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MFi386: the part of r179825 to reduce diffs against i386.

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This commit is contained in:
Yoshihiro Takahashi 2009-03-20 05:21:29 +00:00
parent c20a7fc9f6
commit 43d1b8129c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=190126
1 changed files with 21 additions and 10 deletions
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31
sys/boot/pc98/libpc98/time.c
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@ -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;