WebSVN – HelenOS – Diff – /branches/dynload/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/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);
 
#ifdef CONFIG_UDEBUG
    if (THREAD) THREAD->udebug.uspace_state = istate;
#endif
   
    exc_table[n].f(n + IVT_FIRST, istate);
 
#ifdef CONFIG_UDEBUG
    if (THREAD) THREAD->udebug.uspace_state = NULL;
#endif
 
    /* 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);
}
 
#ifdef CONFIG_KCONSOLE
 
/** kconsole cmd - print all exceptions */
static int cmd_exc_print(cmd_arg_t *argv)
{
#if (IVT_ITEMS > 0)
    unsigned int i;
    char *symbol;
 
    spinlock_lock(&exctbl_lock);
 
#ifdef __32_BITS__
    printf("Exc Description          Handler    Symbol\n");
    printf("--- -------------------- ---------- --------\n");
#endif
 
#ifdef __64_BITS__
    printf("Exc Description          Handler            Symbol\n");
    printf("--- -------------------- ------------------ --------\n");
#endif
   
    for (i = 0; i < IVT_ITEMS; i++) {
        symbol = symtab_fmt_name_lookup((unative_t) exc_table[i].f);
 
#ifdef __32_BITS__
        printf("%-3u %-20s %10p %s\n", i + IVT_FIRST, exc_table[i].name,
            exc_table[i].f, symbol);
#endif
 
#ifdef __64_BITS__
        printf("%-3u %-20s %18p %s\n", i + IVT_FIRST, exc_table[i].name,
            exc_table[i].f, symbol);
#endif
       
        if (((i + 1) % 20) == 0) {
            printf(" -- Press any key to continue -- ");
            spinlock_unlock(&exctbl_lock);
            indev_pop_character(stdin);
            spinlock_lock(&exctbl_lock);
            printf("\n");
        }
    }
   
    spinlock_unlock(&exctbl_lock);
#endif
   
    return 1;
}
 
 
static cmd_info_t exc_info = {
    .name = "exc",
    .description = "Print exception table.",
    .func = cmd_exc_print,
    .help = NULL,
    .argc = 0,
    .argv = NULL
};
 
#endif
 
/** 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);
 
#ifdef CONFIG_KCONSOLE
    cmd_initialize(&exc_info);
    if (!cmd_register(&exc_info))
        printf("Cannot register command %s\n", exc_info.name);
#endif
}
 
