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t-dll.cc
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t-dll.cc
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/*
* Copyright (c) 2000-2005 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: t-dll.cc,v 1.171 2007/06/02 03:42:13 steve Exp $"
#endif
# include "config.h"
# include <iostream>
# include <stdio.h> // sprintf()
# include "compiler.h"
# include "t-dll.h"
# include "netmisc.h"
#ifdef HAVE_MALLOC_H
# include <malloc.h>
#endif
# include <stdlib.h>
#if defined(__WIN32__)
inline ivl_dll_t ivl_dlopen(const char *name)
{
ivl_dll_t res = (ivl_dll_t) LoadLibrary(name);
return res;
}
inline void * ivl_dlsym(ivl_dll_t dll, const char *nm)
{
FARPROC sym;
return (void*)GetProcAddress((HMODULE)dll, nm);
}
inline void ivl_dlclose(ivl_dll_t dll)
{
FreeLibrary((HMODULE)dll);
}
const char *dlerror(void)
{
static char msg[256];
unsigned long err = GetLastError();
FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
err,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &msg,
sizeof(msg) - 1,
NULL
);
return msg;
}
#elif defined(HAVE_DLFCN_H)
inline ivl_dll_t ivl_dlopen(const char*name)
{ return dlopen(name,RTLD_LAZY); }
inline void* ivl_dlsym(ivl_dll_t dll, const char*nm)
{
void*sym = dlsym(dll, nm);
/* Not found? try without the leading _ */
if (sym == 0 && nm[0] == '_')
sym = dlsym(dll, nm+1);
return sym;
}
inline void ivl_dlclose(ivl_dll_t dll)
{ dlclose(dll); }
#elif defined(HAVE_DL_H)
inline ivl_dll_t ivl_dlopen(const char*name)
{ return shl_load(name, BIND_IMMEDIATE, 0); }
inline void* ivl_dlsym(ivl_dll_t dll, const char*nm)
{
void*sym;
int rc = shl_findsym(&dll, nm, TYPE_PROCEDURE, &sym);
return (rc == 0) ? sym : 0;
}
inline void ivl_dlclose(ivl_dll_t dll)
{ shl_unload(dll); }
inline const char*dlerror(void)
{ return strerror( errno ); }
#endif
/*
* The custom new operator for the ivl_nexus_s type allows us to
* allocate nexus objects in blocks. There are generally lots of them
* permanently allocated, and allocating them in blocks reduces the
* allocation overhead.
*/
static struct ivl_nexus_s * nexus_pool_ptr = 0;
static int nexus_pool_remaining = 0;
static const size_t NEXUS_POOL_SIZE = 4096;
void* ivl_nexus_s::operator new(size_t s)
{
assert(s == sizeof(struct ivl_nexus_s));
if (nexus_pool_remaining <= 0) {
nexus_pool_ptr = new struct ivl_nexus_s[NEXUS_POOL_SIZE];
nexus_pool_remaining = NEXUS_POOL_SIZE;
}
struct ivl_nexus_s*tmp = nexus_pool_ptr;
nexus_pool_ptr += 1;
nexus_pool_remaining -= 1;
return tmp;
}
inline static const char *basename(ivl_scope_t scope, const char *inst)
{
inst += strlen(ivl_scope_name(scope));
assert(*inst == '.');
return inst+1;
}
static perm_string make_scope_name(const hname_t&name)
{
if (! name.has_number())
return name.peek_name();
char buf[1024];
snprintf(buf, sizeof buf, "%s[%d]",
name.peek_name().str(), name.peek_number());
return lex_strings.make(buf);
}
static struct dll_target dll_target_obj;
static void drive_from_link(const Link&lnk, ivl_drive_t&drv0, ivl_drive_t&drv1)
{
switch (lnk.drive0()) {
case Link::HIGHZ:
drv0 = IVL_DR_HiZ;
break;
case Link::WEAK:
drv0 = IVL_DR_WEAK;
break;
case Link::PULL:
drv0 = IVL_DR_PULL;
break;
case Link::STRONG:
drv0 = IVL_DR_STRONG;
break;
case Link::SUPPLY:
drv0 = IVL_DR_SUPPLY;
break;
}
switch (lnk.drive1()) {
case Link::HIGHZ:
drv1 = IVL_DR_HiZ;
break;
case Link::WEAK:
