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/* Copyright (c) 1995-2003 Pragmatic C Software Corp. */
/* implement Verilog $fopen using PLI 2.0 vpi_ routines */
#include <stdio.h>
#include <string.h>
#include "vpi_user.h"
#include "cv_vpi_user.h"
/* local function prototypes */
/* global function prototypes */
extern int vpi_fopen_task(void);
extern int my_error_handler(struct t_cb_data *);
extern void register_cbs(void);
extern void register_my_systfs(void);
/*
* ignore the user data field
* this needs error messages
*/
int vpi_fopen_task(void)
{
int mcdhtyp;
unsigned int mcd;
vpiHandle href, iter, a1ref, a2ref;
struct t_vpi_value valrec;
struct t_vpi_time tmptim;
s_vpi_value tmpval;
href = vpi_handle(vpiSysTfCall, NULL);
if ((iter = vpi_iterate(vpiArgument, href)) == NULL) return(0);
if (vpi_get(vpiSize, iter) != 2) return(0);
if ((a1ref = vpi_scan(iter)) == NULL) return(0);
/* get the 2nd argument vpiReg handle */
if ((a2ref = vpi_scan(iter)) == NULL) return(0);
mcdhtyp = vpi_get(vpiType, a2ref);
if ((mcdhtyp != vpiReg && mcdhtyp != vpiIntegerVar)
|| vpi_get(vpiSize, a2ref) != 32) return(0);
valrec.format = vpiIntVal;
valrec.value.integer = (int) 0;
/* if error after here will return 0 */
vpi_put_value(a2ref, &valrec, NULL, vpiNoDelay);
tmpval.format = vpiStringVal;
/* evaluate expression */
vpi_get_value(a1ref, &tmpval);
mcd = vpi_mcd_open(tmpval.value.str);
if (mcd != 0) valrec.value.integer = (int) mcd;
/* Changed in 1.52 to allow NULL for ignored time field */
tmptim.type = vpiSuppressTime;
vpi_put_value(a2ref, &valrec, &tmptim, vpiNoDelay);
return(0);
}
/*
* routine to build an error indication string
*/
int my_error_handler(struct t_cb_data *cbp)
{
struct t_vpi_error_info einfotab;
struct t_vpi_error_info *einfop;
char s1[128];
einfop = &einfotab;
vpi_chk_error(einfop);
if (einfop->state == vpiCompile) strcpy(s1, "vpiCompile");
else if (einfop->state == vpiPLI) strcpy(s1, "vpiPLI");
else if (einfop->state == vpiRun) strcpy(s1, "vpiRun");
else strcpy(s1, "**unknown**");
vpi_printf("**ERR(%s) %s (level %d) at **%s(%d):\n %s\n",
einfop->code, s1, einfop->level, einfop->file, einfop->line,
einfop->message);
/* if serious error give up */
if (einfop->level == vpiSystem || einfop->level == vpiInternal)
{
vpi_printf("**FATAL: encountered error - giving up\n");
vpi_sim_control(vpiFinish, 0);
}
/* will just return and leave 0 in vpi_fopen return 2nd argument */
return(0);
}
/*
* register call backs
*/
void register_cbs(void)
{
vpiHandle href;
struct t_cb_data *ecbp;
struct t_cb_data cbrec;
/* notice cb records must be in global storage */
ecbp = &cbrec;
ecbp->reason = cbPLIError;
ecbp->cb_rtn = my_error_handler;
ecbp->obj = NULL;
ecbp->time = NULL;
ecbp->value = NULL;
ecbp->user_data = NULL;
/* probably should check for error here */
if ((href = vpi_register_cb(ecbp)) == NULL)
vpi_printf("**ERR: PLI 2.0 can not register error handler callback.\n");
}
/* Template functin table for added user systf tasks and functions.
See file vpi_user.h for structure definition
Note only vpi_register_systf and vpi_ or tf_ utility routines that
do not access the simulation data base may be called from these routines
*/
/* all routines are called to register system tasks */
/* called just after all PLI 1.0 tf_ veriusertfs table routines are set up */
/* before source is read */
void (*vlog_startup_routines[]) () =
{
register_my_systfs,
register_cbs,
0
};
/* routine to do the systf registering - probably should go in other file */
/* usually only vpi_ PLI 2.0 systf registering is done here */
/*
* register all vpi_ PLI 2.0 style user system tasks and functions
*/
void register_my_systfs(void)
{
p_vpi_systf_data systf_data_p;
/* use predefined table form - could fill systf_data_list dynamically */
static s_vpi_systf_data systf_data_list[] = {
{ vpiSysTask, 0, "$vpi_fopen_task", vpi_fopen_task, NULL, NULL },
{ 0, 0, NULL, NULL, NULL, NULL, NULL }
};
systf_data_p = &(systf_data_list[0]);
while (systf_data_p->type != 0) vpi_register_systf(systf_data_p++);
}
/* dummy +loadvpi= boostrap routine - mimics old style exec all routines */
/* in standard PLI vlog_startup_routines table */
void vpi_compat_bootstrap(void)
{
int i;
for (i = 0;; i++)
{
if (vlog_startup_routines[i] == NULL) break;
vlog_startup_routines[i]();
}
}
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