140 lines
3 KiB
C
140 lines
3 KiB
C
/* Hardware event manager.
|
|
Copyright (C) 1998 Free Software Foundation, Inc.
|
|
Contributed by Cygnus Support.
|
|
|
|
This file is part of GDB, the GNU debugger.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along
|
|
with this program; if not, write to the Free Software Foundation, Inc.,
|
|
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
|
|
|
|
|
#include "sim-main.h"
|
|
#include "hw-base.h"
|
|
|
|
#include "sim-events.h"
|
|
|
|
|
|
/* The hw-events object is implemented using sim-events */
|
|
|
|
struct hw_event {
|
|
void *data;
|
|
struct hw *me;
|
|
hw_event_callback *callback;
|
|
sim_event *real;
|
|
struct hw_event_data *entry;
|
|
};
|
|
|
|
struct hw_event_data {
|
|
struct hw_event event;
|
|
struct hw_event_data *next;
|
|
struct hw_event_data **prev;
|
|
};
|
|
|
|
void
|
|
create_hw_event_data (struct hw *me)
|
|
{
|
|
/* NOP */
|
|
}
|
|
|
|
void
|
|
delete_hw_event_data (struct hw *me)
|
|
{
|
|
if (me->events_of_hw != NULL)
|
|
hw_abort (me, "stray events");
|
|
}
|
|
|
|
|
|
static void
|
|
delete_hw_event (struct hw *me,
|
|
struct hw_event **event)
|
|
{
|
|
struct hw_event_data *entry = (*event)->entry;
|
|
*(entry->prev) = entry->next;
|
|
entry->next->prev = entry->prev;
|
|
(*event) = NULL;
|
|
}
|
|
|
|
|
|
static void
|
|
create_hw_event (struct hw *me,
|
|
struct hw_event **event)
|
|
{
|
|
struct hw_event_data *entry = HW_ZALLOC (me, struct hw_event_data);
|
|
entry->next = me->events_of_hw;
|
|
entry->prev = &me->events_of_hw;
|
|
me->events_of_hw->prev = &entry->next;
|
|
me->events_of_hw = entry;
|
|
(*event) = &entry->event;
|
|
}
|
|
|
|
|
|
|
|
/* Pass the H/W event onto the real callback */
|
|
|
|
static void
|
|
bounce_hw_event (SIM_DESC sd,
|
|
void *data)
|
|
{
|
|
/* save the data */
|
|
struct hw_event *event = (struct hw_event*)data;
|
|
struct hw *me = event->me;
|
|
void *event_data = event->data;
|
|
hw_event_callback *callback = event->callback;
|
|
hw_free (me, data);
|
|
event = NULL;
|
|
callback (me, event_data);
|
|
}
|
|
|
|
|
|
|
|
/* Map onto the event functions */
|
|
|
|
struct hw_event *
|
|
hw_event_queue_schedule (struct hw *me,
|
|
signed64 delta_time,
|
|
hw_event_callback *callback,
|
|
void *data)
|
|
{
|
|
struct hw_event *event;
|
|
create_hw_event (me, &event);
|
|
/* fill it in */
|
|
event->data = data;
|
|
event->callback = callback;
|
|
event->me = me;
|
|
event->real = sim_events_schedule (hw_system (me),
|
|
delta_time,
|
|
bounce_hw_event,
|
|
event);
|
|
return event;
|
|
}
|
|
|
|
|
|
void
|
|
hw_event_queue_deschedule (struct hw *me,
|
|
struct hw_event *event_to_remove)
|
|
{
|
|
/* remove it from the event queue */
|
|
sim_events_deschedule (hw_system (me),
|
|
event_to_remove->real);
|
|
delete_hw_event (me, &event_to_remove);
|
|
}
|
|
|
|
|
|
signed64
|
|
hw_event_queue_time (struct hw *me)
|
|
{
|
|
return sim_events_time (hw_system (me));
|
|
}
|
|
|
|
|