Update.

2001-04-21  Ulrich Drepper  <drepper@redhat.com>

	* elf/dl-support.c: Include cpuclock-init.h.  Use CPUCLOCK_VARDEF and
	CPUCLOCK_INIT if defined.
	* sysdeps/generic/dl-sysdep.c: Likewise.
	* sysdeps/generic/cpuclock-init.h: New file.
	* sysdeps/unix/i386/i586/cpuclock-init.h: New file.
	* sysdeps/unix/i386/i586/Versions: New file.
	* sysdeps/unix/i386/i586/clock_settime.c: New file.
	* sysdeps/unix/i386/i586/clock_gettime.c: Handle thread CPU clock
	separately by calling __pthread_clock_gettime if this function is
	available.  Subtract offset from tsc value before computing time value.

10 files changed, 170 insertions, 19 deletions

diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
index ca64e52..e74f0bf 100644
--- a/linuxthreads/ChangeLog
+++ b/linuxthreads/ChangeLog
@@ -1,3 +1,21 @@
+2001-04-21  Ulrich Drepper  <drepper@redhat.com>
+
+	* internals.h: Include <cpuclock-init.h>.
+	(struct _pthread_descr_struct): Add p_cpuclock_offset field if
+	CPUCLOCK_VARDEF is defined.
+	* pthread.c (__pthread_initialize_minimal): Initialize
+	p_cpuclock_offset field for main thread if CPUCLOCK_INIT is defined.
+	* manager.c (pthread_start_thread): Set p_cpuclock_offset field
+	for new thread to current CPU clock value.
+
+	* sysdeps/i386/useldt.h: Extend all the macros to handle 8-byte values.
+
+	* sysdeps/i386/i586/Makefile: New file.
+	* sysdeps/i386/i586/Versions: New file.
+	* sysdeps/i386/i586/ptclock_gettime.c: New file.
+	* sysdeps/i386/i586/ptclock_settime.c: New file.
+	* sysdeps/i386/i686/Implies: New file.
+
 2001-04-18  Jakub Jelinek  <jakub@redhat.com>
 
 	* sysdeps/unix/sysv/linux/sparc/sparc64/Makefile: Put specs into
diff --git a/linuxthreads/internals.h b/linuxthreads/internals.h
index 998f778..fbe0ea3 100644
--- a/linuxthreads/internals.h
+++ b/linuxthreads/internals.h
@@ -33,6 +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>
 
 #ifndef THREAD_GETMEM
 # define THREAD_GETMEM(descr, member) descr->member
@@ -179,6 +180,9 @@ 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
+  CPUCLOCK_VARDEF (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
 				    doubles are aligned properly.  This is 8
diff --git a/linuxthreads/manager.c b/linuxthreads/manager.c
index 431e149..dbe2aa2 100644
--- a/linuxthreads/manager.c
+++ b/linuxthreads/manager.c
@@ -225,10 +225,17 @@ static int pthread_start_thread(void *arg)
   pthread_descr self = (pthread_descr) arg;
   struct pthread_request request;
   void * outcome;
+#ifdef CPUCLOCK_VARDEF
+  CPUCLOCK_VARDEF (tmpclock);
+#endif
   /* Initialize special thread_self processing, if any.  */
 #ifdef INIT_THREAD_SELF
   INIT_THREAD_SELF(self, self->p_nr);
 #endif
+#ifdef CPUCLOCK_INIT
+  CPUCLOCK_INIT (tmpclock);
+  THREAD_SETMEM (self, p_cpuclock_offset, tmpclock);
+#endif
   /* Make sure our pid field is initialized, just in case we get there
      before our father has initialized it. */
   THREAD_SETMEM(self, p_pid, __getpid());
diff --git a/linuxthreads/pthread.c b/linuxthreads/pthread.c
index ff9c083..73a7acb 100644
--- a/linuxthreads/pthread.c
+++ b/linuxthreads/pthread.c
@@ -225,6 +225,11 @@ static void pthread_handle_sigcancel(int sig);
 static void pthread_handle_sigrestart(int sig);
 static void pthread_handle_sigdebug(int sig);
 
