WebSVN – HelenOS – Diff – /branches/tracing/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>
#include <tdebug/tdebug.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);
 
    if (THREAD && istate_from_uspace(istate)) {
        /* Record userspace state */
        THREAD->tdebug.uspace_state = istate;
    }
 
    exc_table[n].f(n + IVT_FIRST, istate);
 
    if (THREAD && istate_from_uspace(istate)) {
        /* Clear it again (mostly for dev. and debugging purposes) */
        THREAD->tdebug.uspace_state = NULL;
    }
 
    /* 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)
{
#if (IVT_ITEMS > 0)
    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);
#endif
   
    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 2745	Rev 2787
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	#include <tdebug/tdebug.h>
50		51
51	static struct {	52	static struct {
52	const char *name;	53	const char *name;
53	iroutine f;	54	iroutine f;
54	} exc_table[IVT_ITEMS];	55	} exc_table[IVT_ITEMS];
55		56
56	SPINLOCK_INITIALIZE(exctbl_lock);	57	SPINLOCK_INITIALIZE(exctbl_lock);
57		58
58	/** Register exception handler	59	/** Register exception handler
59	*	60	*
60	* @param n Exception number	61	* @param n Exception number
61	* @param name Description	62	* @param name Description
62	* @param f Exception handler	63	* @param f Exception handler
63	*/	64	*/
64	iroutine exc_register(int n, const char *name, iroutine f)	65	iroutine exc_register(int n, const char *name, iroutine f)
65	{	66	{
66	ASSERT(n < IVT_ITEMS);	67	ASSERT(n < IVT_ITEMS);
67		68
68	iroutine old;	69	iroutine old;
69		70
70	spinlock_lock(&exctbl_lock);	71	spinlock_lock(&exctbl_lock);
71		72
72	old = exc_table[n].f;	73	old = exc_table[n].f;
73	exc_table[n].f = f;	74	exc_table[n].f = f;
74	exc_table[n].name = name;	75	exc_table[n].name = name;
75		76
76	spinlock_unlock(&exctbl_lock);	77	spinlock_unlock(&exctbl_lock);
77		78
78	return old;	79	return old;
79	}	80	}
80		81
81	/** Dispatch exception according to exception table	82	/** Dispatch exception according to exception table
82	*	83	*
83	* Called directly from the assembler code.	84	* Called directly from the assembler code.
84	* CPU is interrupts_disable()'d.	85	* CPU is interrupts_disable()'d.
85	*/	86	*/
86	void exc_dispatch(int n, istate_t *istate)	87	void exc_dispatch(int n, istate_t *istate)
87	{	88	{
88	ASSERT(n < IVT_ITEMS);	89	ASSERT(n < IVT_ITEMS);
-		90
-		91	if (THREAD && istate_from_uspace(istate)) {
-		92	/* Record userspace state */
-		93	THREAD->tdebug.uspace_state = istate;
89		94	}
-		95
90	exc_table[n].f(n + IVT_FIRST, istate);	96	exc_table[n].f(n + IVT_FIRST, istate);
-		97
-		98	if (THREAD && istate_from_uspace(istate)) {
-		99	/* Clear it again (mostly for dev. and debugging purposes) */
-		100	THREAD->tdebug.uspace_state = NULL;
-		101	}
-		102
91	/* This is a safe place to exit exiting thread */	103	/* This is a safe place to exit exiting thread */
92	if (THREAD && THREAD->interrupted && istate_from_uspace(istate))	104	if (THREAD && THREAD->interrupted && istate_from_uspace(istate))
93	thread_exit();	105	thread_exit();
94	}	106	}
95		107
96	/** Default 'null' exception handler */	108	/** Default 'null' exception handler */
97	static void exc_undef(int n, istate_t *istate)	109	static void exc_undef(int n, istate_t *istate)
98	{	110	{
99	fault_if_from_uspace(istate, "Unhandled exception %d.", n);	111	fault_if_from_uspace(istate, "Unhandled exception %d.", n);
100	panic("Unhandled exception %d.", n);	112	panic("Unhandled exception %d.", n);
