projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 9095d37b | 1 | ;------------------------------------------------------------------------------\r |
| ebd04fc2 | 2 | ;\r |
| 9095d37b | 3 | ; Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r |
| bb817c56 HT |
4 | ; Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r |
| 5 | ; This program and the accompanying materials\r | |
| ebd04fc2 | 6 | ; are licensed and made available under the terms and conditions of the BSD License\r |
| 7 | ; which accompanies this distribution. The full text of the license may be found at\r | |
| 35a17154 | 8 | ; http://opensource.org/licenses/bsd-license.php.\r |
| ebd04fc2 | 9 | ;\r |
| 10 | ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 11 | ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 12 | ;\r | |
| 13 | ;------------------------------------------------------------------------------\r | |
| 14 | \r | |
| 01a54966 | 15 | EXPORT SetJump\r |
| 16 | EXPORT InternalLongJump\r | |
| ebd04fc2 | 17 | \r |
| 01a54966 | 18 | AREA BaseLib, CODE, READONLY\r |
| ebd04fc2 | 19 | \r |
| 20 | ;/**\r | |
| 21 | ; Saves the current CPU context that can be restored with a call to LongJump() and returns 0.;\r | |
| 22 | ;\r | |
| 23 | ; Saves the current CPU context in the buffer specified by JumpBuffer and returns 0. The initial\r | |
| 24 | ; call to SetJump() must always return 0. Subsequent calls to LongJump() cause a non-zero\r | |
| 25 | ; value to be returned by SetJump().\r | |
| 26 | ;\r | |
| 27 | ; If JumpBuffer is NULL, then ASSERT().\r | |
| 28 | ; For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().\r | |
| 29 | ;\r | |
| 30 | ; @param JumpBuffer A pointer to CPU context buffer.\r | |
| 31 | ;\r | |
| 32 | ;**/\r | |
| 33 | ;\r | |
| 34 | ;UINTN\r | |
| 35 | ;EFIAPI\r | |
| 36 | ;SetJump (\r | |
| 37 | ; IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer // R0\r | |
| 38 | ; )\r | |
| 39 | ;\r | |
| 40 | SetJump\r | |
| 41 | MOV R3, R13\r | |
| 42 | STM R0, {R3-R12,R14}\r | |
| 43 | EOR R0, R0\r | |
| 44 | BX LR\r | |
| 45 | \r | |
| 46 | ;/**\r | |
| 47 | ; Restores the CPU context that was saved with SetJump().;\r | |
| 48 | ;\r | |
| 49 | ; Restores the CPU context from the buffer specified by JumpBuffer.\r | |
| 50 | ; This function never returns to the caller.\r | |
| 51 | ; Instead is resumes execution based on the state of JumpBuffer.\r | |
| 52 | ;\r | |
| 53 | ; @param JumpBuffer A pointer to CPU context buffer.\r | |
| 54 | ; @param Value The value to return when the SetJump() context is restored.\r | |
| 55 | ;\r | |
| 56 | ;**/\r | |
| 57 | ;VOID\r | |
| 58 | ;EFIAPI\r | |
| 59 | ;InternalLongJump (\r | |
| 60 | ; IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer, // R0\r | |
| 61 | ; IN UINTN Value // R1\r | |
| 62 | ; );\r | |
| 63 | ;\r | |
| 64 | InternalLongJump\r | |
| 65 | LDM R0, {R3-R12,R14}\r | |
| 66 | MOV R13, R3\r | |
| 67 | MOV R0, R1\r | |
| 68 | BX LR\r | |
| 69 | \r | |
| 70 | END\r |