+/* CPU clock handling.  */
+#ifdef CPUCLOCK_VARDECL
+CPUCLOCK_VARDECL (_dl_cpuclock_offset);
+#endif
+
 /* Signal numbers used for the communication.
    In these variables we keep track of the used variables.  If the
    platform does not support any real-time signals we will define the
@@ -390,6 +395,9 @@ __pthread_initialize_minimal(void)
 #ifdef INIT_THREAD_SELF
   INIT_THREAD_SELF(&__pthread_initial_thread, 0);
 #endif
+#ifdef CPUCLOCK_INIT
+  __pthread_initial_thread.p_cpuclock_offset = _dl_cpuclock_offset;
+#endif
 }
 
 
diff --git a/linuxthreads/sysdeps/i386/i586/Makefile b/linuxthreads/sysdeps/i386/i586/Makefile
new file mode 100644
index 0000000..96c195f
--- /dev/null
+++ b/linuxthreads/sysdeps/i386/i586/Makefile
@@ -0,0 +1,3 @@
+ifeq ($(subdir),linuxthreads)
+libpthread-sysdep_routines += ptclock_gettime ptclock_settime
+endif
diff --git a/linuxthreads/sysdeps/i386/i586/Versions b/linuxthreads/sysdeps/i386/i586/Versions
new file mode 100644
index 0000000..f9921af
--- /dev/null
+++ b/linuxthreads/sysdeps/i386/i586/Versions
@@ -0,0 +1,5 @@
+libpthread {
+  GLIBC_2.2.3 {
+    __pthread_clock_gettime; __pthread_clock_settime;
+  }
+}
diff --git a/linuxthreads/sysdeps/i386/i586/ptclock_gettime.c b/linuxthreads/sysdeps/i386/i586/ptclock_gettime.c
new file mode 100644
index 0000000..8182510
--- /dev/null
+++ b/linuxthreads/sysdeps/i386/i586/ptclock_gettime.c
@@ -0,0 +1,45 @@
+/* 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 <libc-internal.h>
+
+#include "../../../internals.h"
+
+
+int
+__pthread_clock_gettime (unsigned long long int freq, struct timespec *tp)
+{
+  unsigned long long int tsc;
+  pthread_descr self = thread_self ();
+
+  /* Get the current counter.  */
+  asm volatile ("rdtsc" : "=A" (tsc));
+
+  /* Compute the offset since the start time of the process.  */
+  tsc -= THREAD_GETMEM (self, p_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;
+
+  return 0;
+}
diff --git a/linuxthreads/sysdeps/i386/i586/ptclock_settime.c b/linuxthreads/sysdeps/i386/i586/ptclock_settime.c
new file mode 100644
index 0000000..3026528
--- /dev/null
+++ b/linuxthreads/sysdeps/i386/i586/ptclock_settime.c
@@ -0,0 +1,32 @@
+/* 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 <libc-internal.h>
+
+#include "../../../internals.h"
+
+
+void
+__pthread_clock_settime (unsigned long long int offset)
+{
+  pthread_descr self = thread_self ();
+
+  /* Compute the offset since the start time of the process.  */
+  THREAD_SETMEM (self, p_cpuclock_offset, offset);
+}
diff --git a/linuxthreads/sysdeps/i386/i686/Implies b/linuxthreads/sysdeps/i386/i686/Implies
new file mode 100644
index 0000000..0df509e
--- /dev/null
+++ b/linuxthreads/sysdeps/i386/i686/Implies
@@ -0,0 +1 @@
+i386/i586
diff --git a/linuxthreads/sysdeps/i386/useldt.h b/linuxthreads/sysdeps/i386/useldt.h
index ebf520c..b9566ac 100644
--- a/linuxthreads/sysdeps/i386/useldt.h
+++ b/linuxthreads/sysdeps/i386/useldt.h
@@ -1,6 +1,6 @@
 /* Special definitions for ix86 machine using segment register based
    thread descriptor.
-   Copyright (C) 1998, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2000, 2001 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>.
 
