WebSVN – HelenOS – Diff – /branches/tracing/uspace/app/debug/breakpoint.c


/*
 * Copyright (c) 2008 Jiri Svoboda
 * 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 debug
 * @{
 */
/** @file
 */
 
#include <stdlib.h>
#include <adt/list.h>
#include <assert.h>
#include <futex.h>
#include <async.h>
#include <errno.h>
 
#include "include/arch.h"
#include "main.h"
#include "breakpoint.h"
 
static int last_bkpt_id = 0;
 
/** List of breakpoints that are set on the application */
link_t bkpts;
 
/** Pointer to currently active breakpoint or NULL if none */
breakpoint_t *active_bkpt = NULL;
 
void breakpoint_init(void)
{
    list_initialize(&bkpts);
}
 
int breakpoint_add(uintptr_t addr)
{
    breakpoint_t *old_b, *b;
    int rc;
 
    old_b = breakpoint_find_by_addr(addr);
    if (old_b != NULL) {
        printf("Breakpoint already exists at address 0x%lx. ID:%d\n",
            old_b->addr, old_b->id);
        return EEXISTS;
    }
 
    b = malloc(sizeof(breakpoint_t));
    if (!b) {
        printf("malloc failed\n");
        return ENOMEM;
    }
 
    b->addr = addr;
    rc = arch_breakpoint_set(b);
    if (rc < 0) {
        printf("Failed to add breakpoint at 0x%x\n", addr);
        return rc;
    }
 
    b->id = ++last_bkpt_id;
 
    list_append(&b->link, &bkpts);
 
    printf("Added breakpoint %d at address 0x%lx\n", b->id, b->addr);
 
    return 0;
}
 
/** Get breakpoint struct by breakpoint id.
 *
 * @param bid Breakpoint id.
 *
 * @return Pointer to breakpoint struct or NULL if not found.
 */
breakpoint_t *breakpoint_find_by_id(int bid)
{
    link_t *cur;
    breakpoint_t *b;
 
    for (cur = bkpts.next; cur != &bkpts; cur = cur->next) {
        b = list_get_instance(cur, breakpoint_t, link);
        if (b->id == bid) return b;
    }
 
    return NULL;
}
 
/** Get breakpoint struct by breakpoint id.
 *
 * @param bid Breakpoint id.
 *
 * @return Pointer to breakpoint struct or NULL if not found.
 */
breakpoint_t *breakpoint_find_by_addr(uintptr_t addr)
{
    link_t *cur;
    breakpoint_t *b;
 
    for (cur = bkpts.next; cur != &bkpts; cur = cur->next) {
        b = list_get_instance(cur, breakpoint_t, link);
        if (b->addr == addr) return b;
    }
 
    return NULL;
}
 
void breakpoint_remove(int bid)
{
    breakpoint_t *b;
    int rc;
 
    b = breakpoint_find_by_id(bid);
    if (!b) {
        printf("No such breakpoint\n");
        return;
    }
 
    rc = arch_breakpoint_remove(b);
    if (rc < 0) {
        printf("Failed to remove breakpoint %d\n", b->id);
        return;
    }
 
    list_remove(&b->link);
    free(b);
}
 
void breakpoint_list(void)
{
    breakpoint_t *b;
    link_t *cur;
    int count;
 
    count = 0;
    for (cur = bkpts.next; cur != &bkpts; cur = cur->next) {
        b = list_get_instance(cur, breakpoint_t, link);
        printf("%d at 0x%lx\n", b->id, b->addr);
        ++count;
    }
    if (!count) printf("No breakpoints set\n");
}
 
