mirror of https://github.com/YosysHQ/yosys.git
590 lines
16 KiB
C++
590 lines
16 KiB
C++
/*
|
|
* yosys -- Yosys Open SYnthesis Suite
|
|
*
|
|
* Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
#include "kernel/yosys.h"
|
|
|
|
YOSYS_NAMESPACE_BEGIN
|
|
|
|
struct JsonNode
|
|
{
|
|
char type; // S=String, N=Number, A=Array, D=Dict
|
|
string data_string;
|
|
int64_t data_number;
|
|
vector<JsonNode*> data_array;
|
|
dict<string, JsonNode*> data_dict;
|
|
vector<string> data_dict_keys;
|
|
|
|
JsonNode(std::istream &f)
|
|
{
|
|
type = 0;
|
|
data_number = 0;
|
|
|
|
while (1)
|
|
{
|
|
int ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
log_error("Unexpected EOF in JSON file.\n");
|
|
|
|
if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n')
|
|
continue;
|
|
|
|
if (ch == '"')
|
|
{
|
|
type = 'S';
|
|
|
|
while (1)
|
|
{
|
|
ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
log_error("Unexpected EOF in JSON string.\n");
|
|
|
|
if (ch == '"')
|
|
break;
|
|
|
|
if (ch == '\\') {
|
|
int ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
log_error("Unexpected EOF in JSON string.\n");
|
|
}
|
|
|
|
data_string += ch;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (('0' <= ch && ch <= '9') || ch == '-')
|
|
{
|
|
bool negative = false;
|
|
type = 'N';
|
|
if (ch == '-') {
|
|
data_number = 0;
|
|
negative = true;
|
|
} else {
|
|
data_number = ch - '0';
|
|
}
|
|
|
|
data_string += ch;
|
|
|
|
while (1)
|
|
{
|
|
ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
break;
|
|
|
|
if (ch == '.')
|
|
goto parse_real;
|
|
|
|
if (ch < '0' || '9' < ch) {
|
|
f.unget();
|
|
break;
|
|
}
|
|
|
|
data_number = data_number*10 + (ch - '0');
|
|
data_string += ch;
|
|
}
|
|
|
|
data_number = negative ? -data_number : data_number;
|
|
data_string = "";
|
|
break;
|
|
|
|
parse_real:
|
|
type = 'S';
|
|
data_number = 0;
|
|
data_string += ch;
|
|
|
|
while (1)
|
|
{
|
|
ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
break;
|
|
|
|
if (ch < '0' || '9' < ch) {
|
|
f.unget();
|
|
break;
|
|
}
|
|
|
|
data_string += ch;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (ch == '[')
|
|
{
|
|
type = 'A';
|
|
|
|
while (1)
|
|
{
|
|
ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
log_error("Unexpected EOF in JSON file.\n");
|
|
|
|
if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n' || ch == ',')
|
|
continue;
|
|
|
|
if (ch == ']')
|
|
break;
|
|
|
|
f.unget();
|
|
data_array.push_back(new JsonNode(f));
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
if (ch == '{')
|
|
{
|
|
type = 'D';
|
|
|
|
while (1)
|
|
{
|
|
ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
log_error("Unexpected EOF in JSON file.\n");
|
|
|
|
if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n' || ch == ',')
|
|
continue;
|
|
|
|
if (ch == '}')
|
|
break;
|
|
|
|
f.unget();
|
|
JsonNode key(f);
|
|
|
|
while (1)
|
|
{
|
|
ch = f.get();
|
|
|
|
if (ch == EOF)
|
|
log_error("Unexpected EOF in JSON file.\n");
|
|
|
|
if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n' || ch == ':')
|
|
continue;
|
|
|
|
f.unget();
|
|
break;
|
|
}
|
|
|
|
JsonNode *value = new JsonNode(f);
|
|
|
|
if (key.type != 'S')
|
|
