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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 | |||
2180 | stepan | 42 | /* Exception Vectors */ |
43 | #define EXC_RESET_VEC 0x0 |
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44 | #define EXC_UNDEF_INSTR_VEC 0x4 |
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45 | #define EXC_SWI_VEC 0x8 |
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46 | #define EXC_PREFETCH_ABORT_VEC 0xc |
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47 | #define EXC_DATA_ABORT_VEC 0x10 |
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48 | #define EXC_IRQ_VEC 0x18 |
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49 | #define EXC_FIQ_VEC 0x1c |
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50 | |||
2235 | stepan | 51 | /* Exception numbers */ |
52 | #define EXC_RESET 0 |
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53 | #define EXC_UNDEF_INSTR 1 |
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54 | #define EXC_SWI 2 |
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55 | #define EXC_PREFETCH_ABORT 3 |
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56 | #define EXC_DATA_ABORT 4 |
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57 | #define EXC_IRQ 5 |
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58 | #define EXC_FIQ 6 |
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59 | |||
60 | |||
61 | |||
2128 | jermar | 62 | typedef struct { |
2178 | kebrt | 63 | uint32_t r0; |
64 | uint32_t r1; |
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65 | uint32_t r2; |
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66 | uint32_t r3; |
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67 | uint32_t r4; |
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68 | uint32_t r5; |
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69 | uint32_t r6; |
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70 | uint32_t r7; |
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71 | uint32_t r8; |
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72 | uint32_t r10; |
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73 | uint32_t r11; |
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74 | uint32_t r12; |
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75 | uint32_t sp; |
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76 | uint32_t lr; |
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77 | |||
2235 | stepan | 78 | uint32_t spsr; |
2128 | jermar | 79 | } istate_t; |
80 | |||
81 | static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr) |
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82 | { |
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2235 | stepan | 83 | istate->lr = retaddr; |
2128 | jermar | 84 | } |
85 | |||
86 | /** Return true if exception happened while in userspace */ |
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87 | static inline int istate_from_uspace(istate_t *istate) |
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88 | { |
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2235 | stepan | 89 | return !(istate->lr & 0x80000000); |
90 | return 0; |
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2128 | jermar | 91 | } |
92 | static inline unative_t istate_get_pc(istate_t *istate) |
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93 | { |
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2235 | stepan | 94 | return istate->lr; |
2128 | jermar | 95 | } |
96 | |||
2235 | stepan | 97 | extern void setup_exception_stacks(void); |
2180 | stepan | 98 | extern void install_exception_handlers(void); |
99 | extern void exception_init(void); |
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100 | |||
2128 | jermar | 101 | #endif |
102 | |||
103 | /** @} |
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104 | */ |