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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/cmd.h> |
45 | #include <console/cmd.h> |
46 | #include <panic.h> |
46 | #include <panic.h> |
47 | #include <print.h> |
47 | #include <print.h> |
48 | #include <symtab.h> |
48 | #include <symtab.h> |
49 | 49 | ||
50 | static struct { |
50 | static struct { |
51 | const char *name; |
51 | const char *name; |
52 | iroutine f; |
52 | iroutine f; |
53 | } exc_table[IVT_ITEMS]; |
53 | } exc_table[IVT_ITEMS]; |
54 | 54 | ||
55 | SPINLOCK_INITIALIZE(exctbl_lock); |
55 | SPINLOCK_INITIALIZE(exctbl_lock); |
56 | 56 | ||
57 | /** Register exception handler |
57 | /** Register exception handler |
58 | * |
58 | * |
59 | * @param n Exception number |
59 | * @param n Exception number |
60 | * @param name Description |
60 | * @param name Description |
61 | * @param f Exception handler |
61 | * @param f Exception handler |
62 | */ |
62 | */ |
63 | iroutine exc_register(int n, const char *name, iroutine f) |
63 | iroutine exc_register(int n, const char *name, iroutine f) |
64 | { |
64 | { |
65 | ASSERT(n < IVT_ITEMS); |
65 | ASSERT(n < IVT_ITEMS); |
66 | 66 | ||
67 | iroutine old; |
67 | iroutine old; |
68 | 68 | ||
69 | spinlock_lock(&exctbl_lock); |
69 | spinlock_lock(&exctbl_lock); |
70 | 70 | ||
71 | old = exc_table[n].f; |
71 | old = exc_table[n].f; |
72 | exc_table[n].f = f; |
72 | exc_table[n].f = f; |
73 | exc_table[n].name = name; |
73 | exc_table[n].name = name; |
74 | 74 | ||
75 | spinlock_unlock(&exctbl_lock); |
75 | spinlock_unlock(&exctbl_lock); |
76 | 76 | ||
77 | return old; |
77 | return old; |
78 | } |
78 | } |
79 | 79 | ||
80 | /** Dispatch exception according to exception table |
80 | /** Dispatch exception according to exception table |
81 | * |
81 | * |
82 | * Called directly from the assembler code. |
82 | * Called directly from the assembler code. |
83 | * CPU is interrupts_disable()'d. |
83 | * CPU is interrupts_disable()'d. |
84 | */ |
84 | */ |
85 | void exc_dispatch(int n, istate_t *istate) |
85 | void exc_dispatch(int n, istate_t *istate) |
86 | { |
86 | { |
87 | ASSERT(n < IVT_ITEMS); |
87 | ASSERT(n < IVT_ITEMS); |
88 | 88 | ||
89 | #ifdef CONFIG_UDEBUG |
89 | #ifdef CONFIG_UDEBUG |
90 | if (THREAD) THREAD->udebug.uspace_state = istate; |
90 | if (THREAD) THREAD->udebug.uspace_state = istate; |
91 | #endif |
91 | #endif |
92 | 92 | ||
93 | exc_table[n].f(n + IVT_FIRST, istate); |
93 | exc_table[n].f(n + IVT_FIRST, istate); |
94 | 94 | ||
95 | #ifdef CONFIG_UDEBUG |
95 | #ifdef CONFIG_UDEBUG |
96 | if (THREAD) THREAD->udebug.uspace_state = NULL; |
96 | if (THREAD) THREAD->udebug.uspace_state = NULL; |
97 | #endif |
97 | #endif |
98 | 98 | ||
99 | /* This is a safe place to exit exiting thread */ |
99 | /* This is a safe place to exit exiting thread */ |
100 | if (THREAD && THREAD->interrupted && istate_from_uspace(istate)) |
100 | if (THREAD && THREAD->interrupted && istate_from_uspace(istate)) |
101 | thread_exit(); |
101 | thread_exit(); |
102 | } |
102 | } |
103 | 103 | ||
104 | /** Default 'null' exception handler */ |
104 | /** Default 'null' exception handler */ |
105 | static void exc_undef(int n, istate_t *istate) |
105 | static void exc_undef(int n, istate_t *istate) |
106 | { |
106 | { |
107 | fault_if_from_uspace(istate, "Unhandled exception %d.", n); |
107 | fault_if_from_uspace(istate, "Unhandled exception %d.", n); |
108 | panic("Unhandled exception %d.", n); |
108 | panic("Unhandled exception %d.", n); |
109 | } |
109 | } |
110 | 110 | ||
111 | #ifdef CONFIG_KCONSOLE |
111 | #ifdef CONFIG_KCONSOLE |
112 | 112 | ||
113 | /** kconsole cmd - print all exceptions */ |
113 | /** kconsole cmd - print all exceptions */ |
114 | static int cmd_exc_print(cmd_arg_t *argv) |
114 | static int cmd_exc_print(cmd_arg_t *argv) |
115 | { |
115 | { |
116 | #if (IVT_ITEMS > 0) |
