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1 | /* |
1 | /* |
2 | * Copyright (c) 2007 Pavel Jancik, Michal Kebrt |
2 | * Copyright (c) 2007 Pavel Jancik, Michal Kebrt |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup arm32mm |
29 | /** @addtogroup arm32mm |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | #ifndef KERN_arm32_PAGE_FAULT_H_ |
34 | #ifndef KERN_arm32_PAGE_FAULT_H_ |
35 | #define KERN_arm32_PAGE_FAULT_H |
35 | #define KERN_arm32_PAGE_FAULT_H |
36 | 36 | ||
37 | #include <arch/types.h> |
37 | #include <arch/types.h> |
38 | 38 | ||
39 | 39 | ||
40 | /** Decribes CP15 "fault status register" (FSR). |
40 | /** Decribes CP15 "fault status register" (FSR). */ |
41 | */ |
- | |
42 | typedef struct { |
41 | typedef struct { |
43 | unsigned status : 3; |
42 | unsigned status : 3; |
44 | unsigned domain : 4; |
43 | unsigned domain : 4; |
45 | unsigned zero : 1; |
44 | unsigned zero : 1; |
46 | unsigned should_be_zero : 24; |
45 | unsigned should_be_zero : 24; |
47 | } __attribute__ ((packed)) fault_status_t; |
46 | } __attribute__ ((packed)) fault_status_t; |
48 | 47 | ||
49 | 48 | ||
50 | /** Help union used for casting integer value into #fault_status_t. |
49 | /** Help union used for casting integer value into #fault_status_t. */ |
51 | */ |
- | |
52 | typedef union { |
50 | typedef union { |
53 | fault_status_t fs; |
51 | fault_status_t fs; |
54 | uint32_t dummy; |
52 | uint32_t dummy; |
55 | } fault_status_union_t; |
53 | } fault_status_union_t; |
56 | 54 | ||
57 | 55 | ||
58 | /** Simplified description of instruction code. |
56 | /** Simplified description of instruction code. |
59 | * |
57 | * |
60 | * \note Used for recognizing memory access instructions. |
58 | * @note Used for recognizing memory access instructions. |
61 | * \see ARM architecture reference (chapter 3.1) |
59 | * @see ARM architecture reference (chapter 3.1) |
62 | */ |
60 | */ |
63 | typedef struct { |
61 | typedef struct { |
64 | unsigned dummy1 : 4; |
62 | unsigned dummy1 : 4; |
65 | unsigned bit4 : 1; |
63 | unsigned bit4 : 1; |
66 | unsigned bits567 : 3; |
64 | unsigned bits567 : 3; |
67 | unsigned dummy : 12; |
65 | unsigned dummy : 12; |
68 | unsigned access : 1; |
66 | unsigned access : 1; |
69 | unsigned opcode : 4; |
67 | unsigned opcode : 4; |
70 | unsigned type : 3; |
68 | unsigned type : 3; |
71 | unsigned condition : 4; |
69 | unsigned condition : 4; |
72 | } __attribute__ ((packed)) instruction_t; |
70 | } __attribute__ ((packed)) instruction_t; |
73 | 71 | ||
74 | 72 | ||
75 | /** Help union used for casting pc register (uint_32_t) value into |
73 | /** Help union used for casting pc register (uint_32_t) value into |
76 | * #instruction_t pointer. |
74 | * #instruction_t pointer. |
77 | */ |
75 | */ |
78 | typedef union { |
76 | typedef union { |
79 | instruction_t* instr; |
77 | instruction_t* instr; |
80 | uint32_t pc; |
78 | uint32_t pc; |
81 | } instruction_union_t; |
79 | } instruction_union_t; |
82 | 80 | ||
83 | 81 | ||
84 | extern void prefetch_abort(int n, istate_t *istate); |
82 | extern void prefetch_abort(int n, istate_t *istate); |
85 | extern void data_abort(int n, istate_t *istate); |
83 | extern void data_abort(int n, istate_t *istate); |
86 | 84 | ||
- | 85 | ||
87 | #endif |
86 | #endif |
88 | 87 | ||
89 | /** @} |
88 | /** @} |
90 | */ |
89 | */ |
91 | 90 | ||
92 | 91 |