Without HP_TIMING_ACCUM, dl_hp_timing_overhead is write-only.
If we remove it, there's no point in HP_TIMING_DIFF_INIT either.
unsigned int seed;
size_t page_size;
-hp_timing_t _dl_hp_timing_overhead;
-
# ifndef ITERATIONS
size_t iterations = 100000;
# define ITERATIONS_OPTIONS \
#if HP_TIMING_AVAIL && !defined USE_CLOCK_GETTIME
# define GL(x) _##x
# define GLRO(x) _##x
-hp_timing_t _dl_hp_timing_overhead;
typedef hp_timing_t timing_t;
# define TIMING_TYPE "hp_timing"
-# define TIMING_INIT(res) \
-({ \
- HP_TIMING_DIFF_INIT(); \
- (res) = 1; \
-})
+# define TIMING_INIT(res) ({ (res) = 1; })
# define TIMING_NOW(var) HP_TIMING_NOW (var)
# define TIMING_DIFF(diff, start, end) HP_TIMING_DIFF ((diff), (start), (end))
else
start_time = info->start_time;
#endif
-
- /* Initialize the timing functions. */
- HP_TIMING_DIFF_INIT ();
}
/* Transfer data about ourselves to the permanent link_map structure. */
- HP_TIMING_NOW: place timestamp for current time in variable given as
parameter.
- - HP_TIMING_DIFF_INIT: do whatever is necessary to be able to use the
- HP_TIMING_DIFF macro.
-
- HP_TIMING_DIFF: compute difference between two times and store it
in a third. Source and destination might overlap.
(VAR) = (int) (x_) - (int) (x_ >> 32); \
} while (0)
-/* ??? Two rpcc instructions can be scheduled simultaneously. */
-#define HP_TIMING_DIFF_INIT() do { } while (0)
-
/* It's simple arithmetic for us. */
#define HP_TIMING_DIFF(Diff, Start, End) (Diff) = ((End) - (Start))
- HP_TIMING_NOW: place timestamp for current time in variable given as
parameter.
- - HP_TIMING_DIFF_INIT: do whatever is necessary to be able to use the
- HP_TIMING_DIFF macro.
-
- HP_TIMING_DIFF: compute difference between two times and store it
in a third. Source and destination might overlap.
#define HP_TIMING_INLINE (0)
typedef int hp_timing_t;
#define HP_TIMING_NOW(var)
-#define HP_TIMING_DIFF_INIT()
#define HP_TIMING_DIFF(Diff, Start, End)
#define HP_TIMING_ACCUM_NT(Sum, Diff)
#define HP_TIMING_PRINT(Buf, Len, Val)
/* All search directories defined at startup. */
EXTERN struct r_search_path_elem *_dl_init_all_dirs;
-#if HP_TIMING_AVAIL || HP_SMALL_TIMING_AVAIL
- /* Overhead of a high-precision timing measurement. */
- EXTERN hp_timing_t _dl_hp_timing_overhead;
-#endif
-
#ifdef NEED_DL_SYSINFO
/* Syscall handling improvements. This is very specific to x86. */
EXTERN uintptr_t _dl_sysinfo;
-ifeq ($(subdir),csu)
-sysdep_routines += hp-timing
-elide-routines.os += hp-timing
-endif
-
# So that we can test __m128's alignment
stack-align-test-flags += -msse
+++ /dev/null
-/* Support for high precision, low overhead timing functions. i686 version.
- Copyright (C) 1998-2014 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <hp-timing.h>
-
-/* We have to define the variable for the overhead. */
-hp_timing_t _dl_hp_timing_overhead;
- HP_TIMING_NOW: place timestamp for current time in variable given as
parameter.
- - HP_TIMING_DIFF_INIT: do whatever is necessary to be able to use the
- HP_TIMING_DIFF macro.
-
- HP_TIMING_DIFF: compute difference between two times and store it
in a third. Source and destination might overlap.