log_error("Unexpected non-string key in JSON dict.\n");
|
|
|
|
data_dict[key.data_string] = value;
|
|
data_dict_keys.push_back(key.data_string);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
log_error("Unexpected character in JSON file: '%c'\n", ch);
|
|
}
|
|
}
|
|
|
|
~JsonNode()
|
|
{
|
|
for (auto it : data_array)
|
|
delete it;
|
|
for (auto &it : data_dict)
|
|
delete it.second;
|
|
}
|
|
};
|
|
|
|
Const json_parse_attr_param_value(JsonNode *node)
|
|
{
|
|
Const value;
|
|
|
|
if (node->type == 'S') {
|
|
string &s = node->data_string;
|
|
size_t cursor = s.find_first_not_of("01xz");
|
|
if (cursor == string::npos) {
|
|
value = Const::from_string(s);
|
|
} else if (s.find_first_not_of(' ', cursor) == string::npos) {
|
|
value = Const(s.substr(0, GetSize(s)-1));
|
|
} else {
|
|
value = Const(s);
|
|
}
|
|
} else
|
|
if (node->type == 'N') {
|
|
value = Const(node->data_number, 32);
|
|
if (node->data_number < 0)
|
|
value.flags |= RTLIL::CONST_FLAG_SIGNED;
|
|
} else
|
|
if (node->type == 'A') {
|
|
log_error("JSON attribute or parameter value is an array.\n");
|
|
} else
|
|
if (node->type == 'D') {
|
|
log_error("JSON attribute or parameter value is a dict.\n");
|
|
} else {
|
|
log_abort();
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
void json_parse_attr_param(dict<IdString, Const> &results, JsonNode *node)
|
|
{
|
|
if (node->type != 'D')
|
|
log_error("JSON attributes or parameters node is not a dictionary.\n");
|
|
|
|
for (auto it : node->data_dict)
|
|
{
|
|
IdString key = RTLIL::escape_id(it.first.c_str());
|
|
Const value = json_parse_attr_param_value(it.second);
|
|
results[key] = value;
|
|
}
|
|
}
|
|
|
|
void json_import(Design *design, string &modname, JsonNode *node)
|
|
{
|
|
log("Importing module %s from JSON tree.\n", modname.c_str());
|
|
|
|
Module *module = new RTLIL::Module;
|
|
module->name = RTLIL::escape_id(modname.c_str());
|
|
|
|
if (design->module(module->name))
|
|
log_error("Re-definition of module %s.\n", log_id(module->name));
|
|
|
|
design->add(module);
|
|
|
|
if (node->data_dict.count("attributes"))
|
|
json_parse_attr_param(module->attributes, node->data_dict.at("attributes"));
|
|
|
|
dict<int, SigBit> signal_bits;
|
|
|
|
if (node->data_dict.count("ports"))
|
|
{
|
|
JsonNode *ports_node = node->data_dict.at("ports");
|
|
|
|
if (ports_node->type != 'D')
|
|
log_error("JSON ports node is not a dictionary.\n");
|
|
|
|
for (int port_id = 1; port_id <= GetSize(ports_node->data_dict_keys); port_id++)
|
|
{
|
|
IdString port_name = RTLIL::escape_id(ports_node->data_dict_keys[port_id-1].c_str());
|
|
JsonNode *port_node = ports_node->data_dict.at(ports_node->data_dict_keys[port_id-1]);
|
|
|
|
if (port_node->type != 'D')
|
|
log_error("JSON port node '%s' is not a dictionary.\n", log_id(port_name));
|
|
|
|
if (port_node->data_dict.count("direction") == 0)
|
|
log_error("JSON port node '%s' has no direction attribute.\n", log_id(port_name));
|
|
|
|
if (port_node->data_dict.count("bits") == 0)
|
|
log_error("JSON port node '%s' has no bits attribute.\n", log_id(port_name));
|
|
|
|
JsonNode *port_direction_node = port_node->data_dict.at("direction");
|
|
JsonNode *port_bits_node = port_node->data_dict.at("bits");
|
|
|
