diff options
Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/copyi.asm')
-rw-r--r-- | Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/copyi.asm | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/copyi.asm b/Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/copyi.asm new file mode 100644 index 00000000000..8f7dbd4f520 --- /dev/null +++ b/Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/copyi.asm @@ -0,0 +1,77 @@ +dnl ARM64 mpn_copyi. + +dnl Copyright 2013 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 cycles/limb +C Cortex-A53 ? +C Cortex-A57 ? + +changecom(@&*$) + +define(`rp', `x0') +define(`up', `x1') +define(`n', `x2') + +ASM_START() +PROLOGUE(mpn_copyi) + cmp n, #3 + b.le L(bc) + +C Copy until rp is 128-bit aligned + tbz rp, #3, L(al2) + ld1 {v22.1d}, [up], #8 + sub n, n, #1 + st1 {v22.1d}, [rp], #8 + +L(al2): ld1 {v26.2d}, [up], #16 + subs n, n, #6 + b.lt L(end) + + ALIGN(16) +L(top): ld1 {v22.2d}, [up], #16 + st1 {v26.2d}, [rp], #16 + ld1 {v26.2d}, [up], #16 + st1 {v22.2d}, [rp], #16 + subs n, n, #4 + b.ge L(top) + +L(end): st1 {v26.2d}, [rp], #16 + +C Copy last 0-3 limbs. Note that rp is aligned after loop, but not when we +C arrive here via L(bc) +L(bc): tbz n, #1, L(tl1) + ld1 {v22.2d}, [up], #16 + st1 {v22.2d}, [rp], #16 +L(tl1): tbz n, #0, L(tl2) + ld1 {v22.1d}, [up] + st1 {v22.1d}, [rp] +L(tl2): ret +EPILOGUE() |