609 lines
15 KiB
C++
609 lines
15 KiB
C++
/*
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* Copyright (c) 2011-2013 Stephen Williams (steve@icarus.com)
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* Copyright CERN 2013 / Stephen Williams (steve@icarus.com)
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* Copyright CERN 2015
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* @author Maciej Suminski (maciej.suminski@cern.ch)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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# include "sequential.h"
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# include "expression.h"
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# include "architec.h"
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# include "package.h"
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# include "compiler.h"
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# include "subprogram.h"
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# include <iostream>
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# include <cstdio>
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# include <typeinfo>
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# include <ivl_assert.h>
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int SequentialStmt::emit(ostream&out, Entity*, ScopeBase*)
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{
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out << " // " << get_fileline() << ": internal error: "
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<< "I don't know how to emit this sequential statement! "
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<< "type=" << typeid(*this).name() << endl;
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return 1;
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}
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void SequentialStmt::write_to_stream(std::ostream&fd)
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{
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fd << " // " << get_fileline() << ": internal error: "
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<< "I don't know how to write_to_stream this sequential statement! "
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<< "type=" << typeid(*this).name() << endl;
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}
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int IfSequential::emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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out << "if (";
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errors += cond_->emit(out, ent, scope);
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out << ") begin" << endl;
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for (list<SequentialStmt*>::iterator cur = if_.begin()
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; cur != if_.end() ; ++cur)
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errors += (*cur)->emit(out, ent, scope);
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for (list<IfSequential::Elsif*>::iterator cur = elsif_.begin()
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; cur != elsif_.end() ; ++cur) {
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out << "end else if (";
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errors += (*cur)->condition_emit(out, ent, scope);
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out << ") begin" << endl;
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errors += (*cur)->statement_emit(out, ent, scope);
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}
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if (! else_.empty()) {
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out << "end else begin" << endl;
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for (list<SequentialStmt*>::iterator cur = else_.begin()
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; cur != else_.end() ; ++cur)
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errors += (*cur)->emit(out, ent, scope);
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}
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out << "end" << endl;
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return errors;
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}
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void IfSequential::write_to_stream(std::ostream&fd)
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{
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fd << "if ";
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cond_->write_to_stream(fd);
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fd << " then " << endl;
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for (list<SequentialStmt*>::iterator cur = if_.begin()
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; cur != if_.end() ; ++cur)
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(*cur)->write_to_stream(fd);
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for (list<IfSequential::Elsif*>::iterator cur = elsif_.begin()
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; cur != elsif_.end() ; ++cur) {
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fd << "elsif ";
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(*cur)->condition_write_to_stream(fd);
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fd << " " << endl;
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(*cur)->statement_write_to_stream(fd);
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}
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if (! else_.empty()) {
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fd << " else " << endl;
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for (list<SequentialStmt*>::iterator cur = else_.begin()
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; cur != else_.end() ; ++cur)
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(*cur)->write_to_stream(fd);
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}
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fd << "end if;" << endl;
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}
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int IfSequential::Elsif::condition_emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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return cond_->emit(out, ent, scope);
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}
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int IfSequential::Elsif::statement_emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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for (list<SequentialStmt*>::iterator cur = if_.begin()
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; cur != if_.end() ; ++cur)
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errors += (*cur)->emit(out, ent, scope);
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return errors;
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}
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void IfSequential::Elsif::condition_write_to_stream(ostream&fd)
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{
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cond_->write_to_stream(fd);
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}
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void IfSequential::Elsif::statement_write_to_stream(ostream&fd)
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{
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for (list<SequentialStmt*>::iterator cur = if_.begin()
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; cur != if_.end() ; ++cur)
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(*cur)->write_to_stream(fd);
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}
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int ReturnStmt::emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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out << "return ";
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errors += val_->emit(out, ent, scope);
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out << ";" << endl;
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return errors;
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}
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void ReturnStmt::write_to_stream(ostream&fd)
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{
