projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| fab82c18 JJ |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| 3 | ; Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>\r | |
| 4 | ; 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 | ;------------------------------------------------------------------------------\r | |
| 13 | \r | |
| 14 | #include <Base.h>\r | |
| 15 | \r | |
| 16 | extern ASM_PFX(mTopOfApCommonStack):QWORD\r | |
| 17 | extern ASM_PFX(ApEntryPointInC):PROC\r | |
| 18 | \r | |
| 19 | .data\r | |
| 20 | \r | |
| 21 | ;\r | |
| 22 | ; This lock only allows one AP to use the mTopOfApCommonStack stack at a time\r | |
| 23 | ;\r | |
| 24 | ApStackLock:\r | |
| 25 | dd 0\r | |
| 26 | \r | |
| 27 | .code\r | |
| 28 | \r | |
| 29 | ;------------------------------------------------------------------------------\r | |
| 30 | ; VOID\r | |
| 31 | ; EFIAPI\r | |
| 32 | ; AsmApEntryPoint (\r | |
| 33 | ; VOID\r | |
| 34 | ; );\r | |
| 35 | ;------------------------------------------------------------------------------\r | |
| 36 | ASM_PFX(AsmApEntryPoint) PROC PUBLIC\r | |
| 37 | \r | |
| 38 | cli\r | |
| 39 | AsmApEntryPointAcquireLock:\r | |
| 40 | lock bts dword ptr [ApStackLock], 0\r | |
| 41 | pause\r | |
| 42 | jc AsmApEntryPointAcquireLock\r | |
| 43 | \r | |
| 44 | mov rsp, [ASM_PFX(mTopOfApCommonStack)]\r | |
| 45 | call ASM_PFX(ApEntryPointInC)\r | |
| 46 | \r | |
| 47 | cli\r | |
| 48 | \r | |
| 49 | lock btc dword ptr [ApStackLock], 0\r | |
| 50 | \r | |
| 51 | mov eax, 100h\r | |
| 52 | AsmApEntryPointShareLock:\r | |
| 53 | pause\r | |
| 54 | dec eax\r | |
| 55 | jnz AsmApEntryPointShareLock\r | |
| 56 | \r | |
| 57 | jmp ASM_PFX(AsmApEntryPoint)\r | |
| 58 | \r | |
| 59 | ASM_PFX(AsmApEntryPoint) ENDP\r | |
| 60 | \r | |
| 61 | ;------------------------------------------------------------------------------\r | |
| 62 | ; VOID\r | |
| 63 | ; EFIAPI\r | |
| 64 | ; AsmApDoneWithCommonStack (\r | |
| 65 | ; VOID\r | |
| 66 | ; );\r | |
| 67 | ;------------------------------------------------------------------------------\r | |
| 68 | ASM_PFX(AsmApDoneWithCommonStack) PROC PUBLIC\r | |
| 69 | \r | |
| 70 | lock btc dword ptr [ApStackLock], 0\r | |
| 71 | ret\r | |
| 72 | \r | |
| 73 | ASM_PFX(AsmApDoneWithCommonStack) ENDP\r | |
| 74 | \r | |
| 75 | END\r | |
| 76 | \r |