svn commit: r190126 - head/sys/boot/pc98/libpc98
Takahashi Yoshihiro
nyan at FreeBSD.org
Thu Mar 19 22:21:30 PDT 2009
Author: nyan
Date: Fri Mar 20 05:21:29 2009
New Revision: 190126
URL: http://svn.freebsd.org/changeset/base/190126
Log:
MFi386: the part of r179825 to reduce diffs against i386.
Modified:
head/sys/boot/pc98/libpc98/time.c
Modified: head/sys/boot/pc98/libpc98/time.c
==============================================================================
--- head/sys/boot/pc98/libpc98/time.c Fri Mar 20 04:53:12 2009 (r190125)
+++ head/sys/boot/pc98/libpc98/time.c Fri Mar 20 05:21:29 2009 (r190126)
@@ -33,23 +33,21 @@ __FBSDID("$FreeBSD$");
#include "bootstrap.h"
#include "libi386.h"
+static int bios_seconds(void);
+
/*
- * Return the time in seconds since the beginning of the day.
- *
- * If we pass midnight, don't wrap back to 0.
+ * Return the BIOS time-of-day value.
*
* XXX uses undocumented BCD support from libstand.
*/
-
-time_t
-time(time_t *t)
+static int
+bios_seconds(void)
{
- static time_t lasttime, now;
int hr, minute, sec;
unsigned char bios_time[6];
-
+
v86.ctl = 0;
- v86.addr = 0x1c; /* int 0x1c, function 0 */
+ v86.addr = 0x1c; /* int 0x1c, function 0 */
v86.eax = 0x0000;
v86.es = VTOPSEG(bios_time);
v86.ebx = VTOPOFF(bios_time);
@@ -59,7 +57,20 @@ time(time_t *t)
minute = bcd2bin(bios_time[4]);
sec = bcd2bin(bios_time[5]);
- now = hr * 3600 + minute * 60 + sec;
+ return (hr * 3600 + minute * 60 + sec);
+}
+
+/*
+ * Return the time in seconds since the beginning of the day.
+ */
+time_t
+time(time_t *t)
+{
+ static time_t lasttime;
+ time_t now;
+
+ now = bios_seconds();
+
if (now < lasttime)
now += 24 * 3600;
lasttime = now;
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