79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/* Generic simulator resume.
|
|
Copyright (C) 1997 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 <signal.h>
|
|
|
|
#include "sim-main.h"
|
|
#include "sim-assert.h"
|
|
|
|
/* Halt the simulator after just one instruction */
|
|
|
|
static void
|
|
has_stepped (SIM_DESC sd,
|
|
void *data)
|
|
{
|
|
ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
|
|
sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_stopped, SIGTRAP);
|
|
}
|
|
|
|
|
|
/* Generic resume - assumes the existance of sim_engine_run */
|
|
|
|
void
|
|
sim_resume (SIM_DESC sd,
|
|
int step,
|
|
int siggnal)
|
|
{
|
|
sim_engine *engine = STATE_ENGINE (sd);
|
|
jmp_buf buf;
|
|
int jmpval;
|
|
|
|
ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
|
|
|
|
/* we only want to be single stepping the simulator once */
|
|
if (engine->stepper != NULL)
|
|
{
|
|
sim_events_deschedule (sd, engine->stepper);
|
|
engine->stepper = NULL;
|
|
}
|
|
if (step)
|
|
engine->stepper = sim_events_schedule (sd, 1, has_stepped, sd);
|
|
|
|
/* run/resume the simulator */
|
|
/* jmpval: 0 (initial use) start simulator
|
|
1 halt simulator
|
|
2 restart simulator
|
|
*/
|
|
|
|
engine->jmpbuf = &buf;
|
|
jmpval = setjmp (buf);
|
|
if (jmpval == 0 || jmpval == 2)
|
|
{
|
|
int last_cpu_nr = sim_engine_last_cpu_nr (sd);
|
|
int next_cpu_nr = sim_engine_next_cpu_nr (sd);
|
|
int nr_cpus = MAX_NR_PROCESSORS; /* FIXME */
|
|
sim_events_preprocess (sd, last_cpu_nr >= nr_cpus, next_cpu_nr >= nr_cpus);
|
|
if (next_cpu_nr >= nr_cpus)
|
|
next_cpu_nr = 0;
|
|
sim_engine_run (sd, next_cpu_nr, siggnal);
|
|
}
|
|
engine->jmpbuf = NULL;
|
|
}
|