Remove some unnecessary #includes.
Restore the simple leap year calculation as a macro and document it so that it doesn't become complicated again. The simple version works for all leap years covered by 32-bit time_t's. The complicated version doesn't work for all leap years covered by 64-bit time_t's since among other reasons, the solar system is not stable for long enough. Fix declarations. Nuke spinwait().
This commit is contained in:
bde
parent
a15bf9b145
commit
11781e43fd
@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)clock.c 7.2 (Berkeley) 5/12/91
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* $Id: clock.c,v 1.17 1994/09/14 23:09:06 ache Exp $
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* $Id: clock.c,v 1.18 1994/09/18 20:39:42 wollman Exp $
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*/
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/*
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@ -44,13 +44,17 @@
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#include <sys/systm.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <machine/segments.h>
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#include <machine/frame.h>
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#include <i386/isa/icu.h>
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#include <i386/isa/isa.h>
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#include <i386/isa/rtc.h>
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#include <i386/isa/timerreg.h>
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#include <machine/cpu.h>
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/*
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* 32-bit time_t's can't reach leap years before 1904 or after 2036, so we
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* can use a simple formula for leap years.
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*/
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#define LEAPYEAR(y) ((u_int)(y) % 4 == 0)
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/* X-tals being what they are, it's nice to be able to fudge this one... */
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/* Note, the name changed here from XTALSPEED to TIMER_FREQ rgrimes 4/26/93 */
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@ -58,9 +62,8 @@
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#define TIMER_FREQ 1193182 /* XXX - should be in isa.h */
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#endif
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#define TIMER_DIV(x) ((TIMER_FREQ+(x)/2)/(x))
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#define LEAPYEAR(y) (!((y)%4) && ((y)%100) || !((y)%400))
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static int beeping;
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static int beeping;
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int timer0_divisor = TIMER_DIV(100); /* XXX should be hz */
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u_int timer0_prescale;
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int adjkerntz = 0; /* offset from CMOS clock */
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@ -258,7 +261,7 @@ calibrate_cyclecounter(void)
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void
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DELAY(int n)
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{
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int counter_limit, prev_tick, tick, ticks_left, sec, usec;
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int prev_tick, tick, ticks_left, sec, usec;
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#ifdef DELAYDEBUG
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int getit_calls = 1;
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@ -314,7 +317,8 @@ DELAY(int n)
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static void
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sysbeepstop()
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sysbeepstop(chan)
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void *chan;
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{
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outb(IO_PPI, inb(IO_PPI)&0xFC); /* disable counter2 output to speaker */
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release_timer2();
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@ -335,7 +339,7 @@ sysbeep(int pitch, int period)
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if (!beeping) {
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outb(IO_PPI, inb(IO_PPI) | 3); /* enable counter2 output to speaker */
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beeping = period;
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timeout(sysbeepstop, 0, period);
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timeout(sysbeepstop, (void *)NULL, period);
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}
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return 0;
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}
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@ -489,16 +493,6 @@ enablertclock()
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outb(IO_RTC+1, RTCSB_PINTR | RTCSB_24HR);
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}
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/*
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* Delay for some number of milliseconds.
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*/
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void
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spinwait(int millisecs)
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{
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DELAY(1000 * millisecs);
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}
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void
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cpu_initclocks()
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{
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)clock.c 7.2 (Berkeley) 5/12/91
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* $Id: clock.c,v 1.17 1994/09/14 23:09:06 ache Exp $
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* $Id: clock.c,v 1.18 1994/09/18 20:39:42 wollman Exp $
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*/
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/*
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@ -44,13 +44,17 @@
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#include <sys/systm.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <machine/segments.h>
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#include <machine/frame.h>
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#include <i386/isa/icu.h>
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#include <i386/isa/isa.h>
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#include <i386/isa/rtc.h>
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#include <i386/isa/timerreg.h>
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#include <machine/cpu.h>
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/*
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* 32-bit time_t's can't reach leap years before 1904 or after 2036, so we
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* can use a simple formula for leap years.
