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;
    ipl_t ipl;
 
    ipl = interrupts_disable();
    spinlock_lock(&TASK->lock);
 
    nsc = --TASK->not_stoppable_count;
    db_call = TASK->debug_begin_call;
 
    if (TASK->dt_state == UDEBUG_TS_BEGINNING) {
        klog_printf("udebug_stoppable_begin");
        klog_printf(" - nsc := %d", nsc);
    }
 
    if (TASK->dt_state == UDEBUG_TS_BEGINNING && nsc == 0) {
        TASK->dt_state = UDEBUG_TS_ACTIVE;
        TASK->debug_begin_call = NULL;
        spinlock_unlock(&TASK->lock);
        interrupts_restore(ipl);
 
        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);
        interrupts_restore(ipl);
    }
}
 
void udebug_stoppable_end(void)
{
    ipl_t ipl;
 
restart:
    ipl = interrupts_disable();
    spinlock_lock(&TASK->lock);
 
    if ((TASK->dt_state == UDEBUG_TS_BEGINNING ||
        TASK->dt_state == UDEBUG_TS_ACTIVE) &&
        THREAD->debug_stop == true) {
        TASK->debug_begin_call = NULL;
        spinlock_unlock(&TASK->lock);
        interrupts_restore(ipl);
 
        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);
        interrupts_restore(ipl);
    }
}
 
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;
    ipl_t ipl;
 
    ipl = interrupts_disable();
    spinlock_lock(&THREAD->debug_lock);
 
    /* Must only generate events when in debugging session and have go */
    if (THREAD->debug_active == true &&
        THREAD->debug_stop == false) {
        klog_printf("udebug_syscall_event");
        call = THREAD->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;
 
        /*
         * Make sure debug_stop is true when going to sleep
         * in case we get woken up by DEBUG_END. (At which
         * point it must be back to the initial true value).
         */
        THREAD->debug_stop = true;
 
        THREAD->cur_event = UDEBUG_EVENT_SYSCALL;
        spinlock_unlock(&THREAD->debug_lock);
 
        spinlock_lock(&TASK->lock);
        ipc_answer(&TASK->answerbox, THREAD->debug_go_call);
        spinlock_unlock(&TASK->lock);
 
        interrupts_restore(ipl);
 
        waitq_sleep(&THREAD->go_wq);
    } else {
        spinlock_unlock(&THREAD->debug_lock);
        interrupts_restore(ipl);
    }
}
 
