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2004-03-17 Jakub Jelinek <jakub@redhat.com> * sysdeps/x86_64/hp-timing.h (HP_TIMING_NOW): Make asm volatile. 2004-03-16 Jakub Jelinek <jakub@redhat.com> * sysdeps/powerpc/powerpc32/fpu/__longjmp.S: Spelling. (JB_SIZE): Undefine before including __longjmp-common.S again. * sysdeps/powerpc/powerpc32/fpu/setjmp.S: Spelling. (JB_SIZE): Undefine before including setjmp-common.S again. * sysdeps/powerpc/powerpc64/bsd-_setjmp.S: Spelling. * sysdeps/powerpc/powerpc64/bsd-setjmp.S: Spelling. * sysdeps/powerpc/powerpc32/bsd-_setjmp.S: Spelling. * sysdeps/powerpc/powerpc32/bsd-setjmp.S: Spelling. * sysdeps/powerpc/sigjmp.c: Spelling.
38 lines
1.5 KiB
C
38 lines
1.5 KiB
C
/* High precision, low overhead timing functions. x86-64 version.
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Copyright (C) 2002, 2004 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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/* We can use some of the i686 implementation without changes. */
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# include <sysdeps/i386/i686/hp-timing.h>
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/* The "=A" constraint used in 32-bit mode does not work in 64-bit mode. */
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# undef HP_TIMING_NOW
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# define HP_TIMING_NOW(Var) \
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({ unsigned int _hi, _lo; \
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asm volatile ("rdtsc" : "=a" (_lo), "=d" (_hi)); \
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(Var) = ((unsigned long long int) _hi << 32) | _lo; })
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/* The funny business for 32-bit mode is not required here. */
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# undef HP_TIMING_ACCUM
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# define HP_TIMING_ACCUM(Sum, Diff) ((Sum) += (Diff))
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#endif /* hp-timing.h */
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