|
if (port_direction_node->type != 'S')
|
|
log_error("JSON port node '%s' has non-string direction attribute.\n", log_id(port_name));
|
|
|
|
if (port_bits_node->type != 'A')
|
|
log_error("JSON port node '%s' has non-array bits attribute.\n", log_id(port_name));
|
|
|
|
Wire *port_wire = module->wire(port_name);
|
|
|
|
if (port_wire == nullptr)
|
|
port_wire = module->addWire(port_name, GetSize(port_bits_node->data_array));
|
|
|
|
if (port_node->data_dict.count("upto") != 0) {
|
|
JsonNode *val = port_node->data_dict.at("upto");
|
|
if (val->type == 'N')
|
|
port_wire->upto = val->data_number != 0;
|
|
}
|
|
|
|
if (port_node->data_dict.count("signed") != 0) {
|
|
JsonNode *val = port_node->data_dict.at("signed");
|
|
if (val->type == 'N')
|
|
port_wire->is_signed = val->data_number != 0;
|
|
}
|
|
|
|
if (port_node->data_dict.count("offset") != 0) {
|
|
JsonNode *val = port_node->data_dict.at("offset");
|
|
if (val->type == 'N')
|
|
port_wire->start_offset = val->data_number;
|
|
}
|
|
|
|
if (port_direction_node->data_string == "input") {
|
|
port_wire->port_input = true;
|
|
} else
|
|
if (port_direction_node->data_string == "output") {
|
|
port_wire->port_output = true;
|
|
} else
|
|
if (port_direction_node->data_string == "inout") {
|
|
port_wire->port_input = true;
|
|
port_wire->port_output = true;
|
|
} else
|
|
log_error("JSON port node '%s' has invalid '%s' direction attribute.\n", log_id(port_name), port_direction_node->data_string.c_str());
|
|
|
|
port_wire->port_id = port_id;
|
|
|
|
for (int i = 0; i < GetSize(port_bits_node->data_array); i++)
|
|
{
|
|
JsonNode *bitval_node = port_bits_node->data_array.at(i);
|
|
SigBit sigbit(port_wire, i);
|
|
|
|
if (bitval_node->type == 'S') {
|
|
if (bitval_node->data_string == "0")
|
|
module->connect(sigbit, State::S0);
|
|
else if (bitval_node->data_string == "1")
|
|
module->connect(sigbit, State::S1);
|
|
else if (bitval_node->data_string == "x")
|
|
module->connect(sigbit, State::Sx);
|
|
else if (bitval_node->data_string == "z")
|
|
module->connect(sigbit, State::Sz);
|
|
else
|
|
log_error("JSON port node '%s' has invalid '%s' bit string value on bit %d.\n",
|
|
log_id(port_name), bitval_node->data_string.c_str(), i);
|
|
} else
|
|
if (bitval_node->type == 'N') {
|
|
int bitidx = bitval_node->data_number;
|
|
if (signal_bits.count(bitidx)) {
|
|
if (port_wire->port_output) {
|
|
module->connect(sigbit, signal_bits.at(bitidx));
|
|
} else {
|
|
module->connect(signal_bits.at(bitidx), sigbit);
|
|
signal_bits[bitidx] = sigbit;
|
|
}
|
|
} else {
|
|
signal_bits[bitidx] = sigbit;
|
|
}
|
|
} else
|
|
log_error("JSON port node '%s' has invalid bit value on bit %d.\n", log_id(port_name), i);
|
|
}
|
|
}
|
|
|
|
module->fixup_ports();
|
|
}
|
|
|
|
if (node->data_dict.count("netnames"))
|
|
{
|
|
JsonNode *netnames_node = node->data_dict.at("netnames");
|
|
|
|
if (netnames_node->type != 'D')
|
|
log_error("JSON netnames node is not a dictionary.\n");
|
|
|
|
for (auto &net : netnames_node->data_dict)
|
|
{
|
|
IdString net_name = RTLIL::escape_id(net.first.c_str());
|
|
JsonNode *net_node = net.second;
|
|
|
|
if (net_node->type != 'D')
|
|
log_error("JSON netname node '%s' is not a dictionary.\n", log_id(net_name));