/** @}
 */
 

Rev 2854	Rev 2866
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/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	ipl_t ipl;	19	ipl_t ipl;
20		20
21	ipl = interrupts_disable();	21	ipl = interrupts_disable();
22	spinlock_lock(&TASK->lock);	22	spinlock_lock(&TASK->lock);
23		23
24	nsc = --TASK->not_stoppable_count;	24	nsc = --TASK->not_stoppable_count;
25	db_call = TASK->debug_begin_call;	25	db_call = TASK->debug_begin_call;
26		26
27	if (TASK->dt_state == UDEBUG_TS_BEGINNING) {	27	if (TASK->dt_state == UDEBUG_TS_BEGINNING) {
28	klog_printf("udebug_stoppable_begin");	28	klog_printf("udebug_stoppable_begin");
29	klog_printf(" - nsc := %d", nsc);	29	klog_printf(" - nsc := %d", nsc);
30	}	30	}
31		31
32	if (TASK->dt_state == UDEBUG_TS_BEGINNING && nsc == 0) {	32	if (TASK->dt_state == UDEBUG_TS_BEGINNING && nsc == 0) {
33	TASK->dt_state = UDEBUG_TS_ACTIVE;	33	TASK->dt_state = UDEBUG_TS_ACTIVE;
34	TASK->debug_begin_call = NULL;	34	TASK->debug_begin_call = NULL;
35	spinlock_unlock(&TASK->lock);	35	spinlock_unlock(&TASK->lock);
36	interrupts_restore(ipl);	36	interrupts_restore(ipl);
37		37
38	IPC_SET_RETVAL(db_call->data, 0);	38	IPC_SET_RETVAL(db_call->data, 0);
39	klog_printf("udebug_stoppable_begin/ipc_answer");	39	klog_printf("udebug_stoppable_begin/ipc_answer");
40	ipc_answer(&TASK->answerbox, db_call);	40	ipc_answer(&TASK->answerbox, db_call);
41	} else {	41	} else {
42	spinlock_unlock(&TASK->lock);	42	spinlock_unlock(&TASK->lock);
43	interrupts_restore(ipl);	43	interrupts_restore(ipl);
44	}	44	}
45	}	45	}
46		46
47	void udebug_stoppable_end(void)	47	void udebug_stoppable_end(void)
48	{	48	{
49	ipl_t ipl;	49	ipl_t ipl;
50		50
51	restart:	51	restart:
52	ipl = interrupts_disable();	52	ipl = interrupts_disable();
53	spinlock_lock(&TASK->lock);	53	spinlock_lock(&TASK->lock);
54		54
55	if ((TASK->dt_state == UDEBUG_TS_BEGINNING \|\|	55	if ((TASK->dt_state == UDEBUG_TS_BEGINNING \|\|
56	TASK->dt_state == UDEBUG_TS_ACTIVE) &&	56	TASK->dt_state == UDEBUG_TS_ACTIVE) &&
57	THREAD->debug_stop == true) {	57	THREAD->debug_stop == true) {
58	TASK->debug_begin_call = NULL;	58	TASK->debug_begin_call = NULL;
59	spinlock_unlock(&TASK->lock);	59	spinlock_unlock(&TASK->lock);
60	interrupts_restore(ipl);	60	interrupts_restore(ipl);
61		61
62	klog_printf("udebug_stoppable_end: waitq_sleep");	62	klog_printf("udebug_stoppable_end: waitq_sleep");
63	waitq_sleep(&THREAD->go_wq);	63	waitq_sleep(&THREAD->go_wq);
64	goto restart;	64	goto restart;
65	/* must try again - have to lose stoppability atomically */	65	/* must try again - have to lose stoppability atomically */
66	} else {	66	} else {
67	++TASK->not_stoppable_count;	67	++TASK->not_stoppable_count;
68	spinlock_unlock(&TASK->lock);	68	spinlock_unlock(&TASK->lock);
69	interrupts_restore(ipl);	69	interrupts_restore(ipl);
70	}	70	}
71	}	71	}
72		72
73	void udebug_syscall_event(unative_t a1, unative_t a2, unative_t a3,	73	void udebug_syscall_event(unative_t a1, unative_t a2, unative_t a3,
74	unative_t a4, unative_t a5, unative_t a6, unative_t id, unative_t rc)	74	unative_t a4, unative_t a5, unative_t a6, unative_t id, unative_t rc)
75	{	75	{
76	call_t *call;	76	call_t *call;
77	ipl_t ipl;	77	ipl_t ipl;
78		78
79	ipl = interrupts_disable();	79	ipl = interrupts_disable();
80	spinlock_lock(&THREAD->debug_lock);	80	spinlock_lock(&THREAD->debug_lock);
81		81
82	/* Must only generate events when in debugging session and have go */	82	/* Must only generate events when in debugging session and have go */
83	if (THREAD->debug_active == true &&	83	if (THREAD->debug_active == true &&
84	THREAD->debug_stop == false) {	84	THREAD->debug_stop == false) {
85	klog_printf("udebug_syscall_event");	85	klog_printf("udebug_syscall_event");
86	call = THREAD->debug_go_call;	86	call = THREAD->debug_go_call;
87	IPC_SET_RETVAL(call->data, 0);	87	IPC_SET_RETVAL(call->data, 0);
88	IPC_SET_ARG1(call->data, UDEBUG_EVENT_SYSCALL);	88	IPC_SET_ARG1(call->data, UDEBUG_EVENT_SYSCALL);
89	IPC_SET_ARG2(call->data, id);	89	IPC_SET_ARG2(call->data, id);
90	IPC_SET_ARG3(call->data, rc);	90	IPC_SET_ARG3(call->data, rc);
91	klog_printf("udebug_syscall_event/ipc_answer");	91	klog_printf("udebug_syscall_event/ipc_answer");
92		92
93	THREAD->syscall_args[0] = a1;	93	THREAD->syscall_args[0] = a1;
94	THREAD->syscall_args[1] = a2;	94	THREAD->syscall_args[1] = a2;
95	THREAD->syscall_args[2] = a3;	95	THREAD->syscall_args[2] = a3;
96	THREAD->syscall_args[3] = a4;	96	THREAD->syscall_args[3] = a4;
97	THREAD->syscall_args[4] = a5;	97	THREAD->syscall_args[4] = a5;
98	THREAD->syscall_args[5] = a6;	98	THREAD->syscall_args[5] = a6;
99		99
100	/*	100	/*
101	* Make sure debug_stop is true when going to sleep	101	* Make sure debug_stop is true when going to sleep
102	* in case we get woken up by DEBUG_END. (At which	102	* in case we get woken up by DEBUG_END. (At which
103	* point it must be back to the initial true value).	103	* point it must be back to the initial true value).
104	*/	104	*/
105	THREAD->debug_stop = true;	105	THREAD->debug_stop = true;
-		106
-		107	THREAD->cur_event = UDEBUG_EVENT_SYSCALL;
106	spinlock_unlock(&THREAD->debug_lock);	108	spinlock_unlock(&THREAD->debug_lock);
107		109
108	spinlock_lock(&TASK->lock);	110	spinlock_lock(&TASK->lock);
109	ipc_answer(&TASK->answerbox, THREAD->debug_go_call);	111	ipc_answer(&TASK->answerbox, THREAD->debug_go_call);
110	spinlock_unlock(&TASK->lock);	112	spinlock_unlock(&TASK->lock);
111		113
112	interrupts_restore(ipl);	114	interrupts_restore(ipl);
113		115
114	waitq_sleep(&THREAD->go_wq);	116	waitq_sleep(&THREAD->go_wq);
115	} else {	117	} else {
116	spinlock_unlock(&THREAD->debug_lock);	118	spinlock_unlock(&THREAD->debug_lock);
117	interrupts_restore(ipl);	119	interrupts_restore(ipl);
118	}	120	}
119	}	121	}
120		122
121	/** @}	123	/** @}
122	*/	124	*/
123		125

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(root)/branches/tracing/kernel/generic/src/udebug/udebug.c @ 3127 – Rev 2854 → 2866