Merge branch 'master' of https://github.com/cliffordwolf/yosys into btor

added case for memwr cell that is used in muxes (same cell is used more than one time)
corrected bug for xnor and logic_not
added pmux cell translation

Conflicts:
	backends/btor/btor.cc

1 files changed, 144 insertions, 0 deletions

diff --git a/passes/cmds/cover.cc b/passes/cmds/cover.cc
new file mode 100644
index 000000000..ac72ba53a
--- /dev/null
+++ b/passes/cmds/cover.cc
@@ -0,0 +1,144 @@
+/*
+ *  yosys -- Yosys Open SYnthesis Suite
+ *
+ *  Copyright (C) 2014  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 <sys/types.h>
+#include <unistd.h>
+#include <fnmatch.h>
+
+#include "kernel/register.h"
+#include "kernel/rtlil.h"
+#include "kernel/log.h"
+
+struct CoverPass : public Pass {
+	CoverPass() : Pass("cover", "print code coverage counters") { }
+	virtual void help()
+	{
+		//   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
+		log("\n");
+		log("    cover [options] [pattern]\n");
+		log("\n");
+		log("Print the code coverage counters collected using the cover() macro in the Yosys\n");
+		log("C++ code. This is useful to figure out what parts of Yosys are utilized by a\n");
+		log("test bench.\n");
+		log("\n");
+		log("    -q\n");
+		log("        Do not print output to the normal destination (console and/or log file)\n");
+		log("\n");
+		log("    -o file\n");
+		log("        Write output to this file, truncate if exists.\n");
+		log("\n");
+		log("    -a file\n");
+		log("        Write output to this file, append if exists.\n");
+		log("\n");
+		log("    -d dir\n");
+		log("        Write output to a newly created file in the specified directory.\n");
+		log("\n");
+		log("When one or more pattern (shell wildcards) are specified, then only counters\n");
+		log("matching at least one pattern are printed.\n");
+		log("\n");
+		log("\n");
+		log("It is also possible to instruct Yosys to print the coverage counters on program\n");
+		log("exit to a file using environment variables:\n");
+		log("\n");
+		log("    YOSYS_COVER_DIR=\"{dir-name}\" yosys {args}\n");
+		log("\n");
+		log("        This will create a file (with an auto-generated name) in this\n");
+		log("        directory and write the coverage counters to it.\n");
+		log("\n");
+		log("    YOSYS_COVER_FILE=\"{file-name}\" yosys {args}\n");
+		log("\n");
+		log("        This will append the coverage counters to the specified file.\n");
+		log("\n");
+		log("\n");
+		log("Hint: Use the following AWK command to consolidate Yosys coverage files:\n");
+		log("\n");
+		log("    gawk '{ p[$3] = $1; c[$3] += $2; } END { for (i in p)\n");
+		log("      printf \"%%-60s %%10d %%s\\n\", p[i], c[i], i; }' {files} | sort -k3\n");
+		log("\n");
+		log("\n");
+		log("Coverage counters are only available in debug builds of Yosys for Linux.\n");
+		log("\n");
+	}
+	virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
+	{
+		std::vector<FILE*> out_files;
+		std::vector<std::string> patterns;
+		bool do_log = true;
+
+		size_t argidx;
+		for (argidx = 1; argidx < args.size(); argidx++)
+		{
+			if (args[argidx] == "-q") {
+				do_log = false;
+				continue;
+			}
+			if ((args[argidx] == "-o" || args[argidx] == "-a" || args[argidx] == "-d") && argidx+1 < args.size()) {
+				const char *open_mode = args[argidx] == "-a" ? "a+" : "w";
+				std::string filename = args[++argidx];
+				if (args[argidx-1] == "-d") {
+					char filename_buffer[4096];
+					snprintf(filename_buffer, 4096, "%s/yosys_cover_%d_XXXXXX.txt", filename.c_str(), getpid());
+					filename = mkstemps(filename_buffer, 4);
+				}
+				FILE *f = fopen(filename.c_str(), open_mode);
+				if (f == NULL) {
+					for (auto f : out_files)
+						fclose(f);
+					log_cmd_error("Can't create file %s.\n", args[argidx].c_str());
+				}
+				out_files.push_back(f);
+				continue;
+			}
+			break;
+		}
+		while (argidx < args.size() && args[argidx].substr(0, 1) != "-")
+			patterns.push_back(args[argidx++]);
+		extra_args(args, argidx, design);
+
+		if (do_log) {
+			log_header("Printing code coverage counters.\n");
+			log("\n");
+		}
+
+#ifdef COVER_ACTIVE
+		for (auto &it : get_coverage_data()) {
+			if (!patterns.empty()) {
+				for (auto &p : patterns)
+					if (!fnmatch(p.c_str(), it.first.c_str(), 0))
+						goto pattern_match;
+				continue;
+			}
+		pattern_match:
+			for (auto f : out_files)
+				fprintf(f, "%-60s %10d %s\n", it.second.first.c_str(), it.second.second, it.first.c_str());
+			if (do_log)
+				log("%-60s %10d %s\n", it.second.first.c_str(), it.second.second, it.first.c_str());
+		}
+#else
+		for (auto f : out_files)
+			fclose(f);
+
+		log_cmd_error("Coverage counters are only available in debug builds of Yosys for Linux.\n");
+#endif
+
+		for (auto f : out_files)
+			fclose(f);
+	}
+} CoverPass;
+