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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 | */ |