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/*
* 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.
*
* ---
*
* A very simple and straightforward backend for the RTLIL text
* representation.
*
*/
#include "rtlil_backend.h"
#include "kernel/yosys.h"
#include <errno.h>
USING_YOSYS_NAMESPACE
using namespace RTLIL_BACKEND;
YOSYS_NAMESPACE_BEGIN
void RTLIL_BACKEND::dump_const(std::ostream &f, const RTLIL::Const &data, int width, int offset, bool autoint)
{
if (width < 0)
width = data.bits.size() - offset;
if ((data.flags & RTLIL::CONST_FLAG_STRING) == 0 || width != (int)data.bits.size()) {
if (width == 32 && autoint) {
int32_t val = 0;
for (int i = 0; i < width; i++) {
log_assert(offset+i < (int)data.bits.size());
switch (data.bits[offset+i]) {
case State::S0: break;
case State::S1: val |= 1 << i; break;
default: val = -1; break;
}
}
if (val >= 0) {
f << stringf("%d", val);
return;
}
}
f << stringf("%d'", width);
for (int i = offset+width-1; i >= offset; i--) {
log_assert(i < (int)data.bits.size());
switch (data.bits[i]) {
case State::S0: f << stringf("0"); break;
case State::S1: f << stringf("1"); break;
case RTLIL::Sx: f << stringf("x"); break;
case RTLIL::Sz: f << stringf("z"); break;
case RTLIL::Sa: f << stringf("-"); break;
case RTLIL::Sm: f << stringf("m"); break;
}
}
} else {
f << stringf("\"");
std::string str = data.decode_string();
for (size_t i = 0; i < str.size(); i++) {
if (str[i] == '\n')
f << stringf("\\n");
else if (str[i] == '\t')
f << stringf("\\t");
else if (str[i] < 32)
f << stringf("\\%03o", str[i]);
else if (str[i] == '"')
f << stringf("\\\"");
else if (str[i] == '\\')
f << stringf("\\\\");
else
f << str[i];
}
f << stringf("\"");
}
}
void RTLIL_BACKEND::dump_sigchunk(std::ostream &f, const RTLIL::SigChunk &chunk, bool autoint)
{
if (chunk.wire == NULL) {
dump_const(f, chunk.data, chunk.width, chunk.offset, autoint);
} else {
if (chunk.width == chunk.wire->width && chunk.offset == 0)
f << stringf("%s", chunk.wire->name.c_str());
else if (chunk.width == 1)
f << stringf("%s [%d]", chunk.wire->name.c_str(), chunk.offset);
else
f << stringf("%s [%d:%d]", chunk.wire->name.c_str(), chunk.offset+chunk.width-1, chunk.offset);
}
}
void RTLIL_BACKEND::dump_sigspec(std::ostream &f, const RTLIL::SigSpec &sig, bool autoint)
{
if (sig.is_chunk()) {
dump_sigchunk(f, sig.as_chunk(), autoint);
} else {
f << stringf("{ ");
for (auto it = sig.chunks().rbegin(); it != sig.chunks().rend(); ++it) {
dump_sigchunk(f, *it, false);
f << stringf(" ");
}
f << stringf("}");
}
}
void RTLIL_BACKEND::dump_wire(std::ostream &f, std::string indent, const RTLIL::Wire *wire)
{
for (auto &it : wire->attributes) {
f << stringf("%s" "attribute %s ", indent.c_str(), it.first.c_str());
dump_const(f, it.second);
f << stringf("\n");
}
f << stringf("%s" "wire ", indent.c_str());
if (wire->width != 1)
f << stringf("width %d ", wire->width);
if (wire->upto)
f << stringf("upto ");
if (wire->start_offset != 0)
f << stringf("offset %d ", wire->start_offset);
if (wire->port_input && !wire->port_output)
f << stringf("input %d ", wire->port_id);
if (!wire->port_input && wire->port_output)
f << stringf("output %d ", wire->port_id);
if (wire->port_input && wire->port_output)
f << stringf("inout %d ", wire->port_id);
if (wire->is_signed)
f << stringf("signed ");
f << stringf("%s\n", wire->name.c_str());
}
void RTLIL_BACKEND::dump_memory(std::ostream &f, std::string indent, const RTLIL::Memory *memory)
{
for (auto &it : memory->attributes) {
f << stringf("%s" "attribute %s ", indent.c_str(), it.first.c_str());