in accurate clock cycles here so we don't do this. */
#define HP_TIMING_NOW(Var) __asm__ __volatile__ ("rdtsc" : "=A" (Var))
-/* Use two 'rdtsc' instructions in a row to find out how long it takes. */
-#define HP_TIMING_DIFF_INIT() \
- do { \
- if (GLRO(dl_hp_timing_overhead) == 0) \
- { \
- int __cnt = 5; \
- GLRO(dl_hp_timing_overhead) = ~0ull; \
- do \
- { \
- hp_timing_t __t1, __t2; \
- HP_TIMING_NOW (__t1); \
- HP_TIMING_NOW (__t2); \
- if (__t2 - __t1 < GLRO(dl_hp_timing_overhead)) \
- GLRO(dl_hp_timing_overhead) = __t2 - __t1; \
- } \
- while (--__cnt > 0); \
- } \
- } while (0)
-
/* It's simple arithmetic for us. */
#define HP_TIMING_DIFF(Diff, Start, End) (Diff) = ((End) - (Start))
ifeq ($(subdir), csu)
CPPFLAGS-start.S = -D__ASSEMBLY__
-sysdep_routines += hp-timing
-elide-routines.os += hp-timing
ifeq (yes,$(build-shared))
# Compatibility
+++ /dev/null
-/* Support for high precision, low overhead timing functions. IA-64 version.
- Copyright (C) 2001-2014 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 2001.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <hp-timing.h>
-
-/* We have to define the variable for the overhead. */
-hp_timing_t _dl_hp_timing_overhead;
- HP_TIMING_NOW: place timestamp for current time in variable given as
parameter.
- - HP_TIMING_DIFF_INIT: do whatever is necessary to be able to use the
- HP_TIMING_DIFF macro.
-
- HP_TIMING_DIFF: compute difference between two times and store it
in a third. Source and destination might overlap.
while (REPEAT_READ (__itc)); \
Var = __itc; })
-/* Use two 'ar.itc' instructions in a row to find out how long it takes. */
-#define HP_TIMING_DIFF_INIT() \
- do { \
- int __cnt = 5; \
- GLRO(dl_hp_timing_overhead) = ~0ul; \
- do \
- { \
- hp_timing_t __t1, __t2; \
- HP_TIMING_NOW (__t1); \
- HP_TIMING_NOW (__t2); \
- if (__t2 - __t1 < GLRO(dl_hp_timing_overhead)) \
- GLRO(dl_hp_timing_overhead) = __t2 - __t1; \
- } \
- while (--__cnt > 0); \
- } while (0)
-
/* It's simple arithmetic for us. */
#define HP_TIMING_DIFF(Diff, Start, End) (Diff) = ((End) - (Start))
+++ /dev/null
-/* Support for high precision, low overhead timing functions.
- powerpc64 version.
- Copyright (C) 2005-2014 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <hp-timing.h>
-
-/* We have to define the variable for the overhead. */
-hp_timing_t _dl_hp_timing_overhead;
- HP_TIMING_NOW: place timestamp for current time in variable given as
parameter.
- - HP_TIMING_DIFF_INIT: do whatever is necessary to be able to use the
- HP_TIMING_DIFF macro.
-
- HP_TIMING_DIFF: compute difference between two times and store it
in a third. Source and destination might overlap.
Var = ((hp_timing_t) hi << 32) | lo; \
} while (0)
-
-/* Use two 'mftb' instructions in a row to find out how long it takes.
- On current POWER4, POWER5, and 970 processors mftb take ~10 cycles. */
-#define HP_TIMING_DIFF_INIT() \
- do { \
- if (GLRO(dl_hp_timing_overhead) == 0) \
- { \
- int __cnt = 5; \
- GLRO(dl_hp_timing_overhead) = ~0ull; \
- do \
- { \
- hp_timing_t __t1, __t2; \
- HP_TIMING_NOW (__t1); \
- HP_TIMING_NOW (__t2); \
- if (__t2 - __t1 < GLRO(dl_hp_timing_overhead)) \
- GLRO(dl_hp_timing_overhead) = __t2 - __t1; \
- } \
- while (--__cnt > 0); \
- } \
- } while (0)
-
/* It's simple arithmetic in 64-bit. */
#define HP_TIMING_DIFF(Diff, Start, End) (Diff) = ((End) - (Start))
CFLAGS-rtld-memchr.os = $(no-special-regs)
CFLAGS-rtld-strnlen.os = $(no-special-regs)
-ifeq ($(subdir),csu)
-sysdep_routines += hp-timing
-elide-routines.os += hp-timing
-endif
-
ifeq ($(subdir),elf)
# help gcc inline asm code from dl-machine.h
+cflags += -finline-limit=2000
+++ /dev/null
-/* Support for high precision, low overhead timing functions.
- powerpc64 version.
- Copyright (C) 2005-2014 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <hp-timing.h>
-
-/* We have to define the variable for the overhead. */
-hp_timing_t _dl_hp_timing_overhead;
- HP_TIMING_NOW: place timestamp for current time in variable given as
parameter.
- - HP_TIMING_DIFF_INIT: do whatever is necessary to be able to use the
- HP_TIMING_DIFF macro.
