Home | History | Annotate | Line # | Download | only in pa32 
      1 dnl  HP-PA  mpn_rshift -- Shift a number right.
      2 
      3 dnl  Copyright 1992, 1994, 2000-2002 Free Software Foundation, Inc.
      4 
      5 dnl  This file is part of the GNU MP Library.
      6 dnl
      7 dnl  The GNU MP Library is free software; you can redistribute it and/or modify
      8 dnl  it under the terms of either:
      9 dnl
     10 dnl    * the GNU Lesser General Public License as published by the Free
     11 dnl      Software Foundation; either version 3 of the License, or (at your
     12 dnl      option) any later version.
     13 dnl
     14 dnl  or
     15 dnl
     16 dnl    * the GNU General Public License as published by the Free Software
     17 dnl      Foundation; either version 2 of the License, or (at your option) any
     18 dnl      later version.
     19 dnl
     20 dnl  or both in parallel, as here.
     21 dnl
     22 dnl  The GNU MP Library is distributed in the hope that it will be useful, but
     23 dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
     24 dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     25 dnl  for more details.
     26 dnl
     27 dnl  You should have received copies of the GNU General Public License and the
     28 dnl  GNU Lesser General Public License along with the GNU MP Library.  If not,
     29 dnl  see https://www.gnu.org/licenses/.
     30 
     31 include(`../config.m4')
     32 
     33 C INPUT PARAMETERS
     34 C res_ptr	gr26
     35 C s_ptr		gr25
     36 C size		gr24
     37 C cnt		gr23
     38 
     39 ASM_START()
     40 PROLOGUE(mpn_rshift)
     41 	ldws,ma		4(0,%r25),%r22
     42 	mtsar		%r23
     43 	addib,=		-1,%r24,L(0004)
     44 	vshd		%r22,%r0,%r28		C compute carry out limb
     45 	ldws,ma		4(0,%r25),%r29
     46 	addib,=		-1,%r24,L(0002)
     47 	vshd		%r29,%r22,%r20
     48 
     49 LDEF(loop)
     50 	ldws,ma		4(0,%r25),%r22
     51 	stws,ma		%r20,4(0,%r26)
     52 	addib,=		-1,%r24,L(0003)
     53 	vshd		%r22,%r29,%r20
     54 	ldws,ma		4(0,%r25),%r29
     55 	stws,ma		%r20,4(0,%r26)
     56 	addib,<>	-1,%r24,L(loop)
     57 	vshd		%r29,%r22,%r20
     58 
     59 LDEF(0002)
     60 	stws,ma		%r20,4(0,%r26)
     61 	vshd		%r0,%r29,%r20
     62 	bv		0(%r2)
     63 	stw		%r20,0(0,%r26)
     64 
     65 LDEF(0003)
     66 	stws,ma		%r20,4(0,%r26)
     67 
     68 LDEF(0004)
     69 	vshd		%r0,%r22,%r20
     70 	bv		0(%r2)
     71 	stw		%r20,0(0,%r26)
     72 EPILOGUE()
     73