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Annotation of OpenXM_contrib/gmp/mpn/pa32/hppa1_1/pa7100/rshift.asm, Revision 1.1

1.1     ! ohara       1: dnl  HP-PA  mpn_rshift -- Shift a number right.
        !             2: dnl  Optimized for the PA7100, where is runs at 3.25 cycles/limb.
        !             3:
        !             4: dnl  Copyright 1992, 1994, 2000, 2001, 2002 Free Software Foundation, Inc.
        !             5:
        !             6: dnl  This file is part of the GNU MP Library.
        !             7:
        !             8: dnl  The GNU MP Library is free software; you can redistribute it and/or modify
        !             9: dnl  it under the terms of the GNU Lesser General Public License as published
        !            10: dnl  by the Free Software Foundation; either version 2.1 of the License, or (at
        !            11: dnl  your option) any later version.
        !            12:
        !            13: dnl  The GNU MP Library is distributed in the hope that it will be useful, but
        !            14: dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            15: dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
        !            16: dnl  License for more details.
        !            17:
        !            18: dnl  You should have received a copy of the GNU Lesser General Public License
        !            19: dnl  along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            20: dnl  the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            21: dnl  MA 02111-1307, USA.
        !            22:
        !            23: include(`../config.m4')
        !            24:
        !            25: C INPUT PARAMETERS
        !            26: C res_ptr      r26
        !            27: C s_ptr                r25
        !            28: C size         r24
        !            29: C cnt          r23
        !            30:
        !            31: ASM_START()
        !            32: PROLOGUE(mpn_rshift)
        !            33:        ldws,ma         4(0,%r25),%r22
        !            34:        mtsar           %r23
        !            35:        addib,=         -1,%r24,L(0004)
        !            36:        vshd            %r22,%r0,%r28           C compute carry out limb
        !            37:        ldws,ma         4(0,%r25),%r29
        !            38:        addib,<=        -5,%r24,L(rest)
        !            39:        vshd            %r29,%r22,%r20
        !            40:
        !            41:        .label  L(loop)
        !            42:        ldws,ma         4(0,%r25),%r22
        !            43:        stws,ma         %r20,4(0,%r26)
        !            44:        vshd            %r22,%r29,%r20
        !            45:        ldws,ma         4(0,%r25),%r29
        !            46:        stws,ma         %r20,4(0,%r26)
        !            47:        vshd            %r29,%r22,%r20
        !            48:        ldws,ma         4(0,%r25),%r22
        !            49:        stws,ma         %r20,4(0,%r26)
        !            50:        vshd            %r22,%r29,%r20
        !            51:        ldws,ma         4(0,%r25),%r29
        !            52:        stws,ma         %r20,4(0,%r26)
        !            53:        addib,>         -4,%r24,L(loop)
        !            54:        vshd            %r29,%r22,%r20
        !            55:
        !            56:        .label  L(rest)
        !            57:        addib,=         4,%r24,L(end1)
        !            58:        nop
        !            59:
        !            60:        .label  L(eloop)
        !            61:        ldws,ma         4(0,%r25),%r22
        !            62:        stws,ma         %r20,4(0,%r26)
        !            63:        addib,<=        -1,%r24,L(end2)
        !            64:        vshd            %r22,%r29,%r20
        !            65:        ldws,ma         4(0,%r25),%r29
        !            66:        stws,ma         %r20,4(0,%r26)
        !            67:        addib,>         -1,%r24,L(eloop)
        !            68:        vshd            %r29,%r22,%r20
        !            69:
        !            70:        .label  L(end1)
        !            71:        stws,ma         %r20,4(0,%r26)
        !            72:        vshd            %r0,%r29,%r20
        !            73:        bv              0(%r2)
        !            74:        stw             %r20,0(0,%r26)
        !            75:
        !            76:        .label  L(end2)
        !            77:        stws,ma         %r20,4(0,%r26)
        !            78:
        !            79:        .label  L(0004)
        !            80:        vshd            %r0,%r22,%r20
        !            81:        bv              0(%r2)
        !            82:        stw             %r20,0(0,%r26)
        !            83: EPILOGUE()