Initial creation of sourceware repository

1 files changed, 0 insertions, 238 deletions

diff --git a/sim/ppc/events.c b/sim/ppc/events.c
deleted file mode 100644
index 4b26a6a..0000000
--- a/sim/ppc/events.c
+++ /dev/null
@@ -1,238 +0,0 @@
-/*  This file is part of the program psim.
-
-    Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
-
-    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 of the License, 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.
- 
-    */
-
-
-#ifndef _EVENTS_C_
-#define _EVENTS_C_
-
-#ifndef STATIC_INLINE_EVENTS
-#define STATIC_INLINE_EVENTS STATIC_INLINE
-#endif
-
-
-#include "basics.h"
-#include "events.h"
-
-
-/* The event queue maintains a single absolute time using two
-   variables.
-   
-   TIME_OF_EVENT: this holds the time at which the next event is ment
-   to occure.  If no next event it will hold the time of the last
-   event.  The first event occures at time 0 - system start.
-
-   TIME_FROM_EVENT: The current distance from TIME_OF_EVENT.  If an
-   event is pending, this will be positive.  If no future event is
-   pending this will be negative.  This variable is decremented once
-   for each iteration of a clock cycle.
-
-   Clearly there is a bug in that this code assumes that the absolute
-   time counter will never become greater than 2^62. */
-
-typedef struct _event_entry event_entry;
-struct _event_entry {
-  void *data;
-  event_handler *handler;
-  signed64 time_of_event;  
-  event_entry *next;
-};
-
-struct _event_queue {
-  event_entry *queue;
-  event_entry *volatile held;
-  event_entry *volatile *volatile held_end;
-  signed64 time_of_event;
-  signed64 time_from_event;
-};
-
-
-INLINE_EVENTS event_queue *
-event_queue_create(void)
-{
-  event_queue *new_event_queue = ZALLOC(event_queue);
-
-  new_event_queue->queue = NULL;
-  new_event_queue->held = NULL;
-  new_event_queue->held_end = &new_event_queue->held;
-  /* both times are already zero */
-  return new_event_queue;
-}
-
-
-
-STATIC_INLINE_EVENTS void
-insert_event_entry(event_queue *events,
-		   event_entry *new_event,
-		   signed64 delta)
-{
-  event_entry *curr;
-  event_entry **last;
-  signed64 time_of_event;
-
-  if (delta <= 0)
-    error("can not schedule event for current time\n");
-
-  /* compute when the event should occure */
-  time_of_event = (events->time_of_event
-		   - events->time_from_event
-		   + delta);
-
-  /* find the queue insertion point - things are time ordered */
-  last = &events->queue;
-  curr = events->queue;
-  while (curr != NULL && time_of_event >= curr->time_of_event) {
-    last = &curr->next;
-    curr = curr->next;
-  }
-
-  /* insert it */
-  new_event->next = curr;
-  *last = new_event;
-  new_event->time_of_event = time_of_event;
-
-  /* adjust the time until the first event */
-  events->time_from_event = (events->queue->time_of_event
-			     - (events->time_of_event
-				- events->time_from_event));
-  events->time_of_event = events->queue->time_of_event;
-}
-
-INLINE_EVENTS event_entry_tag
-event_queue_schedule(event_queue *events,
-		     signed64 delta_time,
-		     event_handler *handler,
-		     void *data)
-{
-  event_entry *new_event = ZALLOC(event_entry);
-  new_event->data = data;
-  new_event->handler = handler;
-  insert_event_entry(events, new_event, delta_time);
-  return new_event;
-}
-
-
-INLINE_EVENTS event_entry_tag
-event_queue_schedule_after_signal(event_queue *events,
-				  signed64 delta_time,
-				  event_handler *handler,
-				  void *data)
-{
-  event_entry *new_event = ZALLOC(event_entry);
-
-  new_event->data = data;
-  new_event->handler = handler;
-  new_event->time_of_event = delta_time; /* work it out later */
-  new_event->next = NULL;
-
-  /*-LOCK-*/
-  if (events->held == NULL) {
-    events->held = new_event;
-  }
-  else {
-    *events->held_end = new_event;
-  }
-  events->held_end = &new_event->next;
-  /*-UNLOCK-*/
-
-  return new_event;
-}
-
-
-INLINE_EVENTS void
-event_queue_deschedule(event_queue *events,
-		       event_entry_tag event_to_remove)
-{
-  if (event_to_remove != NULL) {
-    event_entry *current;
-    event_entry **ptr_to_current;
-    for (ptr_to_current = &events->queue, current = *ptr_to_current;
-	 current != NULL && current != event_to_remove;
-	 ptr_to_current = &current->next, current = *ptr_to_current);
-    if (current == event_to_remove) {
-      *ptr_to_current = current->next;
-      zfree(current);
-      /* Just forget to recompute the delay to the next event */
-    }
-  }
-}
-
-
-
-
-INLINE_EVENTS int
-event_queue_tick(event_queue *events)
-{
-  /* remove things from the asynchronous event queue onto the real one */
-  if (events->held != NULL) {
-    event_entry *held_events;
-    event_entry *curr_event;
-
-    /*-LOCK-*/
-    held_events = events->held;
-    events->held = NULL;
-    events->held_end = &events->held;
-    /*-UNLOCK-*/
-
-    do {
-      curr_event = held_events;
-      held_events = curr_event->next;
-      insert_event_entry(events, curr_event, curr_event->time_of_event);
-    } while (held_events != NULL);
-  }
-
-  /* advance time, checking to see if we've reached time zero which
-     would indicate the time for the next event has arrived */
-  events->time_from_event -= 1;
-  return events->time_from_event == 0;
-}
-
-INLINE_EVENTS void
-event_queue_process(event_queue *events)
-{
-  if (events->time_from_event == 0) {
-    /* consume all events for this or earlier times */
-    do {
-      event_entry *to_do = events->queue;
-      events->queue = to_do->next;
-      to_do->handler(events,
-		     to_do->data);
-      zfree(to_do);
-    } while (events->queue != NULL
-	     && events->queue->time_of_event <= events->time_of_event);
-    /* re-caculate time for new events */
-    if (events->queue != NULL) {
-      events->time_from_event = (events->queue->time_of_event
-				 - events->time_of_event);
-      events->time_of_event = events->queue->time_of_event;
-    }
-    else {
-      /* nothing to do, time_from_event will go negative */
-    }
-  }
-}
-
-INLINE_EVENTS signed64
-event_queue_time(event_queue *queue)
-{
-  return queue->time_of_event - queue->time_from_event;
-}
-
-
-#endif /* _EVENTS_C_ */