mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-21 06:12:34 +03:00
114 lines
2.7 KiB
C
114 lines
2.7 KiB
C
|
/* Reentrant version of gettimeofday system call
|
||
|
|
This implementation just calls the times/gettimeofday system calls.
|
||
|
|
Gettimeofday may not be available on all targets. It's presence
|
||
|
|
here is dubious. Consider it for internal use only. */
|
||
|
|
|
||
|
|
#include <reent.h>
|
||
|
|
#include <time.h>
|
||
|
|
#include <sys/time.h>
|
||
|
|
#include <sys/times.h>
|
||
|
|
#include <_syslist.h>
|
||
|
|
#include <errno.h>
|
||
|
|
|
||
|
|
/* Some targets provides their own versions of these functions. Those
|
||
|
|
targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */
|
||
|
|
|
||
|
|
#ifdef _REENT_ONLY
|
||
|
|
#ifndef REENTRANT_SYSCALLS_PROVIDED
|
||
|
|
#define REENTRANT_SYSCALLS_PROVIDED
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef REENTRANT_SYSCALLS_PROVIDED
|
||
|
|
|
||
|
|
int _dummy_gettimeofday_syscalls = 1;
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
/* We use the errno variable used by the system dependent layer. */
|
||
|
|
#undef errno
|
||
|
|
static int errno;
|
||
|
|
|
||
|
|
/*
|
||
|
|
FUNCTION
|
||
|
|
<<_gettimeofday_r>>---Reentrant version of gettimeofday
|
||
|
|
|
||
|
|
INDEX
|
||
|
|
_gettimeofday_r
|
||
|
|
|
||
|
|
ANSI_SYNOPSIS
|
||
|
|
#include <reent.h>
|
||
|
|
#include <time.h>
|
||
|
|
int _gettimeofday_r(struct _reent *<[ptr]>,
|
||
|
|
struct timeval *<[ptimeval]>,
|
||
|
|
void *<[ptimezone]>);
|
||
|
|
|
||
|
|
TRAD_SYNOPSIS
|
||
|
|
#include <reent.h>
|
||
|
|
#include <time.h>
|
||
|
|
int _gettimeofday_r(<[ptr]>, <[ptimeval]>, <[ptimezone]>)
|
||
|
|
struct _reent *<[ptr]>;
|
||
|
|
struct timeval *<[ptimeval]>;
|
||
|
|
void *<[ptimezone]>;
|
||
|
|
|
||
|
|
DESCRIPTION
|
||
|
|
This is a reentrant version of <<gettimeofday>>. It
|
||
|
|
takes a pointer to the global data block, which holds
|
||
|
|
<<errno>>.
|
||
|
|
|
||
|
|
This function is only available for a few targets.
|
||
|
|
Check libc.a to see if its available on yours.
|
||
|
|
*/
|
||
|
|
|
||
|
|
int
|
||
|
|
_DEFUN (_gettimeofday_r, (ptr, ptimeval, ptimezone),
|
||
|
|
struct _reent *ptr _AND
|
||
|
|
struct timeval *ptimeval _AND
|
||
|
|
void *ptimezone)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
errno = 0;
|
||
|
|
if ((ret = _gettimeofday (ptimeval, ptimezone)) == -1 && errno != 0)
|
||
|
|
ptr->_errno = errno;
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10)
|
||
|
|
|
||
|
|
int
|
||
|
|
_gettimeofday (struct timeval *tv, void *tz)
|
||
|
|
{
|
||
|
|
unsigned int xtmp;
|
||
|
|
struct tm tmblk;
|
||
|
|
|
||
|
|
if( tv )
|
||
|
|
{
|
||
|
|
tv->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;
|
||
|
|
tv->tv_sec = mktime(&tmblk);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
errno = EINVAL;
|
||
|
|
return -1;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
|