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Annotation of OpenXM_contrib/gmp/mpn/pa32/lshift.asm, Revision 1.1.1.1

1.1       ohara       1: dnl  HP-PA  mpn_lshift -- Shift a number left.
                      2:
                      3: dnl  Copyright 1992, 1994, 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 res_ptr      gr26
                     26: C s_ptr                gr25
                     27: C size         gr24
                     28: C cnt          gr23
                     29:
                     30: ASM_START()
                     31: PROLOGUE(mpn_lshift)
                     32:        sh2add          %r24,%r25,%r25
                     33:        sh2add          %r24,%r26,%r26
                     34:        ldws,mb         -4(0,%r25),%r22
                     35:        subi            32,%r23,%r1
                     36:        mtsar           %r1
                     37:        addib,=         -1,%r24,L(0004)
                     38:        vshd            %r0,%r22,%r28           C compute carry out limb
                     39:        ldws,mb         -4(0,%r25),%r29
                     40:        addib,=         -1,%r24,L(0002)
                     41:        vshd            %r22,%r29,%r20
                     42:
                     43:        .label  L(loop)
                     44:        ldws,mb         -4(0,%r25),%r22
                     45:        stws,mb         %r20,-4(0,%r26)
                     46:        addib,=         -1,%r24,L(0003)
                     47:        vshd            %r29,%r22,%r20
                     48:        ldws,mb         -4(0,%r25),%r29
                     49:        stws,mb         %r20,-4(0,%r26)
                     50:        addib,<>        -1,%r24,L(loop)
                     51:        vshd            %r22,%r29,%r20
                     52:
                     53:        .label  L(0002)
                     54:        stws,mb         %r20,-4(0,%r26)
                     55:        vshd            %r29,%r0,%r20
                     56:        bv              0(%r2)
                     57:        stw             %r20,-4(0,%r26)
                     58:
                     59:        .label  L(0003)
                     60:        stws,mb         %r20,-4(0,%r26)
                     61:
                     62:        .label  L(0004)
                     63:        vshd            %r22,%r0,%r20
                     64:        bv              0(%r2)
                     65:        stw             %r20,-4(0,%r26)
                     66: EPILOGUE()