101	}	113	}
102		114
103	/** kconsole cmd - print all exceptions */	115	/** kconsole cmd - print all exceptions */
104	static int exc_print_cmd(cmd_arg_t *argv)	116	static int exc_print_cmd(cmd_arg_t *argv)
105	{	117	{
106	#if (IVT_ITEMS > 0)	118	#if (IVT_ITEMS > 0)
107	unsigned int i;	119	unsigned int i;
108	char *symbol;	120	char *symbol;
109		121
110	spinlock_lock(&exctbl_lock);	122	spinlock_lock(&exctbl_lock);
111		123
112	if (sizeof(void *) == 4) {	124	if (sizeof(void *) == 4) {
113	printf("Exc Description Handler Symbol\n");	125	printf("Exc Description Handler Symbol\n");
114	printf("--- -------------------- ---------- --------\n");	126	printf("--- -------------------- ---------- --------\n");
115	} else {	127	} else {
116	printf("Exc Description Handler Symbol\n");	128	printf("Exc Description Handler Symbol\n");
117	printf("--- -------------------- ------------------ --------\n");	129	printf("--- -------------------- ------------------ --------\n");
118	}	130	}
119		131
120	for (i = 0; i < IVT_ITEMS; i++) {	132	for (i = 0; i < IVT_ITEMS; i++) {
121	symbol = get_symtab_entry((unative_t) exc_table[i].f);	133	symbol = get_symtab_entry((unative_t) exc_table[i].f);
122	if (!symbol)	134	if (!symbol)
123	symbol = "not found";	135	symbol = "not found";
124		136
125	if (sizeof(void *) == 4)	137	if (sizeof(void *) == 4)
126	printf("%-3u %-20s %#10zx %s\n", i + IVT_FIRST, exc_table[i].name,	138	printf("%-3u %-20s %#10zx %s\n", i + IVT_FIRST, exc_table[i].name,
127	exc_table[i].f, symbol);	139	exc_table[i].f, symbol);
128	else	140	else
129	printf("%-3u %-20s %#18zx %s\n", i + IVT_FIRST, exc_table[i].name,	141	printf("%-3u %-20s %#18zx %s\n", i + IVT_FIRST, exc_table[i].name,
130	exc_table[i].f, symbol);	142	exc_table[i].f, symbol);
131		143
132	if (((i + 1) % 20) == 0) {	144	if (((i + 1) % 20) == 0) {
133	printf(" -- Press any key to continue -- ");	145	printf(" -- Press any key to continue -- ");
134	spinlock_unlock(&exctbl_lock);	146	spinlock_unlock(&exctbl_lock);
135	getc(stdin);	147	getc(stdin);
136	spinlock_lock(&exctbl_lock);	148	spinlock_lock(&exctbl_lock);
137	printf("\n");	149	printf("\n");
138	}	150	}
139	}	151	}
140		152
141	spinlock_unlock(&exctbl_lock);	153	spinlock_unlock(&exctbl_lock);
142	#endif	154	#endif
143		155
144	return 1;	156	return 1;
145	}	157	}
146		158
147	static cmd_info_t exc_info = {	159	static cmd_info_t exc_info = {
148	.name = "exc",	160	.name = "exc",
149	.description = "Print exception table.",	161	.description = "Print exception table.",
150	.func = exc_print_cmd,	162	.func = exc_print_cmd,
151	.help = NULL,	163	.help = NULL,
152	.argc = 0,	164	.argc = 0,
153	.argv = NULL	165	.argv = NULL
154	};	166	};
155		167
156	/** Initialize generic exception handling support */	168	/** Initialize generic exception handling support */
157	void exc_init(void)	169	void exc_init(void)
158	{	170	{
159	int i;	171	int i;
160		172
161	for (i=0;i < IVT_ITEMS; i++)	173	for (i=0;i < IVT_ITEMS; i++)
162	exc_register(i, "undef", (iroutine) exc_undef);	174	exc_register(i, "undef", (iroutine) exc_undef);
163		175
164	cmd_initialize(&exc_info);	176	cmd_initialize(&exc_info);
165	if (!cmd_register(&exc_info))	177	if (!cmd_register(&exc_info))
166	panic("could not register command %s\n", exc_info.name);	178	panic("could not register command %s\n", exc_info.name);
167	}	179	}
168		180
169	/** @}	181	/** @}
170	*/	182	*/
171		183

Subversion Repositories HelenOS

(root)/branches/tracing/kernel/generic/src/interrupt/interrupt.c – Rev 2745 → 2787