| dnl HP-PA mpn_rshift -- Shift a number right. |
| |
| dnl Copyright 1992, 1994, 2000-2002 Free Software Foundation, Inc. |
| |
| dnl This file is part of the GNU MP Library. |
| dnl |
| dnl The GNU MP Library is free software; you can redistribute it and/or modify |
| dnl it under the terms of either: |
| dnl |
| dnl * the GNU Lesser General Public License as published by the Free |
| dnl Software Foundation; either version 3 of the License, or (at your |
| dnl option) any later version. |
| dnl |
| dnl or |
| dnl |
| dnl * the GNU General Public License as published by the Free Software |
| dnl Foundation; either version 2 of the License, or (at your option) any |
| dnl later version. |
| dnl |
| dnl or both in parallel, as here. |
| dnl |
| 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 General Public License |
| dnl for more details. |
| dnl |
| dnl You should have received copies of the GNU General Public License and the |
| dnl GNU Lesser General Public License along with the GNU MP Library. If not, |
| dnl see https://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() |