diff options
| 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/vax/sub_n.asm | |
Initial commit.
Diffstat (limited to 'gmp-6.3.0/mpn/vax/sub_n.asm')
| -rw-r--r-- | gmp-6.3.0/mpn/vax/sub_n.asm | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/gmp-6.3.0/mpn/vax/sub_n.asm b/gmp-6.3.0/mpn/vax/sub_n.asm new file mode 100644 index 0000000..2844ef2 --- /dev/null +++ b/gmp-6.3.0/mpn/vax/sub_n.asm @@ -0,0 +1,64 @@ +dnl VAX mpn_sub_n -- Subtract two limb vectors of the same length > 0 and +dnl store difference in a third limb vector. + +dnl Copyright 1999, 2000, 2012 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') + +ASM_START() +PROLOGUE(mpn_sub_n) + .word 0x0 + movl 16(ap), r0 + movl 12(ap), r1 + movl 8(ap), r2 + movl 4(ap), r3 + mnegl r0, r5 + addl2 $3, r0 + ashl $-2, r0, r0 C unroll loop count + bicl2 $-4, r5 C mask out low 2 bits + movaq (r5)[r5], r5 C 9x + jmp L(top)[r5] + +L(top): movl (r2)+, r4 + sbwc (r1)+, r4 + movl r4, (r3)+ + movl (r2)+, r4 + sbwc (r1)+, r4 + movl r4, (r3)+ + movl (r2)+, r4 + sbwc (r1)+, r4 + movl r4, (r3)+ + movl (r2)+, r4 + sbwc (r1)+, r4 + movl r4, (r3)+ + sobgtr r0, L(top) + + adwc r0, r0 + ret +EPILOGUE() |