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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 | # EnablePaging32.Asm\r | |
15 | #\r | |
16 | # Abstract:\r | |
17 | #\r | |
bd0cd44b | 18 | # InternalX86EnablePaging32 function\r |
878ddf1f | 19 | #\r |
20 | # Notes:\r | |
21 | #\r | |
22 | #------------------------------------------------------------------------------\r | |
23 | \r | |
a2b1bf96 | 24 | .globl ASM_PFX(InternalX86EnablePaging32)\r |
878ddf1f | 25 | \r |
26 | #------------------------------------------------------------------------------\r | |
27 | # VOID\r | |
28 | # EFIAPI\r | |
bd0cd44b | 29 | # InternalX86EnablePaging32 (\r |
878ddf1f | 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 | |
a2b1bf96 | 36 | ASM_PFX(InternalX86EnablePaging32):\r |
3f566587 | 37 | movl 4(%esp), %ebx\r |
38 | movl 8(%esp), %ecx\r | |
39 | movl 12(%esp), %edx\r | |
878ddf1f | 40 | pushfl\r |
3f566587 | 41 | pop %edi\r |
878ddf1f | 42 | cli\r |
43 | movl %cr0, %eax\r | |
3f566587 | 44 | btsl $31, %eax\r |
45 | movl 16(%esp), %esp\r | |
878ddf1f | 46 | movl %eax, %cr0\r |
3f566587 | 47 | push %edi\r |
878ddf1f | 48 | popfl\r |
3f566587 | 49 | push %edx\r |
50 | push %ecx\r | |
878ddf1f | 51 | call *%ebx\r |
52 | jmp .\r |