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*/
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#define LEAPYEAR(y) ((u_int)(y) % 4 == 0)
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/* X-tals being what they are, it's nice to be able to fudge this one... */
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/* Note, the name changed here from XTALSPEED to TIMER_FREQ rgrimes 4/26/93 */
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@ -58,9 +62,8 @@
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#define TIMER_FREQ 1193182 /* XXX - should be in isa.h */
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#endif
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#define TIMER_DIV(x) ((TIMER_FREQ+(x)/2)/(x))
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#define LEAPYEAR(y) (!((y)%4) && ((y)%100) || !((y)%400))
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static int beeping;
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static int beeping;
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int timer0_divisor = TIMER_DIV(100); /* XXX should be hz */
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u_int timer0_prescale;
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int adjkerntz = 0; /* offset from CMOS clock */
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@ -258,7 +261,7 @@ calibrate_cyclecounter(void)
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void
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DELAY(int n)
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{
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int counter_limit, prev_tick, tick, ticks_left, sec, usec;
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int prev_tick, tick, ticks_left, sec, usec;
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#ifdef DELAYDEBUG
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int getit_calls = 1;
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@ -314,7 +317,8 @@ DELAY(int n)
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static void
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sysbeepstop()
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sysbeepstop(chan)
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void *chan;
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{
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outb(IO_PPI, inb(IO_PPI)&0xFC); /* disable counter2 output to speaker */
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release_timer2();
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@ -335,7 +339,7 @@ sysbeep(int pitch, int period)
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if (!beeping) {
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outb(IO_PPI, inb(IO_PPI) | 3); /* enable counter2 output to speaker */
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beeping = period;
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timeout(sysbeepstop, 0, period);
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timeout(sysbeepstop, (void *)NULL, period);
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}
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return 0;
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}
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@ -489,16 +493,6 @@ enablertclock()
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outb(IO_RTC+1, RTCSB_PINTR | RTCSB_24HR);
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}
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/*
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* Delay for some number of milliseconds.
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*/
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void
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spinwait(int millisecs)
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{
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DELAY(1000 * millisecs);
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}
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void
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cpu_initclocks()
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{
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)icu.h 5.6 (Berkeley) 5/9/91
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* $Id: icu.h,v 1.3 1994/04/02 07:00:40 davidg Exp $
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* $Id: icu.h,v 1.4 1994/09/16 13:33:38 davidg Exp $
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*/
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/*
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@ -42,8 +42,8 @@
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* W. Jolitz 8/89
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*/
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#ifndef __ICU__
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#define __ICU__
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#ifndef _I386_ISA_ICU_H_
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#define _I386_ISA_ICU_H_
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#ifndef LOCORE
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@ -52,17 +52,17 @@
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*/
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extern unsigned imen; /* interrupt mask enable */
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#define INTREN(s) {imen &= ~(s); SET_ICUS()}
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#define INTRDIS(s) {imen |= (s); SET_ICUS()}
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#define INTREN(s) (imen &= ~(s), SET_ICUS())
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#define INTRDIS(s) (imen |= (s), SET_ICUS())
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#define INTRMASK(msk,s) (msk |= (s))
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#if 0
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#define SET_ICUS() {outb(IO_ICU1 + 1, imen); outb(IU_ICU2 + 1, imen >> 8);}
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#define SET_ICUS() (outb(IO_ICU1 + 1, imen), outb(IU_ICU2 + 1, imen >> 8))
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#else
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/*
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* XXX - IO_ICU* are defined in isa.h, not icu.h, and nothing much bothers to
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* include isa.h, while too many things include icu.h.