drv1 = IVL_DR_WEAK;
break;
case Link::PULL:
drv1 = IVL_DR_PULL;
break;
case Link::STRONG:
drv1 = IVL_DR_STRONG;
break;
case Link::SUPPLY:
drv1 = IVL_DR_SUPPLY;
break;
}
}
ivl_attribute_s* dll_target::fill_in_attributes(const Attrib*net)
{
ivl_attribute_s*attr;
unsigned nattr = net->attr_cnt();
if (nattr == 0)
return 0;
attr = new struct ivl_attribute_s[nattr];
for (unsigned idx = 0 ; idx < nattr ; idx += 1) {
verinum tmp = net->attr_value(idx);
attr[idx].key = net->attr_key(idx);
if (tmp.is_string()) {
attr[idx].type = IVL_ATT_STR;
attr[idx].val.str = strings_.add(tmp.as_string().c_str());
} else if (tmp == verinum()) {
attr[idx].type = IVL_ATT_VOID;
} else {
attr[idx].type = IVL_ATT_NUM;
attr[idx].val.num = tmp.as_long();
}
}
return attr;
}
/*
* This function locates an ivl_scope_t object that matches the
* NetScope object. The search works by looking for the parent scope,
* then scanning the parent scope for the NetScope object.
*/
static ivl_scope_t find_scope_from_root(ivl_scope_t root, const NetScope*cur)
{
ivl_scope_t parent, tmp;
perm_string cur_name = make_scope_name(cur->fullname());
if (const NetScope*par = cur->parent()) {
parent = find_scope_from_root(root, par);
if (parent == 0)
return 0;
for (tmp = parent->child_ ; tmp ; tmp = tmp->sibling_)
if (strcmp(tmp->name_, cur_name) == 0)
return tmp;
} else {
if (strcmp(root->name_, cur_name) == 0)
return root;
}
return 0;
}
ivl_scope_t dll_target::find_scope(ivl_design_s &des, const NetScope*cur)
{
assert(cur);
ivl_scope_t scope = 0;
for (unsigned i = 0; i < des.nroots_ && scope == 0; i += 1) {
assert(des.roots_[i]);
scope = find_scope_from_root(des.roots_[i], cur);
}
return scope;
}
ivl_scope_t dll_target::lookup_scope_(const NetScope*cur)
{
return find_scope(des_, cur);
}
/*
* This is a convenience function to locate an ivl_signal_t object
* given the NetESignal that has the signal name.
*/
ivl_signal_t dll_target::find_signal(ivl_design_s &des, const NetNet*net)
{
ivl_scope_t scope = find_scope(des, net->scope());
assert(scope);
perm_string nname = net->name();
for (unsigned idx = 0 ; idx < scope->nsigs_ ; idx += 1) {
if (strcmp(scope->sigs_[idx]->name_, nname) == 0)
return scope->sigs_[idx];
}
assert(0);
return 0;
}
static ivl_nexus_t nexus_sig_make(ivl_signal_t net, unsigned pin)
{
ivl_nexus_t tmp = new struct ivl_nexus_s;
tmp->private_data = 0;
tmp->nptr_ = 1;
tmp->ptrs_ = (struct ivl_nexus_ptr_s*)
malloc(sizeof(struct ivl_nexus_ptr_s));
tmp->ptrs_[0].pin_ = pin;
tmp->ptrs_[0].type_ = __NEXUS_PTR_SIG;
tmp->ptrs_[0].l.sig = net;
ivl_drive_t drive = IVL_DR_HiZ;
switch (ivl_signal_type(net)) {
case IVL_SIT_REG:
drive = IVL_DR_STRONG;
break;
default:
break;
}
tmp->ptrs_[0].drive0 = drive;
tmp->ptrs_[0].drive1 = drive;
return tmp;
}
static void nexus_sig_add(ivl_nexus_t nex, ivl_signal_t net, unsigned pin)
{
unsigned top = nex->nptr_ + 1;
nex->ptrs_ = (struct ivl_nexus_ptr_s*)
realloc(nex->ptrs_, top * sizeof(struct ivl_nexus_ptr_s));
nex->nptr_ = top;
ivl_drive_t drive = IVL_DR_HiZ;
switch (ivl_signal_type(net)) {
case IVL_SIT_REG:
drive = IVL_DR_STRONG;
break;
default:
break;
}
nex->ptrs_[top-1].type_= __NEXUS_PTR_SIG;
nex->ptrs_[top-1].drive0 = drive;
nex->ptrs_[top-1].drive1 = drive;
nex->ptrs_[top-1].pin_ = pin;
nex->ptrs_[top-1].l.sig= net;
}
/*
* Add the pin of the logic object to the nexus, and return the nexus
* pointer used for the pin.
