| Revision 18191,
1.5 KB
checked in by ghudson, 22 years ago
(diff) |
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This commit was generated by cvs2svn to compensate for changes in r18190,
which included commits to RCS files with non-trunk default branches.
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| 1 | dnl x86 pentium time stamp counter access routine. |
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| 2 | |
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| 3 | dnl Copyright 1999, 2000 Free Software Foundation, Inc. |
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| 4 | dnl |
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| 5 | dnl This file is part of the GNU MP Library. |
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| 6 | dnl |
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| 7 | dnl The GNU MP Library is free software; you can redistribute it and/or |
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| 8 | dnl modify it under the terms of the GNU Lesser General Public License as |
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| 9 | dnl published by the Free Software Foundation; either version 2.1 of the |
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| 10 | dnl License, or (at your option) any later version. |
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| 11 | dnl |
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| 12 | dnl The GNU MP Library is distributed in the hope that it will be useful, |
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| 13 | dnl but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | dnl Lesser General Public License for more details. |
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| 16 | dnl |
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| 17 | dnl You should have received a copy of the GNU Lesser General Public |
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| 18 | dnl License along with the GNU MP Library; see the file COPYING.LIB. If |
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| 19 | dnl not, write to the Free Software Foundation, Inc., 59 Temple Place - |
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| 20 | dnl Suite 330, Boston, MA 02111-1307, USA. |
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| 21 | |
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| 22 | |
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| 23 | include(`../config.m4') |
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| 24 | |
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| 25 | |
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| 26 | C void speed_cyclecounter (unsigned p[2]); |
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| 27 | C |
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| 28 | C Get the pentium rdtsc cycle counter, storing the least significant word in |
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| 29 | C p[0] and the most significant in p[1]. |
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| 30 | C |
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| 31 | C cpuid is used to serialize execution. On big measurements this won't be |
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| 32 | C significant but it may help make small single measurements more accurate. |
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| 33 | |
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| 34 | .text |
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| 35 | ALIGN(8) |
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| 36 | |
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| 37 | defframe(PARAM_P,4) |
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| 38 | |
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| 39 | PROLOGUE(speed_cyclecounter) |
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| 40 | deflit(`FRAME',0) |
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| 41 | pushl %ebx |
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| 42 | FRAME_pushl() |
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| 43 | xorl %eax, %eax |
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| 44 | cpuid |
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| 45 | rdtsc |
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| 46 | movl PARAM_P, %ebx |
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| 47 | movl %eax, (%ebx) |
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| 48 | movl %edx, 4(%ebx) |
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| 49 | popl %ebx |
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| 50 | ret |
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| 51 | EPILOGUE() |
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