dump_const(f, it.second);
f << stringf("\n");
}
f << stringf("%s" "memory ", indent.c_str());
if (memory->width != 1)
f << stringf("width %d ", memory->width);
if (memory->size != 0)
f << stringf("size %d ", memory->size);
if (memory->start_offset != 0)
f << stringf("offset %d ", memory->start_offset);
f << stringf("%s\n", memory->name.c_str());
}
void RTLIL_BACKEND::dump_cell(std::ostream &f, std::string indent, const RTLIL::Cell *cell)
{
for (auto &it : cell->attributes) {
f << stringf("%s" "attribute %s ", indent.c_str(), it.first.c_str());
dump_const(f, it.second);
f << stringf("\n");
}
f << stringf("%s" "cell %s %s\n", indent.c_str(), cell->type.c_str(), cell->name.c_str());
for (auto &it : cell->parameters) {
f << stringf("%s parameter%s%s %s ", indent.c_str(),
(it.second.flags & RTLIL::CONST_FLAG_SIGNED) != 0 ? " signed" : "",
(it.second.flags & RTLIL::CONST_FLAG_REAL) != 0 ? " real" : "",
it.first.c_str());
dump_const(f, it.second);
f << stringf("\n");
}
for (auto &it : cell->connections()) {
f << stringf("%s connect %s ", indent.c_str(), it.first.c_str());
dump_sigspec(f, it.second);
f << stringf("\n");
}
f << stringf("%s" "end\n", indent.c_str());
}
void RTLIL_BACKEND::dump_proc_case_body(std::ostream &f, std::string indent, const RTLIL::CaseRule *cs)
{
for (auto it = cs->actions.begin(); it != cs->actions.end(); ++it)
{
f << stringf("%s" "assign ", indent.c_str());
dump_sigspec(f, it->first);
f << stringf(" ");
dump_sigspec(f, it->second);
f << stringf("\n");
}
for (auto it = cs->switches.begin(); it != cs->switches.end(); ++it)
dump_proc_switch(f, indent, *it);
}
void RTLIL_BACKEND::dump_proc_switch(std::ostream &f, std::string indent, const RTLIL::SwitchRule *sw)
{
for (auto it = sw->attributes.begin(); it != sw->attributes.end(); ++it) {
f << stringf("%s" "attribute %s ", indent.c_str(), it->first.c_str());
dump_const(f, it->second);
f << stringf("\n");
}
f << stringf("%s" "switch ", indent.c_str());
dump_sigspec(f, sw->signal);
f << stringf("\n");
for (auto it = sw->cases.begin(); it != sw->cases.end(); ++it)
{
for (auto ait = (*it)->attributes.begin(); ait != (*it)->attributes.end(); ++ait) {
f << stringf("%s attribute %s ", indent.c_str(), ait->first.c_str());
dump_const(f, ait->second);
f << stringf("\n");
}
f << stringf("%s case ", indent.c_str());
for (size_t i = 0; i < (*it)->compare.size(); i++) {
if (i > 0)
f << stringf(" , ");
dump_sigspec(f, (*it)->compare[i]);
}
f << stringf("\n");
dump_proc_case_body(f, indent + " ", *it);
}
f << stringf("%s" "end\n", indent.c_str());
}
void RTLIL_BACKEND::dump_proc_sync(std::ostream &f, std::string indent, const RTLIL::SyncRule *sy)
{
f << stringf("%s" "sync ", indent.c_str());
switch (sy->type) {
case RTLIL::ST0: f << stringf("low ");
if (0) case RTLIL::ST1: f << stringf("high ");
if (0) case RTLIL::STp: f << stringf("posedge ");
if (0) case RTLIL::STn: f << stringf("negedge ");
if (0) case RTLIL::STe: f << stringf("edge ");
dump_sigspec(f, sy->signal);
f << stringf("\n");
break;
case RTLIL::STa: f << stringf("always\n"); break;
case RTLIL::STg: f << stringf("global\n"); break;
case RTLIL::STi: f << stringf("init\n"); break;
}
for (auto it = sy->actions.begin(); it != sy->actions.end(); ++it) {
f << stringf("%s update ", indent.c_str());
dump_sigspec(f, it->first);
f << stringf(" ");
dump_sigspec(f, it->second);
f << stringf("\n");
}
}
void RTLIL_BACKEND::dump_proc(std::ostream &f, std::string indent, const RTLIL::Process *proc)
{
for (auto it = proc->attributes.begin(); it != proc->attributes.end(); ++it) {
