]>
Commit | Line | Data |
---|---|---|
f9d30595 JF |
1 | ;------------------------------------------------------------------------------ ; |
2 | ; Copyright (c) 2015, Intel Corporation. All rights reserved.<BR> | |
3 | ; This program and the accompanying materials | |
4 | ; are licensed and made available under the terms and conditions of the BSD License | |
5 | ; which accompanies this distribution. The full text of the license may be found at | |
6 | ; http://opensource.org/licenses/bsd-license.php. | |
7 | ; | |
8 | ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
9 | ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
10 | ; | |
11 | ; Module Name: | |
12 | ; | |
13 | ; MpFuncs32.asm | |
14 | ; | |
15 | ; Abstract: | |
16 | ; | |
17 | ; This is the assembly code for MP support | |
18 | ; | |
19 | ;------------------------------------------------------------------------------- | |
20 | ||
21 | include MpEqu.inc | |
22 | .code | |
23 | ||
24 | ||
25 | AsmInitializeGdt PROC | |
26 | push rbp | |
27 | mov rbp, rsp | |
28 | ||
29 | lgdt fword PTR [rcx] ; update the GDTR | |
30 | ||
31 | sub rsp, 0x10 | |
32 | lea rax, SetCodeSelectorFarJump | |
33 | mov [rsp], rax | |
34 | mov rdx, LONG_MODE_CS | |
35 | mov [rsp + 4], dx ; get new CS | |
36 | jmp fword ptr [rsp] | |
37 | SetCodeSelectorFarJump: | |
38 | add rsp, 0x10 | |
39 | ||
40 | mov rax, LONG_MODE_DS ; get new DS | |
41 | mov ds, ax | |
42 | mov es, ax | |
43 | mov fs, ax | |
44 | mov gs, ax | |
45 | mov ss, ax | |
46 | ||
47 | pop rbp | |
48 | ret | |
49 | AsmInitializeGdt ENDP | |
50 | ||
51 | END |