| Austin Schuh | bb1338c | 2024-06-15 19:31:16 -0700 | [diff] [blame] | 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() |