*
* NOTE: This pointer is only valid until another pin is added to the
* nexus.
*/
static ivl_nexus_ptr_t nexus_log_add(ivl_nexus_t nex,
ivl_net_logic_t net,
unsigned pin)
{
unsigned top = nex->nptr_ + 1;
nex->ptrs_ = (struct ivl_nexus_ptr_s*)
realloc(nex->ptrs_, top * sizeof(struct ivl_nexus_ptr_s));
nex->nptr_ = top;
nex->ptrs_[top-1].type_= __NEXUS_PTR_LOG;
nex->ptrs_[top-1].drive0 = (pin == 0)? IVL_DR_STRONG : IVL_DR_HiZ;
nex->ptrs_[top-1].drive1 = (pin == 0)? IVL_DR_STRONG : IVL_DR_HiZ;
nex->ptrs_[top-1].pin_ = pin;
nex->ptrs_[top-1].l.log= net;
return nex->ptrs_ + top - 1;
}
static void nexus_con_add(ivl_nexus_t nex, ivl_net_const_t net, unsigned pin,
ivl_drive_t drive0, ivl_drive_t drive1)
{
unsigned top = nex->nptr_ + 1;
nex->ptrs_ = (struct ivl_nexus_ptr_s*)
realloc(nex->ptrs_, top * sizeof(struct ivl_nexus_ptr_s));
nex->nptr_ = top;
nex->ptrs_[top-1].type_= __NEXUS_PTR_CON;
nex->ptrs_[top-1].drive0 = drive0;
nex->ptrs_[top-1].drive1 = drive1;
nex->ptrs_[top-1].pin_ = pin;
nex->ptrs_[top-1].l.con= net;
}
static void nexus_lpm_add(ivl_nexus_t nex, ivl_lpm_t net, unsigned pin,
ivl_drive_t drive0, ivl_drive_t drive1)
{
unsigned top = nex->nptr_ + 1;
nex->ptrs_ = (struct ivl_nexus_ptr_s*)
realloc(nex->ptrs_, top * sizeof(struct ivl_nexus_ptr_s));
nex->nptr_ = top;
nex->ptrs_[top-1].type_= __NEXUS_PTR_LPM;
nex->ptrs_[top-1].drive0 = drive0;
nex->ptrs_[top-1].drive1 = drive0;
nex->ptrs_[top-1].pin_ = pin;
nex->ptrs_[top-1].l.lpm= net;
}
void scope_add_logic(ivl_scope_t scope, ivl_net_logic_t net)
{
if (scope->nlog_ == 0) {
scope->nlog_ = 1;
scope->log_ = (ivl_net_logic_t*)malloc(sizeof(ivl_net_logic_t));
scope->log_[0] = net;
} else {
scope->nlog_ += 1;
scope->log_ = (ivl_net_logic_t*)
realloc(scope->log_, scope->nlog_*sizeof(ivl_net_logic_t));
scope->log_[scope->nlog_-1] = net;
}
}
void scope_add_event(ivl_scope_t scope, ivl_event_t net)
{
if (scope->nevent_ == 0) {
scope->nevent_ = 1;
scope->event_ = (ivl_event_t*)malloc(sizeof(ivl_event_t));
scope->event_[0] = net;
} else {
scope->nevent_ += 1;
scope->event_ = (ivl_event_t*)
realloc(scope->event_, scope->nevent_*sizeof(ivl_event_t));
scope->event_[scope->nevent_-1] = net;
}
}
static void scope_add_lpm(ivl_scope_t scope, ivl_lpm_t net)
{
if (scope->nlpm_ == 0) {
assert(scope->lpm_ == 0);
scope->nlpm_ = 1;
scope->lpm_ = (ivl_lpm_t*)malloc(sizeof(ivl_lpm_t));
scope->lpm_[0] = net;
} else {
assert(scope->lpm_);
scope->nlpm_ += 1;
scope->lpm_ = (ivl_lpm_t*)
realloc(scope->lpm_,
scope->nlpm_*sizeof(ivl_lpm_t));
scope->lpm_[scope->nlpm_-1] = net;
}
}
ivl_parameter_t dll_target::scope_find_param(ivl_scope_t scope,
const char*name)
{
unsigned idx = 0;
while (idx < scope->nparam_) {
if (strcmp(name, scope->param_[idx].basename) == 0)
return scope->param_ + idx;
idx += 1;
}
return 0;
}
/*
* This method scans the parameters of the scope, and makes
* ivl_parameter_t objects. This involves saving the name and scanning
* the expression value.
