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e1f414b6 | 1 | /** @file\r |
2 | Non-existing BaseLib functions on Ia32\r | |
3 | \r | |
bb817c56 | 4 | Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r |
9344f092 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
e1f414b6 | 6 | \r |
e1f414b6 | 7 | **/\r |
8 | \r | |
83584954 | 9 | #include <Library/DebugLib.h>\r |
e1f414b6 | 10 | \r |
11 | /**\r | |
12 | Disables the 64-bit paging mode on the CPU.\r | |
13 | \r | |
14 | Disables the 64-bit paging mode on the CPU and returns to 32-bit protected\r | |
15 | mode. This function assumes the current execution mode is 64-paging mode.\r | |
030cd1a2 | 16 | This function is only available on x64. After the 64-bit paging mode is\r |
e1f414b6 | 17 | disabled, control is transferred to the function specified by EntryPoint\r |
18 | using the new stack specified by NewStack and passing in the parameters\r | |
19 | specified by Context1 and Context2. Context1 and Context2 are optional and\r | |
20 | may be 0. The function EntryPoint must never return.\r | |
21 | \r | |
2a254b90 | 22 | @param CodeSelector The 16-bit selector to load in the CS before EntryPoint\r |
23 | is called. The descriptor in the GDT that this selector\r | |
24 | references must be setup for 32-bit protected mode.\r | |
83584954 | 25 | @param EntryPoint The 64-bit virtual address of the function to call with\r |
26 | the new stack after paging is disabled.\r | |
27 | @param Context1 The 64-bit virtual address of the context to pass into\r | |
28 | the EntryPoint function as the first parameter after\r | |
29 | paging is disabled.\r | |
30 | @param Context2 The 64-bit virtual address of the context to pass into\r | |
31 | the EntryPoint function as the second parameter after\r | |
32 | paging is disabled.\r | |
33 | @param NewStack The 64-bit virtual address of the new stack to use for\r | |
34 | the EntryPoint function after paging is disabled.\r | |
e1f414b6 | 35 | \r |
36 | **/\r | |
37 | VOID\r | |
38 | EFIAPI\r | |
39 | InternalX86DisablePaging64 (\r | |
2f88bd3a MK |
40 | IN UINT16 CodeSelector,\r |
41 | IN UINT32 EntryPoint,\r | |
42 | IN UINT32 Context1 OPTIONAL,\r | |
43 | IN UINT32 Context2 OPTIONAL,\r | |
44 | IN UINT32 NewStack\r | |
e1f414b6 | 45 | )\r |
46 | {\r | |
47 | //\r | |
48 | // This function cannot work on IA32 platform\r | |
49 | //\r | |
50 | ASSERT (FALSE);\r | |
51 | }\r |