system/freebsd-src
system/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src synced 2024-10-05 16:10:55 +00:00
Code Issues Packages Projects Releases Wiki Activity

Sync with sys/i386/i386/microtime.s revision 1.40.

Browse source
This commit is contained in:
KATO Takenori 1998-01-02 09:31:16 +00:00
parent 6f34dba98a
commit f27e599a9c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=32179
1 changed files with 17 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
sys/pc98/i386/microtime.s
View file

@ -32,7 +32,7 @@
* SUCH DAMAGE.
*
* from: Steve McCanne's microtime code
* $Id: microtime.s,v 1.21 1997/12/28 08:16:28 kato Exp $
* $Id: microtime.s,v 1.22 1997/12/29 16:17:09 kato Exp $
*/
#include <machine/asmacros.h>
@ -60,9 +60,22 @@ ENTRY(microtime)
subl _tsc_bias, %eax
mull _tsc_multiplier
movl %edx, %eax
addl _time+4, %eax /* usec += time.tv_sec */
movl _time, %edx /* sec = time.tv_sec */
popfl /* restore interrupt mask */
jmp common_microtime
cmpl $1000000, %eax /* usec valid? */
jb 1f
subl $1000000, %eax /* adjust usec */
incl %edx /* bump sec */
1:
movl 4(%esp), %ecx /* load timeval pointer arg */
movl %edx, (%ecx) /* tvp->tv_sec = sec */
movl %eax, 4(%ecx) /* tvp->tv_usec = usec */
ret
ALIGN_TEXT
i8254_microtime:
movb $TIMER_SEL0|TIMER_LATCH, %al /* prepare to latch */
@ -275,13 +288,12 @@ overflow:
popl %edx
popl %eax
#endif /* USE_CLOCKLOCK */
popfl /* restore interrupt mask */
common_microtime:
addl _time+4, %eax /* usec += time.tv_sec */
movl _time, %edx /* sec = time.tv_sec */
popfl /* restore interrupt mask */
cmpl $1000000, %eax /* usec valid? */
jb 1f
subl $1000000, %eax /* adjust usec */