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Rev | Author | Line No. | Line |
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2128 | jermar | 1 | /* |
2178 | kebrt | 2 | * Copyright (c) 2007 Michal Kebrt |
2180 | stepan | 3 | * Copyright (c) 2007 Petr Stepan |
4 | * |
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2128 | jermar | 5 | * All rights reserved. |
6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions |
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9 | * are met: |
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10 | * |
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11 | * - Redistributions of source code must retain the above copyright |
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12 | * notice, this list of conditions and the following disclaimer. |
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13 | * - Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * - The name of the author may not be used to endorse or promote products |
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17 | * derived from this software without specific prior written permission. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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20 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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21 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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24 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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28 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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29 | */ |
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30 | |||
31 | /** @addtogroup arm32 |
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32 | * @{ |
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33 | */ |
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34 | /** @file |
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35 | */ |
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36 | |||
37 | #ifndef KERN_arm32_EXCEPTION_H_ |
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38 | #define KERN_arm32_EXCEPTION_H_ |
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39 | |||
40 | #include <arch/types.h> |
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41 | |||
2262 | stepan | 42 | #define HIGH_EXCEPTION_VECTORS |
43 | |||
44 | #ifdef HIGH_EXCEPTION_VECTORS |
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45 | #define EXC_BASE_ADDRESS 0xffff0000 |
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46 | #else |
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47 | #define EXC_BASE_ADDRESS 0x0 |
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48 | #endif |
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49 | |||
2180 | stepan | 50 | /* Exception Vectors */ |
2262 | stepan | 51 | #define EXC_RESET_VEC EXC_BASE_ADDRESS + 0x0 |
52 | #define EXC_UNDEF_INSTR_VEC EXC_BASE_ADDRESS + 0x4 |
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53 | #define EXC_SWI_VEC EXC_BASE_ADDRESS + 0x8 |
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54 | #define EXC_PREFETCH_ABORT_VEC EXC_BASE_ADDRESS + 0xc |
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55 | #define EXC_DATA_ABORT_VEC EXC_BASE_ADDRESS + 0x10 |
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56 | #define EXC_IRQ_VEC EXC_BASE_ADDRESS + 0x18 |
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57 | #define EXC_FIQ_VEC EXC_BASE_ADDRESS + 0x1c |
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2180 | stepan | 58 | |
2235 | stepan | 59 | /* Exception numbers */ |
60 | #define EXC_RESET 0 |
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61 | #define EXC_UNDEF_INSTR 1 |
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62 | #define EXC_SWI 2 |
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63 | #define EXC_PREFETCH_ABORT 3 |
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64 | #define EXC_DATA_ABORT 4 |
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65 | #define EXC_IRQ 5 |
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66 | #define EXC_FIQ 6 |
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67 | |||
68 | |||
69 | |||
2128 | jermar | 70 | typedef struct { |
2178 | kebrt | 71 | uint32_t r0; |
72 | uint32_t r1; |
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73 | uint32_t r2; |
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74 | uint32_t r3; |
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75 | uint32_t r4; |
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76 | uint32_t r5; |
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77 | uint32_t r6; |
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78 | uint32_t r7; |
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79 | uint32_t r8; |
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2240 | jancik | 80 | uint32_t r9; |
2178 | kebrt | 81 | uint32_t r10; |
82 | uint32_t r11; |
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83 | uint32_t r12; |
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84 | uint32_t sp; |
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85 | uint32_t lr; |
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86 | |||
2235 | stepan | 87 | uint32_t spsr; |
2128 | jermar | 88 | } istate_t; |
89 | |||
90 | static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr) |
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91 | { |
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2235 | stepan | 92 | istate->lr = retaddr; |
2128 | jermar | 93 | } |
94 | |||
95 | /** Return true if exception happened while in userspace */ |
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96 | static inline int istate_from_uspace(istate_t *istate) |
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97 | { |
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2235 | stepan | 98 | return !(istate->lr & 0x80000000); |
99 | return 0; |
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2128 | jermar | 100 | } |
101 | static inline unative_t istate_get_pc(istate_t *istate) |
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102 | { |
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2235 | stepan | 103 | return istate->lr; |
2128 | jermar | 104 | } |
105 | |||
2235 | stepan | 106 | extern void setup_exception_stacks(void); |
2180 | stepan | 107 | extern void install_exception_handlers(void); |
108 | extern void exception_init(void); |
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109 | |||
2128 | jermar | 110 | #endif |
111 | |||
112 | /** @} |
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113 | */ |