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*/
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#define SET_ICUS() {outb(0x21, imen); outb(0xa1, imen >> 8);}
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#define SET_ICUS() (outb(0x21, imen), outb(0xa1, imen >> 8))
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#endif
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#endif
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@ -94,4 +94,4 @@ extern unsigned imen; /* interrupt mask enable */
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#define ICU_OFFSET 32 /* 0-31 are processor exceptions */
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#define ICU_LEN 16 /* 32-47 are ISA interrupts */
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#endif __ICU__
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#endif /* !_I386_ISA_ICU_H_ */
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)clock.c 7.2 (Berkeley) 5/12/91
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* $Id: clock.c,v 1.17 1994/09/14 23:09:06 ache Exp $
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* $Id: clock.c,v 1.18 1994/09/18 20:39:42 wollman Exp $
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*/
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/*
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@ -44,13 +44,17 @@
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#include <sys/systm.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <machine/segments.h>
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#include <machine/frame.h>
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#include <i386/isa/icu.h>
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#include <i386/isa/isa.h>
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#include <i386/isa/rtc.h>
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#include <i386/isa/timerreg.h>
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#include <machine/cpu.h>
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/*
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* 32-bit time_t's can't reach leap years before 1904 or after 2036, so we
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* can use a simple formula for leap years.
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*/
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#define LEAPYEAR(y) ((u_int)(y) % 4 == 0)
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/* X-tals being what they are, it's nice to be able to fudge this one... */
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/* Note, the name changed here from XTALSPEED to TIMER_FREQ rgrimes 4/26/93 */
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@ -58,9 +62,8 @@
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#define TIMER_FREQ 1193182 /* XXX - should be in isa.h */
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#endif
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#define TIMER_DIV(x) ((TIMER_FREQ+(x)/2)/(x))
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#define LEAPYEAR(y) (!((y)%4) && ((y)%100) || !((y)%400))
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static int beeping;
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static int beeping;
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int timer0_divisor = TIMER_DIV(100); /* XXX should be hz */
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u_int timer0_prescale;
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int adjkerntz = 0; /* offset from CMOS clock */
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@ -258,7 +261,7 @@ calibrate_cyclecounter(void)
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void
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DELAY(int n)
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{
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int counter_limit, prev_tick, tick, ticks_left, sec, usec;
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int prev_tick, tick, ticks_left, sec, usec;
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#ifdef DELAYDEBUG
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int getit_calls = 1;
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@ -314,7 +317,8 @@ DELAY(int n)
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static void
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sysbeepstop()
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sysbeepstop(chan)
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void *chan;
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{
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outb(IO_PPI, inb(IO_PPI)&0xFC); /* disable counter2 output to speaker */
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release_timer2();
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@ -335,7 +339,7 @@ sysbeep(int pitch, int period)
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if (!beeping) {
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outb(IO_PPI, inb(IO_PPI) | 3); /* enable counter2 output to speaker */
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beeping = period;
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timeout(sysbeepstop, 0, period);
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timeout(sysbeepstop, (void *)NULL, period);
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}
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return 0;
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}
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@ -489,16 +493,6 @@ enablertclock()
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outb(IO_RTC+1, RTCSB_PINTR | RTCSB_24HR);
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}
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/*
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* Delay for some number of milliseconds.
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*/
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void
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spinwait(int millisecs)
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{
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DELAY(1000 * millisecs);
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}
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void
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cpu_initclocks()
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{
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)clock.c 7.2 (Berkeley) 5/12/91
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* $Id: clock.c,v 1.17 1994/09/14 23:09:06 ache Exp $
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* $Id: clock.c,v 1.18 1994/09/18 20:39:42 wollman Exp $
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*/
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/*
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@ -44,13 +44,17 @@
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#include <sys/systm.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <machine/segments.h>
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#include <machine/frame.h>
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#include <i386/isa/icu.h>
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#include <i386/isa/isa.h>
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#include <i386/isa/rtc.h>
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#include <i386/isa/timerreg.h>
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#include <machine/cpu.h>
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/*
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* 32-bit time_t's can't reach leap years before 1904 or after 2036, so we
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* can use a simple formula for leap years.
