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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 | #include <arch/asm.h> |
|
50 | 51 | ||
51 | static struct { |
52 | static struct { |
52 | const char *name; |
53 | const char *name; |
53 | iroutine f; |
54 | iroutine f; |
54 | } exc_table[IVT_ITEMS]; |
55 | } exc_table[IVT_ITEMS]; |
55 | 56 | ||
56 | SPINLOCK_INITIALIZE(exctbl_lock); |
57 | SPINLOCK_INITIALIZE(exctbl_lock); |
57 | 58 | ||
58 | /** Register exception handler |
59 | /** Register exception handler |
59 | * |
60 | * |
60 | * @param n Exception number |
61 | * @param n Exception number |
61 | * @param name Description |
62 | * @param name Description |
62 | * @param f Exception handler |
63 | * @param f Exception handler |
63 | */ |
64 | */ |
64 | iroutine exc_register(int n, const char *name, iroutine f) |
65 | iroutine exc_register(int n, const char *name, iroutine f) |
65 | { |
66 | { |
66 | ASSERT(n < IVT_ITEMS); |
67 | ASSERT(n < IVT_ITEMS); |
67 | 68 | ||
68 | iroutine old; |
69 | iroutine old; |
69 | 70 | ||
70 | spinlock_lock(&exctbl_lock); |
71 | spinlock_lock(&exctbl_lock); |
71 | 72 | ||
72 | old = exc_table[n].f; |
73 | old = exc_table[n].f; |
73 | exc_table[n].f = f; |
74 | exc_table[n].f = f; |
74 | exc_table[n].name = name; |
75 | exc_table[n].name = name; |
75 | 76 | ||
76 | spinlock_unlock(&exctbl_lock); |
77 | spinlock_unlock(&exctbl_lock); |
77 | 78 | ||
78 | return old; |
79 | return old; |
79 | } |
80 | } |
80 | 81 | ||
81 | /** Dispatch exception according to exception table |
82 | /** Dispatch exception according to exception table |
82 | * |
83 | * |
83 | * Called directly from the assembler code. |
84 | * Called directly from the assembler code. |
84 | * CPU is interrupts_disable()'d. |
85 | * CPU is interrupts_disable()'d. |
85 | */ |
86 | */ |
86 | void exc_dispatch(int n, istate_t *istate) |
87 | void exc_dispatch(int n, istate_t *istate) |
87 | { |
88 | { |
88 | ASSERT(n < IVT_ITEMS); |
89 | ASSERT(n < IVT_ITEMS); |
89 | 90 | ||
90 | #ifdef CONFIG_UDEBUG |
91 | #ifdef CONFIG_UDEBUG |
91 | if (THREAD) THREAD->udebug.uspace_state = istate; |
92 | if (THREAD) THREAD->udebug.uspace_state = istate; |
92 | #endif |
93 | #endif |
93 | 94 | ||
94 | exc_table[n].f(n + IVT_FIRST, istate); |
95 | exc_table[n].f(n + IVT_FIRST, istate); |
95 | 96 | ||
96 | #ifdef CONFIG_UDEBUG |
97 | #ifdef CONFIG_UDEBUG |
97 | if (THREAD) THREAD->udebug.uspace_state = NULL; |
98 | if (THREAD) THREAD->udebug.uspace_state = NULL; |
98 | #endif |
99 | #endif |
99 | 100 | ||
100 | /* This is a safe place to exit exiting thread */ |
101 | /* This is a safe place to exit exiting thread */ |
101 | if (THREAD && THREAD->interrupted && istate_from_uspace(istate)) |
102 | if (THREAD && THREAD->interrupted && istate_from_uspace(istate)) |
102 | thread_exit(); |
103 | thread_exit(); |
103 | } |
104 | } |
104 | 105 | ||
105 | /** Default 'null' exception handler */ |
106 | /** Default 'null' exception handler */ |
106 | static void exc_undef(int n, istate_t *istate) |
107 | static void exc_undef(int n, istate_t *istate) |
107 | { |
108 | { |
108 | fault_if_from_uspace(istate, "Unhandled exception %d.", n); |
109 | fault_if_from_uspace(istate, "Unhandled exception %d.", n); |
109 | panic("Unhandled exception %d.", n); |
110 | panic("Unhandled exception %d.", n); |
110 | } |
111 | } |
111 | 112 | ||
112 | #ifdef CONFIG_KCONSOLE |
113 | #ifdef CONFIG_KCONSOLE |
113 | 114 | ||
114 | /** kconsole cmd - print all exceptions */ |
115 | /** kconsole cmd - print all exceptions */ |
115 | static int cmd_exc_print(cmd_arg_t *argv) |
116 | static int cmd_exc_print(cmd_arg_t *argv) |
116 | { |
117 | { |
117 | #if (IVT_ITEMS > 0) |
118 | #if (IVT_ITEMS > 0) |
118 | unsigned int i; |
119 | unsigned int i; |
119 | char *symbol; |
120 | char *symbol; |
