Move kernel dependent parts of <sys/time.h>cygwin-2_5_0-release

Move the kernel dependent parts of <sys/time.h> to new system-specific
header file <machine/_time.h>.  Provide an empty default implementation.
Add a specialized implementation for RTEMS.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>

1 files changed, 199 insertions, 0 deletions

diff --git a/newlib/libc/sys/rtems/include/machine/_time.h b/newlib/libc/sys/rtems/include/machine/_time.h
new file mode 100644
index 000000000..44a220d92
--- /dev/null
+++ b/newlib/libc/sys/rtems/include/machine/_time.h
@@ -0,0 +1,199 @@
+/*-
+ * Copyright (c) 1982, 1986, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)time.h	8.5 (Berkeley) 5/4/95
+ * $FreeBSD$
+ */
+
+#ifndef _SYS_TIME_H_
+#error "must be included via <sys/time.h>"
+#else /* _SYS_TIME_H_ */
+
+__BEGIN_DECLS
+extern volatile time_t _Timecounter_Time_second;
+extern volatile time_t _Timecounter_Time_uptime;
+extern struct bintime _Timecounter_Boottimebin;
+
+void	_Timecounter_Binuptime(struct bintime *);
+void	_Timecounter_Nanouptime(struct timespec *);
+void	_Timecounter_Microuptime(struct timeval *);
+void	_Timecounter_Bintime(struct bintime *);
+void	_Timecounter_Nanotime(struct timespec *);
+void	_Timecounter_Microtime(struct timeval *);
+void	_Timecounter_Getbinuptime(struct bintime *);
+void	_Timecounter_Getnanouptime(struct timespec *);
+void	_Timecounter_Getmicrouptime(struct timeval *);
+void	_Timecounter_Getbintime(struct bintime *);
+void	_Timecounter_Getnanotime(struct timespec *);
+void	_Timecounter_Getmicrotime(struct timeval *);
+__END_DECLS
+
+#ifdef _KERNEL
+
+/* Operations on timespecs */
+#define	timespecclear(tvp)	((tvp)->tv_sec = (tvp)->tv_nsec = 0)
+#define	timespecisset(tvp)	((tvp)->tv_sec || (tvp)->tv_nsec)
+#define	timespeccmp(tvp, uvp, cmp)					\
+	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
+	    ((tvp)->tv_nsec cmp (uvp)->tv_nsec) :			\
+	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
+#define	timespecadd(vvp, uvp)						\
+	do {								\
+		(vvp)->tv_sec += (uvp)->tv_sec;				\
+		(vvp)->tv_nsec += (uvp)->tv_nsec;			\
+		if ((vvp)->tv_nsec >= 1000000000) {			\
+			(vvp)->tv_sec++;				\
+			(vvp)->tv_nsec -= 1000000000;			\
+		}							\
+	} while (0)
+#define	timespecsub(vvp, uvp)						\
+	do {								\
+		(vvp)->tv_sec -= (uvp)->tv_sec;				\
+		(vvp)->tv_nsec -= (uvp)->tv_nsec;			\
+		if ((vvp)->tv_nsec < 0) {				\
+			(vvp)->tv_sec--;				\
+			(vvp)->tv_nsec += 1000000000;			\
+		}							\
+	} while (0)
+
+/* Operations on timevals. */
+
+#define	timevalclear(tvp)		((tvp)->tv_sec = (tvp)->tv_usec = 0)
+#define	timevalisset(tvp)		((tvp)->tv_sec || (tvp)->tv_usec)
+#define	timevalcmp(tvp, uvp, cmp)					\
+	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
+	    ((tvp)->tv_usec cmp (uvp)->tv_usec) :			\
+	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
+
+/* timevaladd and timevalsub are not inlined */
+
+/*
+ * Kernel to clock driver interface.
+ */
+void	inittodr(time_t base);
+void	resettodr(void);
+
+#define	time_second _Timecounter_Time_second
+#define	time_uptime _Timecounter_Time_uptime
+#define	boottimebin _Timecounter_Boottimebin
