usr/src/sys/hpstand/machdep.c

/*
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department.
 *
 * Redistribution is only permitted until one year after the first shipment
 * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
 * binary forms are permitted provided that: (1) source distributions retain
 * this entire copyright notice and comment, and (2) distributions including
 * binaries display the following acknowledgement:  This product includes
 * software developed by the University of California, Berkeley and its
 * contributors'' in the documentation or other materials provided with the
 * distribution and in all advertising materials mentioning features or use
 * of this software.  Neither the name of the University nor the names of
 * its contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * from: Utah $Hdr: machdep.c 1.6 88/05/24$
 *
 *      @(#)machdep.c   7.1 (Berkeley) 5/8/90
 */

#include "param.h"

/*
 * Copy bytes within kernel
 */
bcopy(from, to, count)
        register caddr_t from, to;
        register unsigned count;
{
        while (count--)
                *to++ = *from++;
}

bzero(to, count)
        register caddr_t to;
        register unsigned count;
{
        while (count--)
                *to++ = 0;
}

bcmp(s1, s2, len)
        register char *s1, *s2;
        register int len;
{
        while (len--)
                if (*s1++ != *s2++)
                        return (1);
        return (0);
}

trap(fp)
 struct frame {
         int dregs[8];
         int aregs[8];
         int whoknows;
         short sr;
         int pc;
         short frame;
 } *fp;
{
        static int intrap = 0;

        if (intrap)
                return;
        intrap = 1;
        romprintf("Got unexpected trap, vector = %x, ps = %x, pc = %x\n",
               fp->frame&0xFFF, fp->sr, fp->pc);
        romprintf("dregs: %x %x %x %x %x %x %x %x\n",
               fp->dregs[0], fp->dregs[1], fp->dregs[2], fp->dregs[3],
               fp->dregs[4], fp->dregs[5], fp->dregs[6], fp->dregs[7]);
        romprintf("aregs: %x %x %x %x %x %x %x %x\n",
               fp->aregs[0], fp->aregs[1], fp->aregs[2], fp->aregs[3],
               fp->aregs[4], fp->aregs[5], fp->aregs[6], fp->aregs[7]);
        intrap = 0;
}

nodev()
{
        return(0);
}

#ifdef ROMPRF
#define ROWS    46
#define COLS    128

romputchar(c)
 register int c;
{
        static char buf[COLS];
        static int col = 0, row = 0;
        register int i;

        switch (c) {
        case '\0':
                break;
        case '\r':
        case '\n':
                for (i = col; i < COLS-1; i++)
                        buf[i] = ' ';
                buf[i] = '\0';
                romout(row, buf);
                col = 0;
                if (++row == ROWS)
                        row = 0;
                break;

        case '\t':
                do {
                        romputchar(' ');
                } while (col & 7);
                break;

        default:
                buf[col] = c;
                if (++col == COLS-1)
                        romputchar('\n');
                break;
        }
}
#endif