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1 | /* |
1 | /* |
2 | * Copyright (c) 2005 Ondrej Palkovsky |
2 | * Copyright (c) 2005 Ondrej Palkovsky |
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 genericinterrupt |
29 | /** @addtogroup genericinterrupt |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** |
32 | /** |
33 | * @file |
33 | * @file |
34 | * @brief Interrupt redirector. |
34 | * @brief Interrupt redirector. |
35 | * |
35 | * |
36 | * This file provides means of registering interrupt handlers |
36 | * This file provides means of registering interrupt handlers |
37 | * by kernel functions and calling the handlers when interrupts |
37 | * by kernel functions and calling the handlers when interrupts |
38 | * occur. |
38 | * occur. |
39 | */ |
39 | */ |
40 | 40 | ||
41 | #include <interrupt.h> |
41 | #include <interrupt.h> |
42 | #include <debug.h> |
42 | #include <debug.h> |
43 | #include <console/kconsole.h> |
43 | #include <console/kconsole.h> |
44 | #include <console/console.h> |
44 | #include <console/console.h> |
45 | #include <console/chardev.h> |
45 | #include <console/chardev.h> |
46 | #include <console/cmd.h> |
46 | #include <console/cmd.h> |
47 | #include <panic.h> |
47 | #include <panic.h> |
48 | #include <print.h> |
48 | #include <print.h> |
49 | #include <symtab.h> |
49 | #include <symtab.h> |
50 | 50 | ||
51 | static struct { |
51 | static struct { |
52 | const char *name; |
52 | const char *name; |
53 | iroutine f; |
53 | iroutine f; |
54 | } exc_table[IVT_ITEMS]; |
54 | } exc_table[IVT_ITEMS]; |
55 | 55 | ||
56 | SPINLOCK_INITIALIZE(exctbl_lock); |
56 | SPINLOCK_INITIALIZE(exctbl_lock); |
57 | 57 | ||
58 | /** Register exception handler |
58 | /** Register exception handler |
59 | * |
59 | * |
60 | * @param n Exception number |
60 | * @param n Exception number |
61 | * @param name Description |
61 | * @param name Description |
62 | * @param f Exception handler |
62 | * @param f Exception handler |
63 | */ |
63 | */ |
64 | iroutine exc_register(int n, const char *name, iroutine f) |
64 | iroutine exc_register(int n, const char *name, iroutine f) |
65 | { |
65 | { |
66 | ASSERT(n < IVT_ITEMS); |
66 | ASSERT(n < IVT_ITEMS); |
67 | 67 | ||
68 | iroutine old; |
68 | iroutine old; |
69 | 69 | ||
70 | spinlock_lock(&exctbl_lock); |
70 | spinlock_lock(&exctbl_lock); |
71 | 71 | ||
72 | old = exc_table[n].f; |
72 | old = exc_table[n].f; |
73 | exc_table[n].f = f; |
73 | exc_table[n].f = f; |
74 | exc_table[n].name = name; |
74 | exc_table[n].name = name; |
75 | 75 | ||
76 | spinlock_unlock(&exctbl_lock); |
76 | spinlock_unlock(&exctbl_lock); |
77 | 77 | ||
78 | return old; |
78 | return old; |
79 | } |
79 | } |
80 | 80 | ||
81 | /** Dispatch exception according to exception table |
81 | /** Dispatch exception according to exception table |
82 | * |
82 | * |
83 | * Called directly from the assembler code. |
83 | * Called directly from the assembler code. |
84 | * CPU is interrupts_disable()'d. |
84 | * CPU is interrupts_disable()'d. |
85 | */ |
85 | */ |
86 | void exc_dispatch(int n, istate_t *istate) |
86 | void exc_dispatch(int n, istate_t *istate) |
87 | { |
87 | { |
88 | ASSERT(n < IVT_ITEMS); |
88 | ASSERT(n < IVT_ITEMS); |
- | 89 | ||
- | 90 | if (THREAD) THREAD->uspace_state = istate; |
|
89 | 91 | ||
90 | exc_table[n].f(n + IVT_FIRST, istate); |
92 | exc_table[n].f(n + IVT_FIRST, istate); |
- | 93 | ||
- | 94 | if (THREAD) THREAD->uspace_state = NULL; |
|
- | 95 | ||
91 | /* This is a safe place to exit exiting thread */ |
96 | /* This is a safe place to exit exiting thread */ |
92 | if (THREAD && THREAD->interrupted && istate_from_uspace(istate)) |
97 | if (THREAD && THREAD->interrupted && istate_from_uspace(istate)) |
93 | thread_exit(); |
98 | thread_exit(); |
94 | } |
99 | } |
95 | 100 | ||
96 | /** Default 'null' exception handler */ |
101 | /** Default 'null' exception handler */ |
97 | static void exc_undef(int n, istate_t *istate) |
102 | static void exc_undef(int n, istate_t *istate) |
98 | { |
103 | { |
99 | fault_if_from_uspace(istate, "Unhandled exception %d.", n); |
