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authorUlrich Drepper <drepper@redhat.com>2001-04-21 07:55:01 +0000
committerUlrich Drepper <drepper@redhat.com>2001-04-21 07:55:01 +0000
commit5fc48cd78f0c50e889d1c1f3b8f812058db71ecd (patch)
tree97c81fc8d9405b4f9228f2a76282017e887d8b13 /linuxthreads/sysdeps/i386
parentb17c0a8e31fe9e99359b6a874008de7aba85d64e (diff)
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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.
Diffstat (limited to 'linuxthreads/sysdeps/i386')
-rw-r--r--linuxthreads/sysdeps/i386/i586/Makefile3
-rw-r--r--linuxthreads/sysdeps/i386/i586/Versions5
-rw-r--r--linuxthreads/sysdeps/i386/i586/ptclock_gettime.c45
-rw-r--r--linuxthreads/sysdeps/i386/i586/ptclock_settime.c32
-rw-r--r--linuxthreads/sysdeps/i386/i686/Implies1
-rw-r--r--linuxthreads/sysdeps/i386/useldt.h66
6 files changed, 133 insertions, 19 deletions
diff --git a/linuxthreads/sysdeps/i386/i586/Makefile b/linuxthreads/sysdeps/i386/i586/Makefile
new file mode 100644
index 0000000000..96c195f6e5
--- /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 0000000000..f9921aff55
--- /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 0000000000..818251074e
--- /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 0000000000..3026528cc2
--- /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 0000000000..0df509e35f
--- /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 ebf520cc39..b9566ace1f 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))); \
} \