|
|
|
|
if (net_node->data_dict.count("bits") == 0)
|
|
log_error("JSON netname node '%s' has no bits attribute.\n", log_id(net_name));
|
|
|
|
JsonNode *bits_node = net_node->data_dict.at("bits");
|
|
|
|
if (bits_node->type != 'A')
|
|
log_error("JSON netname node '%s' has non-array bits attribute.\n", log_id(net_name));
|
|
|
|
Wire *wire = module->wire(net_name);
|
|
|
|
if (wire == nullptr)
|
|
wire = module->addWire(net_name, GetSize(bits_node->data_array));
|
|
|
|
if (net_node->data_dict.count("upto") != 0) {
|
|
JsonNode *val = net_node->data_dict.at("upto");
|
|
if (val->type == 'N')
|
|
wire->upto = val->data_number != 0;
|
|
}
|
|
|
|
if (net_node->data_dict.count("offset") != 0) {
|
|
JsonNode *val = net_node->data_dict.at("offset");
|
|
if (val->type == 'N')
|
|
wire->start_offset = val->data_number;
|
|
}
|
|
|
|
for (int i = 0; i < GetSize(bits_node->data_array); i++)
|
|
{
|
|
JsonNode *bitval_node = bits_node->data_array.at(i);
|
|
SigBit sigbit(wire, i);
|
|
|
|
if (bitval_node->type == 'S') {
|
|
if (bitval_node->data_string == "0")
|
|
module->connect(sigbit, State::S0);
|
|
else if (bitval_node->data_string == "1")
|
|
module->connect(sigbit, State::S1);
|
|
else if (bitval_node->data_string == "x")
|
|
module->connect(sigbit, State::Sx);
|
|
else if (bitval_node->data_string == "z")
|
|
module->connect(sigbit, State::Sz);
|
|
else
|
|
log_error("JSON netname node '%s' has invalid '%s' bit string value on bit %d.\n",
|
|
log_id(net_name), bitval_node->data_string.c_str(), i);
|
|
} else
|
|
if (bitval_node->type == 'N') {
|
|
int bitidx = bitval_node->data_number;
|
|
if (signal_bits.count(bitidx)) {
|
|
if (sigbit != signal_bits.at(bitidx))
|
|
module->connect(sigbit, signal_bits.at(bitidx));
|
|
} else {
|
|
signal_bits[bitidx] = sigbit;
|
|
}
|
|
} else
|
|
log_error("JSON netname node '%s' has invalid bit value on bit %d.\n", log_id(net_name), i);
|
|
}
|
|
|
|
if (net_node->data_dict.count("attributes"))
|
|
json_parse_attr_param(wire->attributes, net_node->data_dict.at("attributes"));
|
|
}
|
|
}
|
|
|
|
if (node->data_dict.count("cells"))
|
|
{
|
|
JsonNode *cells_node = node->data_dict.at("cells");
|
|
|
|
if (cells_node->type != 'D')
|
|
log_error("JSON cells node is not a dictionary.\n");
|
|
|
|
for (auto &cell_node_it : cells_node->data_dict)
|
|
{
|
|
IdString cell_name = RTLIL::escape_id(cell_node_it.first.c_str());
|
|
JsonNode *cell_node = cell_node_it.second;
|
|
|
|
if (cell_node->type != 'D')
|
|
log_error("JSON cells node '%s' is not a dictionary.\n", log_id(cell_name));
|
|
|
|
if (cell_node->data_dict.count("type") == 0)
|
|
log_error("JSON cells node '%s' has no type attribute.\n", log_id(cell_name));
|
|
|
|
JsonNode *type_node = cell_node->data_dict.at("type");
|
|
|
|
if (type_node->type != 'S')
|
|
log_error("JSON cells node '%s' has a non-string type.\n", log_id(cell_name));
|
|
|
|
IdString cell_type = RTLIL::escape_id(type_node->data_string.c_str());
|
|
|
|
Cell *cell = module->addCell(cell_name, cell_type);
|
|
|
|
if (cell_node->data_dict.count("connections") == 0)
|
|
log_error("JSON cells node '%s' has no connections attribute.\n", log_id(cell_name));
|
|
|
|
