1 ;------------------------------------------------------------------------------ 2 ;* 3 ;* Copyright (c) 2016, Intel Corporation. All rights reserved.<BR> 4 ;* This program and the accompanying materials 5 ;* are licensed and made available under the terms and conditions of the BSD License 6 ;* which accompanies this distribution. The full text of the license may be found at 7 ;* http://opensource.org/licenses/bsd-license.php 8 ;* 9 ;* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10 ;* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11 ;* 12 ;* CpuAsm.nasm 13 ;* 14 ;* Abstract: 15 ;* 16 ;------------------------------------------------------------------------------ 17 18 DEFAULT REL 19 SECTION .text 20 21 ;------------------------------------------------------------------------------ 22 ; VOID 23 ; SetCodeSelector ( 24 ; UINT16 Selector 25 ; ); 26 ;------------------------------------------------------------------------------ 27 global ASM_PFX(SetCodeSelector) 28 ASM_PFX(SetCodeSelector): 29 sub rsp, 0x10 30 lea rax, [setCodeSelectorLongJump] 31 mov [rsp], rax 32 mov [rsp+4], cx 33 jmp dword far [rsp] 34 setCodeSelectorLongJump: 35 add rsp, 0x10 36 ret 37 38 ;------------------------------------------------------------------------------ 39 ; VOID 40 ; SetDataSelectors ( 41 ; UINT16 Selector 42 ; ); 43 ;------------------------------------------------------------------------------ 44 global ASM_PFX(SetDataSelectors) 45 ASM_PFX(SetDataSelectors): 46 o16 mov ss, cx 47 o16 mov ds, cx 48 o16 mov es, cx 49 o16 mov fs, cx 50 o16 mov gs, cx 51 ret 52 53
