CpuAsm.nasm@ 109019

Last change on this file since 109019 was 99404, checked in by vboxsync, 2 years ago
Devices/EFI/FirmwareNew: Update to edk2-stable202302 and make it build, bugref:4643
Property svn:eol-style set to `native` Property svn:mime-type set to `text/x-asm`
File size: 1.2 KB

Line
1	;------------------------------------------------------------------------------
2	;*
3	;* Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
4	;* SPDX-License-Identifier: BSD-2-Clause-Patent
5	;*
6	;* CpuAsm.nasm
7	;*
8	;* Abstract:
9	;*
10	;------------------------------------------------------------------------------
11
12	SECTION .text
13
14	;------------------------------------------------------------------------------
15	; VOID
16	; SetCodeSelector (
17	; UINT16 Selector
18	; );
19	;------------------------------------------------------------------------------
20	global ASM_PFX(SetCodeSelector)
21	ASM_PFX(SetCodeSelector):
22	mov ecx, [esp+4]
23	sub esp, 0x10
24	lea eax, [setCodeSelectorLongJump]
25	mov [esp], eax
26	mov [esp+4], cx
27	jmp dword far [esp]
28	setCodeSelectorLongJump:
29	add esp, 0x10
30	ret
31
32	;------------------------------------------------------------------------------
33	; VOID
34	; SetDataSelectors (
35	; UINT16 Selector
36	; );
37	;------------------------------------------------------------------------------
38	global ASM_PFX(SetDataSelectors)
39	ASM_PFX(SetDataSelectors):
40	mov ecx, [esp+4]
41	o16 mov ss, cx
42	o16 mov ds, cx
43	o16 mov es, cx
44	o16 mov fs, cx
45	o16 mov gs, cx
46	ret
47

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