| Austin Schuh | dace2a6 | 2020-08-18 10:56:48 -0700 | [diff] [blame] | 1 | dnl PowerPC-64 mpn_copyi. |
| 2 | |
| 3 | dnl Copyright 2004, 2005 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 cycles/limb |
| 34 | C POWER3/PPC630 1 |
| 35 | C POWER4/PPC970 1 |
| 36 | C POWER5 ? |
| 37 | C POWER6 ? |
| 38 | C POWER7 1.4 |
| 39 | |
| 40 | C INPUT PARAMETERS |
| 41 | C rp r3 |
| 42 | C up r4 |
| 43 | C n r5 |
| 44 | |
| 45 | ASM_START() |
| 46 | PROLOGUE(mpn_copyi) |
| 47 | rldic. r0, r5, 3, 59 C r0 = (r5 & 3) << 3; cr0 = (n == 4t)? |
| 48 | cmpldi cr6, r0, 16 C cr6 = (n cmp 4t + 2)? |
| 49 | |
| 50 | addi r5, r5, 4 C compute... |
| 51 | ifdef(`HAVE_ABI_mode32', |
| 52 | ` rldicl r5, r5, 62,34', C ...branch count |
| 53 | ` rldicl r5, r5, 62, 2') C ...branch count |
| 54 | mtctr r5 |
| 55 | |
| 56 | add r4, r4, r0 C offset up |
| 57 | add r3, r3, r0 C offset rp |
| 58 | |
| 59 | beq cr0, L(L00) |
| 60 | blt cr6, L(L01) |
| 61 | beq cr6, L(L10) |
| 62 | b L(L11) |
| 63 | |
| 64 | ALIGN(16) |
| 65 | L(oop): ld r6, -32(r4) |
| 66 | std r6, -32(r3) |
| 67 | L(L11): ld r6, -24(r4) |
| 68 | std r6, -24(r3) |
| 69 | L(L10): ld r6, -16(r4) |
| 70 | std r6, -16(r3) |
| 71 | L(L01): ld r6, -8(r4) |
| 72 | std r6, -8(r3) |
| 73 | L(L00): addi r4, r4, 32 |
| 74 | addi r3, r3, 32 |
| 75 | bdnz L(oop) |
| 76 | |
| 77 | blr |
| 78 | EPILOGUE() |