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/*
* Copyright (C) 2008-2021 Cary R. (cygcary@yahoo.com)
*
* This program is free software; you can redistribute it and/or modify
* it 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 "sys_priv.h"
#include <assert.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "version_base.h"
/* Once we have real string objects replace this with a dynamic string. */
#define MAX_STRING_RESULT 1024
/*
* Check that the routines are called with the correct arguments.
*/
static PLI_INT32 simparam_compiletf(ICARUS_VPI_CONST PLI_BYTE8 *name_ext)
{
vpiHandle callh, argv, arg;
callh = vpi_handle(vpiSysTfCall, 0);
assert(callh != 0);
argv = vpi_iterate(vpiArgument, callh);
/* We must have at least one argument. */
if (argv == 0) {
vpi_printf("ERROR: %s:%d: ", vpi_get_str(vpiFile, callh),
(int)vpi_get(vpiLineNo, callh));
vpi_printf("$simparam%s requires a string argument.\n", name_ext);
vpip_set_return_value(1);
vpi_control(vpiFinish, 1);
return 0;
}
/* The first argument must be a string. */
arg = vpi_scan(argv);
if (! is_string_obj(arg)) {
vpi_printf("ERROR: %s:%d: ", vpi_get_str(vpiFile, callh),
(int)vpi_get(vpiLineNo, callh));
vpi_printf("The first argument to $simparam%s must be a string.\n",
name_ext);
vpip_set_return_value(1);
vpi_control(vpiFinish, 1);
}
/* The second argument (default value) is optional. */
arg = vpi_scan(argv);
if (arg == 0) return 0;
/* For the string version the default must also be a string. */
if (strcmp(name_ext, "$str") == 0) {
if (! is_string_obj(arg)) {
vpi_printf("ERROR: %s:%d: ", vpi_get_str(vpiFile, callh),
(int)vpi_get(vpiLineNo, callh));
vpi_printf("When provided, the second argument to $simparam%s"
"must be a string.\n", name_ext);
vpip_set_return_value(1);
vpi_control(vpiFinish, 1);
}
/* For the rest the default must be numeric. */
} else {
if (! is_numeric_obj(arg)) {
vpi_printf("ERROR: %s:%d: ", vpi_get_str(vpiFile, callh),
(int)vpi_get(vpiLineNo, callh));
vpi_printf("When provided, the second argument to $simparam%s"
"must be numeric.\n", name_ext);
vpip_set_return_value(1);
vpi_control(vpiFinish, 1);
}
}
/* We can have a maximum of two arguments. */
if (vpi_scan(argv) != 0) {
char msg[64];
unsigned argc;
snprintf(msg, sizeof(msg), "ERROR: %s:%d:",
vpi_get_str(vpiFile, callh),
(int)vpi_get(vpiLineNo, callh));
msg[sizeof(msg)-1] = 0;
argc = 1;
while (vpi_scan(argv)) argc += 1;
vpi_printf("%s $simparam%s takes at most two arguments.\n",
msg, name_ext);
vpi_printf("%*s Found %u extra argument%s.\n",
(int) strlen(msg), " ", argc, argc == 1 ? "" : "s");
vpip_set_return_value(1);
vpi_control(vpiFinish, 1);
}
return 0;
}
static PLI_INT32 simparam_calltf(ICARUS_VPI_CONST PLI_BYTE8 *name_ext)
{
vpiHandle callh = vpi_handle(vpiSysTfCall, 0);
vpiHandle argv = vpi_iterate(vpiArgument, callh);
vpiHandle arg;
s_vpi_value val;
char *param;
unsigned have_def_val = 0;
double retval, defval = 0.0;
/* Get the parameter we are looking for. */
arg = vpi_scan(argv);
val.format = vpiStringVal;
vpi_get_value(arg, &val);
param = strdup(val.value.str);
/* See if there is a default value. */
arg = vpi_scan(argv);
if (arg != 0) {
vpi_free_object(argv);
have_def_val = 1;
val.format = vpiRealVal;
vpi_get_value(arg, &val);
defval = val.value.real;
}
/* Now check the various things we can return. */
if (strcmp(param, "gdev") == 0) {
retval = 0.0; /* Nothing for now. */
} else if (strcmp(param, "gmin") == 0) {
retval = 0.0; /* Nothing for now. */
} else if (strcmp(param, "imax") == 0) {
retval = 0.0; /* Nothing for now. */
} else if (strcmp(param, "imelt") == 0) {
retval = 0.0; /* Nothing for now. */
} else if (strcmp(param, "iteration") == 0) {
retval = 0.0; /* Nothing for now. */
} else if (strcmp(param, "scale") == 0) {
retval = 0.0; /* Nothing for now. */
} else if (strcmp(param, "shrink") == 0) {
retval = 0.0; /* Nothing for now. */
