WebSVN – HelenOS – Diff – /trunk/kernel/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.
 */
 
/** @addtogroup genericinterrupt
 * @{
 */
/**
 * @file
 * @brief   Interrupt redirector.
 *
 * This file provides means of registering interrupt handlers
 * by kernel functions and calling the handlers when interrupts
 * occur.
 */
 
#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);
    /* This is a safe place to exit exiting thread */
    if (THREAD && THREAD->interrupted && istate_from_uspace(istate))
        thread_exit();
}
 
/** Default 'null' exception handler */
static void exc_undef(int n, istate_t *istate)
{
    fault_if_from_uspace(istate, "Unhandled exception %d.", n);
    panic("Unhandled exception %d.", n);
}
 
/** kconsole cmd - print all exceptions */
static int exc_print_cmd(cmd_arg_t *argv)
{
    unsigned int i;
    char *symbol;
 
    spinlock_lock(&exctbl_lock);
   
    if (sizeof(void *) == 4) {
        printf("Exc Description          Handler    Symbol\n");
        printf("--- -------------------- ---------- --------\n");
    } else {
        printf("Exc Description          Handler            Symbol\n");
        printf("--- -------------------- ------------------ --------\n");
    }
   
    for (i = 0; i < IVT_ITEMS; i++) {
        symbol = get_symtab_entry((unative_t) exc_table[i].f);
        if (!symbol)
            symbol = "not found";
       
        if (sizeof(void *) == 4)
            printf("%-3u %-20s %#10zx %s\n", i + IVT_FIRST, exc_table[i].name,
                exc_table[i].f, symbol);
        else
            printf("%-3u %-20s %#18zx %s\n", i + IVT_FIRST, exc_table[i].name,
                exc_table[i].f, symbol);
       
