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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 |
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18 | # InternalX86DisablePaging32 function\r |
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19 | #\r |
20 | # Notes:\r |
21 | #\r |
22 | #------------------------------------------------------------------------------\r |
23 | \r |
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24 | .globl _InternalX86DisablePaging32\r |
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25 | \r |
26 | #------------------------------------------------------------------------------\r |
27 | # VOID\r |
28 | # EFIAPI\r |
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29 | # InternalX86DisablePaging32 (\r |
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30 | # IN SWITCH_STACK_ENTRY_POINT EntryPoint,\r |
31 | # IN VOID *Context1, OPTIONAL\r |
32 | # IN VOID *Context2, OPTIONAL\r |
33 | # IN VOID *NewStack\r |
34 | # );\r |
35 | #------------------------------------------------------------------------------\r |
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36 | _InternalX86DisablePaging32:\r |
37 | movl 4(%esp), %ebx\r |
38 | movl 8(%esp), %ecx\r |
39 | movl 12(%esp), %edx\r |
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40 | pushfl\r |
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41 | pop %edi\r |
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42 | cli\r |
43 | movl %cr0, %eax\r |
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44 | btrl $31, %eax\r |
45 | movl 16(%esp), %esp\r |
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46 | movl %eax, %cr0\r |
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47 | push %edi\r |
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48 | popfl\r |
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49 | push %edx\r |
50 | push %ecx\r |
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51 | call *%ebx\r |
52 | jmp .\r |