} else if (strcmp(param, "simulatorSubversion") == 0) {
retval = VERSION_MINOR;
} else if (strcmp(param, "simulatorVersion") == 0) {
retval = VERSION_MAJOR;
} else if (strcmp(param, "sourceScaleFactor") == 0) {
retval = 0.0; /* Nothing for now. */
} else if (strcmp(param, "tnom") == 0) {
retval = 0.0; /* Nothing for now. */
} else if (strcmp(param, "timeUnit") == 0) {
retval = pow(10, vpi_get(vpiTimeUnit, sys_func_module(callh)));
} else if (strcmp(param, "timePrecision") == 0) {
retval = pow(10, vpi_get(vpiTimePrecision, sys_func_module(callh)));
} else if (strcmp(param, "CPUWordSize") == 0) {
retval = 8.0*sizeof(long);
} else {
if (! have_def_val) {
vpi_printf("ERROR: %s:%d: ", vpi_get_str(vpiFile, callh),
(int)vpi_get(vpiLineNo, callh));
vpi_printf("$simparam%s unknown parameter name \"%s\".\n",
name_ext, param);
}
retval = defval;
}
free(param);
/* Return the value to the system. */
val.format = vpiRealVal;
val.value.real = retval;
vpi_put_value(callh, &val, 0, vpiNoDelay);
return 0;
}
static PLI_INT32 simparam_str_calltf(ICARUS_VPI_CONST PLI_BYTE8 *name_ext)
{
vpiHandle callh = vpi_handle(vpiSysTfCall, 0);
vpiHandle argv = vpi_iterate(vpiArgument, callh);
vpiHandle arg;
s_vpi_value val;
char *param;
char *retval, *defval = NULL;
/* Get the parameter we are looking for. */
arg = vpi_scan(argv);
val.format = vpiStringVal;
vpi_get_value(arg, &val);
param = strdup(val.value.str);
/* See if there is a default value. */
arg = vpi_scan(argv);
if (arg != 0) {
vpi_free_object(argv);
val.format = vpiStringVal;
vpi_get_value(arg, &val);
defval = strdup(val.value.str);
}
/* Now check the various things we can return. */
/* For now we limit the result to 1024 characters. */
if (strcmp(param, "analysis_name") == 0) {
retval = strdup("N/A"); /* Nothing for now. */
} else if (strcmp(param, "analysis_type") == 0) {
retval = strdup("N/A"); /* Nothing for now. */
} else if (strcmp(param, "cwd") == 0) {
char path [MAX_STRING_RESULT];
char *ptr = getcwd(path, MAX_STRING_RESULT);
if (ptr == NULL) {
strcpy(path, "<error getting the cwd, is it too long?>");
}
retval = strdup(path);
} else if (strcmp(param, "module") == 0) {
retval = strdup(vpi_get_str(vpiDefName, sys_func_module(callh)));
} else if (strcmp(param, "instance") == 0) {
retval = strdup(vpi_get_str(vpiFullName, sys_func_module(callh)));
} else if (strcmp(param, "path") == 0) {
retval = strdup(vpi_get_str(vpiFullName,
vpi_handle(vpiScope,callh)));
} else {
if (defval == NULL) {
vpi_printf("ERROR: %s:%d: ", vpi_get_str(vpiFile, callh),
(int)vpi_get(vpiLineNo, callh));
vpi_printf("$simparam%s unknown parameter name \"%s\".\n",
name_ext, param);
defval = strdup("<error>");
}
retval = defval;
}
free(param);
/* Return the value to the system. */
val.format = vpiStringVal;
val.value.str = retval;
vpi_put_value(callh, &val, 0, vpiNoDelay);
if (defval != retval) free(defval);
free(retval);
return 0;
}
static PLI_INT32 simparam_str_sizetf(ICARUS_VPI_CONST PLI_BYTE8 *name_ext)
{
(void) name_ext; /* Parameter is not used. */
return MAX_STRING_RESULT; /* 128 characters max! */
}
/*
* Register the function with Verilog.
*/
void vams_simparam_register(void)
{
s_vpi_systf_data tf_data;
vpiHandle res;
tf_data.type = vpiSysFunc;
tf_data.sysfunctype = vpiRealFunc;
tf_data.calltf = simparam_calltf;
tf_data.compiletf = simparam_compiletf;
tf_data.sizetf = 0;
tf_data.tfname = "$simparam";
tf_data.user_data = "";
res = vpi_register_systf(&tf_data);
vpip_make_systf_system_defined(res);
tf_data.type = vpiSysFunc;
tf_data.sysfunctype = vpiSizedFunc; /* What should this be? */
tf_data.calltf = simparam_str_calltf;
tf_data.compiletf = simparam_compiletf;
tf_data.sizetf = simparam_str_sizetf; /* Only 128 characters! */
tf_data.tfname = "$simparam$str";
tf_data.user_data = "$str";
res = vpi_register_systf(&tf_data);
vpip_make_systf_system_defined(res);
}
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