projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| cf1d4549 JY |
1 | /** @file\r |
| 2 | \r | |
| 3f89db86 | 3 | Copyright (c) 2014 - 2020, Intel Corporation. All rights reserved.<BR>\r |
| 9672cd30 | 4 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| cf1d4549 JY |
5 | \r |
| 6 | **/\r | |
| 7 | \r | |
| 8 | #ifndef _FSP_SWITCH_STACK_LIB_H_\r | |
| 9 | #define _FSP_SWITCH_STACK_LIB_H_\r | |
| 10 | \r | |
| 11 | /**\r | |
| 12 | \r | |
| 058dcbf2 | 13 | This function will switch the current stack to the previous saved stack.\r |
| cf1d4549 JY |
14 | Before calling the previous stack has to be set in FSP_GLOBAL_DATA.CoreStack.\r |
| 15 | EIP\r | |
| 16 | FLAGS 16 bit FLAGS 16 bit\r | |
| 17 | EDI\r | |
| 18 | ESI\r | |
| 19 | EBP\r | |
| 20 | ESP\r | |
| 21 | EBX\r | |
| 22 | EDX\r | |
| 23 | ECX\r | |
| 24 | EAX\r | |
| 25 | DWORD IDT base1\r | |
| 26 | StackPointer: DWORD IDT base2\r | |
| 27 | \r | |
| 28 | @return ReturnKey After switching to the saved stack,\r | |
| 29 | this value will be saved in eax before returning.\r | |
| 30 | \r | |
| 31 | \r | |
| 32 | **/\r | |
| 33 | UINT32\r | |
| 34 | EFIAPI\r | |
| 35 | Pei2LoaderSwitchStack (\r | |
| 36 | VOID\r | |
| 37 | );\r | |
| 38 | \r | |
| 3f89db86 CC |
39 | /**\r |
| 40 | \r | |
| 41 | This function is equivalent to Pei2LoaderSwitchStack () but just indicates\r | |
| 42 | the stack after switched is FSP stack.\r | |
| 43 | \r | |
| 44 | @return ReturnKey After switching to the saved stack,\r | |
| 45 | this value will be saved in eax before returning.\r | |
| 46 | \r | |
| 47 | \r | |
| 48 | **/\r | |
| 49 | UINT32\r | |
| 50 | EFIAPI\r | |
| 51 | Loader2PeiSwitchStack (\r | |
| 52 | VOID\r | |
| 53 | );\r | |
| 54 | \r | |
| cf1d4549 | 55 | #endif\r |