Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix register allocation in microtime().

Browse Source
This commit is contained in:
eeh 2002-02-07 22:23:01 +00:00
parent 35a343b018
commit d3d818a6f4
1 changed files with 9 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
sys/arch/sparc64/sparc64/locore.s
View File

@ -1,4 +1,4 @@
/* $NetBSD: locore.s,v 1.145 2002/01/29 01:15:50 eeh Exp $ */
/* $NetBSD: locore.s,v 1.146 2002/02/07 22:23:01 eeh Exp $ */
/*
* Copyright (c) 1996-2001 Eduardo Horvath
@ -9275,7 +9275,7 @@ ENTRY(pseg_find)
.data
.align 8
.globl block_disable
block_disable: .xword 0
block_disable: .xword 1
.text
#if 0
@ -12106,19 +12106,19 @@ microtick:
bne 2b ! if time.tv_usec changed
sethi %hi(_C_LABEL(cpu_clockrate)), %o1
ldx [%o1 + %lo(_C_LABEL(cpu_clockrate) + 8)], %o4 ! Get scale factor
ldx [%o1 + %lo(_C_LABEL(cpu_clockrate) + 8)], %g1 ! Get scale factor
sethi %hi(MICROPERSEC), %o5
brnz,pt %o4, 1f ! Already scaled?
or %o2, %lo(MICROPERSEC), %o5
brnz,pt %g1, 1f ! Already scaled?
or %o5, %lo(MICROPERSEC), %o5
!! Calculate ticks/usec
ldx [%o1 + %lo(_C_LABEL(cpu_clockrate))], %o4 ! No, we need to calculate it
udivx %o4, %o5, %o4 ! Hz / 10^6 = MHz
stx %o4, [%o1 + %lo(_C_LABEL(cpu_clockrate) + 8)] ! Save it so we don't need to divide again
ldx [%o1 + %lo(_C_LABEL(cpu_clockrate))], %g1 ! No, we need to calculate it
udivx %g1, %o5, %g1 ! Hz / 10^6 = MHz
stx %g1, [%o1 + %lo(_C_LABEL(cpu_clockrate) + 8)] ! Save it so we don't need to divide again
1:
STPTR %o2, [%o0] ! Store seconds.
udivx %o4, %o1, %o4 ! Scale it: ticks / MHz = usec
udivx %o4, %g1, %o4 ! Scale it: ticks / MHz = usec
udivx %o4, %o5, %o2 ! Now %o2 has seconds