1*23254Smckusick /* 2*23254Smckusick * Copyright (c) 1982 Regents of the University of California. 3*23254Smckusick * All rights reserved. The Berkeley software License Agreement 4*23254Smckusick * specifies the terms and conditions for redistribution. 5*23254Smckusick * 6*23254Smckusick * @(#)clock.h 6.2 (Berkeley) 06/08/85 7*23254Smckusick */ 851Sbill 951Sbill /* 1051Sbill * VAX clock registers 1151Sbill */ 1251Sbill 132633Swnj #define ICCS_RUN 0x00000001 142633Swnj #define ICCS_TRANS 0x00000010 152633Swnj #define ICCS_SS 0x00000020 162633Swnj #define ICCS_IE 0x00000040 172633Swnj #define ICCS_INT 0x00000080 1851Sbill #define ICCS_ERR 0x80000000 1951Sbill 20880Sbill #define SECDAY ((unsigned)(24*60*60)) /* seconds per day */ 21880Sbill #define SECYR ((unsigned)(365*SECDAY)) /* per common year */ 22880Sbill /* 23880Sbill * TODRZERO is the what the TODR should contain when the ``year'' begins. 24880Sbill * The TODR should always contain a number between 0 and SECYR+SECDAY. 25880Sbill */ 26880Sbill #define TODRZERO ((unsigned)(1<<28)) 2751Sbill 28880Sbill #define YRREF 1970 292307Swnj #define LEAPYEAR(year) ((year)%4==0) /* good till time becomes negative */ 30880Sbill 31880Sbill /* 328987Sroot * Has the time-of-day clock wrapped around? 33880Sbill */ 34880Sbill #define clkwrap() (((unsigned)mfpr(TODR) - TODRZERO)/100 > SECYR+SECDAY) 352447Swnj 362447Swnj /* 378050Sroot * Software clock is software interrupt level 8, 388050Sroot * implemented as mtpr(SIRR, 0x8) in asm.sed. 392447Swnj */ 40