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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 __mips32_EXCEPTION_H__ |
35 | #ifndef __mips32_EXCEPTION_H__ |
36 | #define __mips32_EXCEPTION_H__ |
36 | #define __mips32_EXCEPTION_H__ |
37 | 37 | ||
38 | #ifndef __mips32_TYPES_H__ |
38 | #ifndef __mips32_TYPES_H__ |
39 | # include <arch/types.h> |
39 | # include <arch/types.h> |
40 | #endif |
40 | #endif |
41 | 41 | ||
42 | #include <typedefs.h> |
42 | #include <typedefs.h> |
43 | #include <arch/cp0.h> |
43 | #include <arch/cp0.h> |
44 | 44 | ||
45 | #define EXC_Int 0 |
45 | #define EXC_Int 0 |
46 | #define EXC_Mod 1 |
46 | #define EXC_Mod 1 |
47 | #define EXC_TLBL 2 |
47 | #define EXC_TLBL 2 |
48 | #define EXC_TLBS 3 |
48 | #define EXC_TLBS 3 |
49 | #define EXC_AdEL 4 |
49 | #define EXC_AdEL 4 |
50 | #define EXC_AdES 5 |
50 | #define EXC_AdES 5 |
51 | #define EXC_IBE 6 |
51 | #define EXC_IBE 6 |
52 | #define EXC_DBE 7 |
52 | #define EXC_DBE 7 |
53 | #define EXC_Sys 8 |
53 | #define EXC_Sys 8 |
54 | #define EXC_Bp 9 |
54 | #define EXC_Bp 9 |
55 | #define EXC_RI 10 |
55 | #define EXC_RI 10 |
56 | #define EXC_CpU 11 |
56 | #define EXC_CpU 11 |
57 | #define EXC_Ov 12 |
57 | #define EXC_Ov 12 |
58 | #define EXC_Tr 13 |
58 | #define EXC_Tr 13 |
59 | #define EXC_VCEI 14 |
59 | #define EXC_VCEI 14 |
60 | #define EXC_FPE 15 |
60 | #define EXC_FPE 15 |
61 | #define EXC_WATCH 23 |
61 | #define EXC_WATCH 23 |
62 | #define EXC_VCED 31 |
62 | #define EXC_VCED 31 |
63 | 63 | ||
64 | struct istate { |
64 | struct istate { |
65 | __u32 at; |
65 | uint32_t at; |
66 | __u32 v0; |
66 | uint32_t v0; |
67 | __u32 v1; |
67 | uint32_t v1; |
68 | __u32 a0; |
68 | uint32_t a0; |
69 | __u32 a1; |
69 | uint32_t a1; |
70 | __u32 a2; |
70 | uint32_t a2; |
71 | __u32 a3; |
71 | uint32_t a3; |
72 | __u32 t0; |
72 | uint32_t t0; |
73 | __u32 t1; |
73 | uint32_t t1; |
74 | __u32 t2; |
74 | uint32_t t2; |
75 | __u32 t3; |
75 | uint32_t t3; |
76 | __u32 t4; |
76 | uint32_t t4; |
77 | __u32 t5; |
77 | uint32_t t5; |
78 | __u32 t6; |
78 | uint32_t t6; |
79 | __u32 t7; |
79 | uint32_t t7; |
80 | __u32 s0; |
80 | uint32_t s0; |
81 | __u32 s1; |
81 | uint32_t s1; |
82 | __u32 s2; |
82 | uint32_t s2; |
83 | __u32 s3; |
83 | uint32_t s3; |
84 | __u32 s4; |
84 | uint32_t s4; |
85 | __u32 s5; |
85 | uint32_t s5; |
86 | __u32 s6; |
86 | uint32_t s6; |
87 | __u32 s7; |
87 | uint32_t s7; |
88 | __u32 t8; |
88 | uint32_t t8; |
89 | __u32 t9; |
89 | uint32_t t9; |
90 | __u32 gp; |
90 | uint32_t gp; |
91 | __u32 sp; |
91 | uint32_t sp; |
92 | __u32 s8; |
92 | uint32_t s8; |
93 | __u32 ra; |
93 | uint32_t ra; |
94 | 94 | ||
95 | __u32 lo; |
95 | uint32_t lo; |
96 | __u32 hi; |
96 | uint32_t hi; |
97 | 97 | ||
98 | __u32 status; /* cp0_status */ |
98 | uint32_t status; /* cp0_status */ |
99 | __u32 epc; /* cp0_epc */ |
99 | uint32_t epc; /* cp0_epc */ |
100 | __u32 k1; /* We use it as thread-local pointer */ |
100 | uint32_t k1; /* We use it as thread-local pointer */ |
101 | }; |
101 | }; |
102 | 102 | ||
103 | static inline void istate_set_retaddr(istate_t *istate, __address retaddr) |
103 | static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr) |
104 | { |
104 | { |
105 | istate->epc = retaddr; |
105 | istate->epc = retaddr; |
106 | } |
106 | } |
107 | 107 | ||
108 | /** Return true if exception happened while in userspace */ |
108 | /** Return true if exception happened while in userspace */ |
109 | static inline int istate_from_uspace(istate_t *istate) |
109 | static inline int istate_from_uspace(istate_t *istate) |
110 | { |
110 | { |
111 | return istate->status & cp0_status_um_bit; |
111 | return istate->status & cp0_status_um_bit; |
112 | } |
112 | } |
113 | static inline __native istate_get_pc(istate_t *istate) |
113 | static inline unative_t istate_get_pc(istate_t *istate) |
114 | { |
114 | { |
115 | return istate->epc; |
115 | return istate->epc; |
116 | } |
116 | } |
117 | 117 | ||
118 | extern void exception(istate_t *istate); |
118 | extern void exception(istate_t *istate); |
119 | extern void tlb_refill_entry(void); |
119 | extern void tlb_refill_entry(void); |
120 | extern void exception_entry(void); |
120 | extern void exception_entry(void); |
121 | extern void cache_error_entry(void); |
121 | extern void cache_error_entry(void); |
122 | extern void exception_init(void); |
122 | extern void exception_init(void); |
123 | 123 | ||
124 | #endif |
124 | #endif |
125 | 125 | ||
126 | /** @} |
126 | /** @} |
127 | */ |
127 | */ |
128 | 128 |