projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| c8ec22a2 JY |
1 | #------------------------------------------------------------------------------\r |
| 2 | #\r | |
| d5fb1edf | 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 | |
| c8ec22a2 JY |
12 | \r |
| 13 | #------------------------------------------------------------------------------\r | |
| 14 | # UINT32\r | |
| 15 | # EFIAPI\r | |
| 16 | # Pei2LoaderSwitchStack (\r | |
| 17 | # VOID\r | |
| 18 | # )\r | |
| 19 | #------------------------------------------------------------------------------\r | |
| 20 | ASM_GLOBAL ASM_PFX(Pei2LoaderSwitchStack)\r | |
| 21 | ASM_PFX(Pei2LoaderSwitchStack):\r | |
| 3b17b245 MM |
22 | xorl %eax, %eax\r |
| 23 | jmp ASM_PFX(FspSwitchStack)\r | |
| c8ec22a2 JY |
24 | \r |
| 25 | #------------------------------------------------------------------------------\r | |
| 26 | # UINT32\r | |
| 27 | # EFIAPI\r | |
| 28 | # Loader2PeiSwitchStack (\r | |
| 3b17b245 | 29 | # VOID\r |
| c8ec22a2 JY |
30 | # )\r |
| 31 | #------------------------------------------------------------------------------\r | |
| 32 | ASM_GLOBAL ASM_PFX(Loader2PeiSwitchStack)\r | |
| 33 | ASM_PFX(Loader2PeiSwitchStack):\r | |
| 3b17b245 MM |
34 | jmp ASM_PFX(FspSwitchStack)\r |
| 35 | \r | |
| 36 | #------------------------------------------------------------------------------\r | |
| 37 | # UINT32\r | |
| 38 | # EFIAPI\r | |
| 39 | # FspSwitchStack (\r | |
| 40 | # VOID\r | |
| 41 | # )\r | |
| 42 | #------------------------------------------------------------------------------\r | |
| 43 | ASM_GLOBAL ASM_PFX(FspSwitchStack)\r | |
| 44 | ASM_PFX(FspSwitchStack):\r | |
| d5fb1edf JY |
45 | #\r |
| 46 | #Save current contexts\r | |
| 47 | #\r | |
| 3b17b245 | 48 | push %eax\r |
| c8ec22a2 | 49 | pushf\r |
| c8ec22a2 JY |
50 | cli\r |
| 51 | pusha\r | |
| d5fb1edf | 52 | sub $0x08, %esp\r |
| c8ec22a2 JY |
53 | sidt (%esp)\r |
| 54 | \r | |
| d5fb1edf | 55 | #\r |
| c8ec22a2 | 56 | # Load new stack\r |
| d5fb1edf | 57 | #\r |
| c8ec22a2 JY |
58 | push %esp\r |
| 59 | call ASM_PFX(SwapStack)\r | |
| d5fb1edf | 60 | movl %eax, %esp\r |
| c8ec22a2 | 61 | \r |
| d5fb1edf | 62 | #\r |
| c8ec22a2 | 63 | # Restore previous contexts\r |
| d5fb1edf | 64 | #\r |
| c8ec22a2 | 65 | lidt (%esp)\r |
| d5fb1edf | 66 | add $0x08,%esp\r |
| c8ec22a2 JY |
67 | popa\r |
| 68 | popf\r | |
| 3b17b245 | 69 | add $0x04,%esp\r |
| c8ec22a2 JY |
70 | ret\r |
| 71 | \r | |
| 72 | \r |