/** @}
 */
 

Rev 3006	Rev 4692
1	/*	1	/*
2	* Copyright (c) 2008 Jiri Svoboda	2	* Copyright (c) 2008 Jiri Svoboda
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 debug	29	/** @addtogroup debug
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <stdlib.h>	35	#include <stdlib.h>
36	#include <libadt/list.h>	36	#include <adt/list.h>
37	#include <assert.h>	37	#include <assert.h>
38	#include <futex.h>	38	#include <futex.h>
39	#include <async.h>	39	#include <async.h>
40	#include <errno.h>	40	#include <errno.h>
41		41
42	#include "include/arch.h"	42	#include "include/arch.h"
43	#include "main.h"	43	#include "main.h"
44	#include "breakpoint.h"	44	#include "breakpoint.h"
45		45
46	static int last_bkpt_id = 0;	46	static int last_bkpt_id = 0;
47		47
48	/** List of breakpoints that are set on the application */	48	/** List of breakpoints that are set on the application */
49	link_t bkpts;	49	link_t bkpts;
50		50
51	/** Pointer to currently active breakpoint or NULL if none */	51	/** Pointer to currently active breakpoint or NULL if none */
52	breakpoint_t *active_bkpt = NULL;	52	breakpoint_t *active_bkpt = NULL;
53		53
54	void breakpoint_init(void)	54	void breakpoint_init(void)
55	{	55	{
56	list_initialize(&bkpts);	56	list_initialize(&bkpts);
57	}	57	}
58		58
59	int breakpoint_add(uintptr_t addr)	59	int breakpoint_add(uintptr_t addr)
60	{	60	{
61	breakpoint_t old_b, b;	61	breakpoint_t old_b, b;
62	int rc;	62	int rc;
63		63
64	old_b = breakpoint_find_by_addr(addr);	64	old_b = breakpoint_find_by_addr(addr);
65	if (old_b != NULL) {	65	if (old_b != NULL) {
66	printf("Breakpoint already exists at address 0x%lx. ID:%d\n",	66	printf("Breakpoint already exists at address 0x%lx. ID:%d\n",
67	old_b->addr, old_b->id);	67	old_b->addr, old_b->id);
68	return EEXISTS;	68	return EEXISTS;
69	}	69	}
70		70
71	b = malloc(sizeof(breakpoint_t));	71	b = malloc(sizeof(breakpoint_t));
72	if (!b) {	72	if (!b) {
73	printf("malloc failed\n");	73	printf("malloc failed\n");
74	return ENOMEM;	74	return ENOMEM;
75	}	75	}
76		76
77	b->addr = addr;	77	b->addr = addr;
78	rc = arch_breakpoint_set(b);	78	rc = arch_breakpoint_set(b);
79	if (rc < 0) {	79	if (rc < 0) {
80	printf("Failed to add breakpoint at 0x%x\n", addr);	80	printf("Failed to add breakpoint at 0x%x\n", addr);
81	return rc;	81	return rc;
82	}	82	}
83		83
84	b->id = ++last_bkpt_id;	84	b->id = ++last_bkpt_id;
85		85
86	list_append(&b->link, &bkpts);	86	list_append(&b->link, &bkpts);
87		87
88	printf("Added breakpoint %d at address 0x%lx\n", b->id, b->addr);	88	printf("Added breakpoint %d at address 0x%lx\n", b->id, b->addr);
89		89
90	return 0;	90	return 0;
91	}	91	}
92		92
93	/** Get breakpoint struct by breakpoint id.	93	/** Get breakpoint struct by breakpoint id.
94	*	94	*
95	* @param bid Breakpoint id.	95	* @param bid Breakpoint id.
96	*	96	*
97	* @return Pointer to breakpoint struct or NULL if not found.	97	* @return Pointer to breakpoint struct or NULL if not found.
98	*/	98	*/
99	breakpoint_t *breakpoint_find_by_id(int bid)	99	breakpoint_t *breakpoint_find_by_id(int bid)
100	{	100	{
101	link_t *cur;	101	link_t *cur;
102	breakpoint_t *b;	102	breakpoint_t *b;
103		103
104	for (cur = bkpts.next; cur != &bkpts; cur = cur->next) {	104	for (cur = bkpts.next; cur != &bkpts; cur = cur->next) {
105	b = list_get_instance(cur, breakpoint_t, link);	105	b = list_get_instance(cur, breakpoint_t, link);
106	if (b->id == bid) return b;	106	if (b->id == bid) return b;
107	}	107	}
108		108
109	return NULL;	109	return NULL;
110	}	110	}
111		111
112	/** Get breakpoint struct by breakpoint id.	112	/** Get breakpoint struct by breakpoint id.
113	*	113	*
114	* @param bid Breakpoint id.	114	* @param bid Breakpoint id.
115	*	115	*
116	* @return Pointer to breakpoint struct or NULL if not found.	116	* @return Pointer to breakpoint struct or NULL if not found.
117	*/	117	*/
118	breakpoint_t *breakpoint_find_by_addr(uintptr_t addr)	118	breakpoint_t *breakpoint_find_by_addr(uintptr_t addr)
119	{	119	{
120	link_t *cur;	120	link_t *cur;
121	breakpoint_t *b;	121	breakpoint_t *b;
122		122
123	for (cur = bkpts.next; cur != &bkpts; cur = cur->next) {	123	for (cur = bkpts.next; cur != &bkpts; cur = cur->next) {
124	b = list_get_instance(cur, breakpoint_t, link);	124	b = list_get_instance(cur, breakpoint_t, link);
125	if (b->addr == addr) return b;	125	if (b->addr == addr) return b;
126	}	126	}
127		127
128	return NULL;	128	return NULL;
129	}	129	}
130		130
131	void breakpoint_remove(int bid)	131	void breakpoint_remove(int bid)
132	{	132	{
133	breakpoint_t *b;	133	breakpoint_t *b;
134	int rc;	134	int rc;
135		135
136	b = breakpoint_find_by_id(bid);	136	b = breakpoint_find_by_id(bid);
137	if (!b) {	137	if (!b) {
138	printf("No such breakpoint\n");	138	printf("No such breakpoint\n");
139	return;	139	return;
140	}	140	}
141		141
142	rc = arch_breakpoint_remove(b);	142	rc = arch_breakpoint_remove(b);
143	if (rc < 0) {	143	if (rc < 0) {
144	printf("Failed to remove breakpoint %d\n", b->id);	144	printf("Failed to remove breakpoint %d\n", b->id);
145	return;	145	return;
146	}	146	}
147		147
148	list_remove(&b->link);	148	list_remove(&b->link);
149	free(b);	149	free(b);
150	}	150	}
151		151
152	void breakpoint_list(void)	152	void breakpoint_list(void)
153	{	153	{
154	breakpoint_t *b;	154	breakpoint_t *b;
155	link_t *cur;	155	link_t *cur;
156	int count;	156	int count;
157		157
158	count = 0;	158	count = 0;
159	for (cur = bkpts.next; cur != &bkpts; cur = cur->next) {	159	for (cur = bkpts.next; cur != &bkpts; cur = cur->next) {
160	b = list_get_instance(cur, breakpoint_t, link);	160	b = list_get_instance(cur, breakpoint_t, link);
161	printf("%d at 0x%lx\n", b->id, b->addr);	161	printf("%d at 0x%lx\n", b->id, b->addr);
162	++count;	162	++count;
163	}	163	}
164	if (!count) printf("No breakpoints set\n");	164	if (!count) printf("No breakpoints set\n");
165	}	165	}
166		166
167	/** @}	167	/** @}
168	*/	168	*/
169		169

Subversion Repositories HelenOS

(root)/branches/tracing/uspace/app/debug/breakpoint.c – Rev 3006 → 4692