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/*
* Copyright (c) 2003-2014 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU
* General Public License as published by the Free Software
* Foundation; either version 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <veriuser.h>
#include <vpi_user.h>
#include "priv.h"
#include <assert.h>
static PLI_INT32 delay_callback(struct t_cb_data*cb)
{
(void)cb; /* Parameter is not used. */
vpi_printf("XXXX delay_callback called.\n");
return 0;
}
int tf_isetdelay(PLI_INT32 delay, void*ss)
{
vpiHandle sys = (vpiHandle)ss;
int unit = vpi_get(vpiTimeUnit, sys);
int prec = vpi_get(vpiTimePrecision, 0);
struct t_cb_data cb;
struct t_vpi_time ct;
if (pli_trace) {
fprintf(pli_trace, "%s: tf_isetdelay(%d, ...)"
" <unit=%d, prec=%d>;\n",
vpi_get_str(vpiName, sys), (int)delay, unit, prec);
}
/* Convert the delay from the UNITS of the specified
task/function to the precision of the simulation. */
assert(unit >= prec);
while (unit > prec) {
PLI_INT32 tmp = delay * 10;
assert(tmp > delay);
delay = tmp;
unit -= 1;
}
/* Create a VPI callback to schedule the delay. */
ct.type = vpiSimTime;
ct.high = 0;
ct.low = delay;
cb.reason = cbAfterDelay;
cb.cb_rtn = delay_callback;
cb.obj = 0;
cb.time = &ct;
cb.value = 0;
cb.user_data = 0;
vpi_register_cb(&cb);
return 0;
}
int tf_setdelay(PLI_INT32 delay)
{
return tf_isetdelay(delay, tf_getinstance());
}
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