106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
|
/*
|
||
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that: (1) source code distributions
|
||
|
|
* retain the above copyright notice and this paragraph in its entirety, (2)
|
||
|
|
* distributions including binary code include the above copyright notice and
|
||
|
|
* this paragraph in its entirety in the documentation or other materials
|
||
|
|
* provided with the distribution, and (3) all advertising materials mentioning
|
||
|
|
* features or use of this software display the following acknowledgement:
|
||
|
|
* ``This product includes software developed by the University of California,
|
||
|
|
* Lawrence Berkeley Laboratory and its contributors.'' 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.
|
||
|
|
*
|
||
|
|
* $Id: md.c,v 1.1 1993/11/14 21:20:18 deraadt Exp $
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef lint
|
||
|
|
static char rcsid[] =
|
||
|
|
"@(#) Header: md-hp300.c,v 1.4 90/10/25 15:24:19 mccanne Exp (LBL)";
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int
|
||
|
|
clock_sigfigs()
|
||
|
|
{
|
||
|
|
#ifdef hp300
|
||
|
|
/*
|
||
|
|
* The hp's apparently have a microsecond clock.
|
||
|
|
*/
|
||
|
|
return 6;
|
||
|
|
#endif
|
||
|
|
#ifdef pmax
|
||
|
|
/*
|
||
|
|
* On DEC RISC machines, timestamps to about 4 msec so we pretend
|
||
|
|
* it is 1 msec. Future kernel hacking could improve it.
|
||
|
|
*/
|
||
|
|
return 3;
|
||
|
|
#endif
|
||
|
|
#ifdef ibmrt
|
||
|
|
return 3;
|
||
|
|
#endif
|
||
|
|
#ifdef sun3
|
||
|
|
/* Stock Sun 3's have clocks accurate to 20 ms. */
|
||
|
|
return 2;
|
||
|
|
#endif
|
||
|
|
#ifdef sparc
|
||
|
|
/* The sun includes are arranged too stupidly to help us */
|
||
|
|
|
||
|
|
#define ARCH_MASK 0xf0000000
|
||
|
|
#define MACH_MASK 0x0f000000
|
||
|
|
#define ARCH_MACH_MASK (ARCH_MASK + MACH_MASK)
|
||
|
|
|
||
|
|
#define ARCH_SUN4 0x20000000
|
||
|
|
#define ARCH_SUN4C 0x50000000
|
||
|
|
#define MACH_60 0x01000000 /* Sparcstation 1 */
|
||
|
|
|
||
|
|
#define MACH_4_330 (ARCH_SUN4 + 0x03000000)
|
||
|
|
#define MACH_4_460 (ARCH_SUN4 + 0x04000000)
|
||
|
|
|
||
|
|
#define MACH_260 0x01000000
|
||
|
|
#define MACH_110 0x02000000
|
||
|
|
#define MACH_330 0x03000000
|
||
|
|
#define MACH_460 0x04000000
|
||
|
|
|
||
|
|
int good = 0;
|
||
|
|
long id = gethostid();
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Apparently, all sun4c's, 4/300's, and 4/400's have the
|
||
|
|
* Mostek 48T02 clock chip.
|
||
|
|
*/
|
||
|
|
if ((id & ARCH_MASK) == ARCH_SUN4C)
|
||
|
|
++good;
|
||
|
|
else
|
||
|
|
switch (id & ARCH_MACH_MASK) {
|
||
|
|
|
||
|
|
case MACH_4_330:
|
||
|
|
case MACH_4_460:
|
||
|
|
++good;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
/* On machines with "good" clocks, timestamps to microseconds.
|
||
|
|
Default is hundreths of a second. */
|
||
|
|
|
||
|
|
if (good)
|
||
|
|
return 6;
|
||
|
|
else
|
||
|
|
return 2;
|
||
|
|
#endif
|
||
|
|
#ifdef vax
|
||
|
|
/*
|
||
|
|
* Vaxen appear to have clocks accurate to 1 us,
|
||
|
|
* but packetfilter is timestamping to 10 ms.
|
||
|
|
*/
|
||
|
|
return 2;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
}
|
||
|
|
|