Update.

* sysdeps/unix/i386/i586/clock_getres.c: Removed.
	* sysdeps/unix/i386/i586/clock_gettime.c: Removed.
	* sysdeps/unix/i386/i586/clock_nanosleep.c: Removed.
	* sysdeps/unix/i386/i586/clock_settime.c: Removed.
	* sysdeps/unix/i386/i586/cpuclock-init.h: Removed.
	* sysdeps/generic/cpuclock-init.h: Removed.
	* sysdeps/unix/i386/i686/Implies: Removed.
	* sysdeps/unix/i386/i686/tempname.c: Removed.
	* sysdeps/i386/i686/Versions: New file.
	* sysdeps/unix/i386/i586/Versions: Removed.

	* sysdeps/posix/clock_getres.c: If HP_TIMING_AVAIL is nonzero handle
	CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID.
	* sysdeps/unix/clock_gettime.c: Likewise.
	* sysdeps/unix/clock_nanosleep.c: Likewise.
	* sysdeps/unix/clock_settime.c: Likewise.
	* sysdeps/posix/tempname.c: Is HP_TIMING_AVAIL is nonzero define
	RANDOM_BITS use CPU clock.

	* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/bits/time.h: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9b/bits/time.h: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc64/bits/time.h: New file.
	* sysdeps/sparc/Versions: New file.

	* elf/dl-support.c: Don't use cpuclock-init.h definitions, use
	hp-timing.h definitions.
	* sysdeps/generic/dl-sysdep.c: Likewise.

	* include/libc-internal.h: Include hp-timing.h.  Use hp_timing_t in
	__get_clockfreq prototype.

	* sysdeps/unix/sysv/linux/i386/get_clockfreq.c (__get_clockfreq):
	Use hp_timing_t type.

	* sysdeps/unix/sysv/linux/ia64/get_clockfreq.c: New file.

ChangeLog

@@ -1,5 +1,41 @@
 2001-04-23  Ulrich Drepper  <drepper@redhat.com>
 
+	* sysdeps/unix/i386/i586/clock_getres.c: Removed.
+	* sysdeps/unix/i386/i586/clock_gettime.c: Removed.
+	* sysdeps/unix/i386/i586/clock_nanosleep.c: Removed.
+	* sysdeps/unix/i386/i586/clock_settime.c: Removed.
+	* sysdeps/unix/i386/i586/cpuclock-init.h: Removed.
+	* sysdeps/generic/cpuclock-init.h: Removed.
+	* sysdeps/unix/i386/i686/Implies: Removed.
+	* sysdeps/unix/i386/i686/tempname.c: Removed.
+	* sysdeps/i386/i686/Versions: New file.
+	* sysdeps/unix/i386/i586/Versions: Removed.
+
+	* sysdeps/posix/clock_getres.c: If HP_TIMING_AVAIL is nonzero handle
+	CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID.
+	* sysdeps/unix/clock_gettime.c: Likewise.
+	* sysdeps/unix/clock_nanosleep.c: Likewise.
+	* sysdeps/unix/clock_settime.c: Likewise.
+	* sysdeps/posix/tempname.c: Is HP_TIMING_AVAIL is nonzero define
+	RANDOM_BITS use CPU clock.
+
+	* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/bits/time.h: New file.
+	* sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9b/bits/time.h: New file.
+	* sysdeps/unix/sysv/linux/sparc/sparc64/bits/time.h: New file.
+	* sysdeps/sparc/Versions: New file.
+
+	* elf/dl-support.c: Don't use cpuclock-init.h definitions, use
+	hp-timing.h definitions.
+	* sysdeps/generic/dl-sysdep.c: Likewise.
+
+	* include/libc-internal.h: Include hp-timing.h.  Use hp_timing_t in
+	__get_clockfreq prototype.
+
+	* sysdeps/unix/sysv/linux/i386/get_clockfreq.c (__get_clockfreq):
+	Use hp_timing_t type.
+
+	* sysdeps/unix/sysv/linux/ia64/get_clockfreq.c: New file.
+
 	* sysdeps/posix/pathconf.c (__pathconf): For _PC_ASYNC_IO test
 	whether named file is a regular file or a block device.
 	* sysdeps/posix/fpathconf.c (__fpathconf): Likewise.

elf/dl-support.c

@@ -29,7 +29,7 @@
 #include <bits/libc-lock.h>
 #include <dl-librecon.h>
 #include <unsecvars.h>
-#include <cpuclock-init.h>
+#include <hp-timing.h>
 
 extern char *__progname;
 char **_dl_argv = &__progname;	/* This is checked for some error messages.  */
@@ -94,8 +94,8 @@ struct r_scope_elem *_dl_main_searchlist = &_dl_initial_searchlist;
 int _dl_starting_up = 1;
 
 /* Initial value of the CPU clock.  */
-#ifdef CPUCLOCK_VARDEF
+#if HP_TIMING_AVAIL
-CPUCLOCK_VARDEF (_dl_cpuclock_offset);
+hp_timing_t _dl_cpuclock_offset;
 #endif
 
