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Tom Gall <tom_gall@vnet.ibm.com> * elf/rtld.c (dl_main): Initialize l_local_scope for sysinfo_map. * sysdeps/powerpc/elf/libc-start.c: Move this... * sysdeps/unix/sysv/linux/powerpc/libc-start.c: ...to here. * sysdeps/powerpc/powerpc32/dl-start.S: Add _dl_main_dispatch label. * sysdeps/powerpc/powerpc32/hp-timing.h: New file. * sysdeps/unix/sysv/linux/powerpc/Versions: New file. * sysdeps/unix/sysv/linux/clock_getres.c: If HAVE_CLOCK_GETRES_VSYSCALL is not defined, redefine INTERNAL_VSYSCALL and INLINE_VSYSCALL to INTERNAL_SYSCALL and INLINE_SYSCALL respectively. Otherwise include <bits/libc-vdso.h>. Use INLINE_VSYSCALL and INTERNAL_SYSCALL instead of the normal versions throughout the code. * sysdeps/unix/sysv/linux/clock_gettime.c: Likewise if HAVE_CLOCK_GETTIME_VSYSCALL is defined. * sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h: New file. * sysdeps/unix/sysv/linux/powerpc/dl-vdso.c: New file. * sysdeps/unix/sysv/linux/powerpc/dl-vdso.h: New file. * sysdeps/unix/sysv/linux/powerpc/get_clockfreq.c: Use vDSO. * sysdeps/unix/sysv/linux/powerpc/gettimeofday.c: New file. * sysdeps/unix/sysv/linux/powerpc/Makefile: Add dl-vdso to routines. * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h: Define INLINE_VSYSCALL, INTERNAL_VSYSCALL, INTERNAL_SYSCALL_NCS, INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK, HAVE_CLOCK_GETRES_VSYSCALL, and HAVE_CLOCK_GETTIME_VSYSCALL. * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: Likewise.
83 lines
3.1 KiB
C
83 lines
3.1 KiB
C
/* High precision, low overhead timing functions. Linux/PPC32 version.
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _HP_TIMING_H
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#define _HP_TIMING_H 1
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/* There are no generic definitions for the times. We could write something
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using the `gettimeofday' system call where available but the overhead of
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the system call might be too high.
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In case a platform supports timers in the hardware the following macros
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and types must be defined:
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- HP_TIMING_AVAIL: test for availability.
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- HP_TIMING_INLINE: this macro is non-zero if the functionality is not
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implemented using function calls but instead uses some inlined code
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which might simply consist of a few assembler instructions. We have to
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know this since we might want to use the macros here in places where we
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cannot make function calls.
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- hp_timing_t: This is the type for variables used to store the time
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values.
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- HP_TIMING_ZERO: clear `hp_timing_t' object.
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- HP_TIMING_NOW: place timestamp for current time in variable given as
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parameter.
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- HP_TIMING_DIFF_INIT: do whatever is necessary to be able to use the
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HP_TIMING_DIFF macro.
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- HP_TIMING_DIFF: compute difference between two times and store it
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in a third. Source and destination might overlap.
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- HP_TIMING_ACCUM: add time difference to another variable. This might
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be a bit more complicated to implement for some platforms as the
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operation should be thread-safe and 64bit arithmetic on 32bit platforms
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is not.
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- HP_TIMING_ACCUM_NT: this is the variant for situations where we know
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there are no threads involved.
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- HP_TIMING_PRINT: write decimal representation of the timing value into
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the given string. This operation need not be inline even though
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HP_TIMING_INLINE is specified.
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*/
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/* Provide dummy definitions. */
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#define HP_TIMING_AVAIL (0)
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#define HP_TIMING_INLINE (0)
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typedef unsigned long long int hp_timing_t;
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#define HP_TIMING_ZERO(Var)
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#define HP_TIMING_NOW(var)
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#define HP_TIMING_DIFF_INIT()
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#define HP_TIMING_DIFF(Diff, Start, End)
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#define HP_TIMING_ACCUM(Sum, Diff)
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#define HP_TIMING_ACCUM_NT(Sum, Diff)
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#define HP_TIMING_PRINT(Buf, Len, Val)
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/* Since this implementation is not available we tell the user about it. */
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#define HP_TIMING_NONAVAIL 1
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#endif /* hp-timing.h */
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