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/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);
            _getc(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 4132	Rev 4137
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		-
49	#ifdef CONFIG_SYMTAB	-
50	#include <symtab.h>	48	#include <symtab.h>
51	#endif	-
52		49
53	static struct {	50	static struct {
54	const char *name;	51	const char *name;
55	iroutine f;	52	iroutine f;
56	} exc_table[IVT_ITEMS];	53	} exc_table[IVT_ITEMS];
57		54
58	SPINLOCK_INITIALIZE(exctbl_lock);	55	SPINLOCK_INITIALIZE(exctbl_lock);
59		56
60	/** Register exception handler	57	/** Register exception handler
61	*	58	*
62	* @param n Exception number	59	* @param n Exception number
63	* @param name Description	60	* @param name Description
64	* @param f Exception handler	61	* @param f Exception handler
65	*/	62	*/
66	iroutine exc_register(int n, const char *name, iroutine f)	63	iroutine exc_register(int n, const char *name, iroutine f)
67	{	64	{
68	ASSERT(n < IVT_ITEMS);	65	ASSERT(n < IVT_ITEMS);
69		66
70	iroutine old;	67	iroutine old;
71		68
72	spinlock_lock(&exctbl_lock);	69	spinlock_lock(&exctbl_lock);
73		70
74	old = exc_table[n].f;	71	old = exc_table[n].f;
75	exc_table[n].f = f;	72	exc_table[n].f = f;
76	exc_table[n].name = name;	73	exc_table[n].name = name;
77		74
78	spinlock_unlock(&exctbl_lock);	75	spinlock_unlock(&exctbl_lock);
79		76
80	return old;	77	return old;
81	}	78	}
82		79
83	/** Dispatch exception according to exception table	80	/** Dispatch exception according to exception table
84	*	81	*
85	* Called directly from the assembler code.	82	* Called directly from the assembler code.
86	* CPU is interrupts_disable()'d.	83	* CPU is interrupts_disable()'d.
87	*/	84	*/
88	void exc_dispatch(int n, istate_t *istate)	85	void exc_dispatch(int n, istate_t *istate)
89	{	86	{
90	ASSERT(n < IVT_ITEMS);	87	ASSERT(n < IVT_ITEMS);
91		88
92	#ifdef CONFIG_UDEBUG	89	#ifdef CONFIG_UDEBUG
93	if (THREAD) THREAD->udebug.uspace_state = istate;	90	if (THREAD) THREAD->udebug.uspace_state = istate;
94	#endif	91	#endif
95		92
96	exc_table[n].f(n + IVT_FIRST, istate);	93	exc_table[n].f(n + IVT_FIRST, istate);
97		94
98	#ifdef CONFIG_UDEBUG	95	#ifdef CONFIG_UDEBUG
99	if (THREAD) THREAD->udebug.uspace_state = NULL;	96	if (THREAD) THREAD->udebug.uspace_state = NULL;
100	#endif	97	#endif
101		98
102	/* This is a safe place to exit exiting thread */	99	/* This is a safe place to exit exiting thread */
103	if (THREAD && THREAD->interrupted && istate_from_uspace(istate))	100	if (THREAD && THREAD->interrupted && istate_from_uspace(istate))
104	thread_exit();	101	thread_exit();
105	}	102	}
106		103
107	/** Default 'null' exception handler */	104	/** Default 'null' exception handler */
108	static void exc_undef(int n, istate_t *istate)	105	static void exc_undef(int n, istate_t *istate)
109	{	106	{
110	fault_if_from_uspace(istate, "Unhandled exception %d.", n);	107	fault_if_from_uspace(istate, "Unhandled exception %d.", n);
111	panic("Unhandled exception %d.", n);	108	panic("Unhandled exception %d.", n);
112	}	109	}
113		110
114	#ifdef CONFIG_KCONSOLE	111	#ifdef CONFIG_KCONSOLE
115		112
116	/** kconsole cmd - print all exceptions */	113	/** kconsole cmd - print all exceptions */
117	static int cmd_exc_print(cmd_arg_t *argv)	114	static int cmd_exc_print(cmd_arg_t *argv)
118	{	115	{