104 | fault_if_from_uspace(istate, "Unhandled exception %d.", n); |
100 | panic("Unhandled exception %d.", n); |
105 | panic("Unhandled exception %d.", n); |
101 | } |
106 | } |
102 | 107 | ||
103 | /** kconsole cmd - print all exceptions */ |
108 | /** kconsole cmd - print all exceptions */ |
104 | static int exc_print_cmd(cmd_arg_t *argv) |
109 | static int exc_print_cmd(cmd_arg_t *argv) |
105 | { |
110 | { |
106 | #if (IVT_ITEMS > 0) |
111 | #if (IVT_ITEMS > 0) |
107 | unsigned int i; |
112 | unsigned int i; |
108 | char *symbol; |
113 | char *symbol; |
109 | 114 | ||
110 | spinlock_lock(&exctbl_lock); |
115 | spinlock_lock(&exctbl_lock); |
111 | 116 | ||
112 | if (sizeof(void *) == 4) { |
117 | if (sizeof(void *) == 4) { |
113 | printf("Exc Description Handler Symbol\n"); |
118 | printf("Exc Description Handler Symbol\n"); |
114 | printf("--- -------------------- ---------- --------\n"); |
119 | printf("--- -------------------- ---------- --------\n"); |
115 | } else { |
120 | } else { |
116 | printf("Exc Description Handler Symbol\n"); |
121 | printf("Exc Description Handler Symbol\n"); |
117 | printf("--- -------------------- ------------------ --------\n"); |
122 | printf("--- -------------------- ------------------ --------\n"); |
118 | } |
123 | } |
119 | 124 | ||
120 | for (i = 0; i < IVT_ITEMS; i++) { |
125 | for (i = 0; i < IVT_ITEMS; i++) { |
121 | symbol = get_symtab_entry((unative_t) exc_table[i].f); |
126 | symbol = get_symtab_entry((unative_t) exc_table[i].f); |
122 | if (!symbol) |
127 | if (!symbol) |
123 | symbol = "not found"; |
128 | symbol = "not found"; |
124 | 129 | ||
125 | if (sizeof(void *) == 4) |
130 | if (sizeof(void *) == 4) |
126 | printf("%-3u %-20s %#10zx %s\n", i + IVT_FIRST, exc_table[i].name, |
131 | printf("%-3u %-20s %#10zx %s\n", i + IVT_FIRST, exc_table[i].name, |
127 | exc_table[i].f, symbol); |
132 | exc_table[i].f, symbol); |
128 | else |
133 | else |
129 | printf("%-3u %-20s %#18zx %s\n", i + IVT_FIRST, exc_table[i].name, |
134 | printf("%-3u %-20s %#18zx %s\n", i + IVT_FIRST, exc_table[i].name, |
130 | exc_table[i].f, symbol); |
135 | exc_table[i].f, symbol); |
131 | 136 | ||
132 | if (((i + 1) % 20) == 0) { |
137 | if (((i + 1) % 20) == 0) { |
133 | printf(" -- Press any key to continue -- "); |
138 | printf(" -- Press any key to continue -- "); |
134 | spinlock_unlock(&exctbl_lock); |
139 | spinlock_unlock(&exctbl_lock); |
135 | getc(stdin); |
140 | getc(stdin); |
136 | spinlock_lock(&exctbl_lock); |
141 | spinlock_lock(&exctbl_lock); |
137 | printf("\n"); |
142 | printf("\n"); |
138 | } |
143 | } |
139 | } |
144 | } |
140 | 145 | ||
141 | spinlock_unlock(&exctbl_lock); |
146 | spinlock_unlock(&exctbl_lock); |
142 | #endif |
147 | #endif |
143 | 148 | ||
144 | return 1; |
149 | return 1; |
145 | } |
150 | } |
146 | 151 | ||
147 | static cmd_info_t exc_info = { |
152 | static cmd_info_t exc_info = { |
148 | .name = "exc", |
153 | .name = "exc", |
149 | .description = "Print exception table.", |
154 | .description = "Print exception table.", |
150 | .func = exc_print_cmd, |
155 | .func = exc_print_cmd, |
151 | .help = NULL, |
156 | .help = NULL, |
152 | .argc = 0, |
157 | .argc = 0, |
153 | .argv = NULL |
158 | .argv = NULL |
154 | }; |
159 | }; |
155 | 160 | ||
156 | /** Initialize generic exception handling support */ |
161 | /** Initialize generic exception handling support */ |
157 | void exc_init(void) |
162 | void exc_init(void) |
158 | { |
163 | { |
159 | int i; |
164 | int i; |
160 | 165 | ||
161 | for (i=0;i < IVT_ITEMS; i++) |
166 | for (i=0;i < IVT_ITEMS; i++) |
162 | exc_register(i, "undef", (iroutine) exc_undef); |
167 | exc_register(i, "undef", (iroutine) exc_undef); |
163 | 168 | ||
164 | cmd_initialize(&exc_info); |
169 | cmd_initialize(&exc_info); |
165 | if (!cmd_register(&exc_info)) |
170 | if (!cmd_register(&exc_info)) |
166 | panic("could not register command %s\n", exc_info.name); |
171 | panic("could not register command %s\n", exc_info.name); |
167 | } |
172 | } |
168 | 173 | ||
169 | /** @} |
174 | /** @} |
170 | */ |
175 | */ |
171 | 176 |