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Annotation of OpenXM_contrib/gmp/mpn/sparc64/copyd.asm, Revision 1.1

1.1     ! ohara       1: dnl  SPARC v9 mpn_copyd -- Copy a limb vector, decrementing.
        !             2:
        !             3: dnl  Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
        !             4:
        !             5: dnl  This file is part of the GNU MP Library.
        !             6:
        !             7: dnl  The GNU MP Library is free software; you can redistribute it and/or modify
        !             8: dnl  it under the terms of the GNU Lesser General Public License as published
        !             9: dnl  by the Free Software Foundation; either version 2.1 of the License, or (at
        !            10: dnl  your option) any later version.
        !            11:
        !            12: dnl  The GNU MP Library is distributed in the hope that it will be useful, but
        !            13: dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            14: dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
        !            15: dnl  License for more details.
        !            16:
        !            17: dnl  You should have received a copy of the GNU Lesser General Public License
        !            18: dnl  along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            19: dnl  the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            20: dnl  MA 02111-1307, USA.
        !            21:
        !            22: include(`../config.m4')
        !            23:
        !            24: C INPUT PARAMETERS
        !            25: C rptr %o0
        !            26: C sptr %o1
        !            27: C n            %o2
        !            28:
        !            29: C This code runs at 2 cycles/limb on UltraSPARC 1 and 2.
        !            30:
        !            31: ASM_START()
        !            32:        REGISTER(%g2,#scratch)
        !            33:        REGISTER(%g3,#scratch)
        !            34: PROLOGUE(mpn_copyd)
        !            35:        sllx    %o2,3,%g1
        !            36:        add     %g1,%o0,%o0
        !            37:        add     %g1,%o1,%o1
        !            38:        addcc   %o2,-8,%o2
        !            39:        bl,pt   %icc,L(end01234567)
        !            40:        nop
        !            41: L(loop1):
        !            42:        ldx     [%o1-8],%g1
        !            43:        ldx     [%o1-16],%g2
        !            44:        ldx     [%o1-24],%g3
        !            45:        ldx     [%o1-32],%g4
        !            46:        ldx     [%o1-40],%g5
        !            47:        ldx     [%o1-48],%o3
        !            48:        ldx     [%o1-56],%o4
        !            49:        ldx     [%o1-64],%o5
        !            50:        add     %o1,-64,%o1
        !            51:        stx     %g1,[%o0-8]
        !            52:        stx     %g2,[%o0-16]
        !            53:        stx     %g3,[%o0-24]
        !            54:        stx     %g4,[%o0-32]
        !            55:        stx     %g5,[%o0-40]
        !            56:        stx     %o3,[%o0-48]
        !            57:        stx     %o4,[%o0-56]
        !            58:        stx     %o5,[%o0-64]
        !            59:        addcc   %o2,-8,%o2
        !            60:        bge,pt  %icc,L(loop1)
        !            61:        add     %o0,-64,%o0
        !            62: L(end01234567):
        !            63:        addcc   %o2,8,%o2
        !            64:        bz,pn   %icc,L(end)
        !            65:        nop
        !            66: L(loop2):
        !            67:        ldx     [%o1-8],%g1
        !            68:        add     %o1,-8,%o1
        !            69:        addcc   %o2,-1,%o2
        !            70:        stx     %g1,[%o0-8]
        !            71:        bg,pt   %icc,L(loop2)
        !            72:        add     %o0,-8,%o0
        !            73: L(end):        retl
        !            74:        nop
        !            75: EPILOGUE(mpn_copyd)