diff options
Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/mul_1.asm')
-rw-r--r-- | Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/mul_1.asm | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/mul_1.asm b/Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/mul_1.asm new file mode 100644 index 00000000000..c0c2570f0d8 --- /dev/null +++ b/Build/source/libs/gmp/gmp-6.0.0/mpn/arm64/mul_1.asm @@ -0,0 +1,98 @@ +dnl ARM64 mpn_mul_1 + +dnl Contributed to the GNU project by Torbjörn Granlund. + +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 ? + +define(`rp', `x0') +define(`up', `x1') +define(`n', `x2') +define(`v0', `x3') + +ASM_START() +PROLOGUE(mpn_mul_1) + ldr x12, [up], #8 + and x6, n, #3 + and n, n, #-4 + cbz x6, L(fi0) + cmp x6, #2 + bcc L(fi1) + beq L(fi2) + +L(fi3): mul x8, x12, v0 + umulh x13, x12, v0 + cmn xzr, xzr + b L(L3) +L(fi2): mul x7, x12, v0 + umulh x5, x12, v0 + cmn xzr, xzr + b L(L2) +L(fi0): mul x9, x12, v0 + umulh x5, x12, v0 + sub n, n, #4 + cmn xzr, xzr + b L(L0) +L(fi1): mul x10, x12, v0 + umulh x13, x12, v0 + cmn xzr, xzr + cbz n, L(end) + +L(top): sub n, n, #4 + ldr x12, [up], #8 + mul x6, x12, v0 + umulh x5, x12, v0 + str x10, [rp], #8 + adcs x9, x6, x13 +L(L0): ldr x12, [up], #8 + mul x6, x12, v0 + umulh x13, x12, v0 + str x9, [rp] ,#8 + adcs x8, x6, x5 +L(L3): ldr x12, [up], #8 + mul x6, x12, v0 + umulh x5, x12, v0 + str x8, [rp], #8 + adcs x7, x6, x13 +L(L2): ldr x12, [up], #8 + mul x6, x12, v0 + umulh x13, x12, v0 + str x7, [rp], #8 + adcs x10, x6, x5 + cbnz n, L(top) + +L(end): str x10, [rp] + adc x0, x13, xzr + ret +EPILOGUE() |