 /* During the program run we must not modify the global data of
@@ -133,8 +133,8 @@ static void non_dynamic_init (void) __attribute__ ((unused));
 static void
 non_dynamic_init (void)
 {
-#ifdef CPUCLOCK_INIT
+#if HP_TIMING_AVAIL
-  CPUCLOCK_INIT (_dl_cpuclock_offset);
+  HP_TIMING_NOW (_dl_cpuclock_offset);
 #endif
 
   if (!_dl_pagesize)

include/libc-internal.h

@@ -4,6 +4,8 @@
 #ifndef _LIBC_INTERNAL
 # define _LIBC_INTERNAL 1
 
+#include <hp-timing.h>
+
 /* Initialize the `__libc_enable_secure' flag.  */
 extern void __libc_init_secure (void);
 
@@ -19,7 +21,7 @@ extern void __cyg_profile_func_enter (void *this_fn, void *call_site);
 extern void __cyg_profile_func_exit (void *this_fn, void *call_site);
 
 /* Get frequency of the system processor.  */
-extern unsigned long long int __get_clockfreq (void);
+extern hp_timing_t __get_clockfreq (void);
 
 /* Free all allocated resources.  */
 extern void __libc_freeres (void);

linuxthreads/ChangeLog

@@ -1,3 +1,18 @@
+2001-04-23  Ulrich Drepper  <drepper@redhat.com>
+
+	* Makefile (libpthread-routines): Add ptclock_gettime and
+	ptclock_settime.
+	* internals.h: Don't use cpuclock-init.h definitions, use
+	hp-timing.h definitions.
+	* pthread.c: Likewise.
+	* manager.c: Likewise.
+	* ptclock_gettime.c: New file.
+	* ptclock_settime.c: New file.
+
+	* sysdeps/i386/i586/ptclock_gettime.c: Removed.
+	* sysdeps/i386/i586/ptclock_settime.c: Removed.
+	* sysdeps/i386/i586/Makefile: Removed.
+
 2001-04-22  Ulrich Drepper  <drepper@redhat.com>
 
 	* sysdeps/unix/sysv/linux/bits/posix_opt.h: Define _POSIX_ASYNCH_IO.

linuxthreads/Makefile

@@ -35,7 +35,8 @@ extra-libs-others := $(extra-libs)
 libpthread-routines := attr cancel condvar join manager mutex ptfork \
 		       ptlongjmp pthread signals specific errno lockfile \
 		       semaphore spinlock wrapsyscall rwlock pt-machine \
-		       oldsemaphore events getcpuclockid pspinlock barrier
+		       oldsemaphore events getcpuclockid pspinlock barrier \
+		       ptclock_gettime ptclock_settime
 
 nodelete-yes = -Wl,--enable-new-dtags,-z,nodelete
 initfirst-yes = -Wl,--enable-new-dtags,-z,initfirst

linuxthreads/internals.h

@@ -33,7 +33,7 @@ extern int __compare_and_swap (long int *p, long int oldval, long int newval);
 #include "pt-machine.h"
 #include "semaphore.h"
 #include "../linuxthreads_db/thread_dbP.h"
-#include <cpuclock-init.h>
+#include <hp-timing.h>
 
 #ifndef THREAD_GETMEM
 # define THREAD_GETMEM(descr, member) descr->member
@@ -180,8 +180,8 @@ struct _pthread_descr_struct {
   struct __res_state *p_resp;	/* Pointer to resolver state */
   struct __res_state p_res;	/* per-thread resolver state */
   int p_inheritsched;           /* copied from the thread attribute */
-#ifdef CPUCLOCK_VARDEF
+#if HP_TIMING_AVAIL
-  CPUCLOCK_VARDEF (p_cpuclock_offset); /* Initial CPU clock for thread.  */
+  hp_timing_t p_cpuclock_offset; /* Initial CPU clock for thread.  */
 #endif
   /* New elements must be added at the end.  */
 } __attribute__ ((aligned(32))); /* We need to align the structure so that

linuxthreads/manager.c

@@ -230,15 +230,15 @@ pthread_start_thread(void *arg)
   pthread_descr self = (pthread_descr) arg;
   struct pthread_request request;
   void * outcome;
-#ifdef CPUCLOCK_VARDEF
+#if HP_TIMING_AVAIL
-  CPUCLOCK_VARDEF (tmpclock);
+  hp_timing_t tmpclock;
 #endif
   /* Initialize special thread_self processing, if any.  */
 #ifdef INIT_THREAD_SELF
   INIT_THREAD_SELF(self, self->p_nr);
 #endif
-#ifdef CPUCLOCK_INIT
+#if HP_TIMING_AVAIL
-  CPUCLOCK_INIT (tmpclock);
+  HP_TIMING_NOW (tmpclock);
   THREAD_SETMEM (self, p_cpuclock_offset, tmpclock);
 #endif
   /* Make sure our pid field is initialized, just in case we get there

linuxthreads/ptclock_gettime.c

@@ -18,18 +18,18 @@
 
 #include <time.h>
 #include <libc-internal.h>
-
+#include "internals.h"
-#include "../../../internals.h"
 
 
+#if HP_TIMING_AVAIL
 int
-__pthread_clock_gettime (unsigned long long int freq, struct timespec *tp)
+__pthread_clock_gettime (hp_timing_t freq, struct timespec *tp)
 {
-  unsigned long long int tsc;
+  hp_timing_t tsc;
   pthread_descr self = thread_self ();
 
   /* Get the current counter.  */
-  asm volatile ("rdtsc" : "=A" (tsc));
+  HP_TIMING_NOW (tsc);
 