/** @}
 */
 

Rev 4346	Rev 4348
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/cmd.h>	45	#include <console/cmd.h>
46	#include <panic.h>	46	#include <panic.h>
47	#include <print.h>	47	#include <print.h>
48	#include <symtab.h>	48	#include <symtab.h>
49		49
50	static struct {	50	static struct {
51	const char *name;	51	const char *name;
52	iroutine f;	52	iroutine f;
53	} exc_table[IVT_ITEMS];	53	} exc_table[IVT_ITEMS];
54		54
55	SPINLOCK_INITIALIZE(exctbl_lock);	55	SPINLOCK_INITIALIZE(exctbl_lock);
56		56
57	/** Register exception handler	57	/** Register exception handler
58	*	58	*
59	* @param n Exception number	59	* @param n Exception number
60	* @param name Description	60	* @param name Description
61	* @param f Exception handler	61	* @param f Exception handler
62	*/	62	*/
63	iroutine exc_register(int n, const char *name, iroutine f)	63	iroutine exc_register(int n, const char *name, iroutine f)
64	{	64	{
65	ASSERT(n < IVT_ITEMS);	65	ASSERT(n < IVT_ITEMS);
66		66
67	iroutine old;	67	iroutine old;
68		68
69	spinlock_lock(&exctbl_lock);	69	spinlock_lock(&exctbl_lock);
70		70
71	old = exc_table[n].f;	71	old = exc_table[n].f;
72	exc_table[n].f = f;	72	exc_table[n].f = f;
73	exc_table[n].name = name;	73	exc_table[n].name = name;
74		74
75	spinlock_unlock(&exctbl_lock);	75	spinlock_unlock(&exctbl_lock);
76		76
77	return old;	77	return old;
78	}	78	}
79		79
80	/** Dispatch exception according to exception table	80	/** Dispatch exception according to exception table
81	*	81	*
82	* Called directly from the assembler code.	82	* Called directly from the assembler code.
83	* CPU is interrupts_disable()'d.	83	* CPU is interrupts_disable()'d.
84	*/	84	*/
85	void exc_dispatch(int n, istate_t *istate)	85	void exc_dispatch(int n, istate_t *istate)
86	{	86	{
87	ASSERT(n < IVT_ITEMS);	87	ASSERT(n < IVT_ITEMS);
88		88
89	#ifdef CONFIG_UDEBUG	89	#ifdef CONFIG_UDEBUG
90	if (THREAD) THREAD->udebug.uspace_state = istate;	90	if (THREAD) THREAD->udebug.uspace_state = istate;
91	#endif	91	#endif
92		92
93	exc_table[n].f(n + IVT_FIRST, istate);	93	exc_table[n].f(n + IVT_FIRST, istate);
94		94
95	#ifdef CONFIG_UDEBUG	95	#ifdef CONFIG_UDEBUG
96	if (THREAD) THREAD->udebug.uspace_state = NULL;	96	if (THREAD) THREAD->udebug.uspace_state = NULL;
97	#endif	97	#endif
98		98
99	/* This is a safe place to exit exiting thread */	99	/* This is a safe place to exit exiting thread */
100	if (THREAD && THREAD->interrupted && istate_from_uspace(istate))	100	if (THREAD && THREAD->interrupted && istate_from_uspace(istate))
101	thread_exit();	101	thread_exit();
102	}	102	}
103		103
104	/** Default 'null' exception handler */	104	/** Default 'null' exception handler */
105	static void exc_undef(int n, istate_t *istate)	105	static void exc_undef(int n, istate_t *istate)
106	{	106	{
107	fault_if_from_uspace(istate, "Unhandled exception %d.", n);	107	fault_if_from_uspace(istate, "Unhandled exception %d.", n);
108	panic("Unhandled exception %d.", n);	108	panic("Unhandled exception %d.", n);
109	}	109	}
110		110
111	#ifdef CONFIG_KCONSOLE	111	#ifdef CONFIG_KCONSOLE
112		112
113	/** kconsole cmd - print all exceptions */	113	/** kconsole cmd - print all exceptions */
114	static int cmd_exc_print(cmd_arg_t *argv)	114	static int cmd_exc_print(cmd_arg_t *argv)
115	{	115	{
116	#if (IVT_ITEMS > 0)	116	#if (IVT_ITEMS > 0)
117	unsigned int i;	117	unsigned int i;
118	char *symbol;	118	char *symbol;
119		119
120	spinlock_lock(&exctbl_lock);	120	spinlock_lock(&exctbl_lock);
121		121
122	#ifdef __32_BITS__	122	#ifdef __32_BITS__
123	printf("Exc Description Handler Symbol\n");	123	printf("Exc Description Handler Symbol\n");
124	printf("--- -------------------- ---------- --------\n");	124	printf("--- -------------------- ---------- --------\n");
125	#endif	125	#endif
126		126
127	#ifdef __64_BITS__	127	#ifdef __64_BITS__
128	printf("Exc Description Handler Symbol\n");	128	printf("Exc Description Handler Symbol\n");
129	printf("--- -------------------- ------------------ --------\n");	129	printf("--- -------------------- ------------------ --------\n");
130	#endif	130	#endif
131		131
132	for (i = 0; i < IVT_ITEMS; i++) {	132	for (i = 0; i < IVT_ITEMS; i++) {
133	symbol = symtab_fmt_name_lookup((unative_t) exc_table[i].f);	133	symbol = symtab_fmt_name_lookup((unative_t) exc_table[i].f);
134		134
135	#ifdef __32_BITS__	135	#ifdef __32_BITS__
136	printf("%-3u %-20s %10p %s\n", i + IVT_FIRST, exc_table[i].name,	136	printf("%-3u %-20s %10p %s\n", i + IVT_FIRST, exc_table[i].name,
137	exc_table[i].f, symbol);	137	exc_table[i].f, symbol);
138	#endif	138	#endif
139		139
140	#ifdef __64_BITS__	140	#ifdef __64_BITS__
141	printf("%-3u %-20s %18p %s\n", i + IVT_FIRST, exc_table[i].name,	141	printf("%-3u %-20s %18p %s\n", i + IVT_FIRST, exc_table[i].name,
142	exc_table[i].f, symbol);	142	exc_table[i].f, symbol);
143	#endif	143	#endif
144		144
145	if (((i + 1) % 20) == 0) {	145	if (((i + 1) % 20) == 0) {
146	printf(" -- Press any key to continue -- ");	146	printf(" -- Press any key to continue -- ");
147	spinlock_unlock(&exctbl_lock);	147	spinlock_unlock(&exctbl_lock);
148	_getc(stdin);	148	indev_pop_character(stdin);
149	spinlock_lock(&exctbl_lock);	149	spinlock_lock(&exctbl_lock);
150	printf("\n");	150	printf("\n");
151	}	151	}
152	}	152	}
153		153
154	spinlock_unlock(&exctbl_lock);	154	spinlock_unlock(&exctbl_lock);
155	#endif	155	#endif
156		156
157	return 1;	157	return 1;
158	}	158	}
159		159
160		160
161	static cmd_info_t exc_info = {	161	static cmd_info_t exc_info = {
162	.name = "exc",	162	.name = "exc",
163	.description = "Print exception table.",	163	.description = "Print exception table.",
164	.func = cmd_exc_print,	164	.func = cmd_exc_print,
165	.help = NULL,	165	.help = NULL,
166	.argc = 0,	166	.argc = 0,
167	.argv = NULL	167	.argv = NULL
168	};	168	};
169		169
170	#endif	170	#endif
171		171
172	/** Initialize generic exception handling support */	172	/** Initialize generic exception handling support */
173	void exc_init(void)	173	void exc_init(void)
174	{	174	{
175	int i;	175	int i;
176		176
177	for (i = 0; i < IVT_ITEMS; i++)	177	for (i = 0; i < IVT_ITEMS; i++)
178	exc_register(i, "undef", (iroutine) exc_undef);	178	exc_register(i, "undef", (iroutine) exc_undef);
179		179
180	#ifdef CONFIG_KCONSOLE	180	#ifdef CONFIG_KCONSOLE
181	cmd_initialize(&exc_info);	181	cmd_initialize(&exc_info);
182	if (!cmd_register(&exc_info))	182	if (!cmd_register(&exc_info))
183	printf("Cannot register command %s\n", exc_info.name);	183	printf("Cannot register command %s\n", exc_info.name);
184	#endif	184	#endif
185	}	185	}
186		186
187	/** @}	187	/** @}
188	*/	188	*/
189		189

Subversion Repositories HelenOS

(root)/branches/dynload/kernel/generic/src/interrupt/interrupt.c – Rev 4346 → 4348