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cd872e40 | 1 | // |
2 | // Copyright (c) 2011, ARM Limited. All rights reserved. | |
3 | // | |
4 | // This program and the accompanying materials | |
5 | // are licensed and made available under the terms and conditions of the BSD License | |
6 | // which accompanies this distribution. The full text of the license may be found at | |
7 | // http://opensource.org/licenses/bsd-license.php | |
8 | // | |
9 | // THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
10 | // WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
11 | // | |
12 | // | |
13 | ||
14 | #include <AsmMacroIoLib.h> | |
15 | #include <Base.h> | |
16 | #include <AutoGen.h> | |
17 | ||
18 | IMPORT PrePiCommonExceptionEntry | |
19 | EXPORT PrePiVectorTable | |
20 | ||
21 | PRESERVE8 | |
22 | AREA PrePeiCoreException, CODE, READONLY, CODEALIGN, ALIGN=5 | |
23 | ||
24 | //============================================================ | |
25 | //Default Exception Handlers | |
26 | //============================================================ | |
27 | //TODO: there should be better way to handle the exceptions during the early stage. At the moment they are spinning in infinite loop | |
28 | ||
29 | PrePiVectorTable | |
30 | b _DefaultResetHandler | |
31 | b _DefaultUndefined | |
32 | b _DefaultSWI | |
33 | b _DefaultPrefetchAbort | |
34 | b _DefaultDataAbort | |
35 | b _DefaultReserved | |
36 | b _DefaultIrq | |
37 | b _DefaultFiq | |
38 | ||
39 | // | |
40 | // Default Exception handlers: There is no plan to return from any of these exceptions. | |
41 | // No context saving at all. | |
42 | // | |
43 | _DefaultResetHandler | |
44 | mov r1, lr | |
45 | cps #0x13 ; Switch to SVC for common stack | |
46 | mov r0, #0 | |
47 | blx PrePiCommonExceptionEntry | |
48 | ||
49 | _DefaultUndefined | |
50 | sub r1, LR, #4 | |
51 | cps #0x13 ; Switch to SVC for common stack | |
52 | mov r0, #1 | |
53 | blx PrePiCommonExceptionEntry | |
54 | ||
55 | _DefaultSWI | |
56 | sub r1, LR, #4 | |
57 | cps #0x13 ; Switch to SVC for common stack | |
58 | mov r0, #2 | |
59 | blx PrePiCommonExceptionEntry | |
60 | ||
61 | _DefaultPrefetchAbort | |
62 | sub r1, LR, #4 | |
63 | cps #0x13 ; Switch to SVC for common stack | |
64 | mov r0, #3 | |
65 | blx PrePiCommonExceptionEntry | |
66 | ||
67 | _DefaultDataAbort | |
68 | sub r1, LR, #8 | |
69 | cps #0x13 ; Switch to SVC for common stack | |
70 | mov r0, #4 | |
71 | blx PrePiCommonExceptionEntry | |
72 | ||
73 | _DefaultReserved | |
74 | mov r1, lr | |
75 | cps #0x13 ; Switch to SVC for common stack | |
76 | mov r0, #5 | |
77 | blx PrePiCommonExceptionEntry | |
78 | ||
79 | _DefaultIrq | |
80 | sub r1, LR, #4 | |
81 | cps #0x13 ; Switch to SVC for common stack | |
82 | mov r0, #6 | |
83 | blx PrePiCommonExceptionEntry | |
84 | ||
85 | _DefaultFiq | |
86 | sub r1, LR, #4 | |
87 | cps #0x13 ; Switch to SVC for common stack | |
88 | mov r0, #7 | |
89 | blx PrePiCommonExceptionEntry | |
90 | ||
91 | END |