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fd << "return ";
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val_->write_to_stream(fd);
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fd << ";" << endl;
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}
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int SignalSeqAssignment::emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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errors += lval_->emit(out, ent, scope);
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if (waveform_.size() != 1) {
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out << "/* Confusing waveform? */;" << endl;
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errors += 1;
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} else {
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Expression*tmp = waveform_.front();
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out << " <= ";
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errors += tmp->emit(out, ent, scope);
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out << ";" << endl;
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}
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return errors;
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}
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void SignalSeqAssignment::write_to_stream(ostream&fd)
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{
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lval_->write_to_stream(fd);
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if (waveform_.size() != 1) {
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fd << "-- Confusing waveform?" << endl;
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} else {
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Expression*tmp = waveform_.front();
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fd << " <= ";
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tmp->write_to_stream(fd);
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fd << ";" << endl;
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}
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}
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int VariableSeqAssignment::emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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errors += lval_->emit(out, ent, scope);
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out << " = ";
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errors += rval_->emit(out, ent, scope);
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out << ";" << endl;
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return errors;
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}
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void VariableSeqAssignment::write_to_stream(ostream&fd)
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{
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lval_->write_to_stream(fd);
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fd << " := ";
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rval_->write_to_stream(fd);
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fd << ";" << endl;
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}
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int ProcedureCall::emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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std::vector<Expression*>params;
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if(param_list_) {
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params.reserve(param_list_->size());
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for(std::list<named_expr_t*>::iterator it = param_list_->begin();
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it != param_list_->end(); ++it)
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params.push_back((*it)->expr());
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}
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const Package*pkg = dynamic_cast<const Package*> (def_->get_parent());
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if (pkg != 0)
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out << "\\" << pkg->name() << " ::";
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errors += def_->emit_name(params, out, ent, scope);
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out << " (";
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if(param_list_) {
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errors += def_->emit_args(params, out, ent, scope);
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}
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out << ");" << endl;
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return errors;
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}
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int LoopStatement::emit_substatements(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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for (list<SequentialStmt*>::iterator cur = stmts_.begin()
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; cur != stmts_.end() ; ++cur) {
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SequentialStmt*tmp = *cur;
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errors += tmp->emit(out, ent, scope);
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}
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return errors;
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}
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void LoopStatement::write_to_stream_substatements(ostream&fd)
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{
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for (list<SequentialStmt*>::iterator cur = stmts_.begin()
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; cur != stmts_.end() ; ++cur) {
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SequentialStmt*tmp = *cur;
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tmp->write_to_stream(fd);
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}
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}
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int CaseSeqStmt::emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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out << "case (";
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errors += cond_->emit(out, ent, scope);
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out << ")" << endl;
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for (list<CaseStmtAlternative*>::iterator cur = alt_.begin()
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; cur != alt_.end() ; ++cur) {
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CaseStmtAlternative*curp = *cur;
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errors += curp ->emit(out, ent, scope);
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}
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out << "endcase" << endl;
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return errors;
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}
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void CaseSeqStmt::write_to_stream(ostream&fd)
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{
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fd << "case ";
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cond_->write_to_stream(fd);
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fd << " is" << endl;
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for (list<CaseStmtAlternative*>::iterator cur = alt_.begin()
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; cur != alt_.end() ; ++cur) {
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CaseStmtAlternative*curp = *cur;
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curp ->write_to_stream(fd);
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}
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fd << "end case;" << endl;
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}
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int CaseSeqStmt::CaseStmtAlternative::emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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bool first = true;
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if (exp_) {