f << stringf("%s" "attribute %s ", indent.c_str(), it->first.c_str());
dump_const(f, it->second);
f << stringf("\n");
}
f << stringf("%s" "process %s\n", indent.c_str(), proc->name.c_str());
dump_proc_case_body(f, indent + " ", &proc->root_case);
for (auto it = proc->syncs.begin(); it != proc->syncs.end(); ++it)
dump_proc_sync(f, indent + " ", *it);
f << stringf("%s" "end\n", indent.c_str());
}
void RTLIL_BACKEND::dump_conn(std::ostream &f, std::string indent, const RTLIL::SigSpec &left, const RTLIL::SigSpec &right)
{
f << stringf("%s" "connect ", indent.c_str());
dump_sigspec(f, left);
f << stringf(" ");
dump_sigspec(f, right);
f << stringf("\n");
}
void RTLIL_BACKEND::dump_module(std::ostream &f, std::string indent, RTLIL::Module *module, RTLIL::Design *design, bool only_selected, bool flag_m, bool flag_n)
{
bool print_header = flag_m || design->selected_whole_module(module->name);
bool print_body = !flag_n || !design->selected_whole_module(module->name);
if (print_header)
{
for (auto it = module->attributes.begin(); it != module->attributes.end(); ++it) {
f << stringf("%s" "attribute %s ", indent.c_str(), it->first.c_str());
dump_const(f, it->second);
f << stringf("\n");
}
f << stringf("%s" "module %s\n", indent.c_str(), module->name.c_str());
if (!module->avail_parameters.empty()) {
if (only_selected)
f << stringf("\n");
for (const auto &p : module->avail_parameters) {
const auto &it = module->parameter_default_values.find(p);
if (it == module->parameter_default_values.end()) {
f << stringf("%s" " parameter %s\n", indent.c_str(), p.c_str());
} else {
f << stringf("%s" " parameter %s ", indent.c_str(), p.c_str());
dump_const(f, it->second);
f << stringf("\n");
}
}
}
}
if (print_body)
{
for (auto it : module->wires())
if (!only_selected || design->selected(module, it)) {
if (only_selected)
f << stringf("\n");
dump_wire(f, indent + " ", it);
}
for (auto it : module->memories)
if (!only_selected || design->selected(module, it.second)) {
if (only_selected)
f << stringf("\n");
dump_memory(f, indent + " ", it.second);
}
for (auto it : module->cells())
if (!only_selected || design->selected(module, it)) {
if (only_selected)
f << stringf("\n");
dump_cell(f, indent + " ", it);
}
for (auto it : module->processes)
if (!only_selected || design->selected(module, it.second)) {
if (only_selected)
f << stringf("\n");
dump_proc(f, indent + " ", it.second);
}
bool first_conn_line = true;
for (auto it = module->connections().begin(); it != module->connections().end(); ++it) {
bool show_conn = !only_selected;
if (only_selected) {
RTLIL::SigSpec sigs = it->first;
sigs.append(it->second);
for (auto &c : sigs.chunks()) {
if (c.wire == NULL || !design->selected(module, c.wire))
continue;
show_conn = true;
}
}
if (show_conn) {
if (only_selected && first_conn_line)
f << stringf("\n");
dump_conn(f, indent + " ", it->first, it->second);
first_conn_line = false;
}
}
}
if (print_header)
f << stringf("%s" "end\n", indent.c_str());
}
void RTLIL_BACKEND::dump_design(std::ostream &f, RTLIL::Design *design, bool only_selected, bool flag_m, bool flag_n)
{
int init_autoidx = autoidx;
if (!flag_m) {
int count_selected_mods = 0;
for (auto module : design->modules()) {
if (design->selected_whole_module(module->name))
flag_m = true;
if (design->selected(module))
count_selected_mods++;
}
if (count_selected_mods > 1)
flag_m = true;
}
if (!only_selected || flag_m) {
if (only_selected)
f << stringf("\n");
f << stringf("autoidx %d\n", autoidx);
}
for (auto module : design->modules()) {
if (!only_selected || design->selected(module)) {
if (only_selected)
