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