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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.
*
*/
#include "kernel/yosys.h"
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
struct EquivStatusPass : public Pass {
EquivStatusPass() : Pass("equiv_status", "print status of equivalent checking module") { }
virtual void help()
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" equiv_status [options] [selection]\n");
log("\n");
log("This command prints status information for all selected $equiv cells.\n");
log("\n");
log(" -assert\n");
log(" produce an error if any unproven $equiv cell is found\n");
log("\n");
}
virtual void execute(std::vector<std::string> args, Design *design)
{
bool assert_mode = false;
int unproven_count = 0;
log_header(design, "Executing EQUIV_STATUS pass.\n");
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++) {
if (args[argidx] == "-assert") {
assert_mode = true;
continue;
}
break;
}
extra_args(args, argidx, design);
for (auto module : design->selected_modules())
{
vector<Cell*> unproven_equiv_cells;
int proven_equiv_cells = 0;
for (auto cell : module->selected_cells())
if (cell->type == "$equiv") {
if (cell->getPort("\\A") != cell->getPort("\\B"))
unproven_equiv_cells.push_back(cell);
else
proven_equiv_cells++;
}
if (unproven_equiv_cells.empty() && !proven_equiv_cells) {
log("No $equiv cells found in %s.\n", log_id(module));
continue;
}
log("Found %d $equiv cells in %s:\n", GetSize(unproven_equiv_cells) + proven_equiv_cells, log_id(module));
log(" Of those cells %d are proven and %d are unproven.\n", proven_equiv_cells, GetSize(unproven_equiv_cells));
if (unproven_equiv_cells.empty()) {
log(" Equivalence successfully proven!\n");
} else {
for (auto cell : unproven_equiv_cells)
log(" Unproven $equiv %s: %s %s\n", log_id(cell), log_signal(cell->getPort("\\A")), log_signal(cell->getPort("\\B")));
}
unproven_count += GetSize(unproven_equiv_cells);
}
if (unproven_count != 0) {
log("Found a total of %d unproven $equiv cells.\n", unproven_count);
if (assert_mode && unproven_count != 0)
log_error("Found %d unproven $equiv cells in 'equiv_status -assert'.\n", unproven_count);
}
}
} EquivStatusPass;
PRIVATE_NAMESPACE_END
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