WebSVN – HelenOS – Diff – /branches/tracing/kernel/generic/src/udebug/udebug.c


/** @addtogroup generic
 * @{
 */
 
/**
 * @file
 * @brief   Tdebug.
 */
 
#include <synch/waitq.h>
#include <console/klog.h>
#include <udebug/udebug.h>
#include <arch.h>
 
void udebug_stoppable_begin(void)
{
    int nsc;
    call_t *db_call;
 
    spinlock_lock(&TASK->lock);
 
    nsc = --TASK->not_stoppable_count;
    db_call = TASK->debug_begin_call;
 
    if (TASK->stop_request == true) {
        klog_printf("udebug_stoppable_begin");
        klog_printf(" - nsc := %d", nsc);
    }
 
    if (TASK->stop_request == true && nsc == 0) {
        TASK->stop_request = false;
        TASK->debug_begin_call = NULL;
        spinlock_unlock(&TASK->lock);
 
        IPC_SET_RETVAL(db_call->data, 0);
        klog_printf("udebug_stoppable_begin/ipc_answer");
        ipc_answer(&TASK->answerbox, db_call);     
    } else {
            spinlock_unlock(&TASK->lock);
    }
}
 
void udebug_stoppable_end(void)
{
restart:
    spinlock_lock(&TASK->lock);
 
    if (TASK->stop_request) {
        TASK->debug_begin_call = NULL;
        spinlock_unlock(&TASK->lock);
        klog_printf("udebug_stoppable_end: waitq_sleep");
        waitq_sleep(&THREAD->go_wq);
        goto restart;
        /* must try again - have to lose stoppability atomically */
    } else {
        ++TASK->not_stoppable_count;
        spinlock_unlock(&TASK->lock);
    }
}
 
void udebug_syscall_event(unative_t a1, unative_t a2, unative_t a3,
    unative_t a4, unative_t a5, unative_t a6, unative_t id, unative_t rc)
{
    call_t *call;
 
    spinlock_lock(&TASK->lock);
    /* being debugged + have go */
    if (TASK->being_debugged && !TASK->stop_request) { /* locking! */
        klog_printf("udebug_syscall_event");
        call = TASK->debug_go_call;
        IPC_SET_RETVAL(call->data, 0);
        IPC_SET_ARG1(call->data, UDEBUG_EVENT_SYSCALL);
        IPC_SET_ARG2(call->data, id);
        IPC_SET_ARG3(call->data, rc);
        klog_printf("udebug_syscall_event/ipc_answer");
 
        THREAD->syscall_args[0] = a1;
        THREAD->syscall_args[1] = a2;
        THREAD->syscall_args[2] = a3;
        THREAD->syscall_args[3] = a4;
        THREAD->syscall_args[4] = a5;
        THREAD->syscall_args[5] = a6;
 
        ipc_answer(&TASK->answerbox, TASK->debug_go_call);
        spinlock_unlock(&TASK->lock);
        waitq_sleep(&THREAD->go_wq);
    } else {
        spinlock_unlock(&TASK->lock);
    }
}
 