*/
void dll_target::make_scope_parameters(ivl_scope_t scope, const NetScope*net)
{
scope->nparam_ = net->parameters.size() + net->localparams.size();
if (scope->nparam_ == 0) {
scope->param_ = 0;
return;
}
scope->param_ = new struct ivl_parameter_s [scope->nparam_];
unsigned idx = 0;
typedef map<perm_string,NetScope::param_expr_t>::const_iterator pit_t;
for (pit_t cur_pit = net->parameters.begin()
; cur_pit != net->parameters.end() ; cur_pit ++) {
assert(idx < scope->nparam_);
ivl_parameter_t cur_par = scope->param_ + idx;
cur_par->basename = (*cur_pit).first;
cur_par->scope = scope;
NetExpr*etmp = (*cur_pit).second.expr;
make_scope_param_expr(cur_par, etmp);
idx += 1;
}
for (pit_t cur_pit = net->localparams.begin()
; cur_pit != net->localparams.end() ; cur_pit ++) {
assert(idx < scope->nparam_);
ivl_parameter_t cur_par = scope->param_ + idx;
cur_par->basename = (*cur_pit).first;
cur_par->scope = scope;
NetExpr*etmp = (*cur_pit).second.expr;
make_scope_param_expr(cur_par, etmp);
idx += 1;
}
}
void dll_target::make_scope_param_expr(ivl_parameter_t cur_par, NetExpr*etmp)
{
if (const NetEConst*e = dynamic_cast<const NetEConst*>(etmp)) {
expr_const(e);
assert(expr_);
switch (expr_->type_) {
case IVL_EX_STRING:
expr_->u_.string_.parameter = cur_par;
break;
case IVL_EX_NUMBER:
expr_->u_.number_.parameter = cur_par;
break;
default:
assert(0);
}
} else if (const NetECReal*e = dynamic_cast<const NetECReal*>(etmp)) {
expr_creal(e);
assert(expr_);
assert(expr_->type_ == IVL_EX_REALNUM);
expr_->u_.real_.parameter = cur_par;
}
cur_par->value = expr_;
expr_ = 0;
}
void dll_target::add_root(ivl_design_s &des_, const NetScope *s)
{
ivl_scope_t root_ = new struct ivl_scope_s;
perm_string name = s->basename();
root_->name_ = name;
root_->child_ = 0;
root_->sibling_ = 0;
root_->parent = 0;
root_->nsigs_ = 0;
root_->sigs_ = 0;
root_->nlog_ = 0;
root_->log_ = 0;
root_->nevent_ = 0;
root_->event_ = 0;
root_->nlpm_ = 0;
root_->lpm_ = 0;
root_->def = 0;
make_scope_parameters(root_, s);
root_->type_ = IVL_SCT_MODULE;
root_->tname_ = root_->name_;
root_->time_units = s->time_unit();
root_->nattr = s->attr_cnt();
root_->attr = fill_in_attributes(s);
des_.nroots_++;
if (des_.roots_)
des_.roots_ = (ivl_scope_t *)realloc(des_.roots_, des_.nroots_ * sizeof(ivl_scope_t));
else
des_.roots_ = (ivl_scope_t *)malloc(des_.nroots_ * sizeof(ivl_scope_t));
des_.roots_[des_.nroots_ - 1] = root_;
}
bool dll_target::start_design(const Design*des)
{
list<NetScope *> root_scopes;
const char*dll_path_ = des->get_flag("DLL");
dll_ = ivl_dlopen(dll_path_);
if ((dll_ == 0) && (dll_path_[0] != '/')) {
size_t len = strlen(basedir) + 1 + strlen(dll_path_) + 1;
char*tmp = new char[len];
sprintf(tmp, "%s/%s", basedir, dll_path_);
dll_ = ivl_dlopen(tmp);
delete[]tmp;
}
if (dll_ == 0) {
cerr << "error: " << dll_path_ << " failed to load." << endl;
cerr << dll_path_ << ": " << dlerror() << endl;
return false;
}
stmt_cur_ = 0;
// Initialize the design object.
