161 lines
4.3 KiB
C
161 lines
4.3 KiB
C
/* Generic simulator halt/resume.
|
|
Copyright (C) 1997, 1998, 2007, 2008 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 3 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef SIM_ENGINE_H
|
|
#define SIM_ENGINE_H
|
|
|
|
|
|
typedef struct _sim_engine sim_engine;
|
|
struct _sim_engine
|
|
{
|
|
void *jmpbuf;
|
|
sim_cpu *last_cpu;
|
|
sim_cpu *next_cpu;
|
|
int nr_cpus;
|
|
enum sim_stop reason;
|
|
sim_event *stepper;
|
|
int sigrc;
|
|
};
|
|
|
|
|
|
|
|
/* jmpval: 0 (initial use) start simulator
|
|
1 halt simulator
|
|
2 restart simulator
|
|
This is required by the ISO C standard (the only time 0 is returned
|
|
is at the initial call to setjmp). */
|
|
|
|
enum {
|
|
sim_engine_start_jmpval,
|
|
sim_engine_halt_jmpval,
|
|
sim_engine_restart_jmpval,
|
|
};
|
|
|
|
|
|
/* Get/set the run state of CPU to REASON/SIGRC.
|
|
REASON/SIGRC are the values returned by sim_stop_reason. */
|
|
void sim_engine_get_run_state (SIM_DESC sd, enum sim_stop *reason, int *sigrc);
|
|
void sim_engine_set_run_state (SIM_DESC sd, enum sim_stop reason, int sigrc);
|
|
|
|
|
|
/* Halt the simulator *now* */
|
|
|
|
extern void sim_engine_halt
|
|
(SIM_DESC sd,
|
|
sim_cpu *last_cpu, /* NULL -> in event-mgr */
|
|
sim_cpu *next_cpu, /* NULL -> succ (last_cpu) or event-mgr */
|
|
sim_cia cia,
|
|
enum sim_stop reason,
|
|
int sigrc) __attribute__ ((noreturn));
|
|
|
|
/* Halt hook - allow target specific operation when halting a
|
|
simulator */
|
|
|
|
#if !defined (SIM_ENGINE_HALT_HOOK)
|
|
#define SIM_ENGINE_HALT_HOOK(SD, LAST_CPU, CIA) \
|
|
if ((LAST_CPU) != NULL) CIA_SET (LAST_CPU, CIA)
|
|
#endif
|
|
|
|
/* NB: If a port uses the SIM_CPU_EXCEPTION_* hooks, the default
|
|
SIM_ENGINE_HALT_HOOK and SIM_ENGINE_RESUME_HOOK must not be used.
|
|
They conflict in that the PC set by the HALT_HOOK may overwrite the
|
|
proper one, as intended to be saved by the EXCEPTION_TRIGGER
|
|
hook. */
|
|
|
|
|
|
/* restart the simulator *now* */
|
|
|
|
extern void sim_engine_restart
|
|
(SIM_DESC sd,
|
|
sim_cpu *last_cpu, /* NULL -> in event-mgr */
|
|
sim_cpu *next_cpu, /* NULL -> succ (last_cpu) or event-mgr */
|
|
sim_cia cia);
|
|
|
|
/* Restart hook - allow target specific operation when restarting a
|
|
simulator */
|
|
|
|
#if !defined (SIM_ENGINE_RESTART_HOOK)
|
|
#define SIM_ENGINE_RESTART_HOOK(SD, LAST_CPU, CIA) SIM_ENGINE_HALT_HOOK(SD, LAST_CPU, CIA)
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* Abort the simulator *now*.
|
|
|
|
This function is NULL safe. It can be called when either of SD or
|
|
CIA are NULL.
|
|
|
|
This function is setjmp/longjmp safe. It can be called when of
|
|
the sim_engine setjmp/longjmp buffer has not been established.
|
|
|
|
Simulators that are using components such as sim-core but are not
|
|
yet using this sim-engine module should link in file sim-abort.o
|
|
which implements a non setjmp/longjmp version of
|
|
sim_engine_abort. */
|
|
|
|
extern void sim_engine_abort
|
|
(SIM_DESC sd,
|
|
sim_cpu *cpu,
|
|
sim_cia cia,
|
|
const char *fmt,
|
|
...) __attribute__ ((format (printf, 4, 5))) __attribute__ ((noreturn));
|
|
|
|
extern void sim_engine_vabort
|
|
(SIM_DESC sd,
|
|
sim_cpu *cpu,
|
|
sim_cia cia,
|
|
const char *fmt,
|
|
va_list ap) __attribute__ ((noreturn));
|
|
|
|
/* No abort hook - when possible this function exits using the
|
|
engine_halt function (and SIM_ENGINE_HALT_HOOK). */
|
|
|
|
|
|
|
|
|
|
/* Called by the generic sim_resume to run the simulation within the
|
|
above safty net.
|
|
|
|
An example implementation of sim_engine_run can be found in the
|
|
file sim-run.c */
|
|
|
|
extern void sim_engine_run
|
|
(SIM_DESC sd,
|
|
int next_cpu_nr,
|
|
int nr_cpus,
|
|
int siggnal); /* most simulators ignore siggnal */
|
|
|
|
|
|
|
|
/* Determine the state of next/last cpu when the simulator was last
|
|
halted - a value >= MAX_NR_PROCESSORS indicates that the
|
|
event-queue was next/last. */
|
|
|
|
extern int sim_engine_next_cpu_nr (SIM_DESC sd);
|
|
extern int sim_engine_last_cpu_nr (SIM_DESC sd);
|
|
extern int sim_engine_nr_cpus (SIM_DESC sd);
|
|
|
|
|
|
/* Establish the simulator engine */
|
|
MODULE_INSTALL_FN sim_engine_install;
|
|
|
|
|
|
#endif
|