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*/
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#define LEAPYEAR(y) ((u_int)(y) % 4 == 0)
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/* X-tals being what they are, it's nice to be able to fudge this one... */
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/* Note, the name changed here from XTALSPEED to TIMER_FREQ rgrimes 4/26/93 */
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@ -58,9 +62,8 @@
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#define TIMER_FREQ 1193182 /* XXX - should be in isa.h */
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#endif
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#define TIMER_DIV(x) ((TIMER_FREQ+(x)/2)/(x))
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#define LEAPYEAR(y) (!((y)%4) && ((y)%100) || !((y)%400))
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static int beeping;
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static int beeping;
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int timer0_divisor = TIMER_DIV(100); /* XXX should be hz */
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u_int timer0_prescale;
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int adjkerntz = 0; /* offset from CMOS clock */
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@ -258,7 +261,7 @@ calibrate_cyclecounter(void)
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void
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DELAY(int n)
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{
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int counter_limit, prev_tick, tick, ticks_left, sec, usec;
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int prev_tick, tick, ticks_left, sec, usec;
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#ifdef DELAYDEBUG
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int getit_calls = 1;
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@ -314,7 +317,8 @@ DELAY(int n)
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static void
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sysbeepstop()
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sysbeepstop(chan)
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void *chan;
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{
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outb(IO_PPI, inb(IO_PPI)&0xFC); /* disable counter2 output to speaker */
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release_timer2();
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@ -335,7 +339,7 @@ sysbeep(int pitch, int period)
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if (!beeping) {
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outb(IO_PPI, inb(IO_PPI) | 3); /* enable counter2 output to speaker */
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beeping = period;
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timeout(sysbeepstop, 0, period);
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timeout(sysbeepstop, (void *)NULL, period);
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}
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return 0;
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}
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@ -489,16 +493,6 @@ enablertclock()
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outb(IO_RTC+1, RTCSB_PINTR | RTCSB_24HR);
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}
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/*
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* Delay for some number of milliseconds.
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*/
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void
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spinwait(int millisecs)
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{
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DELAY(1000 * millisecs);
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}
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void
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cpu_initclocks()
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{
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)icu.h 5.6 (Berkeley) 5/9/91
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* $Id: icu.h,v 1.3 1994/04/02 07:00:40 davidg Exp $
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* $Id: icu.h,v 1.4 1994/09/16 13:33:38 davidg Exp $
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*/
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/*
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@ -42,8 +42,8 @@
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* W. Jolitz 8/89
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*/
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#ifndef __ICU__
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#define __ICU__
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#ifndef _I386_ISA_ICU_H_
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#define _I386_ISA_ICU_H_
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#ifndef LOCORE
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@ -52,17 +52,17 @@
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*/
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extern unsigned imen; /* interrupt mask enable */
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#define INTREN(s) {imen &= ~(s); SET_ICUS()}
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#define INTRDIS(s) {imen |= (s); SET_ICUS()}
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#define INTREN(s) (imen &= ~(s), SET_ICUS())
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#define INTRDIS(s) (imen |= (s), SET_ICUS())
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#define INTRMASK(msk,s) (msk |= (s))
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#if 0
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#define SET_ICUS() {outb(IO_ICU1 + 1, imen); outb(IU_ICU2 + 1, imen >> 8);}
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#define SET_ICUS() (outb(IO_ICU1 + 1, imen), outb(IU_ICU2 + 1, imen >> 8))
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#else
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/*
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* XXX - IO_ICU* are defined in isa.h, not icu.h, and nothing much bothers to
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* include isa.h, while too many things include icu.h.
