Encode large (>32 bits) parameters as hex string in edif backend

diff --git a/backends/edif/edif.cc b/backends/edif/edif.cc
index 8bf2bbc2e4bbab9d6e18f6b232c01b946c7859f1..944e576a5b18df3605df0ea507b40c1edfc7b37d 100644 (file)
--- a/backends/edif/edif.cc
+++ b/backends/edif/edif.cc
@@ -216,10 +216,23 @@ struct EdifBackend : public Backend {
                                fprintf(f, "            (viewRef VIEW_NETLIST (cellRef %s%s))", EDIF_NAME(cell->type),
                                                lib_cell_ports.count(cell->type) > 0 ? " (libraryRef LIB)" : "");
                                for (auto &p : cell->parameters)
-                                       if (p.second.bits.size() <= 32 && RTLIL::SigSpec(p.second).is_fully_def())
+                                       if (!p.second.str.empty())
+                                               fprintf(f, "\n            (property %s (string \"%s\"))", EDIF_NAME(p.first), p.second.str.c_str());
+                                       else if (p.second.bits.size() <= 32 && RTLIL::SigSpec(p.second).is_fully_def())
                                                fprintf(f, "\n            (property %s (integer %u))", EDIF_NAME(p.first), p.second.as_int());
-                                       else
-                                               fprintf(f, "\n            (property %s FIXME)", EDIF_NAME(p.first));
+                                       else {
+                                               std::string hex_string = "";
+                                               for (size_t i = 0; i < p.second.bits.size(); i += 4) {
+                                                       int digit_value = 0;
+                                                       if (i+0 < p.second.bits.size() && p.second.bits.at(i+0) == RTLIL::State::S1) digit_value += 1;
+                                                       if (i+1 < p.second.bits.size() && p.second.bits.at(i+1) == RTLIL::State::S1) digit_value += 2;
+                                                       if (i+2 < p.second.bits.size() && p.second.bits.at(i+2) == RTLIL::State::S1) digit_value += 3;
+                                                       if (i+3 < p.second.bits.size() && p.second.bits.at(i+3) == RTLIL::State::S1) digit_value += 4;
+                                                       char digit_str[2] = { "0123456789abcdef"[digit_value], 0 };
+                                                       hex_string = std::string(digit_str) + hex_string;
+                                               }
+                                               fprintf(f, "\n            (property %s (string \"%s\"))", EDIF_NAME(p.first), hex_string.c_str());
+                                       }
                                fprintf(f, ")\n");
                                for (auto &p : cell->connections) {
                                        RTLIL::SigSpec sig = sigmap(p.second);