1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/* Copyright (c) 1995-2003 Pragmatic C Software Corp. */
/* simple hello world pli 2.0 task and real function */
#include <stdio.h>
#include <string.h>
#include "vpi_user.h"
#include "cv_vpi_user.h"
/* local prototypes */
static void print_systfs(void);
static int count_systf_args(vpiHandle);
static void vpiset_to_real(vpiHandle, double);
static void prtvpiemsg(struct t_vpi_error_info *);
/* global prototypes */
extern PLI_INT32 hello(void);
extern void register_my_systfs(void);
/*
* 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)
{
vpiHandle href, iref;
/* quick test of systf iterator */
print_systfs();
href = vpi_handle(vpiSysTfCall, NULL);
if (href == NULL)
{
vpi_printf("**ERR: $hello PLI 2.0 task registeration problem\n");
return(0);
}
if ((iref = vpi_iterate(vpiArgument, href)) != NULL)
{
vpi_printf(
"**ERR: $hello PLI 2.0 task called with %d arguments but none allowed\n",
count_systf_args(iref));
return(0);
}
vpi_printf("hello world\n");
return(0);
}
/*
* print a list of register systf routines
*/
static void print_systfs(void)
{
vpiHandle iter, tfref;
s_vpi_systf_data systf_inf;
p_vpi_systf_data tfinfp;
vpi_printf("--------------------------------------------------------------\n");
if ((iter = vpi_iterate(vpiUserSystf, NULL)) == NULL)
{
vpi_printf(" No registers vpi_ system tasks or functions.\n");
vpi_printf(
"--------------------------------------------------------------\n");
return;
}
/* user provides record that is filled but following current semantics */
/* values pointed to by contents are shared (i.e. must be left as is) */
tfinfp = &systf_inf;
for (;;)
{
if ((tfref = vpi_scan(iter)) == NULL) break;
vpi_get_systf_info(tfref, tfinfp);
if (tfinfp->type == vpiSysTask)
vpi_printf("vpi_ system task %s registered.\n", tfinfp->tfname);
else
{
vpi_printf("vpi_ system function %s (ret. type %d) registered.\n",
tfinfp->tfname, tfinfp->sysfunctype);
}
}
vpi_printf(
"--------------------------------------------------------------\n");
}
/*
* count arguments
*/
static int count_systf_args(vpiHandle iref)
{
int anum = 0;
while (vpi_scan(iref) != NULL) anum++;
return(anum);
}
/*
* real function that returns something and prints hello world
*
* should probably call vpi_chk_error - not just check for null handle
* returns 0 because vpi_user.h requires register funcs be int returning
*/
PLI_INT32 realfhello(void)
{
vpiHandle href, iref;
href = vpi_handle(vpiSysTfCall, NULL);
if (href == NULL)
{
vpi_printf("** ERR: $realfhello PLI 2.0 can not access sysf call handle\n");
return(0);
}
if ((iref = vpi_iterate(vpiArgument, href)) != NULL)
{
vpi_printf(
"**ERR: $realfhello PLI 2.0 task called with %d arguments but none allowed\n",
count_systf_args(iref));
return(0);
}
vpiset_to_real(href, 19.0);
vpi_printf("hello world\n");
return(0);
}
/*
* set a handle to a real value
*
* user must make sure href can have have a value put into it
* notice the key to vpi_ processing is to save and pass handles
*/
static void vpiset_to_real(vpiHandle href, double d1)
{
struct t_vpi_value valrec;
struct t_vpi_error_info einfotab;
valrec.format = vpiRealVal;
valrec.value.real = d1;
vpi_put_value(href, &valrec, NULL, vpiNoDelay);
if (vpi_chk_error(&einfotab))
{
vpi_printf("** ERR: vpi_put_value of real error:\n");
prtvpiemsg(&einfotab);
}
}
/*
* 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);
}
/* 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, NULL, NULL, NULL },
{ vpiSysFunc, vpiRealFunc, "$realfhello", realfhello, NULL, 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]();
}
}
|
