vhdl2verilog.cc

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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/register.h"
#include "kernel/sigtools.h"
#include "kernel/log.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <limits.h>

#ifndef _WIN32
#  include <unistd.h>
#  include <dirent.h>
#endif

YOSYS_NAMESPACE_BEGIN

struct Vhdl2verilogPass : public Pass {
    Vhdl2verilogPass() : Pass("vhdl2verilog", "importing VHDL designs using vhdl2verilog") { }
    virtual void help()
    {
        //   |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
        log("\n");
        log("    vhdl2verilog [options] <vhdl-file>..\n");
        log("\n");
        log("This command reads VHDL source files using the 'vhdl2verilog' tool and the\n");
        log("Yosys Verilog frontend.\n");
        log("\n");
        log("    -out <out_file>\n");
        log("        do not import the vhdl2verilog output. instead write it to the\n");
        log("        specified file.\n");
        log("\n");
        log("    -vhdl2verilog_dir <directory>\n");
        log("        do use the specified vhdl2verilog installation. this is the directory\n");
        log("        that contains the setup_env.sh file. when this option is not present,\n");
        log("        it is assumed that vhdl2verilog is in the PATH environment variable.\n");
        log("\n");
        log("    -top <top-entity-name>\n");
        log("        The name of the top entity. This option is mandatory.\n");
        log("\n");
        log("The following options are passed as-is to vhdl2verilog:\n");
        log("\n");
        log("    -arch <architecture_name>\n");
        log("    -unroll_generate\n");
        log("    -nogenericeval\n");
        log("    -nouniquify\n");
        log("    -oldparser\n");
        log("    -suppress <list>\n");
        log("    -quiet\n");
        log("    -nobanner\n");
        log("    -mapfile <file>\n");
        log("\n");
        log("vhdl2verilog can be obtained from:\n");
        log("http://www.edautils.com/vhdl2verilog.html\n");
        log("\n");
    }
    virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
    {
        log_header("Executing VHDL2VERILOG (importing VHDL designs using vhdl2verilog).\n");
        log_push();

        std::string out_file, top_entity;
        std::string vhdl2verilog_dir;
        std::string extra_opts;

        size_t argidx;
        for (argidx = 1; argidx < args.size(); argidx++) {
            if (args[argidx] == "-out" && argidx+1 < args.size()) {
                out_file = args[++argidx];
                continue;
            }
            if (args[argidx] == "-top" && argidx+1 < args.size()) {
                top_entity = args[++argidx];
                continue;
            }
            if (args[argidx] == "-vhdl2verilog_dir" && argidx+1 < args.size()) {
                vhdl2verilog_dir = args[++argidx];
                continue;
            }
            if ((args[argidx] == "-arch" || args[argidx] == "-suppress" || args[argidx] == "-mapfile") && argidx+1 < args.size()) {
                if (args[argidx] == "-mapfile" && !args[argidx+1].empty() && args[argidx+1][0] != '/') {
                    char pwd[PATH_MAX];
                    if (!getcwd(pwd, sizeof(pwd))) {
                        log_cmd_error("getcwd failed: %s", strerror(errno));
                        log_abort();
                    }
                    args[argidx+1] = pwd + ("/" + args[argidx+1]);
                }
                extra_opts += std::string(" ") + args[argidx];
                extra_opts += std::string(" '") + args[++argidx] + std::string("'");
                continue;
            }
            if (args[argidx] == "-unroll_generate" || args[argidx] == "-nogenericeval" || args[argidx] == "-nouniquify" ||
                    args[argidx] == "-oldparser" || args[argidx] == "-quiet" || args[argidx] == "-nobanner") {
                extra_opts += std::string(" ") + args[argidx];
                continue;
            }
            break;
        }

        if (argidx == args.size())
            cmd_error(args, argidx, "Missing filenames.");
        if (args[argidx].substr(0, 1) == "-")
            cmd_error(args, argidx, "Unknown option.");
        if (top_entity.empty())
            log_cmd_error("Missing -top option.\n");

        std::string tempdir_name = make_temp_dir("/tmp/yosys-vhdl2verilog-XXXXXX");
        log("Using temp directory %s.\n", tempdir_name.c_str());

        if (!out_file.empty() && out_file[0] != '/') {
            char pwd[PATH_MAX];
            if (!getcwd(pwd, sizeof(pwd))) {
                log_cmd_error("getcwd failed: %s", strerror(errno));
                log_abort();
            }
            out_file = pwd + ("/" + out_file);
        }

        FILE *f = fopen(stringf("%s/files.list", tempdir_name.c_str()).c_str(), "wt");
        while (argidx < args.size()) {
            std::string file = args[argidx++];
            if (file.empty())
                continue;
            if (file[0] != '/') {
                char pwd[PATH_MAX];
                if (!getcwd(pwd, sizeof(pwd))) {
                    log_cmd_error("getcwd failed: %s", strerror(errno));
                    log_abort();
                }
                file = pwd + ("/" + file);
            }
            fprintf(f, "%s\n", file.c_str());
            log("Adding '%s' to the file list.\n", file.c_str());
        }
        fclose(f);

        std::string command = "exec 2>&1; ";
        if (!vhdl2verilog_dir.empty())
            command += stringf("cd '%s'; . ./setup_env.sh; ", vhdl2verilog_dir.c_str());
        command += stringf("cd '%s'; vhdl2verilog -out '%s' -filelist files.list -top '%s'%s", tempdir_name.c_str(),
                out_file.empty() ? "vhdl2verilog_output.v" : out_file.c_str(), top_entity.c_str(), extra_opts.c_str());

        log("Running '%s'..\n", command.c_str());

        int ret = run_command(command, [](const std::string &line) { log("%s", line.c_str()); });
        if (ret != 0)
            log_error("Execution of command \"%s\" failed: return code %d.\n", command.c_str(), ret);

        if (out_file.empty()) {
            std::ifstream ff;
            ff.open(stringf("%s/vhdl2verilog_output.v", tempdir_name.c_str()).c_str());
            if (ff.fail())
                log_error("Can't open vhdl2verilog output file `vhdl2verilog_output.v'.\n");
            Frontend::frontend_call(design, &ff, stringf("%s/vhdl2verilog_output.v", tempdir_name.c_str()), "verilog");
        }

        log_header("Removing temp directory `%s':\n", tempdir_name.c_str());
        remove_directory(tempdir_name);
        log_pop();
    }
} Vhdl2verilogPass;
 
YOSYS_NAMESPACE_END