   /* Compute the offset since the start time of the process.  */
   tsc -= THREAD_GETMEM (self, p_cpuclock_offset);
@@ -43,3 +43,4 @@ __pthread_clock_gettime (unsigned long long int freq, struct timespec *tp)
 
   return 0;
 }
+#endif

linuxthreads/ptclock_settime.c

@@ -18,15 +18,16 @@
 
 #include <time.h>
 #include <libc-internal.h>
-
+#include "internals.h"
-#include "../../../internals.h"
 
 
+#if HP_TIMING_AVAIL
 void
-__pthread_clock_settime (unsigned long long int offset)
+__pthread_clock_settime (hp_timing_t offset)
 {
   pthread_descr self = thread_self ();
 
   /* Compute the offset since the start time of the process.  */
   THREAD_SETMEM (self, p_cpuclock_offset, offset);
 }
+#endif

linuxthreads/pthread.c

@@ -226,8 +226,8 @@ static void pthread_handle_sigrestart(int sig);
 static void pthread_handle_sigdebug(int sig);
 
 /* CPU clock handling.  */
-#ifdef CPUCLOCK_VARDECL
+#if HP_TIMING_AVAIL
-CPUCLOCK_VARDECL (_dl_cpuclock_offset);
+extern hp_timing_t _dl_cpuclock_offset;
 #endif
 
 /* Signal numbers used for the communication.
@@ -395,7 +395,7 @@ __pthread_initialize_minimal(void)
 #ifdef INIT_THREAD_SELF
   INIT_THREAD_SELF(&__pthread_initial_thread, 0);
 #endif
-#ifdef CPUCLOCK_INIT
+#if HP_TIMING_AVAIL
   __pthread_initial_thread.p_cpuclock_offset = _dl_cpuclock_offset;
 #endif
 }

linuxthreads/sysdeps/i386/i586/Makefile

@@ -1,3 +0,0 @@
-ifeq ($(subdir),linuxthreads)
-libpthread-sysdep_routines += ptclock_gettime ptclock_settime
-endif

sysdeps/generic/cpuclock-init.h

@@ -1 +0,0 @@
-/* In general there is no CPU clock.  */

sysdeps/generic/dl-sysdep.c

@@ -35,7 +35,7 @@
 #include <dl-machine.h>
 #include <dl-procinfo.h>
 #include <dl-osinfo.h>
-#include <cpuclock-init.h>
+#include <hp-timing.h>
 
 extern int _dl_argc;
 extern char **_dl_argv;
@@ -61,8 +61,8 @@ int __libc_multiple_libcs = 0;	/* Defining this here avoids the inclusion
 void *__libc_stack_end;
 static ElfW(auxv_t) *_dl_auxv;
 unsigned long int _dl_hwcap_mask = HWCAP_IMPORTANT;
-#ifdef CPUCLOCK_VARDEF
+#if HP_TIMING_AVAIL
-CPUCLOCK_VARDEF (_dl_cpuclock_offset);
+hp_timing_t _dl_cpuclock_offset;
 #endif
 
 #ifndef DL_FIND_ARG_COMPONENTS
@@ -100,8 +100,8 @@ _dl_sysdep_start (void **start_argptr,
 # define set_seen(tag) seen |= M ((tag)->a_type)
 #endif
 
-#ifdef CPUCLOCK_INIT
+#if HP_TIMING_AVAIL
-  CPUCLOCK_INIT (_dl_cpuclock_offset);
+  HP_TIMING_NOW (_dl_cpuclock_offset);
 #endif
 
   DL_FIND_ARG_COMPONENTS (start_argptr, _dl_argc, _dl_argv, _environ,

sysdeps/posix/clock_getres.c

@@ -17,14 +17,19 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <errno.h>
+#include <stdint.h>
 #include <time.h>
 #include <unistd.h>
+#include <sys/param.h>
+#include <libc-internal.h>
 
 
-#ifndef EXTRA_CLOCK_CASES
+#if HP_TIMING_AVAIL
-# define EXTRA_CLOCK_CASES
+/* Clock frequency of the processor.  */
+static long int nsec;
 #endif
 
+
 /* Get resolution of clock.  */
 int
 clock_getres (clockid_t clock_id, struct timespec *res)
@@ -50,7 +55,35 @@ clock_getres (clockid_t clock_id, struct timespec *res)
       }
       break;
 
-      EXTRA_CLOCK_CASES
+#if HP_TIMING_AVAIL
+    case CLOCK_PROCESS_CPUTIME_ID:
+    case CLOCK_THREAD_CPUTIME_ID:
+      {
+	if (__builtin_expect (nsec == 0, 0))
+	  {
+	    hp_timing_t freq;
+
+	    /* This can only happen if we haven't initialized the `freq'
+	       variable yet.  Do this now. We don't have to protect this
+	       code against multiple execution since all of them should
+	       lead to the same result.  */
+	    freq = __get_clockfreq ();
+	    if (__builtin_expect (freq == 0, 0))
+	      /* Something went wrong.  */
+	      break;
+
+	    nsec = MAX (UINT64_C (1000000000) / freq, 1);
+	  }
+
+	/* File in the values.  The seconds are always zero (unless we
+	   have a 1Hz machine).  */
+	res->tv_sec = 0;
+	res->tv_nsec = nsec;
+
+	retval = 0;
+      }
+      break;
+#endif
 
     default:
       __set_errno (EINVAL);

