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Annotation of OpenXM_contrib/gmp/mpn/powerpc64/submul_1.asm, Revision 1.1

1.1     ! maekawa     1: # PowerPC-64 mpn_submul_1 -- Multiply a limb vector with a limb and subtract
        !             2: # the result from a second limb vector.
        !             3:
        !             4: # Copyright (C) 1999, 2000 Free Software Foundation, Inc.
        !             5:
        !             6: # This file is part of the GNU MP Library.
        !             7:
        !             8: # The GNU MP Library is free software; you can redistribute it and/or modify
        !             9: # it under the terms of the GNU Lesser General Public License as published by
        !            10: # the Free Software Foundation; either version 2.1 of the License, or (at your
        !            11: # option) any later version.
        !            12:
        !            13: # The GNU MP Library is distributed in the hope that it will be useful, but
        !            14: # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            15: # or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
        !            16: # License for more details.
        !            17:
        !            18: # You should have received a copy of the GNU Lesser General Public License
        !            19: # along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            20: # the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            21: # MA 02111-1307, USA.
        !            22:
        !            23:
        !            24: # INPUT PARAMETERS
        !            25: # res_ptr      r3
        !            26: # s1_ptr       r4
        !            27: # size         r5
        !            28: # s2_limb      r6
        !            29:
        !            30: include(`../config.m4')
        !            31:
        !            32: ASM_START()
        !            33: PROLOGUE(mpn_submul_1)
        !            34:        mtctr   5
        !            35:        li      9,0             # cy_limb = 0
        !            36:        addic   0,0,0
        !            37:        cal     3,-8(3)
        !            38:        cal     4,-8(4)
        !            39: .Loop:
        !            40:        ldu     0,8(4)
        !            41:        ld      10,8(3)
        !            42:        mulld   7,0,6
        !            43:        adde    7,7,9
        !            44:        mulhdu  9,0,6
        !            45:        addze   9,9
        !            46:        subfc   7,7,10
        !            47:        stdu    7,8(3)
        !            48:        subfe   11,11,11        # invert ...
        !            49:        addic   11,11,1         # ... carry
        !            50:        bdnz    .Loop
        !            51:
        !            52:        addze   3,9
        !            53:        blr
        !            54: EPILOGUE(mpn_submul_1)