/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/param.h>
#include <assert.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "acpidump.h"

int     dflag;  /* Disassemble AML using iasl(8) */
int     tflag;  /* Dump contents of SDT tables */
int     vflag;  /* Use verbose messages */

static void
usage(const char *progname)
{

        fprintf(stderr, "usage: %s [-d] [-t] [-h] [-v] [-f dsdt_input] "
                        "[-o dsdt_output] [-T table_name]\n", progname);
        fprintf(stderr, "To send ASL:\n\t%s -dt | gzip -c9 > foo.asl.gz\n",
            progname);
        exit(1);
}

int
main(int argc, char *argv[])
{
        ACPI_TABLE_HEADER *rsdt, *sdt;
        int     c;
        char    *progname;
        char    *dsdt_input_file, *dsdt_output_file;
        char    *tbl = NULL;

        dsdt_input_file = dsdt_output_file = NULL;
        progname = argv[0];

        if (argc < 2)
                usage(progname);

        while ((c = getopt(argc, argv, "df:ho:tT:vs")) != -1) {
                switch (c) {
                case 'd':
                        dflag = 1;
                        break;
                case 'T':
                        tbl = optarg;
                        if (strlen(tbl) != 4) {
                                warnx("Illegal table name %s", tbl);
                                usage(progname);
                        }
                        break;
                case 't':
                        tflag = 1;
                        break;
                case 'v':
                        vflag = 1;
                        break;
                case 'f':
                        dsdt_input_file = optarg;
                        break;
                case 'o':
                        dsdt_output_file = optarg;
                        break;
                case 's':
                        dflag = 2;
                        break;
                case 'h':
                default:
                        usage(progname);
                        /* NOTREACHED */
                }
        }
        argc -= optind;
        argv += optind;

        /* Get input either from file or /dev/mem */
        if (dsdt_input_file != NULL) {
                if (dflag == 0 && tflag == 0) {
                        warnx("Need to specify -d or -t with DSDT input file");
                        usage(progname);
                } else if (tflag != 0) {
                        warnx("Can't use -t with DSDT input file");
                        usage(progname);
                }
                if (vflag)
                        warnx("loading DSDT file: %s", dsdt_input_file);
                rsdt = dsdt_load_file(dsdt_input_file);
        } else {
                if (vflag)
                        warnx("loading RSD PTR from /dev/mem");
                rsdt = sdt_load_devmem();
        }

        /* Display misc. SDT tables (only available when using /dev/mem) */
        if (tflag || tbl != NULL) {
                if (vflag)
                        warnx("printing various SDT tables");
                sdt_print_all(rsdt, tbl);
        }

        /* Translate RSDT to DSDT pointer */
        if (dsdt_input_file == NULL) {
                sdt = sdt_from_rsdt(rsdt, ACPI_SIG_FADT, NULL);
                sdt = dsdt_from_fadt((ACPI_TABLE_FADT *)sdt);
        } else {
                sdt = rsdt;
                rsdt = NULL;
        }

        /* Dump the DSDT and SSDTs to a file */
        if (dsdt_output_file != NULL) {
                if (vflag)
                        warnx("saving DSDT file: %s", dsdt_output_file);
                dsdt_save_file(dsdt_output_file, rsdt, sdt);
        }

        /* Disassemble the DSDT into ASL */
        if (dflag) {
                if (vflag)
                        warnx("disassembling DSDT, iasl messages follow");
                if (dflag == 1) {
                        aml_disassemble(rsdt, sdt);
                } else {
                        aml_disassemble_separate(rsdt, sdt);
                }
                if (vflag)
                        warnx("iasl processing complete");
        }

        exit(0);
}