119	#if (IVT_ITEMS > 0)	116	#if (IVT_ITEMS > 0)
120	unsigned int i;	117	unsigned int i;
121	char *symbol;	118	char *symbol;
122		119
123	spinlock_lock(&exctbl_lock);	120	spinlock_lock(&exctbl_lock);
124		121
125	#ifdef __32_BITS__	122	#ifdef __32_BITS__
126	printf("Exc Description Handler Symbol\n");	123	printf("Exc Description Handler Symbol\n");
127	printf("--- -------------------- ---------- --------\n");	124	printf("--- -------------------- ---------- --------\n");
128	#endif	125	#endif
129		126
130	#ifdef __64_BITS__	127	#ifdef __64_BITS__
131	printf("Exc Description Handler Symbol\n");	128	printf("Exc Description Handler Symbol\n");
132	printf("--- -------------------- ------------------ --------\n");	129	printf("--- -------------------- ------------------ --------\n");
133	#endif	130	#endif
134		131
135	for (i = 0; i < IVT_ITEMS; i++) {	132	for (i = 0; i < IVT_ITEMS; i++) {
136	#ifdef CONFIG_SYMTAB	-
137	symbol = get_symtab_entry((unative_t) exc_table[i].f);	133	symbol = symtab_fmt_name_lookup((unative_t) exc_table[i].f);
138	if (!symbol)	-
139	symbol = "not found";	-
140	#else	-
141	symbol = "n/a";	-
142	#endif	-
143		134
144	#ifdef __32_BITS__	135	#ifdef __32_BITS__
145	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,
146	exc_table[i].f, symbol);	137	exc_table[i].f, symbol);
147	#endif	138	#endif
148		139
149	#ifdef __64_BITS__	140	#ifdef __64_BITS__
150	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,
151	exc_table[i].f, symbol);	142	exc_table[i].f, symbol);
152	#endif	143	#endif
153		144
154	if (((i + 1) % 20) == 0) {	145	if (((i + 1) % 20) == 0) {
155	printf(" -- Press any key to continue -- ");	146	printf(" -- Press any key to continue -- ");
156	spinlock_unlock(&exctbl_lock);	147	spinlock_unlock(&exctbl_lock);
157	_getc(stdin);	148	_getc(stdin);
158	spinlock_lock(&exctbl_lock);	149	spinlock_lock(&exctbl_lock);
159	printf("\n");	150	printf("\n");
160	}	151	}
161	}	152	}
162		153
163	spinlock_unlock(&exctbl_lock);	154	spinlock_unlock(&exctbl_lock);
164	#endif	155	#endif
165		156
166	return 1;	157	return 1;
167	}	158	}
168		159
169		160
170	static cmd_info_t exc_info = {	161	static cmd_info_t exc_info = {
171	.name = "exc",	162	.name = "exc",
172	.description = "Print exception table.",	163	.description = "Print exception table.",
173	.func = cmd_exc_print,	164	.func = cmd_exc_print,
174	.help = NULL,	165	.help = NULL,
175	.argc = 0,	166	.argc = 0,
176	.argv = NULL	167	.argv = NULL
177	};	168	};
178		169
179	#endif	170	#endif
180		171
181	/** Initialize generic exception handling support */	172	/** Initialize generic exception handling support */
182	void exc_init(void)	173	void exc_init(void)
183	{	174	{
184	int i;	175	int i;
185		176
186	for (i = 0; i < IVT_ITEMS; i++)	177	for (i = 0; i < IVT_ITEMS; i++)
187	exc_register(i, "undef", (iroutine) exc_undef);	178	exc_register(i, "undef", (iroutine) exc_undef);
188		179
189	#ifdef CONFIG_KCONSOLE	180	#ifdef CONFIG_KCONSOLE
190	cmd_initialize(&exc_info);	181	cmd_initialize(&exc_info);
191	if (!cmd_register(&exc_info))	182	if (!cmd_register(&exc_info))
192	printf("Cannot register command %s\n", exc_info.name);	183	printf("Cannot register command %s\n", exc_info.name);
193	#endif	184	#endif
194	}	185	}
195		186
196	/** @}	187	/** @}
197	*/	188	*/
198		189

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/src/interrupt/interrupt.c – Rev 4132 → 4137