878ddf1f |
1 | #------------------------------------------------------------------------------\r |
2 | #\r |
3 | # Copyright (c) 2006, Intel Corporation\r |
4 | # All rights reserved. This program and the accompanying materials\r |
5 | # are licensed and made available under the terms and conditions of the BSD License\r |
6 | # which accompanies this distribution. The full text of the license may be found at\r |
7 | # http://opensource.org/licenses/bsd-license.php\r |
8 | #\r |
9 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
10 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
11 | #\r |
12 | # Module Name:\r |
13 | #\r |
14 | # DisablePaging32.Asm\r |
15 | #\r |
16 | # Abstract:\r |
17 | #\r |
18 | # AsmDisablePaging32 function\r |
19 | #\r |
20 | # Notes:\r |
21 | #\r |
22 | #------------------------------------------------------------------------------\r |
23 | \r |
24 | \r |
25 | \r |
26 | \r |
27 | \r |
28 | #------------------------------------------------------------------------------\r |
29 | # VOID\r |
30 | # EFIAPI\r |
31 | # AsmDisablePaging32 (\r |
32 | # IN SWITCH_STACK_ENTRY_POINT EntryPoint,\r |
33 | # IN VOID *Context1, OPTIONAL\r |
34 | # IN VOID *Context2, OPTIONAL\r |
35 | # IN VOID *NewStack\r |
36 | # );\r |
37 | #------------------------------------------------------------------------------\r |
38 | .global _AsmDisablePaging32\r |
39 | _AsmDisablePaging32: \r |
40 | movl 4(%esp),%ebx\r |
41 | movl 8(%esp),%ecx\r |
42 | movl 12(%esp),%edx\r |
43 | pushfl\r |
44 | popl %edi\r |
45 | cli\r |
46 | movl %cr0, %eax\r |
47 | btrl $31,%eax\r |
48 | movl 16(%esp),%esp\r |
49 | movl %eax, %cr0\r |
50 | pushl %edi\r |
51 | popfl\r |
52 | pushl %edx\r |
53 | pushl %ecx\r |
54 | call *%ebx\r |
55 | jmp .\r |
56 | \r |
57 | \r |
58 | \r |