|
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*/
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#define SET_ICUS() {outb(0x21, imen); outb(0xa1, imen >> 8);}
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#define SET_ICUS() (outb(0x21, imen), outb(0xa1, imen >> 8))
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#endif
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#endif
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@ -94,4 +94,4 @@ extern unsigned imen; /* interrupt mask enable */
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#define ICU_OFFSET 32 /* 0-31 are processor exceptions */
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#define ICU_LEN 16 /* 32-47 are ISA interrupts */
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#endif __ICU__
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#endif /* !_I386_ISA_ICU_H_ */
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)clock.c 7.2 (Berkeley) 5/12/91
|
||||
* $Id: clock.c,v 1.17 1994/09/14 23:09:06 ache Exp $
|
||||
* $Id: clock.c,v 1.18 1994/09/18 20:39:42 wollman Exp $
|
||||
*/
|
||||
|
||||
/*
|
||||
@ -44,13 +44,17 @@
|
||||
#include <sys/systm.h>
|
||||
#include <sys/time.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <machine/segments.h>
|
||||
#include <machine/frame.h>
|
||||
#include <i386/isa/icu.h>
|
||||
#include <i386/isa/isa.h>
|
||||
#include <i386/isa/rtc.h>
|
||||
#include <i386/isa/timerreg.h>
|
||||
#include <machine/cpu.h>
|
||||
|
||||
/*
|
||||
* 32-bit time_t's can't reach leap years before 1904 or after 2036, so we
|
||||
* can use a simple formula for leap years.
|
||||
*/
|
||||
#define LEAPYEAR(y) ((u_int)(y) % 4 == 0)
|
||||
|
||||
/* X-tals being what they are, it's nice to be able to fudge this one... */
|
||||
/* Note, the name changed here from XTALSPEED to TIMER_FREQ rgrimes 4/26/93 */
|
||||
@ -58,9 +62,8 @@
|
||||
#define TIMER_FREQ 1193182 /* XXX - should be in isa.h */
|
||||
#endif
|
||||
#define TIMER_DIV(x) ((TIMER_FREQ+(x)/2)/(x))
|
||||
#define LEAPYEAR(y) (!((y)%4) && ((y)%100) || !((y)%400))
|
||||
|
||||
static int beeping;
|
||||
static int beeping;
|
||||
int timer0_divisor = TIMER_DIV(100); /* XXX should be hz */
|
||||
u_int timer0_prescale;
|
||||
int adjkerntz = 0; /* offset from CMOS clock */
|
||||
@ -258,7 +261,7 @@ calibrate_cyclecounter(void)
|
||||
void
|
||||
DELAY(int n)
|
||||
{
|
||||
int counter_limit, prev_tick, tick, ticks_left, sec, usec;
|
||||
int prev_tick, tick, ticks_left, sec, usec;
|
||||
|
||||
#ifdef DELAYDEBUG
|
||||
int getit_calls = 1;
|
||||
@ -314,7 +317,8 @@ DELAY(int n)
|
||||
|
||||
|
||||
static void
|
||||
sysbeepstop()
|
||||
sysbeepstop(chan)
|
||||
void *chan;
|
||||
{
|
||||
outb(IO_PPI, inb(IO_PPI)&0xFC); /* disable counter2 output to speaker */
|
||||
release_timer2();
|
||||
@ -335,7 +339,7 @@ sysbeep(int pitch, int period)
|
||||
if (!beeping) {
|
||||
outb(IO_PPI, inb(IO_PPI) | 3); /* enable counter2 output to speaker */
|
||||
beeping = period;
|
||||
timeout(sysbeepstop, 0, period);
|
||||
timeout(sysbeepstop, (void *)NULL, period);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
@ -489,16 +493,6 @@ enablertclock()
|
||||
outb(IO_RTC+1, RTCSB_PINTR | RTCSB_24HR);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Delay for some number of milliseconds.
|
||||
*/
|
||||
void
|
||||
spinwait(int millisecs)
|
||||
{
|
||||
DELAY(1000 * millisecs);
|
||||
}
|
||||
|
||||
void
|
||||
cpu_initclocks()
|
||||
{
|
||||
|
||||
Loading…
Reference in New Issue
Block a user