aorsmul_1.asm revision 1.1
1 dnl ARM64 mpn_submul_1 2 3 dnl Contributed to the GNU project by Torbjrn Granlund. 4 5 dnl Copyright 2013 Free Software Foundation, Inc. 6 7 dnl This file is part of the GNU MP Library. 8 dnl 9 dnl The GNU MP Library is free software; you can redistribute it and/or modify 10 dnl it under the terms of either: 11 dnl 12 dnl * the GNU Lesser General Public License as published by the Free 13 dnl Software Foundation; either version 3 of the License, or (at your 14 dnl option) any later version. 15 dnl 16 dnl or 17 dnl 18 dnl * the GNU General Public License as published by the Free Software 19 dnl Foundation; either version 2 of the License, or (at your option) any 20 dnl later version. 21 dnl 22 dnl or both in parallel, as here. 23 dnl 24 dnl The GNU MP Library is distributed in the hope that it will be useful, but 25 dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 26 dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 27 dnl for more details. 28 dnl 29 dnl You should have received copies of the GNU General Public License and the 30 dnl GNU Lesser General Public License along with the GNU MP Library. If not, 31 dnl see https://www.gnu.org/licenses/. 32 33 include(`../config.m4') 34 35 C cycles/limb 36 C Cortex-A53 ? 37 C Cortex-A57 ? 38 39 changecom(@&*$) 40 41 define(`rp', `x0') 42 define(`up', `x1') 43 define(`n', `x2') 44 define(`v0', `x3') 45 46 ifdef(`OPERATION_addmul_1', ` 47 define(`ADDSUB', adds) 48 define(`ADDSUBC', adcs) 49 define(`COND', `cc') 50 define(`func', mpn_addmul_1)') 51 ifdef(`OPERATION_submul_1', ` 52 define(`ADDSUB', subs) 53 define(`ADDSUBC', sbcs) 54 define(`COND', `cs') 55 define(`func', mpn_submul_1)') 56 57 MULFUNC_PROLOGUE(mpn_addmul_1 mpn_submul_1) 58 59 PROLOGUE(func) 60 mov x15, #0 61 62 tbz n, #0, L(1) 63 64 ldr x4, [up],#8 65 mul x8, x4, v0 66 umulh x12, x4, v0 67 adds x8, x8, x15 68 ldr x4, [rp,#0] 69 ADDSUB x8, x4, x8 70 csinc x15, x12, x12, COND 71 str x8, [rp],#8 72 73 L(1): tbz n, #1, L(2) 74 75 ldp x4, x5, [up],#16 76 mul x8, x4, v0 77 umulh x12, x4, v0 78 mul x9, x5, v0 79 umulh x13, x5, v0 80 adds x8, x8, x15 81 adcs x9, x9, x12 82 ldp x4, x5, [rp,#0] 83 adc x15, x13, xzr 84 sub n, n, #1 85 ADDSUB x8, x4, x8 86 ADDSUBC x9, x5, x9 87 csinc x15, x15, x15, COND 88 stp x8, x9, [rp],#16 89 90 L(2): lsr n, n, #2 91 cbz n, L(end) 92 93 L(top): ldp x4, x5, [up],#16 94 ldp x6, x7, [up],#16 95 mul x8, x4, v0 96 umulh x12, x4, v0 97 mul x9, x5, v0 98 umulh x13, x5, v0 99 adds x8, x8, x15 100 mul x10, x6, v0 101 umulh x14, x6, v0 102 adcs x9, x9, x12 103 mul x11, x7, v0 104 umulh x15, x7, v0 105 adcs x10, x10, x13 106 ldp x4, x5, [rp,#0] 107 adcs x11, x11, x14 108 ldp x6, x7, [rp,#16] 109 adc x15, x15, xzr 110 sub n, n, #1 111 ADDSUB x8, x4, x8 112 ADDSUBC x9, x5, x9 113 ADDSUBC x10, x6, x10 114 ADDSUBC x11, x7, x11 115 stp x8, x9, [rp],#16 116 csinc x15, x15, x15, COND 117 stp x10, x11, [rp],#16 118 cbnz n, L(top) 119 120 L(end): mov x0, x15 121 ret 122 EPILOGUE() 123
Indexes created Mon Jun 29 00:24:49 UTC 2026