mirror of https://github.com/acidanthera/audk.git
69 lines
2.1 KiB
NASM
69 lines
2.1 KiB
NASM
;------------------------------------------------------------------------------
|
|
;
|
|
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
|
|
; This program and the accompanying materials
|
|
; are licensed and made available under the terms and conditions of the BSD License
|
|
; which accompanies this distribution. The full text of the license may be found at
|
|
; http://opensource.org/licenses/bsd-license.php.
|
|
;
|
|
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
;
|
|
; Module Name:
|
|
;
|
|
; SetMem.nasm
|
|
;
|
|
; Abstract:
|
|
;
|
|
; SetMem function
|
|
;
|
|
; Notes:
|
|
;
|
|
;------------------------------------------------------------------------------
|
|
|
|
SECTION .text
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID *
|
|
; EFIAPI
|
|
; InternalMemSetMem (
|
|
; IN VOID *Buffer,
|
|
; IN UINTN Count,
|
|
; IN UINT8 Value
|
|
; )
|
|
;------------------------------------------------------------------------------
|
|
global ASM_PFX(InternalMemSetMem)
|
|
ASM_PFX(InternalMemSetMem):
|
|
push edi
|
|
mov al, [esp + 16]
|
|
mov ah, al
|
|
shrd edx, eax, 16
|
|
shld eax, edx, 16
|
|
mov ecx, [esp + 12] ; ecx <- Count
|
|
mov edi, [esp + 8] ; edi <- Buffer
|
|
mov edx, ecx
|
|
and edx, 7
|
|
shr ecx, 3 ; # of Qwords to set
|
|
jz @SetBytes
|
|
add esp, -0x10
|
|
movq [esp], mm0 ; save mm0
|
|
movq [esp + 8], mm1 ; save mm1
|
|
movd mm0, eax
|
|
movd mm1, eax
|
|
psllq mm0, 32
|
|
por mm0, mm1 ; fill mm0 with 8 Value's
|
|
.0:
|
|
movq [edi], mm0
|
|
add edi, 8
|
|
loop .0
|
|
movq mm0, [esp] ; restore mm0
|
|
movq mm1, [esp + 8] ; restore mm1
|
|
add esp, 0x10 ; stack cleanup
|
|
@SetBytes:
|
|
mov ecx, edx
|
|
rep stosb
|
|
mov eax, [esp + 8] ; eax <- Buffer as return value
|
|
pop edi
|
|
ret
|
|
|