audk/UefiCpuPkg/CpuDxe/X64/CpuAsm.asm

55 lines
1.8 KiB
NASM

TITLE CpuAsm.asm:
;------------------------------------------------------------------------------
;*
;* Copyright (c) 2008 - 2013, 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.
;*
;* CpuAsm.asm
;*
;* Abstract:
;*
;------------------------------------------------------------------------------
.code
;------------------------------------------------------------------------------
; VOID
; SetCodeSelector (
; UINT16 Selector
; );
;------------------------------------------------------------------------------
SetCodeSelector PROC PUBLIC
sub rsp, 0x10
lea rax, setCodeSelectorLongJump
mov [rsp], rax
mov [rsp+4], cx
jmp fword ptr [rsp]
setCodeSelectorLongJump:
add rsp, 0x10
ret
SetCodeSelector ENDP
;------------------------------------------------------------------------------
; VOID
; SetDataSelectors (
; UINT16 Selector
; );
;------------------------------------------------------------------------------
SetDataSelectors PROC PUBLIC
mov ss, cx
mov ds, cx
mov es, cx
mov fs, cx
mov gs, cx
ret
SetDataSelectors ENDP
END