sysdeps/posix/tempname.c

@@ -107,6 +107,25 @@
 # define __secure_getenv getenv
 #endif
 
+#ifdef _LIBC
+# include <hp-timing.h>
+# if HP_TIMING_AVAIL
+#  define RANDOM_BITS(Var) \
+  if (__builtin_expect (value == UINT64_C (0), 0))			      \
+    {									      \
+      /* If this is the first time this function is used initialize	      \
+	 the variable we accumulate the value in to some somewhat	      \
+	 random value.  If we'd not do this programs at startup time	      \
+	 might have a reduced set of possible names, at least on slow	      \
+	 machines.  */							      \
+      struct timeval tv;						      \
+      __gettimeofday (&tv, NULL);					      \
+      value = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec;		      \
+    }									      \
+  HP_TIMING_NOW (Var)
+# endif
+#endif
+
 /* Use the widest available unsigned type if uint64_t is not
    available.  The algorithm below extracts a number less than 62**6
    (approximately 2**35.725) from uint64_t, so ancient hosts where

sysdeps/sparc/Versions

@@ -0,0 +1,6 @@
+ld {
+  GLIBC_2.2.3 {
+    # If this symbol is ever available on SPARC it was introduced in 2.2.3.
+    _dl_cpuclock_offset;
+  }
+}

sysdeps/unix/clock_gettime.c

@@ -17,14 +17,30 @@
    Boston, MA 02111-1307, USA.  */
 
 #include <errno.h>
+#include <stdint.h>
 #include <time.h>
 #include <sys/time.h>
+#include <libc-internal.h>
+#include <hp-timing.h>
 
 
-#ifndef EXTRA_CLOCK_CASES
+#if HP_TIMING_AVAIL
-# define EXTRA_CLOCK_CASES
+/* Clock frequency of the processor.  We make it a 64-bit variable
+   because some jokers are already playing with processors with more
+   than 4GHz.  */
+static hp_timing_t freq;
+
+
+/* We need the starting time for the process.  */
+extern hp_timing_t _dl_cpuclock_offset;
+
+
+/* This function is defined in the thread library.  */
+extern int __pthread_clock_gettime (hp_timing_t freq, struct timespec *tp)
+     __attribute__ ((__weak__));
 #endif
 
+
 /* Get current value of CLOCK and store it in TP.  */
 int
 clock_gettime (clockid_t clock_id, struct timespec *tp)
@@ -41,7 +57,48 @@ clock_gettime (clockid_t clock_id, struct timespec *tp)
 	TIMEVAL_TO_TIMESPEC (&tv, tp);
       break;
 
-      EXTRA_CLOCK_CASES
+#if HP_TIMING_AVAIL
+    case CLOCK_PROCESS_CPUTIME_ID:
+    case CLOCK_THREAD_CPUTIME_ID:
+      {
+	hp_timing_t tsc;
+
+	if (__builtin_expect (freq == 0, 0))
+	  {
+	    /* This can only happen if we haven't initialized the `freq'
+	       variable yet.  Do this now. We don't have to protect this
+	       code against multiple execution since all of them should
+	       lead to the same result.  */
+	    freq = __get_clockfreq ();
+	    if (__builtin_expect (freq == 0, 0))
+	      /* Something went wrong.  */
+	      break;
+	  }
+
+	if (clock_id == CLOCK_THREAD_CPUTIME_ID
+	    && __pthread_clock_gettime != NULL)
+	  {
+	    retval = __pthread_clock_gettime (freq, tp);
+	    break;
+	  }
+
+	/* Get the current counter.  */
+	HP_TIMING_NOW (tsc);
+
+	/* Compute the offset since the start time of the process.  */
+	tsc -= _dl_cpuclock_offset;
+
+	/* Compute the seconds.  */
+	tp->tv_sec = tsc / freq;
+
+	/* And the nanoseconds.  This computation should be stable until
+	   we get machines with about 16GHz frequency.  */
+	tp->tv_nsec = ((tsc % freq) * UINT64_C (1000000000)) / freq;
+
+	retval = 0;
+      }
+    break;
+#endif
 
     default:
       __set_errno (EINVAL);

sysdeps/unix/clock_nanosleep.c

@@ -20,9 +20,14 @@
 #include <assert.h>
 #include <errno.h>
 #include <time.h>
+#include <hp-timing.h>
 
 
-#ifndef CLOCK_P
+#if HP_TIMING_AVAIL
+# define CLOCK_P(clock) \
+  (clock) != CLOCK_PROCESS_CPUTIME_ID					      \
+  && (clock) != CLOCK_THREAD_CPUTIME_ID
+#else
 # define CLOCK_P(clock) 0
 #endif
 

sysdeps/unix/clock_settime.c

@@ -19,12 +19,26 @@
 #include <errno.h>
 #include <time.h>
 #include <sys/time.h>
+#include <libc-internal.h>
 
 
-#ifndef EXTRA_CLOCK_CASES
+#if HP_TIMING_AVAIL
-# define EXTRA_CLOCK_CASES
+/* Clock frequency of the processor.  We make it a 64-bit variable
+   because some jokers are already playing with processors with more
+   than 4GHz.  */
+static hp_timing_t freq;
+
+
+/* We need the starting time for the process.  */
+extern hp_timing_t _dl_cpuclock_offset;
+
+
+/* This function is defined in the thread library.  */
+extern void __pthread_clock_settime (hp_timing_t offset)
+     __attribute__ ((__weak__));
 #endif
 
