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 <console/cmd.h>
#include <panic.h>
#include <print.h>
#include <symtab.h>
 
static struct {
    const char *name;
    iroutine f;
} exc_table[IVT_ITEMS];
 
SPINLOCK_INITIALIZE(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, istate_t *istate)
{
    ASSERT(n < IVT_ITEMS);
   
    exc_table[n].f(n + IVT_FIRST, istate);
}
 
/** Default 'null' exception handler */
static void exc_undef(int n, istate_t *istate)
{
    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 Description Handler\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 %.*p(%s)\n", i + IVT_FIRST, exc_table[i].name,
               sizeof(__address) * 2, 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",
    .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;
 
    for (i=0;i < IVT_ITEMS; i++)
        exc_register(i, "undef", (iroutine) exc_undef);
 
    cmd_initialize(&exc_info);
    if (!cmd_register(&exc_info))
        panic("could not register command %s\n", exc_info.name);
}
 
 

Rev 1196	Rev 1224
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 <console/cmd.h>	34	#include <console/cmd.h>
35	#include <panic.h>	35	#include <panic.h>
36	#include <print.h>	36	#include <print.h>
37	#include <symtab.h>	37	#include <symtab.h>
38		38
39	static struct {	39	static struct {
40	const char *name;	40	const char *name;
41	iroutine f;	41	iroutine f;
42	} exc_table[IVT_ITEMS];	42	} exc_table[IVT_ITEMS];
43		43
44	SPINLOCK_INITIALIZE(exctbl_lock);	44	SPINLOCK_INITIALIZE(exctbl_lock);
45		45
46	/** Register exception handler	46	/** Register exception handler
47	*	47	*
48	* @param n Exception number	48	* @param n Exception number
49	* @param name Description	49	* @param name Description
50	* @param f Exception handler	50	* @param f Exception handler
51	*/	51	*/
52	iroutine exc_register(int n, const char *name, iroutine f)	52	iroutine exc_register(int n, const char *name, iroutine f)
53	{	53	{
54	ASSERT(n < IVT_ITEMS);	54	ASSERT(n < IVT_ITEMS);
55		55
56	iroutine old;	56	iroutine old;
57		57
58	spinlock_lock(&exctbl_lock);	58	spinlock_lock(&exctbl_lock);
59		59
60	old = exc_table[n].f;	60	old = exc_table[n].f;
61	exc_table[n].f = f;	61	exc_table[n].f = f;
62	exc_table[n].name = name;	62	exc_table[n].name = name;
63		63
64	spinlock_unlock(&exctbl_lock);	64	spinlock_unlock(&exctbl_lock);
65		65
66	return old;	66	return old;
67	}	67	}
68		68
69	/** Dispatch exception according to exception table	69	/** Dispatch exception according to exception table
70	*	70	*
71	* Called directly from the assembler code.	71	* Called directly from the assembler code.
72	* CPU is interrupts_disable()'d.	72	* CPU is interrupts_disable()'d.
73	*/	73	*/
74	void exc_dispatch(int n, istate_t *istate)	74	void exc_dispatch(int n, istate_t *istate)
75	{	75	{
76	ASSERT(n < IVT_ITEMS);	76	ASSERT(n < IVT_ITEMS);
77		77
78	exc_table[n].f(n + IVT_FIRST, istate);	78	exc_table[n].f(n + IVT_FIRST, istate);
79	}	79	}
80		80
81	/** Default 'null' exception handler */	81	/** Default 'null' exception handler */
82	static void exc_undef(int n, istate_t *istate)	82	static void exc_undef(int n, istate_t *istate)
83	{	83	{
84	panic("Unhandled exception %d.", n);	84	panic("Unhandled exception %d.", n);
85	}	85	}
86		86
87	/** kconsole cmd - print all exceptions */	87	/** kconsole cmd - print all exceptions */
88	static int exc_print_cmd(cmd_arg_t *argv)	88	static int exc_print_cmd(cmd_arg_t *argv)
89	{	89	{
90	int i;	90	int i;
91	char *symbol;	91	char *symbol;
92		92
93	spinlock_lock(&exctbl_lock);	93	spinlock_lock(&exctbl_lock);
94	printf("Exc Description Handler\n");	94	printf("Exc Description Handler\n");
95	for (i=0; i < IVT_ITEMS; i++) {	95	for (i=0; i < IVT_ITEMS; i++) {
96	symbol = get_symtab_entry((__native)exc_table[i].f);	96	symbol = get_symtab_entry((__native)exc_table[i].f);
97	if (!symbol)	97	if (!symbol)
98	symbol = "not found";	98	symbol = "not found";
99	printf("%d %s %p(%s)\n", i + IVT_FIRST, exc_table[i].name,	99	printf("%d %s %.*p(%s)\n", i + IVT_FIRST, exc_table[i].name,
100	exc_table[i].f,symbol);	100	sizeof(__address) * 2, exc_table[i].f,symbol);
101	if (!((i+1) % 20)) {	101	if (!((i+1) % 20)) {
102	printf("Press any key to continue.");	102	printf("Press any key to continue.");
103	spinlock_unlock(&exctbl_lock);	103	spinlock_unlock(&exctbl_lock);
104	getc(stdin);	104	getc(stdin);
105	spinlock_lock(&exctbl_lock);	105	spinlock_lock(&exctbl_lock);
106	printf("\n");	106	printf("\n");
107	}	107	}
108	}	108	}
109	spinlock_unlock(&exctbl_lock);	109	spinlock_unlock(&exctbl_lock);
110		110
111	return 1;	111	return 1;
112	}	112	}
113		113
114	static cmd_info_t exc_info = {	114	static cmd_info_t exc_info = {
115	.name = "exc",	115	.name = "exc",
116	.description = "Print exception table.",	116	.description = "Print exception table.",
117	.func = exc_print_cmd,	117	.func = exc_print_cmd,
118	.help = NULL,	118	.help = NULL,
119	.argc = 0,	119	.argc = 0,
120	.argv = NULL	120	.argv = NULL
121	};	121	};
122		122
123	/** Initialize generic exception handling support */	123	/** Initialize generic exception handling support */
124	void exc_init(void)	124	void exc_init(void)
125	{	125	{
126	int i;	126	int i;
127		127
128	for (i=0;i < IVT_ITEMS; i++)	128	for (i=0;i < IVT_ITEMS; i++)
129	exc_register(i, "undef", (iroutine) exc_undef);	129	exc_register(i, "undef", (iroutine) exc_undef);
130		130
131	cmd_initialize(&exc_info);	131	cmd_initialize(&exc_info);
132	if (!cmd_register(&exc_info))	132	if (!cmd_register(&exc_info))
133	panic("could not register command %s\n", exc_info.name);	133	panic("could not register command %s\n", exc_info.name);
134	}	134	}
135		135
136		136

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/src/interrupt/interrupt.c @ 1780 – Rev 1196 → 1224