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Moved delay2us to param.h (now an inline function).

This commit is contained in:
gwr 1995-06-13 22:16:38 +00:00
parent cd13e583aa
commit b029c12ac1
1 changed files with 9 additions and 35 deletions
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44
sys/arch/sun3/sun3/locore.s
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@ -1,4 +1,4 @@
/* $NetBSD: locore.s,v 1.30 1995/06/02 16:46:18 gwr Exp $ */
/* $NetBSD: locore.s,v 1.31 1995/06/13 22:16:38 gwr Exp $ */
/*
* Copyright (c) 1994, 1995 Gordon W. Ross
@ -1364,22 +1364,16 @@ Lm68881rdone:
frestore a0@ | restore state
rts
| These two routines depend on the variable "cpuspeed"
| which should be set to the CPU clock rate in MHz.
| XXX - Currently this is set in sun3_startup.c based on the
| CPU model but this should be determined at run time...
.data
.even
.globl _cpuspeed
_cpuspeed:
.long 20 | assume 20 MHz (Sun3/60)
.text
| delay(int usecs)
| Delay for "usec" microseconds. Minimum delay is about 5 uS.
.even
.globl _delay
_delay: |
|
| This routine depends on the variable "cpuspeed"
| which should be set based on the CPU clock rate.
| XXX - Currently this is set in sun3_startup.c based on the
| CPU model but this should be determined at run time...
|
.globl _delay
_delay:
| d0 = (cpuspeed * usecs)
movel _cpuspeed,d0
mulsl sp@(4),d0
@ -1392,26 +1386,6 @@ Ldelay:
jgt Ldelay
rts
.text
| delay2us()
| Delay for at least 2.2 uS. (for the ZS driver).
| This actually takes about 2.4 uS. Just right.
| XXX - Need to make this work for any cpuspeed.
.even
.globl _delay2us
_delay2us:
movel _cpuspeed,d0
moveq #16,d1
subl d1,d0 | d0=cpuspeed-16
jle Lrts
subql #4,d0 | d0=cpuspeed-20
jle Lrts
subql #5,d0 | d0=cpuspeed-25
jle Lrts
subql #5,d0 | d0=cpuspeed-30
nop ; nop
Lrts: rts
| Define some addresses, mostly so DDB can print useful info.
.globl _kernbase