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/*
* Copyright (c) 2006-2012 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 "compile.h"
# include "config.h"
#ifdef CHECK_WITH_VALGRIND
# include "vvp_cleanup.h"
#endif
# include "sfunc.h"
# include <cstdlib>
# include <cstring>
# include <iostream>
# include <cassert>
sfunc_core::sfunc_core(vvp_net_t*net, vpiHandle sys,
unsigned argc, vpiHandle*argv)
: vvp_wide_fun_core(net, argc)
{
sys_ = sys;
argc_ = argc;
argv_ = argv;
}
sfunc_core::~sfunc_core()
{
delete sys_;
#ifdef CHECK_WITH_VALGRIND
for (unsigned i = 0; i < argc_; i += 1) {
constant_delete(argv_[i]);
}
#endif
delete [] argv_;
}
/*
* This method is only called when a trigger event occurs. Just arrange for
* the function to be called.
*/
void sfunc_core::recv_vec4(vvp_net_ptr_t, const vvp_vector4_t&/*bit*/,
vvp_context_t)
{
schedule_functor(this);
}
void sfunc_core::recv_vec4_from_inputs(unsigned port)
{
vpiHandle vpi = argv_[port];
struct __vpiBinaryConst*obj = dynamic_cast<__vpiBinaryConst*>(vpi);
assert(obj);
obj->bits = value(port);
/* Schedule the actual call after this finishes. */
schedule_functor(this);
}
void sfunc_core::recv_real_from_inputs(unsigned port)
{
vpiHandle vpi = argv_[port];
__vpiRealConst*obj = dynamic_cast<__vpiRealConst*>(vpi);
assert(obj);
obj->value = value_r(port);
/* Schedule the actual call after this finishes. */
schedule_functor(this);
}
void sfunc_core::run_run()
{
vpip_execute_vpi_call(0, sys_);
}
static int make_vpi_argv(unsigned argc, vpiHandle*vpi_argv,
const char*arg_string)
{
unsigned idx = 0;
const char*cp = arg_string;
int return_type = 0;
switch (*cp) {
case 'r': // real result
cp += 1;
return_type = -vpiRealVal;
break;
case 'v': // vector4_t
cp += 1;
return_type = strtoul(cp, 0, 10);
cp += strspn(cp, "0123456789");
break;
default:
fprintf(stderr, "Unsupported type %c(%d).\n", *cp, *cp);
assert(0);
break;
}
while (*cp) {
assert(idx < argc);
switch (*cp) {
case 'r': // real
cp += 1;
vpi_argv[idx] = vpip_make_real_const(0.0);
break;
case 'v': { // vector4_t (v<n>)
cp += 1;
unsigned wid = strtoul(cp, 0, 10);
cp += strspn(cp, "0123456789");
vpi_argv[idx] = vpip_make_binary_const(wid, "x");
break;
}
default:
fprintf(stderr, "Unsupported type %c(%d).\n", *cp, *cp);
assert(0);
}
idx += 1;
}
assert(idx == argc);
return return_type;
}
void compile_sfunc(char*label, char*name, char*format_string,
long file_idx, long lineno,
unsigned argc, struct symb_s*argv,
char*trigger_label)
{
unsigned vec4_stack = 0;
unsigned real_stack = 0;
unsigned string_stack = 0;
vpiHandle*vpi_argv = new vpiHandle[argc];
int val_code = make_vpi_argv(argc, vpi_argv, format_string);
unsigned val_width = 0;
delete[] format_string;
// The make_vpi_argv returns for the function return value a
// >0 value for the vector width if this is a vector. Convert
// it to the form that the vpip_build_vpi_call uses.
if (val_code > 0) {
val_width = val_code;
val_code = -vpiVectorVal;
}
vvp_net_t*ptr = new vvp_net_t;
vpiHandle sys = vpip_build_vpi_call(name, val_code, val_width, ptr,
true, false, argc, vpi_argv,
vec4_stack, real_stack, string_stack,
file_idx, lineno);
assert(sys);
/* Create and connect the functor to the label. */
sfunc_core*score = new sfunc_core(ptr, sys, argc, vpi_argv);
ptr->fun = score;
define_functor_symbol(label, ptr);
free(label);
/* Link the inputs to the functor. */
wide_inputs_connect(score, argc, argv);
free(argv);
/* If this function has a trigger event, connect the functor to
that event. */
if (trigger_label)
input_connect(ptr, 0, trigger_label);
delete[] name;
}
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