-
- HP_TIMING_DIFF: compute difference between two times and store it
in a third. Source and destination might overlap.
#define HP_TIMING_NOW(Var) __asm__ __volatile__ ("mftb %0" : "=r" (Var))
#endif
-/* Use two 'mftb' instructions in a row to find out how long it takes.
- On current POWER4, POWER5, and 970 processors mftb take ~10 cycles. */
-#define HP_TIMING_DIFF_INIT() \
- do { \
- if (GLRO(dl_hp_timing_overhead) == 0) \
- { \
- int __cnt = 5; \
- GLRO(dl_hp_timing_overhead) = ~0ull; \
- do \
- { \
- hp_timing_t __t1, __t2; \
- HP_TIMING_NOW (__t1); \
- HP_TIMING_NOW (__t2); \
- if (__t2 - __t1 < GLRO(dl_hp_timing_overhead)) \
- GLRO(dl_hp_timing_overhead) = __t2 - __t1; \
- } \
- while (--__cnt > 0); \
- } \
- } while (0)
-
/* It's simple arithmetic in 64-bit. */
#define HP_TIMING_DIFF(Diff, Start, End) (Diff) = ((End) - (Start))
sysdep-CFLAGS += -mcpu=ultrasparc -Wa,-Av9a
-ifeq ($(subdir),csu)
-sysdep_routines += hp-timing
-elide-routines.os += hp-timing
-endif
-
ifeq ($(have-as-vis3),yes)
ASFLAGS-.o += -Wa,-Av9d
ASFLAGS-.os += -Wa,-Av9d
+++ /dev/null
-/* Support for high precision, low overhead timing functions. sparcv9 version.
- Copyright (C) 2001-2014 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by David S. Miller <davem@redhat.com>, 2001.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <hp-timing.h>
-
-/* We have to define the variable for the overhead. */
-hp_timing_t _dl_hp_timing_overhead;
"srlx %L0, 32, %H0" \
: "=r" (Var))
-#define HP_TIMING_DIFF_INIT() \
- do { \
- int __cnt = 5; \
- GLRO(dl_hp_timing_overhead) = ~0ull; \
- do \
- { \
- hp_timing_t __t1, __t2; \
- HP_TIMING_NOW (__t1); \
- HP_TIMING_NOW (__t2); \
- if (__t2 - __t1 < GLRO(dl_hp_timing_overhead)) \
- GLRO(dl_hp_timing_overhead) = __t2 - __t1; \
- } \
- while (--__cnt > 0); \
- } while (0)
-
#define HP_TIMING_DIFF(Diff, Start, End) (Diff) = ((End) - (Start))
#define HP_TIMING_ACCUM_NT(Sum, Diff) (Sum) += (Diff)
-ifeq ($(subdir),csu)
-sysdep_routines += hp-timing
-elide-routines.os += hp-timing
-endif
-
ifeq ($(subdir),string)
sysdep_routines += align-cpy
endif
+++ /dev/null
-/* Support for high precision, low overhead timing functions. sparc64 version.
- Copyright (C) 2001-2014 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by David S. Miller <davem@redhat.com>, 2001.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <hp-timing.h>
-
-/* We have to define the variable for the overhead. */
-hp_timing_t _dl_hp_timing_overhead;
#define HP_TIMING_NOW(Var) __asm__ __volatile__ ("rd %%tick, %0" : "=r" (Var))
-#define HP_TIMING_DIFF_INIT() \
- do { \
- int __cnt = 5; \
- GLRO(dl_hp_timing_overhead) = ~0ull; \
- do \
- { \
- hp_timing_t __t1, __t2; \
- HP_TIMING_NOW (__t1); \
- HP_TIMING_NOW (__t2); \
- if (__t2 - __t1 < GLRO(dl_hp_timing_overhead)) \
- GLRO(dl_hp_timing_overhead) = __t2 - __t1; \
- } \
- while (--__cnt > 0); \
- } while (0)
-
#define HP_TIMING_DIFF(Diff, Start, End) (Diff) = ((End) - (Start))
#define HP_TIMING_ACCUM_NT(Sum, Diff) (Sum) += (Diff)
long-double-fcts = yes
ifeq ($(subdir),csu)
-sysdep_routines += hp-timing
-elide-routines.os += hp-timing
gen-as-const-headers += link-defines.sym
endif
+++ /dev/null
-/* We can use the i686 implementation without changes. */
-#include <sysdeps/i386/i686/hp-timing.c>
git://sourceware.org / glibc.git / commitdiff