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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 | #ifndef __mips32_EXCEPTION_H__ |
29 | #ifndef __mips32_EXCEPTION_H__ |
30 | #define __mips32_EXCEPTION_H__ |
30 | #define __mips32_EXCEPTION_H__ |
31 | 31 | ||
32 | #ifndef __mips32_TYPES_H__ |
32 | #ifndef __mips32_TYPES_H__ |
33 | # include <arch/types.h> |
33 | # include <arch/types.h> |
34 | #endif |
34 | #endif |
35 | 35 | ||
36 | #include <typedefs.h> |
36 | #include <typedefs.h> |
37 | #include <arch/cp0.h> |
37 | #include <arch/cp0.h> |
38 | 38 | ||
39 | #define EXC_Int 0 |
39 | #define EXC_Int 0 |
40 | #define EXC_Mod 1 |
40 | #define EXC_Mod 1 |
41 | #define EXC_TLBL 2 |
41 | #define EXC_TLBL 2 |
42 | #define EXC_TLBS 3 |
42 | #define EXC_TLBS 3 |
43 | #define EXC_AdEL 4 |
43 | #define EXC_AdEL 4 |
44 | #define EXC_AdES 5 |
44 | #define EXC_AdES 5 |
45 | #define EXC_IBE 6 |
45 | #define EXC_IBE 6 |
46 | #define EXC_DBE 7 |
46 | #define EXC_DBE 7 |
47 | #define EXC_Sys 8 |
47 | #define EXC_Sys 8 |
48 | #define EXC_Bp 9 |
48 | #define EXC_Bp 9 |
49 | #define EXC_RI 10 |
49 | #define EXC_RI 10 |
50 | #define EXC_CpU 11 |
50 | #define EXC_CpU 11 |
51 | #define EXC_Ov 12 |
51 | #define EXC_Ov 12 |
52 | #define EXC_Tr 13 |
52 | #define EXC_Tr 13 |
53 | #define EXC_VCEI 14 |
53 | #define EXC_VCEI 14 |
54 | #define EXC_FPE 15 |
54 | #define EXC_FPE 15 |
55 | #define EXC_WATCH 23 |
55 | #define EXC_WATCH 23 |
56 | #define EXC_VCED 31 |
56 | #define EXC_VCED 31 |
57 | 57 | ||
58 | struct istate { |
58 | struct istate { |
59 | __u32 at; |
59 | __u32 at; |
60 | __u32 v0; |
60 | __u32 v0; |
61 | __u32 v1; |
61 | __u32 v1; |
62 | __u32 a0; |
62 | __u32 a0; |
63 | __u32 a1; |
63 | __u32 a1; |
64 | __u32 a2; |
64 | __u32 a2; |
65 | __u32 a3; |
65 | __u32 a3; |
66 | __u32 t0; |
66 | __u32 t0; |
67 | __u32 t1; |
67 | __u32 t1; |
68 | __u32 t2; |
68 | __u32 t2; |
69 | __u32 t3; |
69 | __u32 t3; |
70 | __u32 t4; |
70 | __u32 t4; |
71 | __u32 t5; |
71 | __u32 t5; |
72 | __u32 t6; |
72 | __u32 t6; |
73 | __u32 t7; |
73 | __u32 t7; |
74 | __u32 s0; |
74 | __u32 s0; |
75 | __u32 s1; |
75 | __u32 s1; |
76 | __u32 s2; |
76 | __u32 s2; |
77 | __u32 s3; |
77 | __u32 s3; |
78 | __u32 s4; |
78 | __u32 s4; |
79 | __u32 s5; |
79 | __u32 s5; |
80 | __u32 s6; |
80 | __u32 s6; |
81 | __u32 s7; |
81 | __u32 s7; |
82 | __u32 t8; |
82 | __u32 t8; |
83 | __u32 t9; |
83 | __u32 t9; |
84 | __u32 gp; |
84 | __u32 gp; |
85 | __u32 sp; |
85 | __u32 sp; |
86 | __u32 s8; |
86 | __u32 s8; |
87 | __u32 ra; |
87 | __u32 ra; |
88 | 88 | ||
89 | __u32 lo; |
89 | __u32 lo; |
90 | __u32 hi; |
90 | __u32 hi; |
91 | 91 | ||
92 | __u32 status; /* cp0_status */ |
92 | __u32 status; /* cp0_status */ |
93 | __u32 epc; /* cp0_epc */ |
93 | __u32 epc; /* cp0_epc */ |
94 | __u32 k1; /* We use it as thread-local pointer */ |
94 | __u32 k1; /* We use it as thread-local pointer */ |
95 | }; |
95 | }; |
96 | 96 | ||
97 | static inline void istate_set_retaddr(istate_t *istate, __address retaddr) |
97 | static inline void istate_set_retaddr(istate_t *istate, __address retaddr) |
98 | { |
98 | { |
99 | istate->epc = retaddr; |
99 | istate->epc = retaddr; |
100 | } |
100 | } |
101 | 101 | ||
102 | /** Return true if exception happened while in userspace */ |
102 | /** Return true if exception happened while in userspace */ |
103 | static inline int istate_from_uspace(istate_t *istate) |
103 | static inline int istate_from_uspace(istate_t *istate) |
104 | { |
104 | { |
105 | return istate->status & cp0_status_um_bit; |
105 | return istate->status & cp0_status_um_bit; |
106 | } |
106 | } |
107 | static inline __native istate_get_pc(istate_t *istate) |
107 | static inline __native istate_get_pc(istate_t *istate) |
108 | { |
108 | { |
109 | return istate->epc; |
109 | return istate->epc; |
110 | } |
110 | } |
111 | 111 | ||
112 | extern void exception(istate_t *istate); |
112 | extern void exception(istate_t *istate); |
113 | extern void tlb_refill_entry(void); |
113 | extern void tlb_refill_entry(void); |
114 | extern void exception_entry(void); |
114 | extern void exception_entry(void); |
115 | extern void cache_error_entry(void); |
115 | extern void cache_error_entry(void); |
116 | extern void exception_init(void); |
116 | extern void exception_init(void); |
117 | 117 | ||
118 | #endif |
118 | #endif |
119 | 119 |