116 | #if (IVT_ITEMS > 0) |
117 | unsigned int i; |
117 | unsigned int i; |
118 | char *symbol; |
118 | char *symbol; |
119 | 119 | ||
120 | spinlock_lock(&exctbl_lock); |
120 | spinlock_lock(&exctbl_lock); |
121 | 121 | ||
122 | #ifdef __32_BITS__ |
122 | #ifdef __32_BITS__ |
123 | printf("Exc Description Handler Symbol\n"); |
123 | printf("Exc Description Handler Symbol\n"); |
124 | printf("--- -------------------- ---------- --------\n"); |
124 | printf("--- -------------------- ---------- --------\n"); |
125 | #endif |
125 | #endif |
126 | 126 | ||
127 | #ifdef __64_BITS__ |
127 | #ifdef __64_BITS__ |
128 | printf("Exc Description Handler Symbol\n"); |
128 | printf("Exc Description Handler Symbol\n"); |
129 | printf("--- -------------------- ------------------ --------\n"); |
129 | printf("--- -------------------- ------------------ --------\n"); |
130 | #endif |
130 | #endif |
131 | 131 | ||
132 | for (i = 0; i < IVT_ITEMS; i++) { |
132 | for (i = 0; i < IVT_ITEMS; i++) { |
133 | symbol = symtab_fmt_name_lookup((unative_t) exc_table[i].f); |
133 | symbol = symtab_fmt_name_lookup((unative_t) exc_table[i].f); |
134 | 134 | ||
135 | #ifdef __32_BITS__ |
135 | #ifdef __32_BITS__ |
136 | printf("%-3u %-20s %10p %s\n", i + IVT_FIRST, exc_table[i].name, |
136 | printf("%-3u %-20s %10p %s\n", i + IVT_FIRST, exc_table[i].name, |
137 | exc_table[i].f, symbol); |
137 | exc_table[i].f, symbol); |
138 | #endif |
138 | #endif |
139 | 139 | ||
140 | #ifdef __64_BITS__ |
140 | #ifdef __64_BITS__ |
141 | printf("%-3u %-20s %18p %s\n", i + IVT_FIRST, exc_table[i].name, |
141 | printf("%-3u %-20s %18p %s\n", i + IVT_FIRST, exc_table[i].name, |
142 | exc_table[i].f, symbol); |
142 | exc_table[i].f, symbol); |
143 | #endif |
143 | #endif |
144 | 144 | ||
145 | if (((i + 1) % 20) == 0) { |
145 | if (((i + 1) % 20) == 0) { |
146 | printf(" -- Press any key to continue -- "); |
146 | printf(" -- Press any key to continue -- "); |
147 | spinlock_unlock(&exctbl_lock); |
147 | spinlock_unlock(&exctbl_lock); |
148 | _getc(stdin); |
148 | indev_pop_character(stdin); |
149 | spinlock_lock(&exctbl_lock); |
149 | spinlock_lock(&exctbl_lock); |
150 | printf("\n"); |
150 | printf("\n"); |
151 | } |
151 | } |
152 | } |
152 | } |
153 | 153 | ||
154 | spinlock_unlock(&exctbl_lock); |
154 | spinlock_unlock(&exctbl_lock); |
155 | #endif |
155 | #endif |
156 | 156 | ||
157 | return 1; |
157 | return 1; |
158 | } |
158 | } |
159 | 159 | ||
160 | 160 | ||
161 | static cmd_info_t exc_info = { |
161 | static cmd_info_t exc_info = { |
162 | .name = "exc", |
162 | .name = "exc", |
163 | .description = "Print exception table.", |
163 | .description = "Print exception table.", |
164 | .func = cmd_exc_print, |
164 | .func = cmd_exc_print, |
165 | .help = NULL, |
165 | .help = NULL, |
166 | .argc = 0, |
166 | .argc = 0, |
167 | .argv = NULL |
167 | .argv = NULL |
168 | }; |
168 | }; |
169 | 169 | ||
170 | #endif |
170 | #endif |
171 | 171 | ||
172 | /** Initialize generic exception handling support */ |
172 | /** Initialize generic exception handling support */ |
173 | void exc_init(void) |
173 | void exc_init(void) |
174 | { |
174 | { |
175 | int i; |
175 | int i; |
176 | 176 | ||
177 | for (i = 0; i < IVT_ITEMS; i++) |
177 | for (i = 0; i < IVT_ITEMS; i++) |
178 | exc_register(i, "undef", (iroutine) exc_undef); |
178 | exc_register(i, "undef", (iroutine) exc_undef); |
179 | 179 | ||
180 | #ifdef CONFIG_KCONSOLE |
180 | #ifdef CONFIG_KCONSOLE |
181 | cmd_initialize(&exc_info); |
181 | cmd_initialize(&exc_info); |
182 | if (!cmd_register(&exc_info)) |
182 | if (!cmd_register(&exc_info)) |
183 | printf("Cannot register command %s\n", exc_info.name); |
183 | printf("Cannot register command %s\n", exc_info.name); |
184 | #endif |
184 | #endif |
185 | } |
185 | } |
186 | 186 | ||
187 | /** @} |
187 | /** @} |
188 | */ |
188 | */ |
189 | 189 |