| ;------------------------------------------------------------------------------ | |
| ; | |
| ; Copyright (c) 2006 - 2008, 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.Asm | |
| ; | |
| ; Abstract: | |
| ; | |
| ; SetMem function | |
| ; | |
| ; Notes: | |
| ; | |
| ;------------------------------------------------------------------------------ | |
| DEFAULT REL | |
| SECTION .text | |
| ;------------------------------------------------------------------------------ | |
| ; VOID * | |
| ; EFIAPI | |
| ; InternalMemSetMem ( | |
| ; IN VOID *Buffer, | |
| ; IN UINTN Count, | |
| ; IN UINT8 Value | |
| ; ) | |
| ;------------------------------------------------------------------------------ | |
| global ASM_PFX(InternalMemSetMem) | |
| ASM_PFX(InternalMemSetMem): | |
| push rdi | |
| push rbx | |
| push rcx ; push Buffer | |
| mov rax, r8 ; rax = Value | |
| and rax, 0xff ; rax = lower 8 bits of r8, upper 56 bits are 0 | |
| mov ah, al ; ah = al | |
| mov bx, ax ; bx = ax | |
| shl rax, 0x10 ; rax = ax << 16 | |
| mov ax, bx ; ax = bx | |
| mov rbx, rax ; ebx = eax | |
| shl rax, 0x20 ; rax = rax << 32 | |
| or rax, rbx ; eax = ebx | |
| mov rdi, rcx ; rdi = Buffer | |
| mov rcx, rdx ; rcx = Count | |
| shr rcx, 3 ; rcx = rcx / 8 | |
| cld | |
| rep stosq | |
| mov rcx, rdx ; rcx = rdx | |
| and rcx, 7 ; rcx = rcx & 7 | |
| rep stosb | |
| pop rax ; rax = Buffer | |
| pop rbx | |
| pop rdi | |
| ret | |