/** @}
 */
 

Rev 2805	Rev 2813
1	/** @addtogroup generic	1	/** @addtogroup generic
2	* @{	2	* @{
3	*/	3	*/
4		4
5	/**	5	/**
6	* @file	6	* @file
7	* @brief Tdebug.	7	* @brief Tdebug.
8	*/	8	*/
9		9
10	#include <synch/waitq.h>	10	#include <synch/waitq.h>
11	#include <console/klog.h>	11	#include <console/klog.h>
12	#include <udebug.h>	12	#include <udebug/udebug.h>
13	#include <arch.h>	13	#include <arch.h>
14		14
15	void udebug_stoppable_begin(void)	15	void udebug_stoppable_begin(void)
16	{	16	{
17	int nsc;	17	int nsc;
18	call_t *db_call;	18	call_t *db_call;
19		19
20	spinlock_lock(&TASK->lock);	20	spinlock_lock(&TASK->lock);
21		21
22	nsc = --TASK->not_stoppable_count;	22	nsc = --TASK->not_stoppable_count;
23	db_call = TASK->debug_begin_call;	23	db_call = TASK->debug_begin_call;
24		24
25	if (TASK->stop_request == true) {	25	if (TASK->stop_request == true) {
26	klog_printf("udebug_stoppable_begin");	26	klog_printf("udebug_stoppable_begin");
27	klog_printf(" - nsc := %d", nsc);	27	klog_printf(" - nsc := %d", nsc);
28	}	28	}
29		29
30	if (TASK->stop_request == true && nsc == 0) {	30	if (TASK->stop_request == true && nsc == 0) {
31	TASK->stop_request = false;	31	TASK->stop_request = false;
32	TASK->debug_begin_call = NULL;	32	TASK->debug_begin_call = NULL;
33	spinlock_unlock(&TASK->lock);	33	spinlock_unlock(&TASK->lock);
34		34
35	IPC_SET_RETVAL(db_call->data, 0);	35	IPC_SET_RETVAL(db_call->data, 0);
36	klog_printf("udebug_stoppable_begin/ipc_answer");	36	klog_printf("udebug_stoppable_begin/ipc_answer");
37	ipc_answer(&TASK->answerbox, db_call);	37	ipc_answer(&TASK->answerbox, db_call);
38	} else {	38	} else {
39	spinlock_unlock(&TASK->lock);	39	spinlock_unlock(&TASK->lock);
40	}	40	}
41	}	41	}
42		42
43	void udebug_stoppable_end(void)	43	void udebug_stoppable_end(void)
44	{	44	{
45	restart:	45	restart:
46	spinlock_lock(&TASK->lock);	46	spinlock_lock(&TASK->lock);
47		47
48	if (TASK->stop_request) {	48	if (TASK->stop_request) {
49	TASK->debug_begin_call = NULL;	49	TASK->debug_begin_call = NULL;
50	spinlock_unlock(&TASK->lock);	50	spinlock_unlock(&TASK->lock);
51	klog_printf("udebug_stoppable_end: waitq_sleep");	51	klog_printf("udebug_stoppable_end: waitq_sleep");
52	waitq_sleep(&THREAD->go_wq);	52	waitq_sleep(&THREAD->go_wq);
53	goto restart;	53	goto restart;
54	/* must try again - have to lose stoppability atomically */	54	/* must try again - have to lose stoppability atomically */
55	} else {	55	} else {
56	++TASK->not_stoppable_count;	56	++TASK->not_stoppable_count;
57	spinlock_unlock(&TASK->lock);	57	spinlock_unlock(&TASK->lock);
58	}	58	}
59	}	59	}
60		60
61	void udebug_syscall_event(unative_t a1, unative_t a2, unative_t a3,	61	void udebug_syscall_event(unative_t a1, unative_t a2, unative_t a3,
62	unative_t a4, unative_t a5, unative_t a6, unative_t id, unative_t rc)	62	unative_t a4, unative_t a5, unative_t a6, unative_t id, unative_t rc)
63	{	63	{
64	call_t *call;	64	call_t *call;
65		65
66	spinlock_lock(&TASK->lock);	66	spinlock_lock(&TASK->lock);
67	/* being debugged + have go */	67	/* being debugged + have go */
68	if (TASK->being_debugged && !TASK->stop_request) { /* locking! */	68	if (TASK->being_debugged && !TASK->stop_request) { /* locking! */
69	klog_printf("udebug_syscall_event");	69	klog_printf("udebug_syscall_event");
70	call = TASK->debug_go_call;	70	call = TASK->debug_go_call;
71	IPC_SET_RETVAL(call->data, 0);	71	IPC_SET_RETVAL(call->data, 0);
72	IPC_SET_ARG1(call->data, UDEBUG_EVENT_SYSCALL);	72	IPC_SET_ARG1(call->data, UDEBUG_EVENT_SYSCALL);
73	IPC_SET_ARG2(call->data, id);	73	IPC_SET_ARG2(call->data, id);
74	IPC_SET_ARG3(call->data, rc);	74	IPC_SET_ARG3(call->data, rc);
75	klog_printf("udebug_syscall_event/ipc_answer");	75	klog_printf("udebug_syscall_event/ipc_answer");
76		76
77	THREAD->syscall_args[0] = a1;	77	THREAD->syscall_args[0] = a1;
78	THREAD->syscall_args[1] = a2;	78	THREAD->syscall_args[1] = a2;
79	THREAD->syscall_args[2] = a3;	79	THREAD->syscall_args[2] = a3;
80	THREAD->syscall_args[3] = a4;	80	THREAD->syscall_args[3] = a4;
81	THREAD->syscall_args[4] = a5;	81	THREAD->syscall_args[4] = a5;
82	THREAD->syscall_args[5] = a6;	82	THREAD->syscall_args[5] = a6;
83		83
84	ipc_answer(&TASK->answerbox, TASK->debug_go_call);	84	ipc_answer(&TASK->answerbox, TASK->debug_go_call);
85	spinlock_unlock(&TASK->lock);	85	spinlock_unlock(&TASK->lock);
86	waitq_sleep(&THREAD->go_wq);	86	waitq_sleep(&THREAD->go_wq);
87	} else {	87	} else {
88	spinlock_unlock(&TASK->lock);	88	spinlock_unlock(&TASK->lock);
89	}	89	}
90	}	90	}
91		91
92	/** @}	92	/** @}
93	*/	93	*/
94		94

Subversion Repositories HelenOS

(root)/branches/tracing/kernel/generic/src/udebug/udebug.c @ 2894 – Rev 2805 → 2813