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Annotation of prex-old/usr/test/ioport/ioport.c, Revision 1.1

1.1     ! nbrk        1: /*-
        !             2:  * Copyright (c) 2005, Kohsuke Ohtani
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. Neither the name of the author nor the names of any co-contributors
        !            14:  *    may be used to endorse or promote products derived from this software
        !            15:  *    without specific prior written permission.
        !            16:  *
        !            17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
        !            18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
        !            21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            27:  * SUCH DAMAGE.
        !            28:  */
        !            29:
        !            30: /*
        !            31:  * ioport.c - test program for direct I/O access on i386 pc.
        !            32:  */
        !            33:
        !            34: /*
        !            35:  * Note: Currently, the direct I/O access is not allowed on Prex because
        !            36:  * of the security concern.
        !            37:  */
        !            38:
        !            39: #include <sys/cdefs.h>
        !            40: #include <prex/prex.h>
        !            41: #include <stdio.h>
        !            42: #include "ioport.h"
        !            43:
        !            44: int
        !            45: main(int argc, char *argv[])
        !            46: {
        !            47:        int port;
        !            48:        u_char val;
        !            49:
        !            50:        printf("User mode I/O test program\n");
        !            51:
        !            52:        /* XXX: Get the I/O permission from kernel. */
        !            53:
        !            54:
        !            55:        for (port = 0; port < 0xff; port++) {
        !            56:                /* Cause GP fault! */
        !            57:                val = inb(port);
        !            58:                printf("Port 0x%x=%x\n", port, val);
        !            59:        }
        !            60:        return 0;
        !            61: }