;
;------------------------------------------------------------------------------
SECTION .text
;------------------------------------------------------------------------------
; VOID *
; EFIAPI
; InternalMemSetMem32 (
; IN VOID *Buffer,
; IN UINTN Count,
; IN UINT32 Value
; );
;------------------------------------------------------------------------------
global ASM_PFX(InternalMemSetMem32)
ASM_PFX(InternalMemSetMem32):
mov eax, [esp + 4] ; eax <- Buffer as return value
mov ecx, [esp + 8] ; ecx <- Count
movd mm0, dword [esp + 12] ; mm0 <- Value
shr ecx, 1 ; ecx <- number of qwords to set
mov edx, eax ; edx <- Buffer
jz @SetDwords
movq mm1, mm0
psllq mm1, 32
por mm0, mm1
.0:
movq qword [edx], mm0
lea edx, [edx + 8] ; use "lea" to avoid change in flags
loop .0
@SetDwords:
jnc .1
movd dword [edx], mm0
.1:
ret
|
