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Annotation of 43BSDReno/sys/hpstand/machdep.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 University of Utah.
        !             3:  * Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
        !             4:  * All rights reserved.
        !             5:  *
        !             6:  * This code is derived from software contributed to Berkeley by
        !             7:  * the Systems Programming Group of the University of Utah Computer
        !             8:  * Science Department.
        !             9:  *
        !            10:  * Redistribution is only permitted until one year after the first shipment
        !            11:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
        !            12:  * binary forms are permitted provided that: (1) source distributions retain
        !            13:  * this entire copyright notice and comment, and (2) distributions including
        !            14:  * binaries display the following acknowledgement:  This product includes
        !            15:  * software developed by the University of California, Berkeley and its
        !            16:  * contributors'' in the documentation or other materials provided with the
        !            17:  * distribution and in all advertising materials mentioning features or use
        !            18:  * of this software.  Neither the name of the University nor the names of
        !            19:  * its contributors may be used to endorse or promote products derived from
        !            20:  * this software without specific prior written permission.
        !            21:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            22:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            23:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            24:  *
        !            25:  * from: Utah $Hdr: machdep.c 1.6 88/05/24$
        !            26:  *
        !            27:  *     @(#)machdep.c   7.1 (Berkeley) 5/8/90
        !            28:  */
        !            29: 
        !            30: #include "param.h"
        !            31: 
        !            32: /*
        !            33:  * Copy bytes within kernel
        !            34:  */
        !            35: bcopy(from, to, count)
        !            36:        register caddr_t from, to;
        !            37:        register unsigned count;
        !            38: {
        !            39:        while (count--)
        !            40:                *to++ = *from++;
        !            41: }
        !            42: 
        !            43: bzero(to, count)
        !            44:        register caddr_t to;
        !            45:        register unsigned count;
        !            46: {
        !            47:        while (count--)
        !            48:                *to++ = 0;
        !            49: }
        !            50: 
        !            51: bcmp(s1, s2, len)
        !            52:        register char *s1, *s2;
        !            53:        register int len;
        !            54: {
        !            55:        while (len--)
        !            56:                if (*s1++ != *s2++)
        !            57:                        return (1);
        !            58:        return (0);
        !            59: }
        !            60: 
        !            61: trap(fp)
        !            62:  struct frame {
        !            63:         int dregs[8];
        !            64:         int aregs[8];
        !            65:         int whoknows;
        !            66:         short sr;
        !            67:         int pc;
        !            68:         short frame;
        !            69:  } *fp;
        !            70: {
        !            71:        static int intrap = 0;
        !            72: 
        !            73:        if (intrap)
        !            74:                return;
        !            75:        intrap = 1;
        !            76:        romprintf("Got unexpected trap, vector = %x, ps = %x, pc = %x\n",
        !            77:               fp->frame&0xFFF, fp->sr, fp->pc);
        !            78:        romprintf("dregs: %x %x %x %x %x %x %x %x\n",
        !            79:               fp->dregs[0], fp->dregs[1], fp->dregs[2], fp->dregs[3], 
        !            80:               fp->dregs[4], fp->dregs[5], fp->dregs[6], fp->dregs[7]);
        !            81:        romprintf("aregs: %x %x %x %x %x %x %x %x\n",
        !            82:               fp->aregs[0], fp->aregs[1], fp->aregs[2], fp->aregs[3], 
        !            83:               fp->aregs[4], fp->aregs[5], fp->aregs[6], fp->aregs[7]);
        !            84:        intrap = 0;
        !            85: }
        !            86: 
        !            87: nodev()
        !            88: {
        !            89:        return(0);
        !            90: }
        !            91: 
        !            92: #ifdef ROMPRF
        !            93: #define ROWS   46
        !            94: #define COLS   128
        !            95: 
        !            96: romputchar(c)
        !            97:  register int c;
        !            98: {
        !            99:        static char buf[COLS];
        !           100:        static int col = 0, row = 0;
        !           101:        register int i;
        !           102: 
        !           103:        switch (c) {
        !           104:        case '\0':
        !           105:                break;
        !           106:        case '\r':
        !           107:        case '\n':
        !           108:                for (i = col; i < COLS-1; i++)
        !           109:                        buf[i] = ' ';
        !           110:                buf[i] = '\0';
        !           111:                romout(row, buf);
        !           112:                col = 0;
        !           113:                if (++row == ROWS)
        !           114:                        row = 0;
        !           115:                break;
        !           116: 
        !           117:        case '\t':
        !           118:                do {
        !           119:                        romputchar(' ');
        !           120:                } while (col & 7);
        !           121:                break;
        !           122: 
        !           123:        default:
        !           124:                buf[col] = c;
        !           125:                if (++col == COLS-1)
        !           126:                        romputchar('\n');
        !           127:                break;
        !           128:        }
        !           129: }
        !           130: #endif

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