Beispiel #1
0
/*
 * Set a temporary breakpoint.
 * The instruction is changed immediately,
 * so the breakpoint does not have to be on the breakpoint list.
 */
db_breakpoint_t
db_set_temp_breakpoint(
	task_t		task,
	db_addr_t	addr)
{
	register db_breakpoint_t	bkpt;

	bkpt = db_breakpoint_alloc();
	if (bkpt == 0) {
	    db_printf("Too many breakpoints.\n");
	    return 0;
	}
	bkpt->task = task;
	bkpt->address = addr;
	bkpt->flags = BKPT_TEMP;
	bkpt->threads = 0;
	if (db_add_thread_breakpoint(bkpt, 0, 1, FALSE) < 0) {
	    if (bkpt)
		db_breakpoint_free(bkpt);
	    db_printf("Too many thread_breakpoints.\n");
	    return 0;
	}
	bkpt->bkpt_inst = db_get_task_value(bkpt->address, BKPT_SIZE, 
						FALSE, task);
	db_put_task_value(bkpt->address, BKPT_SIZE, 
				BKPT_SET(bkpt->bkpt_inst), task);
	return bkpt;
}
Beispiel #2
0
/*
 * Set a temporary breakpoint.
 * The instruction is changed immediately,
 * so the breakpoint does not have to be on the breakpoint list.
 */
db_breakpoint_t
db_set_temp_breakpoint(db_addr_t addr)
{
	db_breakpoint_t	bkpt;

#ifdef DB_VALID_BREAKPOINT
	if (!DB_VALID_BREAKPOINT(addr)) {
		db_printf("Not a valid address for a breakpoint.\n");
		return (0);
	}	
#endif

	bkpt = db_breakpoint_alloc();
	if (bkpt == 0) {
	    db_printf("Too many breakpoints.\n");
	    return (0);
	}

	bkpt->address = addr;
	bkpt->flags = BKPT_TEMP;
	bkpt->init_count = 1;
	bkpt->count = 1;

	bkpt->bkpt_inst = db_get_value(bkpt->address, BKPT_SIZE, FALSE);
	db_put_value(bkpt->address, BKPT_SIZE, BKPT_SET(bkpt->bkpt_inst));
	return bkpt;
}
Beispiel #3
0
void
db_set_breakpoints(void)
{
	register db_breakpoint_t bkpt;
	register task_t	task;
	db_expr_t	inst;
	thread_act_t	cur_act = current_act();
	task_t		cur_task =
				(cur_act && !cur_act->kernel_loaded) ?
					cur_act->task : TASK_NULL;
	boolean_t	inserted = TRUE;

	if (!db_breakpoints_inserted) {
	    for (bkpt = db_breakpoint_list; bkpt != 0; bkpt = bkpt->link) {
		if (bkpt->flags & BKPT_SET_IN_MEM)
		    continue;
		task = bkpt->task;
		if (bkpt->flags & BKPT_USR_GLOBAL) {
		    if ((bkpt->flags & BKPT_1ST_SET) == 0) {
		        if (cur_task == TASK_NULL)
			    continue;
		        task = cur_task;
		    } else
			bkpt->flags &= ~BKPT_1ST_SET;
		}
		if (DB_CHECK_ACCESS(bkpt->address, BKPT_SIZE, task)) {
		    inst = db_get_task_value(bkpt->address, BKPT_SIZE, FALSE,
								task);
		    if (inst == BKPT_SET(inst))
			continue;
		    bkpt->bkpt_inst = inst;
		    db_put_task_value(bkpt->address,
				BKPT_SIZE,
				BKPT_SET(bkpt->bkpt_inst), task);
		    bkpt->flags |= BKPT_SET_IN_MEM;
		} else {
		    inserted = FALSE;
		}
	    }
	    db_breakpoints_inserted = inserted;
	}
}
Beispiel #4
0
void
db_set_temp_breakpoint(db_breakpoint_t bkpt, db_addr_t addr)
{

	bkpt->map = NULL;
	bkpt->address = addr;
	/* bkpt->flags = BKPT_TEMP;	- this is not used */
	bkpt->init_count = 1;
	bkpt->count = 1;

	bkpt->bkpt_inst = db_get_value(bkpt->address, BKPT_SIZE, false);
	db_put_value(bkpt->address, BKPT_SIZE,
		BKPT_SET(bkpt->bkpt_inst, bkpt->address));
}
Beispiel #5
0
void
db_set_breakpoints(void)
{
	db_breakpoint_t	bkpt;

	if (!db_breakpoints_inserted) {
		for (bkpt = db_breakpoint_list; bkpt != 0; bkpt = bkpt->link) {
			bkpt->bkpt_inst =
			    db_get_value(bkpt->address, BKPT_SIZE, FALSE);
			db_put_value(bkpt->address, BKPT_SIZE,
			    BKPT_SET(bkpt->bkpt_inst));
		}
		db_breakpoints_inserted = TRUE;
	}
}
Beispiel #6
0
void
db_clear_breakpoints(void)
{
	register db_breakpoint_t bkpt, *bkptp;
	register task_t	 task;
	db_expr_t inst;
	thread_act_t	 cur_act = current_act();
	task_t	 cur_task = (cur_act && !cur_act->kernel_loaded) ?
			cur_act->task: TASK_NULL;

	if (db_breakpoints_inserted) {
	    bkptp = &db_breakpoint_list;
	    for (bkpt = *bkptp; bkpt; bkpt = *bkptp) {
		task = bkpt->task;
		if (bkpt->flags & BKPT_USR_GLOBAL) {
		    if (cur_task == TASK_NULL) {
			bkptp = &bkpt->link;
			continue;
		    }
		    task = cur_task;
		}
		if ((bkpt->flags & BKPT_SET_IN_MEM)
		    && DB_CHECK_ACCESS(bkpt->address, BKPT_SIZE, task)) {
		    inst = db_get_task_value(bkpt->address, BKPT_SIZE, FALSE, 
								task);
		    if (inst != BKPT_SET(inst)) {
			if (bkpt->flags & BKPT_USR_GLOBAL) {
			    bkptp = &bkpt->link;
			    continue;
			}
			db_force_delete_breakpoint(bkpt, 0, FALSE);
			*bkptp = bkpt->link;
		        db_breakpoint_free(bkpt);
			continue;
		    }
		    db_put_task_value(bkpt->address, BKPT_SIZE,
				 bkpt->bkpt_inst, task);
		    bkpt->flags &= ~BKPT_SET_IN_MEM;
		}
		bkptp = &bkpt->link;
	    }
	    db_breakpoints_inserted = FALSE;
	}
}