usr/src/sys/tahoe/align/Aregister.c

/*-
 * Copyright (c) 1986 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Computer Consoles Inc.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. 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 BY THE REGENTS 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 REGENTS 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.
 *
 *      @(#)Aregister.c 7.1 (Berkeley) 12/6/90
 */

#include "align.h"

/*
 * Return the specified register from the big structure.
 */

long
Register (infop, number)
process_info    *infop;
long            number;
{

        switch (number) {
                case 0: return (r0);
                case 1: return (r1);
                case 2: return (r2);
                case 3: return (r3);
                case 4: return (r4);
                case 5: return (r5);
                case 6: return (r6);
                case 7: return (r7);
                case 8: return (r8);
                case 9: return (r9);
                case 10:        return (r10);
                case 11:        return (r11);
                case 12:        return (r12);
                case 13:        return (fp);
                case 14:        return (sp);
                case 15:        return (pc);
        }
}


/*
 * Replace a given register with the given value.
 */
Replace (infop,number, newvalue)
process_info    *infop;
long            number;
long            newvalue;
{

        switch (number) {
                case 0: r0 = newvalue; return;
                case 1: r1 = newvalue; return;
                case 2: r2 = newvalue; return;
                case 3: r3 = newvalue; return;
                case 4: r4 = newvalue; return;
                case 5: r5 = newvalue; return;
                case 6: r6 = newvalue; return;
                case 7: r7 = newvalue; return;
                case 8: r8 = newvalue; return;
                case 9: r9 = newvalue; return;
                case 10:        r10 = newvalue; return;
                case 11:        r11 = newvalue; return;
                case 12:        r12 = newvalue; return;
                case 13:        fp = newvalue; return;
                case 14:        sp = newvalue & ~3; return;
                case 15:        pc = newvalue; return;
        }
}