des_.self = des;
des_.time_precision = des->get_precision();
des_.nroots_ = 0;
des_.roots_ = NULL;
root_scopes = des->find_root_scopes();
for (list<NetScope*>::const_iterator scope = root_scopes.begin();
scope != root_scopes.end(); scope++)
add_root(des_, *scope);
des_.consts = (ivl_net_const_t*)
malloc(sizeof(ivl_net_const_t));
des_.nconsts = 0;
target_ = (target_design_f)ivl_dlsym(dll_, LU "target_design" TU);
if (target_ == 0) {
cerr << dll_path_ << ": error: target_design entry "
"point is missing." << endl;
return false;
}
return true;
}
/*
* Here ivl is telling us that the design is scanned completely, and
* here is where we call the API to process the constructed design.
*/
int dll_target::end_design(const Design*)
{
if (verbose_flag) {
cout << " ... invoking target_design" << endl;
}
int rc = (target_)(&des_);
ivl_dlclose(dll_);
return rc;
}
void dll_target::logic_attributes(struct ivl_net_logic_s *obj,
const NetNode*net)
{
obj->nattr = net->attr_cnt();
obj->attr = fill_in_attributes(net);
}
void dll_target::make_logic_delays_(struct ivl_net_logic_s*obj,
const NetObj*net)
{
obj->delay[0] = 0;
obj->delay[1] = 0;
obj->delay[2] = 0;
/* Translate delay expressions to ivl_target form. Try to
preserve pointer equality, not as a rule but to save on
expression trees. */
if (net->rise_time()) {
expr_ = 0;
net->rise_time()->expr_scan(this);
obj->delay[0] = expr_;
expr_ = 0;
}
if (net->fall_time()) {
if (net->fall_time() == net->rise_time()) {
obj->delay[1] = obj->delay[0];
} else {
expr_ = 0;
net->fall_time()->expr_scan(this);
obj->delay[1] = expr_;
expr_ = 0;
}
}
if (net->decay_time()) {
if (net->decay_time() == net->rise_time()) {
obj->delay[2] = obj->delay[0];
} else {
expr_ = 0;
net->decay_time()->expr_scan(this);
obj->delay[2] = expr_;
expr_ = 0;
}
}
}
/*
* Add a bufz object to the scope that contains it.
*
* Note that in the ivl_target API a BUFZ device is a special kind of
* ivl_net_logic_t device, so create an ivl_net_logic_t cookie to
* handle it.
*/
bool dll_target::bufz(const NetBUFZ*net)
{
struct ivl_net_logic_s *obj = new struct ivl_net_logic_s;
assert(net->pin_count() == 2);
obj->type_ = IVL_LO_BUFZ;
obj->width_= net->width();
obj->npins_= 2;
obj->pins_ = new ivl_nexus_t[2];
/* Get the ivl_nexus_t objects connected to the two pins.
