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68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/* Generic simulator resume.
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Copyright (C) 1997 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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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 <signal.h>
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/* Halt the simulator after just one instruction */
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static void
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has_stepped (SIM_DESC sd,
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void *data)
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{
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sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_stopped, SIGTRAP);
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}
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/* Generic resume - assumes the existance of sim_engine_run */
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void
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sim_resume (SIM_DESC sd,
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int step,
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int siggnal)
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{
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sim_engine *engine = STATE_ENGINE (sd);
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jmp_buf buf;
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/* we only want to be single stepping the simulator once */
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if (engine->stepper != NULL)
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{
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sim_events_deschedule (sd, engine->stepper);
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engine->stepper = NULL;
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}
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if (step)
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engine->stepper = sim_events_schedule (sd, 1, has_stepped, sd);
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/* run/resume the simulator */
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engine->jmpbuf = &buf;
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if (! setjmp (buf))
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{
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int last_cpu_nr = sim_engine_last_cpu_nr (sd);
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int next_cpu_nr = sim_engine_next_cpu_nr (sd);
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int nr_cpus = MAX_NR_PROCESSORS; /* FIXME */
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sim_events_preprocess (sd, last_cpu_nr >= nr_cpus, next_cpu_nr >= nr_cpus);
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if (next_cpu_nr >= nr_cpus)
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next_cpu_nr = 0;
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sim_engine_run (sd, next_cpu_nr, siggnal);
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}
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engine->jmpbuf = NULL;
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}
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