/* 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) */