]>
Commit | Line | Data |
---|---|---|
f1baef62 | 1 | #------------------------------------------------------------------------------ |
2 | # | |
3 | # Copyright (c) 2006, Intel Corporation | |
4 | # All rights reserved. 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 | # Module Name: | |
13 | # | |
14 | # DisablePaging64.S | |
15 | # | |
16 | # Abstract: | |
17 | # | |
18 | # AsmDisablePaging64 function | |
19 | # | |
20 | # Notes: | |
21 | # | |
22 | #------------------------------------------------------------------------------ | |
23 | ||
24 | ||
25 | ||
26 | #------------------------------------------------------------------------------ | |
27 | # VOID | |
28 | # EFIAPI | |
29 | # InternalX86DisablePaging64 ( | |
30 | # IN UINT16 Cs, %rdi | |
31 | # IN UINT64 EntryPoint, %rsi | |
32 | # IN UINT64 Context1, OPTIONAL %rdx | |
33 | # IN UINT32 Context2, OPTIONAL %rcx | |
34 | # IN UINT64 NewStack %r8 | |
35 | # ); | |
36 | #------------------------------------------------------------------------------ | |
37 | ||
38 | .global _InternalX86DisablePaging64 | |
39 | _InternalX86DisablePaging64: | |
40 | cli | |
41 | shl $0x20,%rcx | |
42 | lea (%rip), %eax | |
43 | mov %eax,%ecx | |
44 | push %rcx | |
45 | mov %edx,%ebx | |
46 | mov %r8d,%esi | |
47 | mov %r9d,%edi | |
48 | mov 0x28(%rsp),%eax | |
49 | lret | |
50 | L1: | |
51 | mov %eax,%esp | |
52 | mov %cr0,%rax | |
53 | btr $0x1f,%eax | |
54 | mov %rax,%cr0 | |
55 | mov $0xc0000080,%ecx | |
56 | rdmsr | |
57 | and $0xfe,%ah | |
58 | wrmsr | |
59 | mov %cr4,%rax | |
60 | and $0xdf,%al | |
61 | mov %rax,%cr4 | |
62 | push %rdi | |
63 | push %rsi | |
64 | callq *%rbx | |
65 | jmp . | |
66 |