//! @param trans The transaction payload
// ----------------------------------------------------------------------------
void
Or1ksimSyncSC::doTrans( tlm::tlm_generic_payload &trans )
{
// Synchronize with SystemC for the amount of time that the ISS has used
// since the last upcall.
wait( sc_core::sc_time( or1ksim_get_time_period(), sc_core::SC_SEC ));
// Call the transport. Since this is a synchronous model, the target should
// have synchronized, and no additional delay be added on return.
sc_core::sc_time delay = sc_core::SC_ZERO_TIME;
dataBus->b_transport( trans, delay );
or1ksim_set_time_point(); // Mark start of new time point in ISS
} // doTrans()
//! There are upcalls for read and write to peripherals (@see
//! ::staticReadUpcall(), ::staticWriteUpcall, ::readUpcall(),
//! ::writeUpcall()), which provide opportunities for the thread to yield, and
//! so not block the simulation.
// ----------------------------------------------------------------------------
void
Or1ksimDecoupSC::run()
{
while( true ) {
sc_core::sc_time timeLeft =
tgq->compute_local_quantum() - issQk.get_local_time();
// Mark the start of the ISS timing point, set a desired run duration and
// run for that duration (either of these may be changed by the read/write
// upcalls). On return advance the local time according to how much time
// has been used since the last ISS timing point, and if necessary
// synchronize.
or1ksim_set_time_point();
(void)or1ksim_run( timeLeft.to_seconds() );
issQk.inc( sc_core::sc_time( or1ksim_get_time_period(), sc_core::SC_SEC ));
// Sync if needed
if( issQk.need_sync() ) {
issQk.sync();
}
}
} // Or1ksimSC()
//! @param trans The transaction payload
// ----------------------------------------------------------------------------
void
Or1ksimDecoupSC::doTrans( tlm::tlm_generic_payload &trans )
{
issQk.inc( sc_core::sc_time( or1ksim_get_time_period(), sc_core::SC_SEC ));
or1ksim_set_time_point();
// Call the transport. Since this is a temporally decoupled model, the
// current local time is set in the delay.
sc_core::sc_time delay = issQk.get_local_time();
dataBus->b_transport( trans, delay );
issQk.set( delay ); // Updated
// This may have pushed us into needing to synchronize.
if( issQk.need_sync() ) {
issQk.sync();
}
// Reset the time the ISS is allowed to continue running
sc_core::sc_time timeLeft =
tgq->compute_local_quantum() - issQk.get_local_time();
or1ksim_reset_duration ( timeLeft.to_seconds() );
} // doTrans()
/* --------------------------------------------------------------------------*/
int
main (int argc,
char *argv[])
{
/* Parse args */
if (4 != argc)
{
fprintf (stderr,
"usage: lib-iftest <config-file> <image> <duration_ms>\n");
return 1;
}
int duration_ms = atoi (argv[3]);
double duration = (double) duration_ms / 1.0e3;
if (duration_ms <= 0)
{
fprintf (stderr, "ERROR. Duration must be positive number of ms\n");
return 1;
}
/* Dummy argv array to pass arguments to or1ksim_init. Varies depending on
whether an image file is specified. */
int dummy_argc;
char *dummy_argv[5];
dummy_argv[0] = "libsim";
dummy_argv[1] = "-q";
dummy_argv[2] = "-f";
dummy_argv[3] = argv[1];
dummy_argv[4] = argv[2];
dummy_argc = 5;
/* Put the initialization message afterwards, or it will get swamped by the
Or1ksim header. */
if (0 == or1ksim_init (dummy_argc, dummy_argv, NULL, NULL, NULL))
{
printf ("Initalization succeeded.\n");
}
else
{
printf ("Initalization failed.\n");
return 1;
}
/* Test of running */
printf ("Running code...");
switch (or1ksim_run (duration))
{
case OR1KSIM_RC_OK: printf ("done.\n"); break;
case OR1KSIM_RC_BRKPT: printf ("hit breakpoint.\n"); break;
default: printf ("failed.\n"); return 1;
}
/* Test of timing. Set a time point, run for the duration, then check the
timing matches. */
or1ksim_set_time_point ();
printf ("Set time point.\n");
printf ("Running code...");
switch (or1ksim_run (duration))
{
case OR1KSIM_RC_OK: printf ("done.\n"); break;
case OR1KSIM_RC_BRKPT: printf ("hit breakpoint.\n"); break;
default: printf ("failed.\n"); return 1;
}
/* All done OK (within 1ps) */
double measured_duration = or1ksim_get_time_period ();
if (fabs (duration - measured_duration) < 1e-12)
{
printf ("Measured time period correctly.\n");
}
else
{
printf ("Failed. Requested period %.12f, but measured %.12f\n", duration,
measured_duration);
return 1;
}
/* Test endianness */
if (or1ksim_is_le ())
{
printf ("Little endian architecture.\n");
}
else
{
printf ("Big endian architecture.\n");
}
/* Check for clock rate */
unsigned long int clock_rate = or1ksim_clock_rate ();
if (clock_rate > 0)
{
printf ("Clock rate %ld Hz.\n", clock_rate);
}
else
{
printf ("Invalid clock rate %ld Hz.\n", clock_rate);
return 1;
}
printf ("Test completed successfully.\n");
return 0;
} /* main () */