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ebd04fc2 | 1 | ;------------------------------------------------------------------------------ \r |
2 | ;\r | |
bb817c56 HT |
3 | ; Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>\r |
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 | |
8 | ; http://opensource.org/licenses/bsd-license.php\r | |
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 |