mirror of
https://github.com/YosysHQ/yosys
synced 2025-10-20 14:20:32 +00:00
9465b2af95
Uses the regex below to search (using vscode):
^\t\tlog\("(.{10,}(?<!\\n)|.{81,}\\n)"\);
Finds any log messages double indented (which help messages are)
and checks if *either* there are is no newline character at the end,
*or* the number of characters before the newline is more than 80.
106 lines
3 KiB
C++
106 lines
3 KiB
C++
/*
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* yosys -- Yosys Open SYnthesis Suite
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*
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* Copyright (C) 2020 Marcelina Kościelnicka <mwk@0x04.net>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#include "kernel/yosys.h"
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#include "kernel/sigtools.h"
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#include "kernel/ff.h"
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USING_YOSYS_NAMESPACE
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PRIVATE_NAMESPACE_BEGIN
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struct DffunmapPass : public Pass {
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DffunmapPass() : Pass("dffunmap", "unmap clock enable and synchronous reset from FFs") { }
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void help() override
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{
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// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
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log("\n");
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log(" dffunmap [options] [selection]\n");
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log("\n");
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log("This pass transforms FF types with clock enable and/or synchronous reset into\n");
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log("their base type (with neither clock enable nor sync reset) by emulating the\n");
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log("clock enable and synchronous reset with multiplexers on the cell input.\n");
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log("\n");
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log(" -ce-only\n");
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log(" unmap only clock enables, leave synchronous resets alone.\n");
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log("\n");
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log(" -srst-only\n");
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log(" unmap only synchronous resets, leave clock enables alone.\n");
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log("\n");
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}
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void execute(std::vector<std::string> args, RTLIL::Design *design) override
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{
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log_header(design, "Executing DFFUNMAP pass (unmap clock enable and synchronous reset from FFs).\n");
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bool ce_only = false;
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bool srst_only = false;
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size_t argidx;
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for (argidx = 1; argidx < args.size(); argidx++) {
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if (args[argidx] == "-ce-only") {
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ce_only = true;
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continue;
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}
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if (args[argidx] == "-srst-only") {
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srst_only = true;
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continue;
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}
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break;
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}
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extra_args(args, argidx, design);
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if (ce_only && srst_only)
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log_cmd_error("Options -ce-only and -srst-only are mutually exclusive!\n");
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for (auto mod : design->selected_modules())
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{
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SigMap sigmap(mod);
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FfInitVals initvals(&sigmap, mod);
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for (auto cell : mod->selected_cells())
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{
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if (!RTLIL::builtin_ff_cell_types().count(cell->type))
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continue;
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FfData ff(&initvals, cell);
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IdString name = cell->name;
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if (!ff.has_clk)
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continue;
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if (ce_only) {
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if (!ff.has_ce)
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continue;
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ff.unmap_ce();
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} else if (srst_only) {
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if (!ff.has_srst)
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continue;
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ff.unmap_srst();
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} else {
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if (!ff.has_ce && !ff.has_srst)
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continue;
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ff.unmap_ce_srst();
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}
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ff.emit();
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}
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}
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}
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} DffunmapPass;
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PRIVATE_NAMESPACE_END
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