+extern struct timeval boottime;
+extern struct bintime tc_tick_bt;
+extern sbintime_t tc_tick_sbt;
+extern struct bintime tick_bt;
+extern sbintime_t tick_sbt;
+extern int tc_precexp;
+extern int tc_timepercentage;
+extern struct bintime bt_timethreshold;
+extern struct bintime bt_tickthreshold;
+extern sbintime_t sbt_timethreshold;
+extern sbintime_t sbt_tickthreshold;
+
+/*
+ * Functions for looking at our clock: [get]{bin,nano,micro}[up]time()
+ *
+ * Functions without the "get" prefix returns the best timestamp
+ * we can produce in the given format.
+ *
+ * "bin"   == struct bintime  == seconds + 64 bit fraction of seconds.
+ * "nano"  == struct timespec == seconds + nanoseconds.
+ * "micro" == struct timeval  == seconds + microseconds.
+ *
+ * Functions containing "up" returns time relative to boot and
+ * should be used for calculating time intervals.
+ *
+ * Functions without "up" returns UTC time.
+ *
+ * Functions with the "get" prefix returns a less precise result
+ * much faster than the functions without "get" prefix and should
+ * be used where a precision of 1/hz seconds is acceptable or where
+ * performance is priority. (NB: "precision", _not_ "resolution" !)
+ */
+
+#define	binuptime(_bt) _Timecounter_Binuptime(_bt)
+#define	nanouptime(_tsp) _Timecounter_Nanouptime(_tsp)
+#define	microuptime(_tvp) _Timecounter_Microuptime(_tvp)
+
+static __inline sbintime_t
+sbinuptime(void)
+{
+	struct bintime _bt;
+
+	binuptime(&_bt);
+	return (bttosbt(_bt));
+}
+
+#define	bintime(_bt) _Timecounter_Bintime(_bt)
+#define	nanotime(_tsp) _Timecounter_Nanotime(_tsp)
+#define	microtime(_tvp) _Timecounter_Microtime(_tvp)
+
+#define	getbinuptime(_bt) _Timecounter_Getbinuptime(_bt)
+#define	getnanouptime(_tsp) _Timecounter_Getnanouptime(_tsp)
+#define	getmicrouptime(_tvp) _Timecounter_Getmicrouptime(_tvp)
+
+static __inline sbintime_t
+getsbinuptime(void)
+{
+	struct bintime _bt;
+
+	getbinuptime(&_bt);
+	return (bttosbt(_bt));
+}
+
+#define	getbintime(_bt) _Timecounter_Getbintime(_bt)
+#define	getnanotime(_tsp) _Timecounter_Getnanotime(_tsp)
+#define	getmicrotime(_tvp) _Timecounter_Getmicrotime(_tvp)
+
+/* Other functions */
+int	itimerdecr(struct itimerval *itp, int usec);
+int	itimerfix(struct timeval *tv);
+int	ppsratecheck(struct timeval *, int *, int);
+int	ratecheck(struct timeval *, const struct timeval *);
+void	timevaladd(struct timeval *t1, const struct timeval *t2);
+void	timevalsub(struct timeval *t1, const struct timeval *t2);
+int	tvtohz(struct timeval *tv);
+
+#define	TC_DEFAULTPERC		5
+
+#define	BT2FREQ(bt)                                                     \
+	(((uint64_t)0x8000000000000000 + ((bt)->frac >> 2)) /           \
+	    ((bt)->frac >> 1))
+
+#define	SBT2FREQ(sbt)	((SBT_1S + ((sbt) >> 1)) / (sbt))
+
+#define	FREQ2BT(freq, bt)                                               \
+{									\
+	(bt)->sec = 0;                                                  \
+	(bt)->frac = ((uint64_t)0x8000000000000000  / (freq)) << 1;     \
+}
+
+#define	TIMESEL(sbt, sbt2)						\
+	(((sbt2) >= sbt_timethreshold) ?				\
+	    ((*(sbt) = getsbinuptime()), 1) : ((*(sbt) = sbinuptime()), 0))
+
+#endif /* _KERNEL */
+#endif /* _SYS_TIME_H_ */