kolibrios-fun/contrib/sdk/sources/newlib/libc/sys/gettod.c
Sergey Semyonov (Serge) 7315bb05c0 newlib-2.1.0
git-svn-id: svn://kolibrios.org@4921 a494cfbc-eb01-0410-851d-a64ba20cac60
2014-05-10 22:12:19 +00:00

46 lines
1.1 KiB
C

#include <_ansi.h>
#include <reent.h>
#include <errno.h>
#include <time.h>
#include <sys/types.h>
#include <sys/time.h>
#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10)
int
_DEFUN (gettimeofday, (ptimeval, ptimezone),
struct timeval *ptimeval _AND
void *ptimezone)
{
unsigned int xtmp;
struct tm tmblk;
if( ptimeval )
{
ptimeval->tv_usec = 0;
__asm__ __volatile__("int $0x40":"=a"(xtmp):"0"(3));
tmblk.tm_sec = (xtmp>>16)&0xff;
tmblk.tm_min = (xtmp>>8)&0xff;
tmblk.tm_hour = xtmp&0xff;
BCD_TO_BIN(tmblk.tm_sec);
BCD_TO_BIN(tmblk.tm_min);
BCD_TO_BIN(tmblk.tm_hour);
__asm__ __volatile__("int $0x40":"=a"(xtmp):"0"(29));
tmblk.tm_mday = (xtmp>>16)&0xff;
tmblk.tm_mon = ((xtmp>>8)&0xff)-1;
tmblk.tm_year = ((xtmp&0xff)+2000)-1900;
tmblk.tm_wday = tmblk.tm_yday = 0;
tmblk.tm_isdst = -1;
ptimeval->tv_sec = mktime(&tmblk);
return 0;
}
else
{
errno = EINVAL;
return -1;
};
}