(We know a priori that the ivl_nexus_t objects have been
allocated, because the signals have been scanned before
me. This saves me the trouble of allocating them.) */
assert(net->pin(0).nexus()->t_cookie());
obj->pins_[0] = net->pin(0).nexus()->t_cookie();
ivl_nexus_ptr_t out_ptr = nexus_log_add(obj->pins_[0], obj, 0);
switch (net->pin(0).drive0()) {
case Link::HIGHZ:
out_ptr->drive0 = IVL_DR_HiZ;
break;
case Link::WEAK:
out_ptr->drive0 = IVL_DR_WEAK;
break;
case Link::PULL:
out_ptr->drive0 = IVL_DR_PULL;
break;
case Link::STRONG:
out_ptr->drive0 = IVL_DR_STRONG;
break;
case Link::SUPPLY:
out_ptr->drive0 = IVL_DR_SUPPLY;
break;
}
switch (net->pin(0).drive1()) {
case Link::HIGHZ:
out_ptr->drive1 = IVL_DR_HiZ;
break;
case Link::WEAK:
out_ptr->drive1 = IVL_DR_WEAK;
break;
case Link::PULL:
out_ptr->drive1 = IVL_DR_PULL;
break;
case Link::STRONG:
out_ptr->drive1 = IVL_DR_STRONG;
break;
case Link::SUPPLY:
out_ptr->drive1 = IVL_DR_SUPPLY;
break;
}
assert(net->pin(1).nexus()->t_cookie());
obj->pins_[1] = net->pin(1).nexus()->t_cookie();
nexus_log_add(obj->pins_[1], obj, 1);
/* Attach the logic device to the scope that contains it. */
assert(net->scope());
ivl_scope_t scope = find_scope(des_, net->scope());
assert(scope);
obj->scope_ = scope;
obj->name_ = net->name();
logic_attributes(obj, net);
make_logic_delays_(obj, net);
scope_add_logic(scope, obj);
return true;
}
void dll_target::event(const NetEvent*net)
{
struct ivl_event_s *obj = new struct ivl_event_s;
ivl_scope_t scope = find_scope(des_, net->scope());
obj->name = net->name();
obj->scope = scope;
scope_add_event(scope, obj);
obj->nany = 0;
obj->nneg = 0;
obj->npos = 0;
if (net->nprobe() >= 1) {
for (unsigned idx = 0 ; idx < net->nprobe() ; idx += 1) {
const NetEvProbe*pr = net->probe(idx);
switch (pr->edge()) {
case NetEvProbe::ANYEDGE:
obj->nany += pr->pin_count();
break;
case NetEvProbe::NEGEDGE:
obj->nneg += pr->pin_count();
break;
case NetEvProbe::POSEDGE:
obj->npos += pr->pin_count();
break;
}
}
unsigned npins = obj->nany + obj->nneg + obj->npos;
obj->pins = (ivl_nexus_t*)calloc(npins, sizeof(ivl_nexus_t));
} else {
obj->pins = 0;
}
}
void dll_target::logic(const NetLogic*net)
{
struct ivl_net_logic_s *obj = new struct ivl_net_logic_s;
obj->width_ = net->width();
switch (net->type()) {
case NetLogic::AND:
obj->type_ = IVL_LO_AND;
break;
case NetLogic::BUF:
obj->type_ = IVL_LO_BUF;
break;
case NetLogic::BUFIF0:
obj->type_ = IVL_LO_BUFIF0;
break;
case NetLogic::BUFIF1:
obj->type_ = IVL_LO_BUFIF1;
break;
case NetLogic::NAND:
obj->type_ = IVL_LO_NAND;
break;
case NetLogic::NMOS:
obj->type_ = IVL_LO_NMOS;
break;
case NetLogic::NOR:
obj->type_ = IVL_LO_NOR;
break;
case NetLogic::NOT:
obj->type_ = IVL_LO_NOT;
break;
case NetLogic::NOTIF0:
obj->type_ = IVL_LO_NOTIF0;
break;
case NetLogic::NOTIF1:
obj->type_ = IVL_LO_NOTIF1;
break;
case NetLogic::OR:
obj->type_ = IVL_LO_OR;
break;
case NetLogic::PULLDOWN:
obj->type_ = IVL_LO_PULLDOWN;
break;
case NetLogic::PULLUP:
obj->type_ = IVL_LO_PULLUP;
break;
case NetLogic::RNMOS:
obj->type_ = IVL_LO_RNMOS;
break;
case NetLogic::RPMOS:
obj->type_ = IVL_LO_RPMOS;
break;
