projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| c8ec22a2 JY |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| 3b17b245 | 3 | ; Copyright (c) 2014 - 2015, Intel Corporation. All rights reserved.<BR>\r |
| 16a16ea6 | 4 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| c8ec22a2 JY |
5 | ;\r |
| 6 | ; Abstract:\r | |
| 7 | ;\r | |
| 8 | ; Switch the stack from temporary memory to permenent memory.\r | |
| 9 | ;\r | |
| 10 | ;------------------------------------------------------------------------------\r | |
| 11 | \r | |
| 12 | .586p\r | |
| 13 | .model flat,C\r | |
| 14 | .code\r | |
| 15 | \r | |
| 16 | ;------------------------------------------------------------------------------\r | |
| 17 | ; UINT32\r | |
| 18 | ; EFIAPI\r | |
| 19 | ; Pei2LoaderSwitchStack (\r | |
| 20 | ; VOID\r | |
| 21 | ; )\r | |
| 22 | ;------------------------------------------------------------------------------\r | |
| 23 | EXTERNDEF C MeasurePoint:PROC\r | |
| 24 | Pei2LoaderSwitchStack PROC C PUBLIC\r | |
| 3b17b245 MM |
25 | xor eax, eax\r |
| 26 | jmp FspSwitchStack\r | |
| c8ec22a2 JY |
27 | Pei2LoaderSwitchStack ENDP\r |
| 28 | \r | |
| 29 | ;------------------------------------------------------------------------------\r | |
| 30 | ; UINT32\r | |
| 31 | ; EFIAPI\r | |
| 32 | ; Loader2PeiSwitchStack (\r | |
| 33 | ; VOID\r | |
| 34 | ; )\r | |
| 35 | ;------------------------------------------------------------------------------\r | |
| c8ec22a2 | 36 | Loader2PeiSwitchStack PROC C PUBLIC\r |
| 3b17b245 MM |
37 | jmp FspSwitchStack\r |
| 38 | Loader2PeiSwitchStack ENDP\r | |
| 39 | \r | |
| 40 | ;------------------------------------------------------------------------------\r | |
| 41 | ; UINT32\r | |
| 42 | ; EFIAPI\r | |
| 43 | ; FspSwitchStack (\r | |
| 44 | ; VOID\r | |
| 45 | ; )\r | |
| 46 | ;------------------------------------------------------------------------------\r | |
| 47 | EXTERNDEF C SwapStack:PROC\r | |
| 48 | FspSwitchStack PROC C PUBLIC\r | |
| c8ec22a2 | 49 | ; Save current contexts\r |
| 3b17b245 | 50 | push eax\r |
| c8ec22a2 JY |
51 | pushfd\r |
| 52 | cli\r | |
| 53 | pushad\r | |
| 54 | sub esp, 8\r | |
| 55 | sidt fword ptr [esp]\r | |
| 56 | \r | |
| 57 | ; Load new stack\r | |
| 58 | push esp\r | |
| 59 | call SwapStack\r | |
| 60 | mov esp, eax\r | |
| 61 | \r | |
| 62 | ; Restore previous contexts\r | |
| 63 | lidt fword ptr [esp]\r | |
| 64 | add esp, 8\r | |
| 65 | popad\r | |
| 66 | popfd\r | |
| 3b17b245 | 67 | add esp, 4\r |
| c8ec22a2 | 68 | ret\r |
| 3b17b245 | 69 | FspSwitchStack ENDP\r |
| c8ec22a2 JY |
70 | \r |
| 71 | END\r |