JsonNode *connections_node = cell_node->data_dict.at("connections");
|
|
|
|
if (connections_node->type != 'D')
|
|
log_error("JSON cells node '%s' has non-dictionary connections attribute.\n", log_id(cell_name));
|
|
|
|
for (auto &conn_it : connections_node->data_dict)
|
|
{
|
|
IdString conn_name = RTLIL::escape_id(conn_it.first.c_str());
|
|
JsonNode *conn_node = conn_it.second;
|
|
|
|
if (conn_node->type != 'A')
|
|
log_error("JSON cells node '%s' connection '%s' is not an array.\n", log_id(cell_name), log_id(conn_name));
|
|
|
|
SigSpec sig;
|
|
|
|
for (int i = 0; i < GetSize(conn_node->data_array); i++)
|
|
{
|
|
JsonNode *bitval_node = conn_node->data_array.at(i);
|
|
|
|
if (bitval_node->type == 'S') {
|
|
if (bitval_node->data_string == "0")
|
|
sig.append(State::S0);
|
|
else if (bitval_node->data_string == "1")
|
|
sig.append(State::S1);
|
|
else if (bitval_node->data_string == "x")
|
|
sig.append(State::Sx);
|
|
else if (bitval_node->data_string == "z")
|
|
sig.append(State::Sz);
|
|
else
|
|
log_error("JSON cells node '%s' connection '%s' has invalid '%s' bit string value on bit %d.\n",
|
|
log_id(cell_name), log_id(conn_name), bitval_node->data_string.c_str(), i);
|
|
} else
|
|
if (bitval_node->type == 'N') {
|
|
int bitidx = bitval_node->data_number;
|
|
if (signal_bits.count(bitidx) == 0)
|
|
signal_bits[bitidx] = module->addWire(NEW_ID);
|
|
sig.append(signal_bits.at(bitidx));
|
|
} else
|
|
log_error("JSON cells node '%s' connection '%s' has invalid bit value on bit %d.\n",
|
|
log_id(cell_name), log_id(conn_name), i);
|
|
|
|
}
|
|
|
|
cell->setPort(conn_name, sig);
|
|
}
|
|
|
|
if (cell_node->data_dict.count("attributes"))
|
|
json_parse_attr_param(cell->attributes, cell_node->data_dict.at("attributes"));
|
|
|
|
if (cell_node->data_dict.count("parameters"))
|
|
json_parse_attr_param(cell->parameters, cell_node->data_dict.at("parameters"));
|
|
}
|
|
}
|
|
}
|
|
|
|
struct JsonFrontend : public Frontend {
|
|
JsonFrontend() : Frontend("json", "read JSON file") { }
|
|
void help() override
|
|
{
|
|
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
|
|
log("\n");
|
|
log(" read_json [filename]\n");
|
|
log("\n");
|
|
log("Load modules from a JSON file into the current design See \"help write_json\"\n");
|
|
log("for a description of the file format.\n");
|
|
log("\n");
|
|
}
|
|
void execute(std::istream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design) override
|
|
{
|
|
log_header(design, "Executing JSON frontend.\n");
|
|
|
|
size_t argidx;
|
|
for (argidx = 1; argidx < args.size(); argidx++) {
|
|
// std::string arg = args[argidx];
|
|
// if (arg == "-sop") {
|
|
// sop_mode = true;
|
|
// continue;
|
|
// }
|
|
break;
|
|
}
|
|
extra_args(f, filename, args, argidx);
|
|
|
|
JsonNode root(*f);
|
|
|
|
if (root.type != 'D')
|
|
log_error("JSON root node is not a dictionary.\n");
|
|
|
|
if (root.data_dict.count("modules") != 0)
|
|
{
|
|
JsonNode *modules = root.data_dict.at("modules");
|
|
|
|
if (modules->type != 'D')
|
|
log_error("JSON modules node is not a dictionary.\n");
|
|
|
|
for (auto &it : modules->data_dict)
|
|
json_import(design, it.first, it.second);
|
|
}
|
|
}
|
|
} JsonFrontend;
|
|
|
|
YOSYS_NAMESPACE_END
|