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1 | /* |
1 | /* |
2 | * Copyright (c) 2003-2004 Jakub Jermar |
2 | * Copyright (c) 2003-2004 Jakub Jermar |
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 mips32 |
29 | /** @addtogroup mips32 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_mips32_EXCEPTION_H_ |
35 | #ifndef KERN_mips32_EXCEPTION_H_ |
36 | #define KERN_mips32_EXCEPTION_H_ |
36 | #define KERN_mips32_EXCEPTION_H_ |
37 | 37 | ||
38 | #include <arch/types.h> |
38 | #include <arch/types.h> |
39 | #include <arch/cp0.h> |
39 | #include <arch/cp0.h> |
40 | 40 | ||
41 | #define EXC_Int 0 |
41 | #define EXC_Int 0 |
42 | #define EXC_Mod 1 |
42 | #define EXC_Mod 1 |
43 | #define EXC_TLBL 2 |
43 | #define EXC_TLBL 2 |
44 | #define EXC_TLBS 3 |
44 | #define EXC_TLBS 3 |
45 | #define EXC_AdEL 4 |
45 | #define EXC_AdEL 4 |
46 | #define EXC_AdES 5 |
46 | #define EXC_AdES 5 |
47 | #define EXC_IBE 6 |
47 | #define EXC_IBE 6 |
48 | #define EXC_DBE 7 |
48 | #define EXC_DBE 7 |
49 | #define EXC_Sys 8 |
49 | #define EXC_Sys 8 |
50 | #define EXC_Bp 9 |
50 | #define EXC_Bp 9 |
51 | #define EXC_RI 10 |
51 | #define EXC_RI 10 |
52 | #define EXC_CpU 11 |
52 | #define EXC_CpU 11 |
53 | #define EXC_Ov 12 |
53 | #define EXC_Ov 12 |
54 | #define EXC_Tr 13 |
54 | #define EXC_Tr 13 |
55 | #define EXC_VCEI 14 |
55 | #define EXC_VCEI 14 |
56 | #define EXC_FPE 15 |
56 | #define EXC_FPE 15 |
57 | #define EXC_WATCH 23 |
57 | #define EXC_WATCH 23 |
58 | #define EXC_VCED 31 |
58 | #define EXC_VCED 31 |
59 | 59 | ||
60 | typedef struct { |
60 | typedef struct { |
61 | uint32_t at; |
61 | uint32_t at; |
62 | uint32_t v0; |
62 | uint32_t v0; |
63 | uint32_t v1; |
63 | uint32_t v1; |
64 | uint32_t a0; |
64 | uint32_t a0; |
65 | uint32_t a1; |
65 | uint32_t a1; |
66 | uint32_t a2; |
66 | uint32_t a2; |
67 | uint32_t a3; |
67 | uint32_t a3; |
68 | uint32_t t0; |
68 | uint32_t t0; |
69 | uint32_t t1; |
69 | uint32_t t1; |
70 | uint32_t t2; |
70 | uint32_t t2; |
71 | uint32_t t3; |
71 | uint32_t t3; |
72 | uint32_t t4; |
72 | uint32_t t4; |
73 | uint32_t t5; |
73 | uint32_t t5; |
74 | uint32_t t6; |
74 | uint32_t t6; |
75 | uint32_t t7; |
75 | uint32_t t7; |
76 | uint32_t s0; |
76 | uint32_t s0; |
77 | uint32_t s1; |
77 | uint32_t s1; |
78 | uint32_t s2; |
78 | uint32_t s2; |
79 | uint32_t s3; |
79 | uint32_t s3; |
80 | uint32_t s4; |
80 | uint32_t s4; |
81 | uint32_t s5; |
81 | uint32_t s5; |
82 | uint32_t s6; |
82 | uint32_t s6; |
83 | uint32_t s7; |
83 | uint32_t s7; |
84 | uint32_t t8; |
84 | uint32_t t8; |
85 | uint32_t t9; |
85 | uint32_t t9; |
86 | uint32_t gp; |
86 | uint32_t gp; |
87 | uint32_t sp; |
87 | uint32_t sp; |
88 | uint32_t s8; |
88 | uint32_t s8; |
89 | uint32_t ra; |
89 | uint32_t ra; |
90 | 90 | ||
91 | uint32_t lo; |
91 | uint32_t lo; |
92 | uint32_t hi; |
92 | uint32_t hi; |
93 | 93 | ||
94 | uint32_t status; /* cp0_status */ |
94 | uint32_t status; /* cp0_status */ |
95 | uint32_t epc; /* cp0_epc */ |
95 | uint32_t epc; /* cp0_epc */ |
96 | uint32_t k1; /* We use it as thread-local pointer */ |
96 | uint32_t k1; /* We use it as thread-local pointer */ |
97 | } istate_t; |
97 | } istate_t; |
98 | 98 | ||
99 | static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr) |
99 | static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr) |
100 | { |
100 | { |
101 | istate->epc = retaddr; |
101 | istate->epc = retaddr; |
102 | } |
102 | } |
103 | 103 | ||
104 | /** Return true if exception happened while in userspace */ |
104 | /** Return true if exception happened while in userspace */ |
105 | static inline int istate_from_uspace(istate_t *istate) |
105 | static inline int istate_from_uspace(istate_t *istate) |
106 | { |
106 | { |
107 | return istate->status & cp0_status_um_bit; |
107 | return istate->status & cp0_status_um_bit; |
108 | } |
108 | } |
109 | static inline unative_t istate_get_pc(istate_t *istate) |
109 | static inline unative_t istate_get_pc(istate_t *istate) |
110 | { |
110 | { |
111 | return istate->epc; |
111 | return istate->epc; |
112 | } |
112 | } |
113 | 113 | ||
114 | extern void exception(istate_t *istate); |
114 | extern void exception(istate_t *istate); |
115 | extern void tlb_refill_entry(void); |
115 | extern void tlb_refill_entry(void); |
116 | extern void exception_entry(void); |
116 | extern void exception_entry(void); |
117 | extern void cache_error_entry(void); |
117 | extern void cache_error_entry(void); |
118 | extern void exception_init(void); |
118 | extern void exception_init(void); |
119 | 119 | ||
120 | #endif |
120 | #endif |
121 | 121 | ||
122 | /** @} |
122 | /** @} |
123 | */ |
123 | */ |
124 | 124 |