WebSVN – HelenOS-historic – Diff – /kernel/trunk/generic/src/interrupt/interrupt.c


/*
 * Copyright (C) 2005 Ondrej Palkovsky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <interrupt.h>
#include <debug.h>
#include <console/kconsole.h>
#include <console/console.h>
#include <console/chardev.h>
#include <panic.h>
#include <print.h>
#include <symtab.h>
 
static struct {
    const char *name;
    iroutine f;
} exc_table[IVT_ITEMS];
 
static spinlock_t exctbl_lock;
 
/** Register exception handler
 *
 * @param n Exception number
 * @param name Description
 * @param f Exception handler
 */
iroutine exc_register(int n, const char *name, iroutine f)
{
    ASSERT(n < IVT_ITEMS);
   
    iroutine old;
   
    spinlock_lock(&exctbl_lock);
 
    old = exc_table[n].f;
    exc_table[n].f = f;
    exc_table[n].name = name;
 
    spinlock_unlock(&exctbl_lock); 
 
    return old;
}
 
/** Dispatch exception according to exception table
 *
 * Called directly from the assembler code.
 * CPU is interrupts_disable()'d.
 */
void exc_dispatch(int n, void *stack)
{
    ASSERT(n < IVT_ITEMS);
   
    exc_table[n].f(n, stack);
}
 
/** Default 'null' exception handler */
static void exc_undef(int n, void *stack)
{
    panic("Unhandled exception %d.", n);
}
 
/** KConsole cmd - print all exceptions */
static int exc_print_cmd(cmd_arg_t *argv)
{
    int i;
    char *symbol;
 
    spinlock_lock(&exctbl_lock);
    printf("Exc Handler    Description\n");
    for (i=0; i < IVT_ITEMS; i++) {
        symbol = get_symtab_entry((__native)exc_table[i].f);
        if (!symbol)
            symbol = "not found";
        printf("%d %s 0x%p(%s)\n",i,exc_table[i].name,
               exc_table[i].f,symbol);     
        if (!((i+1) % 20)) {
            printf("Press any key to continue.");
            spinlock_unlock(&exctbl_lock);
            getc(stdin);
            spinlock_lock(&exctbl_lock);
            printf("\n");
        }
    }
    spinlock_unlock(&exctbl_lock);
   
    return 1;
}
 
static cmd_info_t exc_info = {
    .name = "exc_print",
    .description = "Print exception table",
    .func = exc_print_cmd,
    .help = NULL,
    .argc = 0,
    .argv = NULL
};
 
/** Initialize generic exception handling support */
void exc_init(void)
{
    int i;
 
    spinlock_initialize(&exctbl_lock, "exctbl_lock");
 
    for (i=0;i < IVT_ITEMS; i++)
        exc_register(i, "undef", exc_undef);
 
    spinlock_initialize(&exc_info.lock, "kconsole_excinfo");
    link_initialize(&exc_info.link);
    if (!cmd_register(&exc_info))
        panic("could not register command %s\n", exc_info.name);
}
 
 