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for (list<Expression*>::iterator it = exp_->begin(); it != exp_->end(); ++it) {
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if(first)
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first = false;
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else
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out << ",";
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errors += (*it)->emit(out, ent, scope);
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}
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} else {
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out << "default";
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}
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out << ":" << endl;
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SequentialStmt*curp;
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switch (stmts_.size()) {
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case 0:
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out << "/* no op */;" << endl;
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break;
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case 1:
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curp = stmts_.front();
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errors += curp->emit(out, ent, scope);
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break;
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default:
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out << "begin" << endl;
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for (list<SequentialStmt*>::iterator cur = stmts_.begin()
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; cur != stmts_.end() ; ++cur) {
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curp = *cur;
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errors += curp->emit(out, ent, scope);
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}
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out << "end" << endl;
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break;
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}
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return errors;
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}
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void CaseSeqStmt::CaseStmtAlternative::write_to_stream(ostream&fd)
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{
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fd << "when ";
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if (exp_) {
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bool first = true;
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for (list<Expression*>::iterator it = exp_->begin(); it != exp_->end(); ++it) {
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if(first)
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first = false;
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else
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fd << "|";
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(*it)->write_to_stream(fd);
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}
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} else {
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fd << "others" << endl;
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}
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fd << "=>" << endl;
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for (list<SequentialStmt*>::iterator cur = stmts_.begin()
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; cur != stmts_.end() ; ++cur) {
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(*cur)->write_to_stream(fd);
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}
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}
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int WhileLoopStatement::emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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out << "while(";
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errors += cond_->emit(out, ent, scope);
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out << ") begin" << endl;
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errors += emit_substatements(out, ent, scope);
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out << "end" << endl;
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return errors;
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}
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void WhileLoopStatement::write_to_stream(ostream&out)
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{
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out << "while(";
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cond_->write_to_stream(out);
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out << ") loop" << endl;
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write_to_stream_substatements(out);
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out << "end loop;" << endl;
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}
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int ForLoopStatement::emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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ivl_assert(*this, range_);
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int64_t start_val;
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bool start_rc = range_->left()->evaluate(ent, scope, start_val);
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int64_t finish_val;
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bool finish_rc = range_->right()->evaluate(ent, scope, finish_val);
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perm_string scope_name = loop_name();
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if (scope_name.nil()) {
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char buf[80];
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snprintf(buf, sizeof buf, "__%p", this);
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scope_name = lex_strings.make(buf);
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}
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out << "begin : " << scope_name << endl;
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out << "longint \\" << it_ << " ;" << endl;
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if(!start_rc || !finish_rc) {
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// Could not evaluate one of the loop boundaries, it has to be
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// determined during the run-time
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errors += emit_runtime_(out, ent, scope);
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} else {
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ExpRange::range_dir_t dir = range_->direction();
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if(dir == ExpRange::AUTO)
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dir = start_val < finish_val ? ExpRange::TO : ExpRange::DOWNTO;
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if ((dir == ExpRange::DOWNTO && start_val < finish_val) ||
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(dir == ExpRange::TO && start_val > finish_val)) {
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out << "begin /* Degenerate loop at " << get_fileline()
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<< ": " << start_val;
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out << (dir == ExpRange::DOWNTO ? " downto " : " to ");
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out << finish_val << " */ end" << endl
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<< "end" << endl;
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return errors;
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}
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out << "for (\\" << it_ << " = " << start_val << " ; ";
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if (dir == ExpRange::DOWNTO)
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out << "\\" << it_ << " >= " << finish_val;
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else
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out << "\\" << it_ << " <= " << finish_val;
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out << "; \\" << it_ << " = \\" << it_;
