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/* Copyright (c) 1995-2003 Pragmatic C Software Corp. */
/* version of hello that does not work */
/* shows problem with tf_ style checking in vpi_ */
#include <stdio.h>
#include <string.h>
#include "vpi_user.h"
#include "cv_vpi_user.h"
/* local prototypes */
static void prtvpiemsg(struct t_vpi_error_info *);
static int count_systf_args(vpiHandle);
/* global prototypes */
extern PLI_INT32 hello_setup(char *);
extern PLI_INT32 hello_chk(struct t_cb_data *);
extern void register_my_systfs(void);
/*
* possible pattern for register vpi_ system tasks and functions
*/
/*
* this is routine to implement registered systf call back
*
* notice vpi_user.h requires function return int so using dummy 0
*/
PLI_INT32 hello(void)
{
vpi_printf("hello world\n");
return(0);
}
/*
* check each hello call, in struct as short but passed as int
*
* dynamic nature of PLI 2.0 requires checking just before simulation
* because need to wait until simulation data structure is built
*/
PLI_INT32 hello_setup(char *data)
{
vpiHandle href;
struct t_cb_data *cbp;
struct t_cb_data cbrec;
vpi_printf("... executing vpi_ systf compiletf routine.\n");
cbp = &cbrec;
cbp->reason = cbEndOfCompile;
cbp->cb_rtn = hello_chk;
cbp->obj = NULL;
cbp->time = NULL;
cbp->value = NULL;
cbp->user_data = NULL;
/* probably should check for error here */
if ((href = vpi_register_cb(cbp)) == NULL)
vpi_printf(
"**ERR: $hello PLI 2.0 task cannot register end of compile check routine");
/* if not registered will be no call backs */
return(0);
}
/*
* check - must be at end of compile after sim data structure set up
*/
PLI_INT32 hello_chk(struct t_cb_data *cbp)
{
vpiHandle href, iref;
struct t_vpi_error_info einfotab;
vpi_printf("... executing EndOfCompile callback for checking.\n");
href = vpi_handle(vpiSysTfCall, NULL);
if (vpi_chk_error(&einfotab))
{
if (href != NULL) vpi_printf("... why is handle not nil\n");
vpi_printf("** ERR: $hello PLI 2.0 can not access systf call handle\n");
prtvpiemsg(&einfotab);
/* vpi_sim_control(vpiFinish, 0); */
}
iref = vpi_iterate(vpiArgument, href);
if (vpi_chk_error(&einfotab))
{
vpi_printf("** ERR: vpi_iterate error:\n");
prtvpiemsg(&einfotab);
vpi_sim_control(vpiFinish, 0);
}
if (iref != NULL)
{
vpi_printf(
"** ERR: $hello PLI 2.0 task called with %d arguments but none allowed",
count_systf_args(iref));
vpi_free_object(iref);
vpi_sim_control(vpiFinish, 0);
}
return(0);
}
/*
* routine to build an error indication string
*/
static void prtvpiemsg(struct t_vpi_error_info *einfop)
{
char s1[128];
if (einfop->state == vpiCompile) strcpy(s1, "vpiCompile");
else if (einfop->state == vpiPLI) strcpy(s1, "vpiPLI");
else if (einfop->state == vpiRun) strcpy(s1, "vpiRun");
else strcpy(s1, "**unknown**");
vpi_printf("%s: %s error (level %d) at **%s(%d):\n %s\n",
einfop->code, s1, einfop->level, einfop->file, einfop->line,
einfop->message);
}
/*
* count arguments
*/
static int count_systf_args(vpiHandle iref)
{
int anum = 0;
while (vpi_scan(iref) != NULL) anum++;
return(anum);
}
/* Template functin table for added user systf tasks and functions.
See file vpi_user.h for structure definition
Note only vpi_register_systf and vpi_ or tf_ utility routines that
do not access the simulation data base may be called from these routines
*/
/* all routines are called to register system tasks */
/* called just after all PLI 1.0 tf_ veriusertfs table routines are set up */
/* before source is read */
void (*vlog_startup_routines[]) () =
{
register_my_systfs,
0
};
/* routine to do the systf registering - probably should go in other file */
/* usually only vpi_ PLI 2.0 systf registering is done here */
/*
* register all vpi_ PLI 2.0 style user system tasks and functions
*/
void register_my_systfs(void)
{
p_vpi_systf_data systf_data_p;
/* use predefined table form - could fill systf_data_list dynamically */
static s_vpi_systf_data systf_data_list[] = {
{ vpiSysTask, 0, "$hello", hello, hello_setup, 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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