C++ STATE_MAGIC函数代码示例

void
sim_engine_vabort (SIM_DESC sd,
		   sim_cpu *cpu,
		   sim_cia cia,
		   const char *fmt,
		   va_list ap)
{
  ASSERT (sd == NULL || STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  if (sd == NULL)
    {
      vfprintf (stderr, fmt, ap);
      fprintf (stderr, "\nQuit\n");
      abort ();
    }
  else if (STATE_ENGINE (sd)->jmpbuf == NULL)
    {
      sim_io_evprintf (sd, fmt, ap);
      sim_io_eprintf (sd, "\n");
      sim_io_error (sd, "Quit Simulator");
      abort ();
    }
  else
    {
      sim_io_evprintf (sd, fmt, ap);
      sim_io_eprintf (sd, "\n");
      sim_engine_halt (sd, cpu, NULL, cia, sim_stopped, SIM_SIGABRT);
    }
}

SIM_RC
sim_engine_install (SIM_DESC sd)
{
  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  sim_module_add_init_fn (sd, sim_engine_init);
  return SIM_RC_OK;
}

static void
control_c_simulation (SIM_DESC sd,
		      void *data)
{
  ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_stopped, SIM_SIGINT);
}

SIM_RC
sim_pre_argv_init (SIM_DESC sd, const char *myname)
{
  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  SIM_ASSERT (STATE_MODULES (sd) == NULL);

  STATE_MY_NAME (sd) = lbasename (myname);

  /* Set the cpu names to default values.  */
  {
    int i;
    for (i = 0; i < MAX_NR_PROCESSORS; ++i)
      {
	char *name;
	if (asprintf (&name, "cpu%d", i) < 0)
	  return SIM_RC_FAIL;
	CPU_NAME (STATE_CPU (sd, i)) = name;
      }
  }

  sim_config_default (sd);

  /* Install all configured in modules.  */
  if (sim_module_install (sd) != SIM_RC_OK)
    return SIM_RC_FAIL;

  return SIM_RC_OK;
}

int
sim_read (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
{
  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  return sim_core_read_buffer (sd, NULL, read_map,
			       buf, mem, length);
}

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);
  ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  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);

#ifdef SIM_CPU_EXCEPTION_SUSPEND
      if (last_cpu != NULL && reason != sim_exited)
	SIM_CPU_EXCEPTION_SUSPEND (sd, last_cpu, sim_signal_to_host (sd, sigrc));
#endif

      longjmp (*halt_buf, sim_engine_halt_jmpval);
    }
  else
    {
      sim_io_error (sd, "sim_halt - bad long jump");
      abort ();
    }
}

int
sim_write (SIM_DESC sd, SIM_ADDR mem, const unsigned char *buf, int length)
{
  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  return sim_core_write_buffer (sd, NULL, write_map,
				buf, mem, length);
}

void
sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc)
{
  sim_engine *engine = NULL;
  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  engine = STATE_ENGINE (sd);
  *reason = engine->reason;
  switch (*reason)
    {
    case sim_exited :
      *sigrc = engine->sigrc;
      break;
    case sim_signalled :
      /* ??? See the comment below case `sim_signalled' in
	 gdb/remote-sim.c:gdbsim_wait.
	 ??? Consider the case of the target requesting that it
	 kill(2) itself with SIGNAL.  That SIGNAL, being target
	 specific, will not correspond to either of the SIM_SIGNAL
	 enum nor the HOST_SIGNAL.  A mapping from TARGET_SIGNAL to
	 HOST_SIGNAL is needed.  */
      *sigrc = sim_signal_to_host (sd, engine->sigrc);
      break;
    case sim_stopped :
      /* The gdb/simulator interface calls for us to return the host
	 version of the signal which gdb then converts into the
	 target's version.  This is obviously a bit clumsy.  */
      *sigrc = sim_signal_to_host (sd, engine->sigrc);
      break;
    default :
      abort ();
    }
}

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);
}

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);
}

int
sim_store_register (SIM_DESC sd, int rn, unsigned char *buf, int length)
{
  SIM_CPU *cpu = STATE_CPU (sd, 0);

  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  return (* CPU_REG_STORE (cpu)) (cpu, rn, buf, length);
}

SIM_RC
cris_option_install (SIM_DESC sd)
{
  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  if (sim_add_option_table (sd, NULL, cris_options) != SIM_RC_OK)
    return SIM_RC_FAIL;
  return SIM_RC_OK;
}

void
sim_engine_set_run_state (SIM_DESC sd, enum sim_stop reason, int sigrc)
{
  sim_engine *engine = STATE_ENGINE (sd);
  ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  engine->reason = reason;
  engine->sigrc = sigrc;
}

SIM_RC
sim_memopt_install (SIM_DESC sd)
{
  SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  sim_add_option_table (sd, NULL, memory_options);
  sim_module_add_uninstall_fn (sd, sim_memory_uninstall);
  sim_module_add_init_fn (sd, sim_memory_init);
  return SIM_RC_OK;
}

int
sim_stop (SIM_DESC sd)
{
  ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
  sim_events_schedule_after_signal (sd,
				    0 /*NOW*/,
				    control_c_simulation,
				    sd /*data*/);
  return 1;
}