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Annotation of OpenXM_contrib/gmp/tune/alpha.asm, Revision 1.1.1.1

1.1       maekawa     1: dnl  Alpha time stamp counter access routine.
                      2:
                      3: dnl  Copyright (C) 2000 Free Software Foundation, Inc.
                      4: dnl
                      5: dnl  This file is part of the GNU MP Library.
                      6: dnl
                      7: dnl  The GNU MP Library is free software; you can redistribute it and/or
                      8: dnl  modify it under the terms of the GNU Lesser General Public License as
                      9: dnl  published by the Free Software Foundation; either version 2.1 of the
                     10: dnl  License, or (at your option) any later version.
                     11: dnl
                     12: dnl  The GNU MP Library is distributed in the hope that it will be useful,
                     13: dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14: dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                     15: dnl  Lesser General Public License for more details.
                     16: dnl
                     17: dnl  You should have received a copy of the GNU Lesser General Public
                     18: dnl  License along with the GNU MP Library; see the file COPYING.LIB.  If
                     19: dnl  not, write to the Free Software Foundation, Inc., 59 Temple Place -
                     20: dnl  Suite 330, Boston, MA 02111-1307, USA.
                     21:
                     22: include(`../config.m4')
                     23:
                     24:
                     25: C void speed_cyclecounter (unsigned int p[2]);
                     26: C
                     27: C rpcc measures cycles elapsed in the user program and hence should be very
                     28: C accurate even on a busy system.  Losing cache contents due to task
                     29: C switching may have an effect though.
                     30:
                     31: ASM_START()
                     32: PROLOGUE(speed_cyclecounter)
                     33:        rpcc    r0
                     34:        stl     r0,0(r16)
                     35:        srl     r0,32,r0
                     36:        stl     r0,4(r16)
                     37:        ret     r31,(r26),1
                     38: EPILOGUE(speed_cyclecounter)
                     39: ASM_END()