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if (dir == ExpRange::DOWNTO)
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out << " - 1)";
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else
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out << " + 1)";
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}
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out << " begin" << endl;
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errors += emit_substatements(out, ent, scope);
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out << "end" << endl;
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out << "end /* " << scope_name << " */" << endl;
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return errors;
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}
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void ForLoopStatement::write_to_stream(ostream&fd)
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{
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fd << "for " << it_ << " in ";
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range_->write_to_stream(fd);
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fd << " loop" << endl;
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write_to_stream_substatements(fd);
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fd << "end loop;" << endl;
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}
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int ForLoopStatement::emit_runtime_(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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out << "for (\\" << it_ << " = ";
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errors += range_->left()->emit(out, ent, scope);
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// Twisted way of determining the loop direction at runtime
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out << " ;\n(";
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errors += range_->left()->emit(out, ent, scope);
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out << " < ";
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errors += range_->right()->emit(out, ent, scope);
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out << " ? \\" << it_ << " <= ";
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errors += range_->right()->emit(out, ent, scope);
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out << " : \\" << it_ << " >= ";
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errors += range_->right()->emit(out, ent, scope);
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out << ");\n\\" << it_ << " = \\" << it_ << " + (";
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errors += range_->left()->emit(out, ent, scope);
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out << " < ";
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errors += range_->right()->emit(out, ent, scope);
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out << " ? 1 : -1))";
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return errors;
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}
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int ReportStmt::emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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out << "$display(\"** ";
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switch(severity_)
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{
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case NOTE: out << "Note"; break;
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case WARNING: out << "Warning"; break;
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case ERROR: out << "Error"; break;
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case FAILURE: out << "Failure"; break;
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case UNSPECIFIED: ivl_assert(*this, false); break;
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}
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out << ": \",";
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msg_->emit(out, ent, scope);
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out << ",\" (" << get_fileline() << ")\");";
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if(severity_ == FAILURE)
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out << "$finish();";
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out << std::endl;
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return 0;
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}
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void ReportStmt::write_to_stream(std::ostream&fd)
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{
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fd << "report ";
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msg_->write_to_stream(fd);
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fd << "severity ";
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switch(severity_)
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{
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case NOTE: fd << "NOTE"; break;
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case WARNING: fd << "WARNING"; break;
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case ERROR: fd << "ERROR"; break;
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case FAILURE: fd << "FAILURE"; break;
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case UNSPECIFIED: break;
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}
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fd << ";" << std::endl;
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}
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int AssertStmt::emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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out << "if(!(";
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errors += cond_->emit(out, ent, scope);
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out << ")) begin" << std::endl;
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errors += ReportStmt::emit(out, ent, scope);
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out << "end" << std::endl;
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return errors;
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}
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void AssertStmt::write_to_stream(std::ostream&fd)
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{
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fd << "assert ";
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cond_->write_to_stream(fd);
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fd << std::endl;
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ReportStmt::write_to_stream(fd);
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}
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int WaitForStmt::emit(ostream&out, Entity*ent, ScopeBase*scope)
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{
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int errors = 0;
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out << "#(";
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errors += delay_->emit(out, ent, scope);
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out << ");" << std::endl;
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return errors;
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}
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void WaitForStmt::write_to_stream(std::ostream&fd)
|
|
{
|
|
fd << "wait for ";
|
|
delay_->write_to_stream(fd);
|
|
}
|
|
|
|
int WaitStmt::emit(ostream&out, Entity*ent, ScopeBase*scope)
|
|
{
|
|
int errors = 0;
|
|
|
|
switch(type_) {
|
|
case ON:
|
|
out << "@(";
|
|
break;
|
|
|
|
case UNTIL:
|
|
if(!sens_list_.empty()) {
|
|
out << "@(";
|
|
|
|
for(std::set<ExpName*>::iterator it = sens_list_.begin();
|
|
it != sens_list_.end(); ++it) {
|
|
if(it != sens_list_.begin())
|
|
out << ",";
|
|
|
|
(*it)->emit(out, ent, scope);
|
|
}
|
|
|
|
out << "); ";
|
|
}
|
|
|
|
out << "wait(";
|
|
break;
|
|
}
|
|
|
|
errors += expr_->emit(out, ent, scope);
|
|
out << ");" << endl;
|
|
|
|
return errors;
|
|
}
|
|
|
|
void WaitStmt::write_to_stream(std::ostream&fd)
|
|
{
|
|
switch(type_) {
|
|
case ON:
|
|
fd << "wait on ";
|
|
break;
|
|
|
|
case UNTIL:
|
|
fd << "wait until ";
|
|
break;
|
|
}
|
|
|
|
expr_->write_to_stream(fd);
|
|
}
|