0203 SIP gettimeofday 编译

gettimeofday 是个LINUX函数

微软官方的：
void gettimeofday(struct timeval *now, struct timezone *zone)
&leftsign;
    UnusedParameter(zone);
    Etotv(CurrentTime(),now);
&rightsign;

void Etotv(TIME e, struct timeval *tv)
&leftsign;
    INT64 t;

    tv->tv_sec = Int64ToInt32(Int64DividedByInt32(e, 10000000));
    Int32ToInt64(t, tv->tv_sec);
    t = Int64TimesInt32(t, 10000000);
    t = Int64Subtract(e, t);
    t = Int64DividedByInt32(t, 10);
    tv->tv_usec = Int64ToInt32(t);
&rightsign;

/*
 * Entry point for Int64DividedByInt32
 */

_FUNCTION(Int64DividedByInt32)

       stmdb  sp!,&leftsign;r4-r8,lr&rightsign;  /* save registers on stack */
       mov    r4,r3, asr #31  /* extend y (arg2) sign bits */
       b      DivCommon       /* jump to common divide routine */

这是人家的～～～～～

#include "config.h"
#include "wine/port.h"

#ifndef HAVE_GETTIMEOFDAY
__inline int gettimeofday(struct timeval *tv, struct timezone *tz)
#ifdef _WINDOWS
&leftsign;
    FILETIME        ft;
    LARGE_INTEGER   li;
    __int64         t;
    static int      tzflag;

    if (tv)
    &leftsign;
        GetSystemTimeAsFileTime(&ft);
        li.LowPart  = ft.dwLowDateTime;
        li.HighPart = ft.dwHighDateTime;
        t  = li.QuadPart;       /* In 100-nanosecond intervals */
        t -= EPOCHFILETIME;     /* Offset to the Epoch time */
        t /= 10;                /* In microseconds */
        tv->tv_sec  = (long)(t / 1000000);
        tv->tv_usec = (long)(t % 1000000);
    &rightsign;

    if (tz)
    &leftsign;
        if (!tzflag)
        &leftsign;
            _tzset();
            tzflag++;
        &rightsign;
        tz->tz_minuteswest = _timezone / 60;
        tz->tz_dsttime = _daylight;
    &rightsign;

    return 0;

#else /* !defined(_WINDOWS) */
    errno = ENOSYS;
    return -1;
#endif /* _WINDOWS */
#endif /* HAVE_GETTIMEOFDAY */
&rightsign;

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四月 6, 2006 at 9:53 上午 by yippee 1,007 次
Category: Dev
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