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| author | Duncan Wilkie <antigravityd@gmail.com> | 2023-11-18 06:11:09 -0600 |
|---|---|---|
| committer | Duncan Wilkie <antigravityd@gmail.com> | 2023-11-18 06:11:09 -0600 |
| commit | 11da511c784eca003deb90c23570f0873954e0de (patch) | |
| tree | e14fdd3d5d6345956d67e79ae771d0633d28362b /gmp-6.3.0/mpn/riscv/64/aorsmul_1.asm | |
Initial commit.
Diffstat (limited to 'gmp-6.3.0/mpn/riscv/64/aorsmul_1.asm')
| -rw-r--r-- | gmp-6.3.0/mpn/riscv/64/aorsmul_1.asm | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/gmp-6.3.0/mpn/riscv/64/aorsmul_1.asm b/gmp-6.3.0/mpn/riscv/64/aorsmul_1.asm new file mode 100644 index 0000000..1125a9f --- /dev/null +++ b/gmp-6.3.0/mpn/riscv/64/aorsmul_1.asm @@ -0,0 +1,75 @@ +dnl RISC-V/64 mpn_addmul_1 and mpn_submul_1. + +dnl Copyright 2016 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 INPUT PARAMETERS +define(`rp', `a0') +define(`up', `a1') +define(`n', `a2') +define(`v0', `a3') + +ifdef(`OPERATION_addmul_1',` + define(`ADDSUB', `add') + define(`CMPCY', `sltu $1, $2, $3') + define(`func', `mpn_addmul_1') +') +ifdef(`OPERATION_submul_1',` + define(`ADDSUB', `sub') + define(`CMPCY', `sltu $1, $3, $2') + define(`func', `mpn_submul_1') +') + +MULFUNC_PROLOGUE(mpn_addmul_1 mpn_submul_1) + +ASM_START() +PROLOGUE(func) + li a6, 0 + +L(top): ld a7, 0(up) + addi up, up, 8 C bookkeeping + ld a4, 0(rp) + addi rp, rp, 8 C bookkeeping + mul a5, a7, v0 + addi n, n, -1 C bookkeeping + mulhu a7, a7, v0 + ADDSUB a5, a4, a5 + ADDSUB a6, a5, a6 C cycle 0, 3, ... + CMPCY( a4, a5, a4) + add a4, a4, a7 + CMPCY( a5, a6, a5) C cycle 1, 4, ... + sd a6, -8(rp) + add a6, a4, a5 C cycle 2, 5, ... + bne n, x0, L(top) C bookkeeping + +L(end): mv a0, a6 + ret +EPILOGUE() +ASM_END() |