diff options
Diffstat (limited to 'passes')
| -rw-r--r-- | passes/fsm/fsm.cc | 10 | ||||
| -rw-r--r-- | passes/fsm/fsm_recode.cc | 43 |
2 files changed, 41 insertions, 12 deletions
diff --git a/passes/fsm/fsm.cc b/passes/fsm/fsm.cc index 1e7c7772..e76be40c 100644 --- a/passes/fsm/fsm.cc +++ b/passes/fsm/fsm.cc @@ -61,6 +61,7 @@ struct FsmPass : public Pass { log("\n"); log(" -encoding tye\n"); log(" -fm_set_fsm_file file\n"); + log(" -encfile file\n"); log(" passed through to fsm_recode pass\n"); log("\n"); } @@ -72,6 +73,7 @@ struct FsmPass : public Pass { bool flag_expand = false; bool flag_export = false; std::string fm_set_fsm_file_opt; + std::string encfile_opt; std::string encoding_opt; log_header("Executing FSM pass (extract and optimize FSM).\n"); @@ -84,7 +86,11 @@ struct FsmPass : public Pass { fm_set_fsm_file_opt = " -fm_set_fsm_file " + args[++argidx]; continue; } - if (arg == "-encoding" && argidx+1 < args.size() && fm_set_fsm_file_opt.empty()) { + if (arg == "-encfile" && argidx+1 < args.size() && encfile_opt.empty()) { + encfile_opt = " -encfile " + args[++argidx]; + continue; + } + if (arg == "-encoding" && argidx+1 < args.size() && encoding_opt.empty()) { encoding_opt = " -encoding " + args[++argidx]; continue; } @@ -127,7 +133,7 @@ struct FsmPass : public Pass { } if (!flag_norecode) - Pass::call(design, "fsm_recode" + fm_set_fsm_file_opt + encoding_opt); + Pass::call(design, "fsm_recode" + fm_set_fsm_file_opt + encfile_opt + encoding_opt); Pass::call(design, "fsm_info"); if (flag_export) diff --git a/passes/fsm/fsm_recode.cc b/passes/fsm/fsm_recode.cc index 06ac58f0..16996810 100644 --- a/passes/fsm/fsm_recode.cc +++ b/passes/fsm/fsm_recode.cc @@ -51,7 +51,7 @@ static void fm_set_fsm_print(RTLIL::Cell *cell, RTLIL::Module *module, FsmData & prefix, RTLIL::unescape_id(module->name).c_str()); } -static void fsm_recode(RTLIL::Cell *cell, RTLIL::Module *module, FILE *fm_set_fsm_file, std::string default_encoding) +static void fsm_recode(RTLIL::Cell *cell, RTLIL::Module *module, FILE *fm_set_fsm_file, FILE *encfile, std::string default_encoding) { std::string encoding = cell->attributes.count("\\fsm_encoding") ? cell->attributes.at("\\fsm_encoding").decode_string() : "auto"; @@ -94,6 +94,9 @@ static void fsm_recode(RTLIL::Cell *cell, RTLIL::Module *module, FILE *fm_set_fs } else log_error("FSM encoding `%s' is not supported!\n", encoding.c_str()); + if (encfile) + fprintf(encfile, ".fsm %s %s\n", log_id(module), RTLIL::unescape_id(cell->parameters["\\NAME"].decode_string()).c_str()); + int state_idx_counter = fsm_data.reset_state >= 0 ? 1 : 0; for (int i = 0; i < int(fsm_data.state_table.size()); i++) { @@ -110,6 +113,8 @@ static void fsm_recode(RTLIL::Cell *cell, RTLIL::Module *module, FILE *fm_set_fs log_abort(); log(" %s -> %s\n", fsm_data.state_table[i].as_string().c_str(), new_code.as_string().c_str()); + if (encfile) + fprintf(encfile, ".map %s %s\n", fsm_data.state_table[i].as_string().c_str(), new_code.as_string().c_str()); fsm_data.state_table[i] = new_code; } @@ -125,21 +130,31 @@ struct FsmRecodePass : public Pass { { // |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---| log("\n"); - log(" fsm_recode [-encoding type] [-fm_set_fsm_file file] [selection]\n"); + log(" fsm_recode [options] [selection]\n"); log("\n"); log("This pass reassign the state encodings for FSM cells. At the moment only\n"); - log("one-hot encoding and binary encoding is supported. The option -encoding\n"); - log("can be used to specify the encoding scheme used for FSMs without the\n"); - log("`fsm_encoding' attribute (or with the attribute set to `auto'.\n"); + log("one-hot encoding and binary encoding is supported.\n"); + + log(" -encoding <type>\n"); + log(" specify the encoding scheme used for FSMs without the\n"); + log(" 'fsm_encoding' attribute or with the attribute set to `auto'.\n"); + log("\n"); + log(" -fm_set_fsm_file <file>\n"); + log(" generate a file containing the mapping from old to new FSM encoding\n"); + log(" in form of Synopsys Formality set_fsm_* commands.\n"); + log("\n"); + log(" -encfile <file>\n"); + log(" write the mappings from old to new FSM encoding to a file in the\n"); + log(" following format:\n"); log("\n"); - log("The option -fm_set_fsm_file can be used to generate a file containing the\n"); - log("mapping from old to new FSM encoding in form of Synopsys Formality set_fsm_*\n"); - log("commands.\n"); + log(" .fsm <module_name> <state_signal>\n"); + log(" .map <old_bitpattern> <new_bitpattern>\n"); log("\n"); } virtual void execute(std::vector<std::string> args, RTLIL::Design *design) { FILE *fm_set_fsm_file = NULL; + FILE *encfile = NULL; std::string default_encoding; log_header("Executing FSM_RECODE pass (re-assigning FSM state encoding).\n"); @@ -152,7 +167,13 @@ struct FsmRecodePass : public Pass { log_error("Can't open fm_set_fsm_file `%s' for writing: %s\n", args[argidx].c_str(), strerror(errno)); continue; } - if (arg == "-encoding" && argidx+1 < args.size() && fm_set_fsm_file == NULL) { + if (arg == "-encfile" && argidx+1 < args.size() && encfile == NULL) { + encfile = fopen(args[++argidx].c_str(), "w"); + if (encfile == NULL) + log_error("Can't open encfile `%s' for writing: %s\n", args[argidx].c_str(), strerror(errno)); + continue; + } + if (arg == "-encoding" && argidx+1 < args.size() && default_encoding.empty()) { default_encoding = args[++argidx]; continue; } @@ -164,10 +185,12 @@ struct FsmRecodePass : public Pass { if (design->selected(mod_it.second)) for (auto &cell_it : mod_it.second->cells_) if (cell_it.second->type == "$fsm" && design->selected(mod_it.second, cell_it.second)) - fsm_recode(cell_it.second, mod_it.second, fm_set_fsm_file, default_encoding); + fsm_recode(cell_it.second, mod_it.second, fm_set_fsm_file, encfile, default_encoding); if (fm_set_fsm_file != NULL) fclose(fm_set_fsm_file); + if (encfile != NULL) + fclose(encfile); } } FsmRecodePass; |