mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-26 19:44:11 +08:00
96 lines
2.7 KiB
C
96 lines
2.7 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 "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, SIM_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);
|
|
|
|
sim_module_resume (sd);
|
|
|
|
/* run/resume the simulator */
|
|
engine->jmpbuf = &buf;
|
|
jmpval = setjmp (buf);
|
|
if (jmpval == sim_engine_start_jmpval
|
|
|| jmpval == sim_engine_restart_jmpval)
|
|
{
|
|
int last_cpu_nr = sim_engine_last_cpu_nr (sd);
|
|
int next_cpu_nr = sim_engine_next_cpu_nr (sd);
|
|
int nr_cpus = sim_engine_nr_cpus (sd);
|
|
int sig_to_deliver;
|
|
|
|
sim_events_preprocess (sd, last_cpu_nr >= nr_cpus, next_cpu_nr >= nr_cpus);
|
|
if (next_cpu_nr >= nr_cpus)
|
|
next_cpu_nr = 0;
|
|
|
|
/* Only deliver the SIGGNAL [sic] the first time through - don't
|
|
re-deliver any SIGGNAL during a restart. NOTE: A new local
|
|
variable is used to avoid problems with the automatic
|
|
variable ``siggnal'' being trashed by a long jump. */
|
|
if (jmpval == sim_engine_start_jmpval)
|
|
sig_to_deliver = siggnal;
|
|
else
|
|
sig_to_deliver = 0;
|
|
|
|
#ifdef SIM_CPU_EXCEPTION_RESUME
|
|
{
|
|
sim_cpu* cpu = STATE_CPU (sd, next_cpu_nr);
|
|
SIM_CPU_EXCEPTION_RESUME(sd, cpu, sig_to_deliver);
|
|
}
|
|
#endif
|
|
|
|
sim_engine_run (sd, next_cpu_nr, nr_cpus, sig_to_deliver);
|
|
}
|
|
engine->jmpbuf = NULL;
|
|
|
|
sim_module_suspend (sd);
|
|
}
|