+
 /* Set CLOCK to value TP.  */
 int
 clock_settime (clockid_t clock_id, const struct timespec *tp)
@@ -47,7 +61,45 @@ clock_settime (clockid_t clock_id, const struct timespec *tp)
       retval = settimeofday (&tv, NULL);
       break;
 
-      EXTRA_CLOCK_CASES
+#if HP_TIMING_AVAIL
+    case CLOCK_PROCESS_CPUTIME_ID:
+    case CLOCK_THREAD_CPUTIME_ID:
+      {
+	hp_timing_t tsc;
+	hp_timing_t usertime;
+
+	/* First thing is to get the current time.  */
+	HP_TIMING_NOW (tsc);
+
+	if (__builtin_expect (freq == 0, 0))
+	  {
+	    /* This can only happen if we haven't initialized the `freq'
+	       variable yet.  Do this now. We don't have to protect this
+	       code against multiple execution since all of them should
+	       lead to the same result.  */
+	    freq = __get_clockfreq ();
+	    if (__builtin_expect (freq == 0, 0))
+	      {
+		/* Something went wrong.  */
+		retval = -1;
+		break;
+	      }
+	  }
+
+	/* Convert the user-provided time into CPU ticks.  */
+	usertime = tp->tv_sec * freq + (tp->tv_nsec * freq) / 1000000000ull;
+
+	/* Determine the offset and use it as the new base value.  */
+	if (clock_id != CLOCK_THREAD_CPUTIME_ID
+	    || __pthread_clock_settime == NULL)
+	  _dl_cpuclock_offset = tsc - usertime;
+	else
+	  __pthread_clock_settime (tsc - usertime);
+
+	retval = 0;
+      }
+      break;
+#endif
 
     default:
       __set_errno (EINVAL);

sysdeps/unix/i386/i586/clock_getres.c

@@ -1,72 +0,0 @@
-/* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
-#include <time.h>
-#include <sys/param.h>
-#include <libc-internal.h>
-
-/* This implementation uses the TSC register in modern (i586 and up) IA-32
-   processors (most modern clones also provide it).  Since we need the
-   resolution of the clock and since determining this is not cheap, we
-   cache the value.  But this means that systems with processors running
-   at different speeds or process migration to machines with slower or
-   faster processors will not work without changes.  */
-
-
-/* Clock frequency of the processor.  */
-static long int nsec;
-
-
-/* We add an limitation here: we assume that the machine is not up as
-   long as it takes to wrap-around the 64-bit timestamp counter.  On a
-   4GHz machine it would take 136 years of uptime to wrap around so
-   this "limitation" is not severe.
-
-   We use this clock also as the monotonic clock since we don't allow
-   setting the CPU-time clock.  If this should ever change we will have
-   to separate the two.  */
-#define EXTRA_CLOCK_CASES \
-  case CLOCK_PROCESS_CPUTIME_ID:					      \
-  case CLOCK_THREAD_CPUTIME_ID:						      \
-    {									      \
-      if (__builtin_expect (nsec == 0, 0))				      \
-	{								      \
-	  unsigned long long int freq;					      \
-									      \
-	  /* This can only happen if we haven't initialized the `freq'	      \
-	     variable yet.  Do this now. We don't have to protect this	      \
-	     code against multiple execution since all of them should	      \
-	     lead to the same result.  */				      \
-	  freq = __get_clockfreq ();					      \
-	  if (__builtin_expect (freq == 0, 0))				      \
-	    /* Something went wrong.  */				      \
-	    break;							      \
-									      \
-	  nsec = MAX (1000000000ULL / freq, 1);				      \
-	}								      \
-									      \
-      /* File in the values.  The seconds are always zero (unless we	      \
-	 have a 1Hz machine).  */					      \
-      res->tv_sec = 0;							      \
-      res->tv_nsec = nsec;						      \
-									      \
-      retval = 0;							      \
-    }									      \
-    break;
-
-#include <sysdeps/posix/clock_getres.c>