120 | 121 | ||
121 | spinlock_lock(&exctbl_lock); |
122 | spinlock_lock(&exctbl_lock); |
122 | 123 | ||
123 | #ifdef __32_BITS__ |
124 | #ifdef __32_BITS__ |
124 | printf("Exc Description Handler Symbol\n"); |
125 | printf("Exc Description Handler Symbol\n"); |
125 | printf("--- -------------------- ---------- --------\n"); |
126 | printf("--- -------------------- ---------- --------\n"); |
126 | #endif |
127 | #endif |
127 | 128 | ||
128 | #ifdef __64_BITS__ |
129 | #ifdef __64_BITS__ |
129 | printf("Exc Description Handler Symbol\n"); |
130 | printf("Exc Description Handler Symbol\n"); |
130 | printf("--- -------------------- ------------------ --------\n"); |
131 | printf("--- -------------------- ------------------ --------\n"); |
131 | #endif |
132 | #endif |
132 | 133 | ||
133 | for (i = 0; i < IVT_ITEMS; i++) { |
134 | for (i = 0; i < IVT_ITEMS; i++) { |
134 | symbol = get_symtab_entry((unative_t) exc_table[i].f); |
135 | symbol = get_symtab_entry((unative_t) exc_table[i].f); |
135 | if (!symbol) |
136 | if (!symbol) |
136 | symbol = "not found"; |
137 | symbol = "not found"; |
137 | 138 | ||
138 | #ifdef __32_BITS__ |
139 | #ifdef __32_BITS__ |
139 | printf("%-3u %-20s %10p %s\n", i + IVT_FIRST, exc_table[i].name, |
140 | printf("%-3u %-20s %10p %s\n", i + IVT_FIRST, exc_table[i].name, |
140 | exc_table[i].f, symbol); |
141 | exc_table[i].f, symbol); |
141 | #endif |
142 | #endif |
142 | 143 | ||
143 | #ifdef __64_BITS__ |
144 | #ifdef __64_BITS__ |
144 | printf("%-3u %-20s %18p %s\n", i + IVT_FIRST, exc_table[i].name, |
145 | printf("%-3u %-20s %18p %s\n", i + IVT_FIRST, exc_table[i].name, |
145 | exc_table[i].f, symbol); |
146 | exc_table[i].f, symbol); |
146 | #endif |
147 | #endif |
147 | 148 | ||
148 | if (((i + 1) % 20) == 0) { |
149 | if (((i + 1) % 20) == 0) { |
149 | printf(" -- Press any key to continue -- "); |
150 | printf(" -- Press any key to continue -- "); |
150 | spinlock_unlock(&exctbl_lock); |
151 | spinlock_unlock(&exctbl_lock); |
151 | getc(stdin); |
152 | getc(stdin); |
152 | spinlock_lock(&exctbl_lock); |
153 | spinlock_lock(&exctbl_lock); |
153 | printf("\n"); |
154 | printf("\n"); |
154 | } |
155 | } |
155 | } |
156 | } |
156 | 157 | ||
157 | spinlock_unlock(&exctbl_lock); |
158 | spinlock_unlock(&exctbl_lock); |
158 | #endif |
159 | #endif |
159 | 160 | ||
160 | return 1; |
161 | return 1; |
161 | } |
162 | } |
162 | 163 | ||
163 | 164 | ||
164 | static cmd_info_t exc_info = { |
165 | static cmd_info_t exc_info = { |
165 | .name = "exc", |
166 | .name = "exc", |
166 | .description = "Print exception table.", |
167 | .description = "Print exception table.", |
167 | .func = cmd_exc_print, |
168 | .func = cmd_exc_print, |
168 | .help = NULL, |
169 | .help = NULL, |
169 | .argc = 0, |
170 | .argc = 0, |
170 | .argv = NULL |
171 | .argv = NULL |
171 | }; |
172 | }; |
172 | 173 | ||
173 | #endif |
174 | #endif |
174 | 175 | ||
175 | /** Initialize generic exception handling support */ |
176 | /** Initialize generic exception handling support */ |
176 | void exc_init(void) |
177 | void exc_init(void) |
177 | { |
178 | { |
178 | int i; |
179 | int i; |
179 | 180 | ||
180 | for (i = 0; i < IVT_ITEMS; i++) |
181 | for (i = 0; i < IVT_ITEMS; i++) |
181 | exc_register(i, "undef", (iroutine) exc_undef); |
182 | exc_register(i, "undef", (iroutine) exc_undef); |
182 | 183 | ||
183 | #ifdef CONFIG_KCONSOLE |
184 | #ifdef CONFIG_KCONSOLE |
184 | cmd_initialize(&exc_info); |
185 | cmd_initialize(&exc_info); |
185 | if (!cmd_register(&exc_info)) |
186 | if (!cmd_register(&exc_info)) |
186 | printf("Cannot register command %s\n", exc_info.name); |
187 | printf("Cannot register command %s\n", exc_info.name); |
187 | #endif |
188 | #endif |
188 | } |
189 | } |
189 | 190 | ||
190 | /** @} |
191 | /** @} |
191 | */ |
192 | */ |
192 | 193 |