1dnl ARM64 mpn_com. 2 3dnl Copyright 2013, 2014 Free Software Foundation, Inc. 4 5dnl This file is part of the GNU MP Library. 6dnl 7dnl The GNU MP Library is free software; you can redistribute it and/or modify 8dnl it under the terms of either: 9dnl 10dnl * the GNU Lesser General Public License as published by the Free 11dnl Software Foundation; either version 3 of the License, or (at your 12dnl option) any later version. 13dnl 14dnl or 15dnl 16dnl * the GNU General Public License as published by the Free Software 17dnl Foundation; either version 2 of the License, or (at your option) any 18dnl later version. 19dnl 20dnl or both in parallel, as here. 21dnl 22dnl The GNU MP Library is distributed in the hope that it will be useful, but 23dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 24dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 25dnl for more details. 26dnl 27dnl You should have received copies of the GNU General Public License and the 28dnl GNU Lesser General Public License along with the GNU MP Library. If not, 29dnl see https://www.gnu.org/licenses/. 30 31include(`../config.m4') 32 33C cycles/limb 34C Cortex-A53 2.25 35C Cortex-A57 1.25 36C X-Gene 1.75 37 38changecom(blah) 39 40define(`rp', `x0') 41define(`up', `x1') 42define(`n', `x2') 43 44ASM_START() 45PROLOGUE(mpn_com) 46 cmp n, #3 47 b.le L(bc) 48 49C Copy until rp is 128-bit aligned 50 tbz rp, #3, L(al2) 51 ld1 {v22.1d}, [up], #8 52 sub n, n, #1 53 mvn v22.8b, v22.8b 54 st1 {v22.1d}, [rp], #8 55 56L(al2): ld1 {v26.2d}, [up], #16 57 subs n, n, #6 58 b.lt L(end) 59 60 ALIGN(16) 61L(top): ld1 {v22.2d}, [up], #16 62 mvn v26.16b, v26.16b 63 st1 {v26.2d}, [rp], #16 64 ld1 {v26.2d}, [up], #16 65 mvn v22.16b, v22.16b 66 st1 {v22.2d}, [rp], #16 67 subs n, n, #4 68 b.ge L(top) 69 70L(end): mvn v26.16b, v26.16b 71 st1 {v26.2d}, [rp], #16 72 73C Copy last 0-3 limbs. Note that rp is aligned after loop, but not when we 74C arrive here via L(bc) 75L(bc): tbz n, #1, L(tl1) 76 ld1 {v22.2d}, [up], #16 77 mvn v22.16b, v22.16b 78 st1 {v22.2d}, [rp], #16 79L(tl1): tbz n, #0, L(tl2) 80 ld1 {v22.1d}, [up] 81 mvn v22.8b, v22.8b 82 st1 {v22.1d}, [rp] 83L(tl2): ret 84EPILOGUE() 85