sysdeps/unix/i386/i586/clock_gettime.c

@@ -1,107 +0,0 @@
-/* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
-#include <time.h>
-#include <libc-internal.h>
-
-#include "cpuclock-init.h"
-
-
-/* This implementation uses the TSC register in modern (i586 and up) IA-32
-   processors (most modern clones also provide it).  Since we need the
-   resolution of the clock and since determining this is not cheap, we
-   cache the value.  But this means that systems with processors running
-   at different speeds or process migration to machines with slower or
-   faster processors will not work without changes.  */
-
-
-/* Clock frequency of the processor.  We make it a 64-bit variable
-   because some jokers are already playing with processors with more
-   than 4GHz.  */
-static unsigned long long int freq;
-
-
-/* We need the starting time for the process.  */
-CPUCLOCK_VARDECL (_dl_cpuclock_offset);
-
-
-/* This function is defined in the thread library.  */
-extern int __pthread_clock_gettime (unsigned long long int freq,
-				    struct timespec *tp)
-     __attribute__ ((__weak__));
-
-
-/* We add an limitation here: we assume that the process is not
-   running as long as it takes to wrap-around the 64-bit timestamp
-   counter.  On a 4GHz machine it would take 136 years of uptime to
-   wrap around so this "limitation" is not severe.  */
-#define EXTRA_CLOCK_CASES \
-  case CLOCK_THREAD_CPUTIME_ID:						      \
-    if (__pthread_clock_gettime != NULL)				      \
-      {									      \
-	if (__builtin_expect (freq == 0, 0))				      \
-	  {								      \
-	    /* This can only happen if we haven't initialized the `freq'      \
-	       variable yet.  Do this now. We don't have to protect this      \
-	       code against multiple execution since all of them should	      \
-	       lead to the same result.  */				      \
-	    freq = __get_clockfreq ();					      \
-	    if (__builtin_expect (freq == 0, 0))			      \
-	      /* Something went wrong.  */				      \
-	      break;							      \
-	  }								      \
-									      \
-	retval = __pthread_clock_gettime (freq, tp);			      \
-	break;								      \
-      }									      \
-    /* FALLTHROUGH */							      \
-									      \
-  case CLOCK_PROCESS_CPUTIME_ID:					      \
-    {									      \
-      unsigned long long int tsc;					      \
-									      \
-      if (__builtin_expect (freq == 0, 0))				      \
-	{								      \
-	  /* This can only happen if we haven't initialized the `freq'	      \
-	     variable yet.  Do this now. We don't have to protect this	      \
-	     code against multiple execution since all of them should	      \
-	     lead to the same result.  */				      \
-	  freq = __get_clockfreq ();					      \
-	  if (__builtin_expect (freq == 0, 0))				      \
-	    /* Something went wrong.  */				      \
-	    break;							      \
-	}								      \
-									      \
-      /* Get the current counter.  */					      \
-      asm volatile ("rdtsc" : "=A" (tsc));				      \
-									      \
-      /* Compute the offset since the start time of the process.  */	      \
-      tsc -= _dl_cpuclock_offset;					      \
-									      \
-      /* Compute the seconds.  */					      \
-      tp->tv_sec = tsc / freq;						      \
-									      \
-      /* And the nanoseconds.  This computation should be stable until	      \
-	 we get machines with about 16GHz frequency.  */		      \
-      tp->tv_nsec = ((tsc % freq) * 1000000000ull) / freq;		      \
-									      \
-      retval = 0;							      \
-    }									      \
-    break;
-
-#include <sysdeps/unix/clock_gettime.c>

sysdeps/unix/i386/i586/clock_nanosleep.c

@@ -1,25 +0,0 @@
-/* High-resolution sleep with the specified clock.
-   Copyright (C) 2000 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
-/* Additional definitions for the x86 version.  */
-#define CLOCK_P(clock) \
-  (clock) != CLOCK_PROCESS_CPUTIME_ID					      \
-  && (clock) != CLOCK_THREAD_CPUTIME_ID
-
-#include <sysdeps/unix/clock_nanosleep.c>

sysdeps/unix/i386/i586/clock_settime.c

@@ -1,85 +0,0 @@
-/* Copyright (C) 2001 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
-#include <time.h>
-
-#include "cpuclock-init.h"
-#include "libc-internal.h"
-
-/* This implementation uses the TSC register in modern (i586 and up) IA-32
-   processors (most modern clones also provide it).  Since we need the
-   resolution of the clock and since determining this is not cheap, we
-   cache the value.  But this means that systems with processors running
-   at different speeds or process migration to machines with slower or
-   faster processors will not work without changes.  */
-
-
-/* Clock frequency of the processor.  We make it a 64-bit variable
-   because some jokers are already playing with processors with more
-   than 4GHz.  */
-static unsigned long long int freq;
-
-
-/* We need the starting time for the process.  */
-CPUCLOCK_VARDECL (_dl_cpuclock_offset);
-
-
-/* This function is defined in the thread library.  */
-extern void __pthread_clock_settime (unsigned long long int offset)
-     __attribute__ ((__weak__));
-
-
-/* We add an limitation here: we assume that the process is not
-   running as long as it takes to wrap-around the 64-bit timestamp
-   counter.  On a 4GHz machine it would take 136 years of uptime to
-   wrap around so this "limitation" is not severe.  */
-#define EXTRA_CLOCK_CASES \
-  case CLOCK_PROCESS_CPUTIME_ID:					      \
-  case CLOCK_THREAD_CPUTIME_ID:						      \
-    {									      \
-      unsigned long long int tsc;					      \
-      unsigned long long int usertime;					      \
-									      \
-      /* First thing is to get the current time.  */			      \
-      asm volatile ("rdtsc" : "=A" (tsc));				      \
-									      \
-      if (__builtin_expect (freq == 0, 0))				      \
-	{								      \
-	  /* This can only happen if we haven't initialized the `freq'	      \
-	     variable yet.  Do this now. We don't have to protect this	      \
-	     code against multiple execution since all of them should	      \
-	     lead to the same result.  */				      \
-	  freq = __get_clockfreq ();					      \
-	  if (__builtin_expect (freq == 0, 0))				      \
-	    /* Something went wrong.  */				      \
-	    break;							      \
-	}								      \
-									      \
-      /* Convert the user-provided time into CPU ticks.  */		      \
-      usertime = tp->tv_sec * freq + (tp->tv_nsec * freq) / 1000000000ull;    \
-									      \
-      /* Determine the offset and use it as the new base value.  */	      \
-      if (clock_id != CLOCK_THREAD_CPUTIME_ID				      \
-	  || __pthread_clock_settime == NULL)				      \
-	_dl_cpuclock_offset = tsc - usertime;				      \
-      else								      \
-	__pthread_clock_settime (tsc - usertime);			      \
-    }									      \
-  break;
-
-#include <sysdeps/unix/clock_settime.c>