        if (((i + 1) % 20) == 0) {
            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 2721	Rev 2724
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		50
51	static struct {	51	static struct {
52	const char *name;	52	const char *name;
53	iroutine f;	53	iroutine f;
54	} exc_table[IVT_ITEMS];	54	} exc_table[IVT_ITEMS];
55		55
56	SPINLOCK_INITIALIZE(exctbl_lock);	56	SPINLOCK_INITIALIZE(exctbl_lock);
57		57
58	/** Register exception handler	58	/** Register exception handler
59	*	59	*
60	* @param n Exception number	60	* @param n Exception number
61	* @param name Description	61	* @param name Description
62	* @param f Exception handler	62	* @param f Exception handler
63	*/	63	*/
64	iroutine exc_register(int n, const char *name, iroutine f)	64	iroutine exc_register(int n, const char *name, iroutine f)
65	{	65	{
66	ASSERT(n < IVT_ITEMS);	66	ASSERT(n < IVT_ITEMS);
67		67
68	iroutine old;	68	iroutine old;
69		69
70	spinlock_lock(&exctbl_lock);	70	spinlock_lock(&exctbl_lock);
71		71
72	old = exc_table[n].f;	72	old = exc_table[n].f;
73	exc_table[n].f = f;	73	exc_table[n].f = f;
74	exc_table[n].name = name;	74	exc_table[n].name = name;
75		75
76	spinlock_unlock(&exctbl_lock);	76	spinlock_unlock(&exctbl_lock);
77		77
78	return old;	78	return old;
79	}	79	}
80		80
81	/** Dispatch exception according to exception table	81	/** Dispatch exception according to exception table
82	*	82	*
83	* Called directly from the assembler code.	83	* Called directly from the assembler code.
84	* CPU is interrupts_disable()'d.	84	* CPU is interrupts_disable()'d.
85	*/	85	*/
86	void exc_dispatch(int n, istate_t *istate)	86	void exc_dispatch(int n, istate_t *istate)
87	{	87	{
88	ASSERT(n < IVT_ITEMS);	88	ASSERT(n < IVT_ITEMS);
89		89
90	exc_table[n].f(n + IVT_FIRST, istate);	90	exc_table[n].f(n + IVT_FIRST, istate);
91	/* This is a safe place to exit exiting thread */	91	/* This is a safe place to exit exiting thread */
92	if (THREAD && THREAD->interrupted && istate_from_uspace(istate))	92	if (THREAD && THREAD->interrupted && istate_from_uspace(istate))
93	thread_exit();	93	thread_exit();
94	}	94	}
95		95
96	/** Default 'null' exception handler */	96	/** Default 'null' exception handler */
97	static void exc_undef(int n, istate_t *istate)	97	static void exc_undef(int n, istate_t *istate)
98	{	98	{
99	fault_if_from_uspace(istate, "Unhandled exception %d.", n);	99	fault_if_from_uspace(istate, "Unhandled exception %d.", n);
100	panic("Unhandled exception %d.", n);	100	panic("Unhandled exception %d.", n);
101	}	101	}
102		102
103	/** kconsole cmd - print all exceptions */	103	/** kconsole cmd - print all exceptions */
104	static int exc_print_cmd(cmd_arg_t *argv)	104	static int exc_print_cmd(cmd_arg_t *argv)
105	{	105	{
106	unsigned int i;	106	unsigned int i;
107	char *symbol;	107	char *symbol;
108		108
109	spinlock_lock(&exctbl_lock);	109	spinlock_lock(&exctbl_lock);
110		110
111	if (sizeof(void *) == 4) {	111	if (sizeof(void *) == 4) {
112	printf("Exc Description Handler Symbol\n");	112	printf("Exc Description Handler Symbol\n");
113	printf("--- -------------- ---------- --------\n");	113	printf("--- -------------------- ---------- --------\n");
114	} else {	114	} else {
115	printf("Exc Description Handler Symbol\n");	115	printf("Exc Description Handler Symbol\n");
116	printf("--- -------------- ------------------ --------\n");	116	printf("--- -------------------- ------------------ --------\n");
117	}	117	}
118		118
119	for (i = 0; i < IVT_ITEMS; i++) {	119	for (i = 0; i < IVT_ITEMS; i++) {
120	symbol = get_symtab_entry((unative_t) exc_table[i].f);	120	symbol = get_symtab_entry((unative_t) exc_table[i].f);
121	if (!symbol)	121	if (!symbol)
122	symbol = "not found";	122	symbol = "not found";
123		123
124	if (sizeof(void *) == 4)	124	if (sizeof(void *) == 4)
125	printf("%-3u %-14s %#10zx %s\n", i + IVT_FIRST, exc_table[i].name,	125	printf("%-3u %-20s %#10zx %s\n", i + IVT_FIRST, exc_table[i].name,
126	exc_table[i].f, symbol);	126	exc_table[i].f, symbol);
127	else	127	else
128	printf("%-3u %-14s %#18zx %s\n", i + IVT_FIRST, exc_table[i].name,	128	printf("%-3u %-20s %#18zx %s\n", i + IVT_FIRST, exc_table[i].name,
129	exc_table[i].f, symbol);	129	exc_table[i].f, symbol);
130		130
131	if (((i + 1) % 20) == 0) {	131	if (((i + 1) % 20) == 0) {
132	printf(" -- Press any key to continue -- ");	132	printf(" -- Press any key to continue -- ");
133	spinlock_unlock(&exctbl_lock);	133	spinlock_unlock(&exctbl_lock);
134	getc(stdin);	134	getc(stdin);
135	spinlock_lock(&exctbl_lock);	135	spinlock_lock(&exctbl_lock);
136	printf("\n");	136	printf("\n");
137	}	137	}
138	}	138	}
139		139
140	spinlock_unlock(&exctbl_lock);	140	spinlock_unlock(&exctbl_lock);
141		141
142	return 1;	142	return 1;
143	}	143	}
144		144
145	static cmd_info_t exc_info = {	145	static cmd_info_t exc_info = {
146	.name = "exc",	146	.name = "exc",
147	.description = "Print exception table.",	147	.description = "Print exception table.",
148	.func = exc_print_cmd,	148	.func = exc_print_cmd,
149	.help = NULL,	149	.help = NULL,
150	.argc = 0,	150	.argc = 0,
151	.argv = NULL	151	.argv = NULL
152	};	152	};
153		153
154	/** Initialize generic exception handling support */	154	/** Initialize generic exception handling support */
155	void exc_init(void)	155	void exc_init(void)
156	{	156	{
157	int i;	157	int i;
158		158
159	for (i=0;i < IVT_ITEMS; i++)	159	for (i=0;i < IVT_ITEMS; i++)
160	exc_register(i, "undef", (iroutine) exc_undef);	160	exc_register(i, "undef", (iroutine) exc_undef);
161		161
162	cmd_initialize(&exc_info);	162	cmd_initialize(&exc_info);
163	if (!cmd_register(&exc_info))	163	if (!cmd_register(&exc_info))
164	panic("could not register command %s\n", exc_info.name);	164	panic("could not register command %s\n", exc_info.name);
165	}	165	}
166		166
167	/** @}	167	/** @}
168	*/	168	*/
169		169

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/src/interrupt/interrupt.c @ 2745 – Rev 2721 → 2724