@@ -88,16 +88,24 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t);
 			  : "0" (0),					      \
 			    "i" (offsetof (struct _pthread_descr_struct,      \
 					   member)));			      \
+  else if (sizeof (__value) == 4)					      \
+    __asm__ __volatile__ ("movl %%gs:%P1,%0"				      \
+			  : "=r" (__value)				      \
+			  : "i" (offsetof (struct _pthread_descr_struct,      \
+					   member)));			      \
   else									      \
     {									      \
-      if (sizeof (__value) != 4)					      \
-	/* There should not be any value with a size other than 1 or 4.  */   \
+      if (sizeof (__value) != 8)					      \
+	/* There should not be any value with a size other than 1, 4 or 8.  */\
 	abort ();							      \
 									      \
-      __asm__ __volatile__ ("movl %%gs:%P1,%0"				      \
-			    : "=r" (__value)				      \
+      __asm__ __volatile__ ("movl %%gs:%P1,%%eax\n\t"			      \
+			    "movl %%gs:%P2,%%edx"			      \
+			    : "=A" (__value)				      \
 			    : "i" (offsetof (struct _pthread_descr_struct,    \
-					     member)));			      \
+					     member)),			      \
+			      "i" (offsetof (struct _pthread_descr_struct,    \
+					     member) + 4));		      \
     }									      \
   __value;								      \
 })
@@ -112,14 +120,20 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t);
 			  : "0" (0),					      \
 			    "r" (offsetof (struct _pthread_descr_struct,      \
 					   member)));			      \
+  else if (sizeof (__value) == 4)					      \
+    __asm__ __volatile__ ("movl %%gs:(%1),%0"				      \
+			  : "=r" (__value)				      \
+			  : "r" (offsetof (struct _pthread_descr_struct,      \
+					   member)));			      \
   else									      \
     {									      \
-      if (sizeof (__value) != 4)					      \
-	/* There should not be any value with a size other than 1 or 4.  */   \
+      if (sizeof (__value) != 8)					      \
+	/* There should not be any value with a size other than 1, 4 or 8.  */\
 	abort ();							      \
 									      \
-      __asm__ __volatile__ ("movl %%gs:(%1),%0"				      \
-			    : "=r" (__value)				      \
+      __asm__ __volatile__ ("movl %%gs:(%1),%%eax\n\t"			      \
+			    "movl %%gs:4(%1),%%edx"			      \
+			    : "=&A" (__value)				      \
 			    : "r" (offsetof (struct _pthread_descr_struct,    \
 					     member)));			      \
     }									      \
@@ -135,16 +149,24 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t);
 			  : "q" (__value),				      \
 			    "i" (offsetof (struct _pthread_descr_struct,      \
 					   member)));			      \
+  else if (sizeof (__value) == 4)					      \
+    __asm__ __volatile__ ("movl %0,%%gs:%P1" :				      \
+			  : "r" (__value),				      \
+			    "i" (offsetof (struct _pthread_descr_struct,      \
+					   member)));			      \
   else									      \
     {									      \
-      if (sizeof (__value) != 4)					      \
-	/* There should not be any value with a size other than 1 or 4.  */   \
+      if (sizeof (__value) != 8)					      \
+	/* There should not be any value with a size other than 1, 4 or 8.  */\
 	abort ();							      \
 									      \
-      __asm__ __volatile__ ("movl %0,%%gs:%P1" :			      \
-			    : "r" (__value),				      \
+      __asm__ __volatile__ ("movl %%eax,%%gs:%P1\n\n"			      \
+			    "movl %%edx,%%gs:%P2" :			      \
+			    : "A" (__value),				      \
 			      "i" (offsetof (struct _pthread_descr_struct,    \
-					     member)));			      \
+					     member)),			      \
+			      "i" (offsetof (struct _pthread_descr_struct,    \
+					     member) + 4));		      \
     }									      \
 })
 
@@ -157,14 +179,20 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t);
 			  : "q" (__value),				      \
 			    "r" (offsetof (struct _pthread_descr_struct,      \
 					   member)));			      \
+  else if (sizeof (__value) == 4)					      \
+    __asm__ __volatile__ ("movl %0,%%gs:(%1)" :				      \
+			  : "r" (__value),				      \
+			    "r" (offsetof (struct _pthread_descr_struct,      \
+					   member)));			      \
   else									      \
     {									      \
-      if (sizeof (__value) != 4)					      \
-	/* There should not be any value with a size other than 1 or 4.  */   \
+      if (sizeof (__value) != 8)					      \
+	/* There should not be any value with a size other than 1, 4 or 8.  */\
 	abort ();							      \
 									      \
-      __asm__ __volatile__ ("movl %0,%%gs:(%1)" :			      \
-			    : "r" (__value),				      \
+      __asm__ __volatile__ ("movl %%eax,%%gs:(%1)\n\t"			      \
+			    "movl %%edx,%%gs:4(%1)" :			      \
+			    : "A" (__value),				      \
 			      "r" (offsetof (struct _pthread_descr_struct,    \
 					     member)));			      \
     }									      \