sysdeps/unix/i386/i586/cpuclock-init.h

@@ -1,27 +0,0 @@
-/* x86 TSC based CPU clock initialization code.
-   Copyright (C) 2001 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
-/* The TSC value has 64 bits.  */
-#define CPUCLOCK_VARDEF(name) unsigned long long int name
-
-/* A declaration.  */
-#define CPUCLOCK_VARDECL(name) extern unsigned long long int name
-
-/* Reading the TSC value is a simple instruction.  */
-#define CPUCLOCK_INIT(name) asm volatile ("rdtsc" : "=A" (name))

sysdeps/unix/i386/i686/Implies

@@ -1 +0,0 @@
-unix/i386/i586

sysdeps/unix/i386/i686/tempname.c

@@ -1,35 +0,0 @@
-/* Copyright (C) 2001 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
-/* For i686 and up we have a better and faster source of random bits in the
-   form of the time stamp counter.  */
-#define RANDOM_BITS(Var) \
-  if (__builtin_expect (value == UINT64_C (0), 0))			      \
-    {									      \
-      /* If this is the first time this function is used initialize	      \
-	 the variable we accumulate the value in to some somewhat	      \
-	 random value.  If we'd not do this programs at startup time	      \
-	 might have a reduced set of possible names, at least on slow	      \
-	 machines.  */							      \
-      struct timeval tv;						      \
-      __gettimeofday (&tv, NULL);					      \
-      value = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec;		      \
-    }									      \
-  __asm__ __volatile__ ("rdtsc" : "=A" (Var))
-
-#include_next <tempname.c>

sysdeps/unix/sysv/linux/i386/get_clockfreq.c

@@ -24,7 +24,7 @@
 #include <libc-internal.h>
 
 
-unsigned long long int
+hp_timing_t
 __get_clockfreq (void)
 {
   /* We read the information from the /proc filesystem.  It contains at
@@ -33,7 +33,7 @@ __get_clockfreq (void)
      or also
 	cpu MHz         : 497.841
      We search for this line and convert the number in an integer.  */
-  static unsigned long long int result;
+  static hp_timing_t result;
   int fd;
 
   /* If this function was called before, we know the result.  */

sysdeps/unix/sysv/linux/ia64/get_clockfreq.c

@@ -0,0 +1,89 @@
+/* Get frequency of the system processor.  IA-64/Linux version.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <ctype.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+#include <libc-internal.h>
+
+
+hp_timing_t
+__get_clockfreq (void)
+{
+  /* We read the information from the /proc filesystem.  It contains at
+     least one line like
+	itc MHz    : 733.390988
+     We search for this line and convert the number in an integer.  */
+  static hp_timing_t result;
+  int fd;
+
+  /* If this function was called before, we know the result.  */
+  if (result != 0)
+    return result;
+
+  fd = open ("/proc/cpuinfo", O_RDONLY);
+  if (__builtin_expect (fd != -1, 1))
+    {
+      /* XXX AFAIK the /proc filesystem can generate "files" only up
+         to a size of 4096 bytes.  */
+      char buf[4096];
+      ssize_t n;
+
+      n = read (fd, buf, sizeof buf);
+      if (__builtin_expect (n, 1) > 0)
+	{
+	  char *mhz = memmem (buf, n, "itc MHz", 7);
+
+	  if (__builtin_expect (mhz != NULL, 1))
+	    {
+	      char *endp = buf + n;
+	      int seen_decpoint = 0;
+	      int ndigits = 0;
+
+	      /* Search for the beginning of the string.  */
+	      while (mhz < endp && (*mhz < '0' || *mhz > '9') && *mhz != '\n')
+		++mhz;
+
+	      while (mhz < endp && *mhz != '\n')
+		{
+		  if (*mhz >= '0' && *mhz <= '9')
+		    {
+		      result *= 10;
+		      result += *mhz - '0';
+		      if (seen_decpoint)
+			++ndigits;
+		    }
+		  else if (*mhz == '.')
+		    seen_decpoint = 1;
+
+		  ++mhz;
+		}
+
+	      /* Compensate for missing digits at the end.  */
+	      while (ndigits++ < 6)
+		result *= 10;
+	    }
+	}
+
+      close (fd);
+    }
+
+  return result;
+}

sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/bits/time.h

@@ -0,0 +1,73 @@
+/* System-dependent timing definitions.  Linux/SPARCv9 version.
+   Copyright (C) 1996, 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * Never include this file directly; use <time.h> instead.
+ */
+
+#ifndef __need_timeval
+# ifndef _BITS_TIME_H
+#  define _BITS_TIME_H	1
+
+/* ISO/IEC 9899:1990 7.12.1: <time.h>
+   The macro `CLOCKS_PER_SEC' is the number per second of the value
+   returned by the `clock' function. */
+/* CAE XSH, Issue 4, Version 2: <time.h>
+   The value of CLOCKS_PER_SEC is required to be 1 million on all
+   XSI-conformant systems. */
+#  define CLOCKS_PER_SEC  1000000l
+
+#  if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K
+/* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK
+   presents the real value for clock ticks per second for the system.  */
+#   include <bits/types.h>
+extern long int __sysconf (int);
+#   define CLK_TCK ((__clock_t) __sysconf (2))	/* 2 is _SC_CLK_TCK */
+#  endif
+
+#  ifdef __USE_POSIX199309
+/* Identifier for system-wide realtime clock.  */
+#   define CLOCK_REALTIME		0
+/* High-resolution timer from the CPU.  */
+#   define CLOCK_PROCESS_CPUTIME_ID	2
+/* Thread-specific CPU-time clock.  */
+#   define CLOCK_THREAD_CPUTIME_ID	3
+
+/* Flag to indicate time is absolute.  */
+#   define TIMER_ABSTIME		1
+#  endif
+
+# endif	/* bits/time.h */
+#endif
+
+#ifdef __need_timeval
+# undef __need_timeval
+# ifndef _STRUCT_TIMEVAL
+#  define _STRUCT_TIMEVAL	1
+#  include <bits/types.h>
+
+/* A time value that is accurate to the nearest
+   microsecond but also has a range of years.  */
+struct timeval
+  {
+    __time_t tv_sec;		/* Seconds.  */
+    __suseconds_t tv_usec;	/* Microseconds.  */
+  };
+# endif	/* struct timeval */
+#endif	/* need timeval */

sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9b/bits/time.h

@@ -0,0 +1,73 @@
+/* System-dependent timing definitions.  Linux/SPARCv9b version.
+   Copyright (C) 1996, 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * Never include this file directly; use <time.h> instead.
+ */
+
+#ifndef __need_timeval
+# ifndef _BITS_TIME_H
+#  define _BITS_TIME_H	1
+
+/* ISO/IEC 9899:1990 7.12.1: <time.h>
+   The macro `CLOCKS_PER_SEC' is the number per second of the value
+   returned by the `clock' function. */
+/* CAE XSH, Issue 4, Version 2: <time.h>
+   The value of CLOCKS_PER_SEC is required to be 1 million on all
+   XSI-conformant systems. */
+#  define CLOCKS_PER_SEC  1000000l
+
+#  if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K
+/* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK
+   presents the real value for clock ticks per second for the system.  */
+#   include <bits/types.h>
+extern long int __sysconf (int);
+#   define CLK_TCK ((__clock_t) __sysconf (2))	/* 2 is _SC_CLK_TCK */
+#  endif
+
+#  ifdef __USE_POSIX199309
+/* Identifier for system-wide realtime clock.  */
+#   define CLOCK_REALTIME		0
+/* High-resolution timer from the CPU.  */
+#   define CLOCK_PROCESS_CPUTIME_ID	2
+/* Thread-specific CPU-time clock.  */
+#   define CLOCK_THREAD_CPUTIME_ID	3
+
+/* Flag to indicate time is absolute.  */
+#   define TIMER_ABSTIME		1
+#  endif
+
+# endif	/* bits/time.h */
+#endif
+
+#ifdef __need_timeval
+# undef __need_timeval
+# ifndef _STRUCT_TIMEVAL
+#  define _STRUCT_TIMEVAL	1
+#  include <bits/types.h>
+
+/* A time value that is accurate to the nearest
+   microsecond but also has a range of years.  */
+struct timeval
+  {
+    __time_t tv_sec;		/* Seconds.  */
+    __suseconds_t tv_usec;	/* Microseconds.  */
+  };
+# endif	/* struct timeval */
+#endif	/* need timeval */

sysdeps/unix/sysv/linux/sparc/sparc64/bits/time.h

@@ -0,0 +1,73 @@
+/* System-dependent timing definitions.  Linux/SPARC64 version.
+   Copyright (C) 1996, 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * Never include this file directly; use <time.h> instead.
+ */
+
+#ifndef __need_timeval
+# ifndef _BITS_TIME_H
+#  define _BITS_TIME_H	1
+
+/* ISO/IEC 9899:1990 7.12.1: <time.h>
+   The macro `CLOCKS_PER_SEC' is the number per second of the value
+   returned by the `clock' function. */
+/* CAE XSH, Issue 4, Version 2: <time.h>
+   The value of CLOCKS_PER_SEC is required to be 1 million on all
+   XSI-conformant systems. */
+#  define CLOCKS_PER_SEC  1000000l
+
+#  if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K
+/* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK
+   presents the real value for clock ticks per second for the system.  */
+#   include <bits/types.h>
+extern long int __sysconf (int);
+#   define CLK_TCK ((__clock_t) __sysconf (2))	/* 2 is _SC_CLK_TCK */
+#  endif
+
+#  ifdef __USE_POSIX199309
+/* Identifier for system-wide realtime clock.  */
+#   define CLOCK_REALTIME		0
+/* High-resolution timer from the CPU.  */
+#   define CLOCK_PROCESS_CPUTIME_ID	2
+/* Thread-specific CPU-time clock.  */
+#   define CLOCK_THREAD_CPUTIME_ID	3
+
+/* Flag to indicate time is absolute.  */
+#   define TIMER_ABSTIME		1
+#  endif
+
+# endif	/* bits/time.h */
+#endif
+
+#ifdef __need_timeval
+# undef __need_timeval
+# ifndef _STRUCT_TIMEVAL
+#  define _STRUCT_TIMEVAL	1
+#  include <bits/types.h>
+
+/* A time value that is accurate to the nearest
+   microsecond but also has a range of years.  */
+struct timeval
+  {
+    __time_t tv_sec;		/* Seconds.  */
+    __suseconds_t tv_usec;	/* Microseconds.  */
+  };
+# endif	/* struct timeval */
+#endif	/* need timeval */