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Progress in SMV back-end

This commit is contained in:
Clifford Wolf 2015-06-17 09:56:42 +02:00
parent 99100f367d
commit 8e84418225
1 changed files with 72 additions and 11 deletions
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83
backends/smv/smv.cc
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@ -166,7 +166,7 @@ struct SmvWorker
f << stringf(" VAR\n");
for (auto wire : module->wires())
f << stringf(" %s : unsigned word[%d];\n", cid(wire->name), wire->width);
f << stringf(" %s : unsigned word[%d]; -- %s\n", cid(wire->name), wire->width, log_id(wire));
for (auto cell : module->cells())
{
@ -374,8 +374,65 @@ struct SmvWorker
continue;
}
// FIXME: $_BUF_, $_NOT_, $_AND_, $_NAND_, $_OR_, $_NOR_,
// $_XOR_, $_XNOR_, $_MUX_, $_AOI3_, $_OAI3_, $_AOI4_, $_OAI4_
if (cell->type.in("$_BUF_", "$_NOT_"))
{
string op = cell->type == "$_NOT_" ? "!" : "";
assignments.push_back(stringf("%s := %s%s;", lvalue(cell->getPort("\\Y")), op.c_str(), rvalue(cell->getPort("\\A"))));
continue;
}
if (cell->type.in("$_AND_", "$_NAND_", "$_OR_", "$_NOR_", "$_XOR_", "$_XNOR_"))
{
string op;
if (cell->type.in("$_AND_", "$_NAND_")) op = "&";
if (cell->type.in("$_OR_", "$_NOR_")) op = "|";
if (cell->type.in("$_XOR_")) op = "xor";
if (cell->type.in("$_XNOR_")) op = "xnor";
if (cell->type.in("$_NAND_", "$_NOR_"))
assignments.push_back(stringf("%s := !(%s %s %s);", lvalue(cell->getPort("\\Y")),
rvalue(cell->getPort("\\A")), op.c_str(), rvalue(cell->getPort("\\B"))));
else
assignments.push_back(stringf("%s := %s %s %s;", lvalue(cell->getPort("\\Y")),
rvalue(cell->getPort("\\A")), op.c_str(), rvalue(cell->getPort("\\B"))));
continue;
}
if (cell->type == "$_MUX_")
{
assignments.push_back(stringf("%s := %s ? %s : %s;", lvalue(cell->getPort("\\Y")),
rvalue(cell->getPort("\\S")), rvalue(cell->getPort("\\B")), rvalue(cell->getPort("\\A"))));
continue;
}
if (cell->type == "$_AOI3_")
{
assignments.push_back(stringf("%s := !((%s & %s) | %s);", lvalue(cell->getPort("\\Y")),
rvalue(cell->getPort("\\A")), rvalue(cell->getPort("\\B")), rvalue(cell->getPort("\\C"))));
continue;
}
if (cell->type == "$_OAI3_")
{
assignments.push_back(stringf("%s := !((%s | %s) & %s);", lvalue(cell->getPort("\\Y")),
rvalue(cell->getPort("\\A")), rvalue(cell->getPort("\\B")), rvalue(cell->getPort("\\C"))));
continue;
}
if (cell->type == "$_AOI4_")
{
assignments.push_back(stringf("%s := !((%s & %s) | (%s & %s));", lvalue(cell->getPort("\\Y")),
rvalue(cell->getPort("\\A")), rvalue(cell->getPort("\\B")), rvalue(cell->getPort("\\C")), rvalue(cell->getPort("\\D"))));
continue;
}
if (cell->type == "$_OAI4_")
{
assignments.push_back(stringf("%s := !((%s | %s) & (%s | %s));", lvalue(cell->getPort("\\Y")),
rvalue(cell->getPort("\\A")), rvalue(cell->getPort("\\B")), rvalue(cell->getPort("\\C")), rvalue(cell->getPort("\\D"))));
continue;
}
if (cell->type[0] == '$')
log_error("Found currently unsupported cell type %s (%s.%s).\n", log_id(cell->type), log_id(module), log_id(cell));
@ -473,7 +530,7 @@ struct SmvBackend : public Backend {
while (indent < GetSize(line) && (line[indent] == ' ' || line[indent] == '\t'))
indent++;
if (line[indent] == '$')
if (line[indent] == '%')
{
vector<string> stmt = split_tokens(line);
@ -483,6 +540,7 @@ struct SmvBackend : public Backend {
if (GetSize(stmt) == 2 && stmt[0] == "%module")
{
Module *module = design->module(RTLIL::escape_id(stmt[1]));
modules.erase(module);
if (module == nullptr)
log_error("Module '%s' not found.\n", stmt[1].c_str());
@ -504,16 +562,19 @@ struct SmvBackend : public Backend {
}
}
*f << stringf("-- SMV description generated by %s\n", yosys_version_str);
if (!modules.empty())
{
*f << stringf("-- SMV description generated by %s\n", yosys_version_str);
for (auto module : modules) {
log("Creating SMV representation of module %s.\n", log_id(module));
SmvWorker worker(module, verbose, *f);
worker.run();
for (auto module : modules) {
log("Creating SMV representation of module %s.\n", log_id(module));
SmvWorker worker(module, verbose, *f);
worker.run();
}
*f << stringf("-- end of yosys output\n");
}
*f << stringf("-- end of yosys output\n");
if (template_f.is_open()) {
std::string line;
while (std::getline(template_f, line))