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o Implement generic halt/restart/abort module.

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Use in tic80 and d30v simulators.
o	Add signal hook to sim-core module
This commit is contained in:
Andrew Cagney 1997-05-19 03:42:33 +00:00
parent 11ab132f16
commit f03b093cd3
18 changed files with 1415 additions and 377 deletions
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134
sim/common/sim-engine.c Normal file
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@ -0,0 +1,134 @@
/* Generic simulator halt/restart.
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 <stdio.h>
#include <signal.h>
/* Generic halt */
void
sim_engine_halt (SIM_DESC sd,
sim_cpu *last_cpu,
sim_cpu *next_cpu, /* NULL - use default */
sim_cia cia,
enum sim_stop reason,
int sigrc)
{
sim_engine *engine = STATE_ENGINE (sd);
if (engine->jmpbuf != NULL)
{
jmp_buf *halt_buf = engine->jmpbuf;
engine->last_cpu = last_cpu;
engine->next_cpu = next_cpu;
engine->reason = reason;
engine->sigrc = sigrc;
SIM_ENGINE_HALT_HOOK (sd, last_cpu, cia);
longjmp(*halt_buf, 1);
}
else
sim_io_error (sd, "sim_halt - bad long jump");
}
/* Generic restart */
void
sim_engine_restart (SIM_DESC sd,
sim_cpu *last_cpu,
sim_cpu *next_cpu,
sim_cia cia)
{
sim_engine *engine = STATE_ENGINE (sd);
if (engine->jmpbuf != NULL)
{
jmp_buf *halt_buf = engine->jmpbuf;
engine->last_cpu = last_cpu;
engine->next_cpu = next_cpu;
SIM_ENGINE_RESTART_HOOK (sd, last_cpu, cia);
longjmp(*halt_buf, 0);
}
else
sim_io_error (sd, "sim_restart - bad long jump");
}
/* Generic error code */
void
sim_engine_abort (SIM_DESC sd,
sim_cpu *cpu,
sim_cia cia,
const char *fmt,
...)
{
if (sd == NULL)
{
va_list ap;
va_start(ap, fmt);
vfprintf (stderr, fmt, ap);
va_end(ap);
fprintf (stderr, "\nQuit\n");
abort ();
}
else if (STATE_ENGINE (sd)->jmpbuf == NULL)
{
va_list ap;
va_start(ap, fmt);
sim_io_evprintf (sd, fmt, ap);
va_end(ap);
sim_io_eprintf (sd, "\n");
sim_io_error (sd, "Quit Simulator");
}
else
{
va_list ap;
va_start(ap, fmt);
sim_io_evprintf (sd, fmt, ap);
va_end(ap);
sim_io_eprintf (sd, "\n");
sim_engine_halt (sd, cpu, NULL, cia, sim_stopped, SIGABRT);
}
}
/* Generic next/last cpu */
int
sim_engine_last_cpu_nr (SIM_DESC sd)
{
sim_engine *engine = STATE_ENGINE (sd);
if (engine->last_cpu != NULL)
return engine->last_cpu - STATE_CPU (sd, 0);
else
return MAX_NR_PROCESSORS;
}
int
sim_engine_next_cpu_nr (SIM_DESC sd)
{
sim_engine *engine = STATE_ENGINE (sd);
if (engine->next_cpu != NULL)
return engine->next_cpu - STATE_CPU (sd, 0);
else
return sim_engine_last_cpu_nr (sd) + 1;
}