Rev 578	Rev 579
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	#include <interrupt.h>	29	#include <interrupt.h>
30	#include <debug.h>	30	#include <debug.h>
31	#include <console/kconsole.h>	31	#include <console/kconsole.h>
32	#include <console/console.h>	32	#include <console/console.h>
33	#include <console/chardev.h>	33	#include <console/chardev.h>
34	#include <panic.h>	34	#include <panic.h>
35	#include <print.h>	35	#include <print.h>
36	#include <symtab.h>	36	#include <symtab.h>
37		37
38	static struct {	38	static struct {
39	const char *name;	39	const char *name;
40	iroutine f;	40	iroutine f;
41	} exc_table[IVT_ITEMS];	41	} exc_table[IVT_ITEMS];
42		42
43	static spinlock_t exctbl_lock;	43	static spinlock_t exctbl_lock;
44		44
45	/** Register exception handler	45	/** Register exception handler
46	*	46	*
47	* @param n Exception number	47	* @param n Exception number
48	* @param name Description	48	* @param name Description
49	* @param f Exception handler	49	* @param f Exception handler
50	*/	50	*/
51	iroutine exc_register(int n, const char *name, iroutine f)	51	iroutine exc_register(int n, const char *name, iroutine f)
52	{	52	{
53	ASSERT(n < IVT_ITEMS);	53	ASSERT(n < IVT_ITEMS);
54		54
55	iroutine old;	55	iroutine old;
56		56
57	spinlock_lock(&exctbl_lock);	57	spinlock_lock(&exctbl_lock);
58		58
59	old = exc_table[n].f;	59	old = exc_table[n].f;
60	exc_table[n].f = f;	60	exc_table[n].f = f;
61	exc_table[n].name = name;	61	exc_table[n].name = name;
62		62
63	spinlock_unlock(&exctbl_lock);	63	spinlock_unlock(&exctbl_lock);
64		64
65	return old;	65	return old;
66	}	66	}
67		67
68	/** Dispatch exception according to exception table	68	/** Dispatch exception according to exception table
69	*	69	*
70	* Called directly from the assembler code.	70	* Called directly from the assembler code.
71	* CPU is interrupts_disable()'d.	71	* CPU is interrupts_disable()'d.
72	*/	72	*/
73	void exc_dispatch(int n, void *stack)	73	void exc_dispatch(int n, void *stack)
74	{	74	{
75	ASSERT(n < IVT_ITEMS);	75	ASSERT(n < IVT_ITEMS);
76		76
77	exc_table[n].f(n, stack);	77	exc_table[n].f(n, stack);
78	}	78	}
79		79
80	/** Default 'null' exception handler */	80	/** Default 'null' exception handler */
81	static void exc_undef(int n, void *stack)	81	static void exc_undef(int n, void *stack)
82	{	82	{
83	panic("Unhandled exception %d.", n);	83	panic("Unhandled exception %d.", n);
84	}	84	}
85		85
86	/** KConsole cmd - print all exceptions */	86	/** KConsole cmd - print all exceptions */
87	static int exc_print_cmd(cmd_arg_t *argv)	87	static int exc_print_cmd(cmd_arg_t *argv)
88	{	88	{
89	int i;	89	int i;
90	char *symbol;	90	char *symbol;
91		91
92	spinlock_lock(&exctbl_lock);	92	spinlock_lock(&exctbl_lock);
93	printf("Exc Handler Description\n");	93	printf("Exc Handler Description\n");
94	for (i=0; i < IVT_ITEMS; i++) {	94	for (i=0; i < IVT_ITEMS; i++) {
95	symbol = get_symtab_entry((__native)exc_table[i].f);	95	symbol = get_symtab_entry((__native)exc_table[i].f);
96	if (!symbol)	96	if (!symbol)
97	symbol = "not found";	97	symbol = "not found";
98	printf("%d %s 0x%p(%s)\n",i,exc_table[i].name,	98	printf("%d %s 0x%p(%s)\n",i,exc_table[i].name,
99	exc_table[i].f,symbol);	99	exc_table[i].f,symbol);
100	if (!((i+1) % 20)) {	100	if (!((i+1) % 20)) {
101	printf("Press any key to continue.");	101	printf("Press any key to continue.");
-		102	spinlock_unlock(&exctbl_lock);
102	getc(stdin);	103	getc(stdin);
-		104	spinlock_lock(&exctbl_lock);
103	printf("\n");	105	printf("\n");
104	}	106	}
105	}	107	}
106	spinlock_unlock(&exctbl_lock);	108	spinlock_unlock(&exctbl_lock);
107		109
108	return 1;	110	return 1;
109	}	111	}
110		112
111	static cmd_info_t exc_info = {	113	static cmd_info_t exc_info = {
112	.name = "exc_print",	114	.name = "exc_print",
113	.description = "Print exception table",	115	.description = "Print exception table",
114	.func = exc_print_cmd,	116	.func = exc_print_cmd,
115	.help = NULL,	117	.help = NULL,
116	.argc = 0,	118	.argc = 0,
117	.argv = NULL	119	.argv = NULL
118	};	120	};
119		121
120	/** Initialize generic exception handling support */	122	/** Initialize generic exception handling support */
121	void exc_init(void)	123	void exc_init(void)
122	{	124	{
123	int i;	125	int i;
124		126
125	spinlock_initialize(&exctbl_lock, "exctbl_lock");	127	spinlock_initialize(&exctbl_lock, "exctbl_lock");
126		128
127	for (i=0;i < IVT_ITEMS; i++)	129	for (i=0;i < IVT_ITEMS; i++)
128	exc_register(i, "undef", exc_undef);	130	exc_register(i, "undef", exc_undef);
129		131
130	spinlock_initialize(&exc_info.lock, "kconsole_excinfo");	132	spinlock_initialize(&exc_info.lock, "kconsole_excinfo");
131	link_initialize(&exc_info.link);	133	link_initialize(&exc_info.link);
132	if (!cmd_register(&exc_info))	134	if (!cmd_register(&exc_info))
133	panic("could not register command %s\n", exc_info.name);	135	panic("could not register command %s\n", exc_info.name);
134	}	136	}
135		137
136		138

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/src/interrupt/interrupt.c @ 1780 – Rev 578 → 579