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Diffstat (limited to 'sim/common/sim-events.h')
| -rw-r--r-- | sim/common/sim-events.h | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/sim/common/sim-events.h b/sim/common/sim-events.h deleted file mode 100644 index 6dd1a2f..0000000 --- a/sim/common/sim-events.h +++ /dev/null @@ -1,243 +0,0 @@ -/* This file is part of the program psim. - - Copyright (C) 1994-1997, 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 _SIM_EVENTS_H_ -#define _SIM_EVENTS_H_ - - -/* Notes: - - When scheduling an event, the a delta of zero/one refers to the - timeline as follows: - - epoch 0|1 1|2 2|3 3| - **queue**|--insn--|*queue*|--insn--|*queue*|--insn--|*queue*| - | ^ ^ | ^ ^ - `- +0 ------------ +1 --.. `----- +0 ------------- +1 --.. - - When the queue is initialized, the time is set to zero with a - number of initialization events scheduled. Consequently, as also - illustrated above, the event queue should be processed before the - first instruction. That instruction being executed during tick 1. - - The simulator main loop may take a form similar to: - - if (halt-/restart-setjmp) - { - - .... // Determine who should go next - last-cpu-nr = get-last-cpu-nr (sd); - next-cpu-nr = get-next-cpu-nr (sd); - events-were-last? = (last-cpu-nr >= nr-cpus); - events-were-next? = (next-cpu-nr >= nr-cpus); - - .... // process any outstanding events - sim_events_preprocess (sd, events-were-last?, events-were-next?); - if (events-were-next) - next-cpu-nr = 0; - - .... // prime main loop - - while (1) - { - .... // model one insn of next-cpu-nr .. nr-cpus - if (sim_events_tick (sd)) - sim_events_process (sd); - next-cpu-nr = 0 - } - } - - NB. In the above pseudo code it is assumed that any cpu-nr >= - nr-cpus is a marker for the event queue. */ - - -typedef void sim_event_handler(SIM_DESC sd, void *data); - -typedef struct _sim_event sim_event; - -typedef struct _sim_events sim_events; -struct _sim_events { - int nr_ticks_to_process; - sim_event *queue; - sim_event *watchpoints; - sim_event *watchedpoints; - sim_event *free_list; - /* flag additional work needed */ - volatile int work_pending; - /* the asynchronous event queue */ -#ifndef MAX_NR_SIGNAL_SIM_EVENTS -#define MAX_NR_SIGNAL_SIM_EVENTS 2 -#endif - sim_event *held; - volatile int nr_held; - /* timekeeping */ - unsigned long elapsed_wallclock; - SIM_ELAPSED_TIME resume_wallclock; - signed64 time_of_event; - int time_from_event; - int trace; -}; - - - -/* Install the "events" module. */ - -EXTERN_SIM_EVENTS\ -(SIM_RC) sim_events_install (SIM_DESC sd); - - -/* Set Tracing Level */ - -EXTERN_SIM_EVENTS\ -(void) sim_events_set_trace -(SIM_DESC sd, - int level); - - -/* Schedule an event DELTA_TIME ticks into the future */ - -EXTERN_SIM_EVENTS\ -(sim_event *) sim_events_schedule -(SIM_DESC sd, - signed64 delta_time, - sim_event_handler *handler, - void *data); - -EXTERN_SIM_EVENTS\ -(void) sim_events_schedule_after_signal -(SIM_DESC sd, - signed64 delta_time, - sim_event_handler *handler, - void *data); - - -/* Schedule an event milli-seconds from NOW. The exact interpretation - of wallclock is host dependant. */ - -EXTERN_SIM_EVENTS\ -(sim_event *) sim_events_watch_clock -(SIM_DESC sd, - unsigned delta_ms_time, - sim_event_handler *handler, - void *data); - - -/* Schedule an event when the test (IS_WITHIN == (VAL >= LB && VAL <= - UB)) of the NR_BYTES value at HOST_ADDR with BYTE_ORDER endian is - true. - - HOST_ADDR: pointer into the host address space. - BYTE_ORDER: 0 - host endian; BIG_ENDIAN; LITTLE_ENDIAN */ - -EXTERN_SIM_EVENTS\ -(sim_event*) sim_events_watch_sim -(SIM_DESC sd, - void *host_addr, - int nr_bytes, - int byte_order, - int is_within, - unsigned64 lb, - unsigned64 ub, - sim_event_handler *handler, - void *data); - - -/* Schedule an event when the test (IS_WITHIN == (VAL >= LB && VAL <= - UB)) of the NR_BYTES value at CORE_ADDR in BYTE_ORDER endian is - true. - - CORE_ADDR/MAP: pointer into the target address space. - BYTE_ORDER: 0 - current target endian; BIG_ENDIAN; LITTLE_ENDIAN */ - -EXTERN_SIM_EVENTS\ -(sim_event*) sim_events_watch_core -(SIM_DESC sd, - address_word core_addr, - sim_core_maps core_map, - int nr_bytes, - int byte_order, - int is_within, - unsigned64 lb, - unsigned64 ub, - sim_event_handler *handler, - void *data); - -/* Deschedule the specified event */ - -EXTERN_SIM_EVENTS\ -(void) sim_events_deschedule -(SIM_DESC sd, - sim_event *event_to_remove); - - -/* Prepare for main simulator loop. Ensure that the next thing to do - is not event processing. - - If the simulator halted part way through event processing then both - EVENTS_WERE_LAST and EVENTS_WERE_FIRST shall be true. - - If the simulator halted after processing the last cpu, then only - EVENTS_WERE_NEXT shall be true. */ - -INLINE_SIM_EVENTS\ -(void) sim_events_preprocess -(SIM_DESC sd, - int events_were_last, - int events_were_next); - - -/* Progress time - separated into two parts so that the main loop can - save its context before the event queue is processed. - - sim_events_tickn advances the clock by N cycles (1..MAXINT) */ - -INLINE_SIM_EVENTS\ -(int) sim_events_tick -(SIM_DESC sd); - -INLINE_SIM_EVENTS\ -(int) sim_events_tickn -(SIM_DESC sd, - int n); - -INLINE_SIM_EVENTS\ -(void) sim_events_process -(SIM_DESC sd); - - -/* Progress time such that an event shall occure upon the next call to - sim_events tick */ - -#if 0 -INLINE_SIM_EVENTS\ -(void) sim_events_timewarp -(SIM_DESC sd); -#endif - - -/* local concept of time */ - -INLINE_SIM_EVENTS\ -(signed64) sim_events_time -(SIM_DESC sd); - - -#endif |