case NetLogic::PMOS:
obj->type_ = IVL_LO_PMOS;
break;
case NetLogic::XNOR:
obj->type_ = IVL_LO_XNOR;
break;
case NetLogic::XOR:
obj->type_ = IVL_LO_XOR;
break;
default:
assert(0);
obj->type_ = IVL_LO_NONE;
break;
}
/* Connect all the ivl_nexus_t objects to the pins of the
device. */
obj->npins_ = net->pin_count();
obj->pins_ = new ivl_nexus_t[obj->npins_];
ivl_nexus_ptr_t out_ptr = 0;
for (unsigned idx = 0 ; idx < obj->npins_ ; idx += 1) {
const Nexus*nex = net->pin(idx).nexus();
assert(nex->t_cookie());
obj->pins_[idx] = nex->t_cookie();
ivl_nexus_ptr_t tmp = nexus_log_add(obj->pins_[idx], obj, idx);
if (idx == 0)
out_ptr = tmp;
}
switch (net->pin(0).drive0()) {
case Link::HIGHZ:
out_ptr->drive0 = IVL_DR_HiZ;
break;
case Link::WEAK:
out_ptr->drive0 = IVL_DR_WEAK;
break;
case Link::PULL:
out_ptr->drive0 = IVL_DR_PULL;
break;
case Link::STRONG:
out_ptr->drive0 = IVL_DR_STRONG;
break;
case Link::SUPPLY:
out_ptr->drive0 = IVL_DR_SUPPLY;
break;
}
switch (net->pin(0).drive1()) {
case Link::HIGHZ:
out_ptr->drive1 = IVL_DR_HiZ;
break;
case Link::WEAK:
out_ptr->drive1 = IVL_DR_WEAK;
break;
case Link::PULL:
out_ptr->drive1 = IVL_DR_PULL;
break;
case Link::STRONG:
out_ptr->drive1 = IVL_DR_STRONG;
break;
case Link::SUPPLY:
out_ptr->drive1 = IVL_DR_SUPPLY;
break;
}
assert(net->scope());
ivl_scope_t scope = find_scope(des_, net->scope());
assert(scope);
obj->scope_= scope;
obj->name_ = net->name();
logic_attributes(obj, net);
make_logic_delays_(obj, net);
scope_add_logic(scope, obj);
}
bool dll_target::sign_extend(const NetSignExtend*net)
{
struct ivl_lpm_s*obj = new struct ivl_lpm_s;
obj->type = IVL_LPM_SIGN_EXT;
obj->width = net->width();
obj->name = net->name();
obj->scope = find_scope(des_, net->scope());
assert(obj->scope);
const Nexus*nex;
nex = net->pin(0).nexus();
assert(nex->t_cookie());
obj->u_.reduce.q = nex->t_cookie();
nexus_lpm_add(obj->u_.reduce.q, obj, 0, IVL_DR_STRONG, IVL_DR_STRONG);
nex = net->pin(1).nexus();
assert(nex->t_cookie());
obj->u_.reduce.a = nex->t_cookie();
nexus_lpm_add(obj->u_.reduce.a, obj, 1, IVL_DR_HiZ, IVL_DR_HiZ);
scope_add_lpm(obj->scope, obj);
return true;
}
bool dll_target::ureduce(const NetUReduce*net)
{
struct ivl_lpm_s*obj = new struct ivl_lpm_s;
switch (net->type()) {
case NetUReduce::NONE:
assert(0);
return false;
case NetUReduce::AND:
obj->type = IVL_LPM_RE_AND;
break;
case NetUReduce::OR:
obj->type = IVL_LPM_RE_OR;
break;
case NetUReduce::XOR:
obj->type = IVL_LPM_RE_XOR;
break;
case NetUReduce::NAND:
obj->type = IVL_LPM_RE_NAND;
break;
case NetUReduce::NOR:
obj->type = IVL_LPM_RE_NOR;
break;
case NetUReduce::XNOR:
obj->type = IVL_LPM_RE_XNOR;
break;
}
obj->name = net->name();
obj->scope = find_scope(des_, net->scope());
assert(obj->scope);
obj->width = net->width();
const Nexus*nex;
nex = net->pin(0).nexus();
assert(nex->t_cookie());
obj->u_.reduce.q = nex->t_cookie();
nexus_lpm_add(obj->u_.reduce.q, obj, 0, IVL_DR_STRONG, IVL_DR_STRONG);
nex = net->pin(1).nexus();
assert(nex->t_cookie());
obj->u_.reduce.a = nex->t_cookie();
nexus_lpm_add(obj->u_.reduce.a, obj, 1, IVL_DR_HiZ, IVL_DR_HiZ);
scope_add_lpm(obj->scope, obj);