f << stringf("\n");
dump_module(f, "", module, design, only_selected, flag_m, flag_n);
}
}
log_assert(init_autoidx == autoidx);
}
YOSYS_NAMESPACE_END
PRIVATE_NAMESPACE_BEGIN
struct RTLILBackend : public Backend {
RTLILBackend() : Backend("rtlil", "write design to RTLIL file") { }
void help() override
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" write_rtlil [filename]\n");
log("\n");
log("Write the current design to an RTLIL file. (RTLIL is a text representation\n");
log("of a design in yosys's internal format.)\n");
log("\n");
log(" -selected\n");
log(" only write selected parts of the design.\n");
log("\n");
}
void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design) override
{
bool selected = false;
log_header(design, "Executing RTLIL backend.\n");
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++) {
std::string arg = args[argidx];
if (arg == "-selected") {
selected = true;
continue;
}
break;
}
extra_args(f, filename, args, argidx);
design->sort();
log("Output filename: %s\n", filename.c_str());
*f << stringf("# Generated by %s\n", yosys_version_str);
RTLIL_BACKEND::dump_design(*f, design, selected, true, false);
}
} RTLILBackend;
struct IlangBackend : public Backend {
IlangBackend() : Backend("ilang", "(deprecated) alias of write_rtlil") { }
void help() override
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log("See `help write_rtlil`.\n");
log("\n");
}
void execute(std::ostream *&f, std::string filename, std::vector<std::string> args, RTLIL::Design *design) override
{
RTLILBackend.execute(f, filename, args, design);
}
} IlangBackend;
struct DumpPass : public Pass {
DumpPass() : Pass("dump", "print parts of the design in RTLIL format") { }
void help() override
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" dump [options] [selection]\n");
log("\n");
log("Write the selected parts of the design to the console or specified file in\n");
log("RTLIL format.\n");
log("\n");
log(" -m\n");
log(" also dump the module headers, even if only parts of a single\n");
log(" module is selected\n");
log("\n");
log(" -n\n");
log(" only dump the module headers if the entire module is selected\n");
log("\n");
log(" -o <filename>\n");
log(" write to the specified file.\n");
log("\n");
log(" -a <filename>\n");
log(" like -outfile but append instead of overwrite\n");
log("\n");
}
void execute(std::vector<std::string> args, RTLIL::Design *design) override
{
std::string filename;
bool flag_m = false, flag_n = false, append = false;
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++)
{
std::string arg = args[argidx];
if ((arg == "-o" || arg == "-outfile") && argidx+1 < args.size()) {
filename = args[++argidx];
append = false;
continue;
}
if ((arg == "-a" || arg == "-append") && argidx+1 < args.size()) {
filename = args[++argidx];
append = true;
continue;
}
if (arg == "-m") {
flag_m = true;
continue;
}
if (arg == "-n") {
flag_n = true;
continue;
}
break;
}
extra_args(args, argidx, design);
std::ostream *f;
std::stringstream buf;
if (!filename.empty()) {
rewrite_filename(filename);
std::ofstream *ff = new std::ofstream;
ff->open(filename.c_str(), append ? std::ofstream::app : std::ofstream::trunc);
if (ff->fail()) {
delete ff;
log_error("Can't open file `%s' for writing: %s\n", filename.c_str(), strerror(errno));
}
f = ff;
} else {
f = &buf;
}
RTLIL_BACKEND::dump_design(*f, design, true, flag_m, flag_n);
if (!filename.empty()) {
delete f;
} else {
log("%s", buf.str().c_str());
}
}
} DumpPass;
PRIVATE_NAMESPACE_END
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