Return to machparam.h CVS log

Up to [CSRG BSD Unix] / 43BSD / sys / vax

Annotation of 43BSD/sys/vax/machparam.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)machparam.h 7.1 (Berkeley) 6/5/86
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * Machine dependent constants for vax.
        !            11:  */
        !            12: #define        NBPG    512             /* bytes/page */
        !            13: #define        PGOFSET (NBPG-1)        /* byte offset into page */
        !            14: #define        PGSHIFT 9               /* LOG2(NBPG) */
        !            15: 
        !            16: #define        CLSIZE          2
        !            17: #define        CLSIZELOG2      1
        !            18: 
        !            19: #define        SSIZE   4               /* initial stack size/NBPG */
        !            20: #define        SINCR   4               /* increment of stack/NBPG */
        !            21: 
        !            22: #define        UPAGES  10              /* pages of u-area */
        !            23: 
        !            24: /*
        !            25:  * Some macros for units conversion
        !            26:  */
        !            27: /* Core clicks (512 bytes) to segments and vice versa */
        !            28: #define        ctos(x) (x)
        !            29: #define        stoc(x) (x)
        !            30: 
        !            31: /* Core clicks (512 bytes) to disk blocks */
        !            32: #define        ctod(x) (x)
        !            33: #define        dtoc(x) (x)
        !            34: #define        dtob(x) ((x)<<9)
        !            35: 
        !            36: /* clicks to bytes */
        !            37: #define        ctob(x) ((x)<<9)
        !            38: 
        !            39: /* bytes to clicks */
        !            40: #define        btoc(x) ((((unsigned)(x)+511)>>9))
        !            41: 
        !            42: /*
        !            43:  * Macros to decode processor status word.
        !            44:  */
        !            45: #define        USERMODE(ps)    (((ps) & PSL_CURMOD) == PSL_CURMOD)
        !            46: #define        BASEPRI(ps)     (((ps) & PSL_IPL) == 0)
        !            47: 
        !            48: #ifdef KERNEL
        !            49: #ifndef LOCORE
        !            50: int    cpuspeed;
        !            51: #endif
        !            52: #define        DELAY(n)        { register int N = cpuspeed * (n); while (--N > 0); }
        !            53: 
        !            54: #else KERNEL
        !            55: #define        DELAY(n)        { register int N = (n); while (--N > 0); }
        !            56: #endif KERNEL

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.