Andrew Cagney
29 years ago
14 changed files with 276 additions and 108 deletions
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/* Hardware event manager.
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Copyright (C) 1998 Free Software Foundation, Inc. |
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Contributed by Cygnus Support. |
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This file is part of GDB, the GNU debugger. |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2, or (at your option) |
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any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License along |
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with this program; if not, write to the Free Software Foundation, Inc., |
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
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#include "sim-main.h" |
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#include "hw-base.h" |
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#include "sim-events.h" |
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/* The hw-events object is implemented using sim-events */ |
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struct hw_event { |
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void *data; |
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struct hw *me; |
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hw_event_callback *callback; |
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sim_event *real; |
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struct hw_event_data *entry; |
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}; |
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struct hw_event_data { |
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struct hw_event event; |
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struct hw_event_data *next; |
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struct hw_event_data **prev; |
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}; |
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void |
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create_hw_event_data (struct hw *me) |
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{ |
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/* NOP */ |
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} |
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void |
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delete_hw_event_data (struct hw *me) |
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{ |
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if (me->events_of_hw != NULL) |
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hw_abort (me, "stray events"); |
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} |
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static void |
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delete_hw_event (struct hw *me, |
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struct hw_event **event) |
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{ |
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struct hw_event_data *entry = (*event)->entry; |
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*(entry->prev) = entry->next; |
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entry->next->prev = entry->prev; |
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(*event) = NULL; |
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} |
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static void |
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create_hw_event (struct hw *me, |
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struct hw_event **event) |
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{ |
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struct hw_event_data *entry = HW_ZALLOC (me, struct hw_event_data); |
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entry->next = me->events_of_hw; |
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entry->prev = &me->events_of_hw; |
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me->events_of_hw->prev = &entry->next; |
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me->events_of_hw = entry; |
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(*event) = &entry->event; |
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} |
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/* Pass the H/W event onto the real callback */ |
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static void |
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bounce_hw_event (SIM_DESC sd, |
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void *data) |
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{ |
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/* save the data */ |
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struct hw_event *event = (struct hw_event*)data; |
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struct hw *me = event->me; |
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void *event_data = event->data; |
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hw_event_callback *callback = event->callback; |
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hw_free (me, data); |
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event = NULL; |
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callback (me, event_data); |
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} |
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/* Map onto the event functions */ |
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struct hw_event * |
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hw_event_queue_schedule (struct hw *me, |
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signed64 delta_time, |
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hw_event_callback *callback, |
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void *data) |
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{ |
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struct hw_event *event; |
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create_hw_event (me, &event); |
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/* fill it in */ |
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event->data = data; |
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event->callback = callback; |
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event->me = me; |
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event->real = sim_events_schedule (hw_system (me), |
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delta_time, |
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bounce_hw_event, |
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event); |
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return event; |
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} |
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void |
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hw_event_queue_deschedule (struct hw *me, |
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struct hw_event *event_to_remove) |
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{ |
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/* remove it from the event queue */ |
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sim_events_deschedule (hw_system (me), |
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event_to_remove->real); |
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delete_hw_event (me, &event_to_remove); |
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} |
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signed64 |
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hw_event_queue_time (struct hw *me) |
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{ |
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return sim_events_time (hw_system (me)); |
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} |
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@ -0,0 +1,44 @@ |
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/* Hardware event manager.
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Copyright (C) 1998 Free Software Foundation, Inc. |
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Contributed by Cygnus Support. |
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|
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This file is part of GDB, the GNU debugger. |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2, or (at your option) |
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any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License along |
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with this program; if not, write to the Free Software Foundation, Inc., |
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
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#ifndef HW_EVENTS_H |
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#define HW_EVENTS_H |
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/* Event manager customized for hardware models.
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This interface is discussed further in sim-events.h. */ |
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struct hw_event; |
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typedef void (hw_event_callback) (struct hw *me, void *data); |
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struct hw_event *hw_event_queue_schedule |
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(struct hw *me, |
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signed64 delta_time, |
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hw_event_callback *handler, |
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void *data); |
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void hw_event_queue_deschedule |
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(struct hw *me, |
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struct hw_event *event_to_remove); |
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signed64 hw_event_queue_time |
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(struct hw *me); |
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#endif |
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