rshift.asm
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上传日期:2022-08-06
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- dnl HP-PA mpn_rshift -- Shift a number right.
- dnl Copyright 1992, 1994, 2000, 2001, 2002 Free Software Foundation, Inc.
- dnl This file is part of the GNU MP Library.
- dnl The GNU MP Library is free software; you can redistribute it and/or modify
- dnl it under the terms of the GNU Lesser General Public License as published
- dnl by the Free Software Foundation; either version 3 of the License, or (at
- dnl your option) any later version.
- dnl The GNU MP Library is distributed in the hope that it will be useful, but
- dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
- dnl License for more details.
- dnl You should have received a copy of the GNU Lesser General Public License
- dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
- include(`../config.m4')
- C INPUT PARAMETERS
- C res_ptr gr26
- C s_ptr gr25
- C size gr24
- C cnt gr23
- ASM_START()
- PROLOGUE(mpn_rshift)
- ldws,ma 4(0,%r25),%r22
- mtsar %r23
- addib,= -1,%r24,L(0004)
- vshd %r22,%r0,%r28 C compute carry out limb
- ldws,ma 4(0,%r25),%r29
- addib,= -1,%r24,L(0002)
- vshd %r29,%r22,%r20
- LDEF(loop)
- ldws,ma 4(0,%r25),%r22
- stws,ma %r20,4(0,%r26)
- addib,= -1,%r24,L(0003)
- vshd %r22,%r29,%r20
- ldws,ma 4(0,%r25),%r29
- stws,ma %r20,4(0,%r26)
- addib,<> -1,%r24,L(loop)
- vshd %r29,%r22,%r20
- LDEF(0002)
- stws,ma %r20,4(0,%r26)
- vshd %r0,%r29,%r20
- bv 0(%r2)
- stw %r20,0(0,%r26)
- LDEF(0003)
- stws,ma %r20,4(0,%r26)
- LDEF(0004)
- vshd %r0,%r22,%r20
- bv 0(%r2)
- stw %r20,0(0,%r26)
- EPILOGUE()