diff options
| -rw-r--r-- | sys/i386/i386/microtime.s | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/i386/i386/microtime.s b/sys/i386/i386/microtime.s index 884a809..7e7bafa 100644 --- a/sys/i386/i386/microtime.s +++ b/sys/i386/i386/microtime.s @@ -32,7 +32,7 @@ * SUCH DAMAGE. * * from: Steve McCanne's microtime code - * $Id: microtime.s,v 1.12 1995/12/24 08:10:43 davidg Exp $ + * $Id: microtime.s,v 1.13 1996/05/31 01:08:02 peter Exp $ */ #include <machine/asmacros.h> @@ -54,6 +54,7 @@ ENTRY(microtime) movb $TIMER_SEL0|TIMER_LATCH, %al /* prepare to latch */ + pushfl cli /* disable interrupts */ outb %al, $TIMER_MODE /* latch timer 0's counter */ @@ -168,7 +169,7 @@ common_microtime: addl _time+4, %eax /* usec += time.tv_sec */ movl _time, %edx /* sec = time.tv_sec */ - sti /* enable interrupts */ + popfl /* restore interrupt mask */ cmpl $1000000, %eax /* usec valid? */ jb 1f @@ -184,6 +185,7 @@ common_microtime: #if defined(I586_CPU) || defined(I686_CPU) ALIGN_TEXT pentium_microtime: + pushfl cli .byte 0x0f, 0x31 /* RDTSC */ subl _i586_ctr_bias, %eax |
