From 11da511c784eca003deb90c23570f0873954e0de Mon Sep 17 00:00:00 2001 From: Duncan Wilkie Date: Sat, 18 Nov 2023 06:11:09 -0600 Subject: Initial commit. --- gmp-6.3.0/mpn/powerpc64/mode32/sub_n.asm | 88 ++++++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+) create mode 100644 gmp-6.3.0/mpn/powerpc64/mode32/sub_n.asm (limited to 'gmp-6.3.0/mpn/powerpc64/mode32/sub_n.asm') diff --git a/gmp-6.3.0/mpn/powerpc64/mode32/sub_n.asm b/gmp-6.3.0/mpn/powerpc64/mode32/sub_n.asm new file mode 100644 index 0000000..6fdc1d4 --- /dev/null +++ b/gmp-6.3.0/mpn/powerpc64/mode32/sub_n.asm @@ -0,0 +1,88 @@ +dnl PowerPC-64/mode32 mpn_sub_n -- Subtract two limb vectors of the same +dnl length and store difference in a third limb vector. + +dnl Copyright 1999-2001, 2003, 2005 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 POWER3/PPC630: ? +C POWER4/PPC970: 4.25 + +C INPUT PARAMETERS +C rp r3 +C up r4 +C vp r5 +C n r6 + +ASM_START() +PROLOGUE(mpn_sub_n) + mtctr r6 C copy size into CTR + addic r0, r6, -1 C set cy + ld r8, 0(r4) C load least significant s1 limb + ld r0, 0(r5) C load least significant s2 limb + addi r3, r3, -8 C offset res_ptr, it's updated before it's used + bdz L(end) C If done, skip loop + +L(oop): ld r9, 8(r4) C load s1 limb + ld r10, 8(r5) C load s2 limb + subfe r7, r0, r8 C subtract limbs with cy, set cy + srdi r6, r0, 32 + srdi r11, r8, 32 + subfe r6, r6, r11 + std r7, 8(r3) C store result limb + bdz L(exit) C decrement CTR and exit if done + ldu r8, 16(r4) C load s1 limb and update s1_ptr + ldu r0, 16(r5) C load s2 limb and update s2_ptr + subfe r7, r10, r9 C subtract limbs with cy, set cy + srdi r6, r10, 32 + srdi r11, r9, 32 + subfe r6, r6, r11 + stdu r7, 16(r3) C store result limb and update res_ptr + bdnz L(oop) C decrement CTR and loop back + +L(end): subfe r7, r0, r8 + srdi r6, r0, 32 + srdi r11, r8, 32 + subfe r6, r6, r11 + std r7, 8(r3) C store ultimate result limb + subfe r3, r0, r0 C load !cy into ... + subfic r4, r3, 0 C ... return value register + li r3, 0 C zero extend return value + blr +L(exit): subfe r7, r10, r9 + srdi r6, r10, 32 + srdi r11, r9, 32 + subfe r6, r6, r11 + std r7, 16(r3) + subfe r3, r0, r0 C load !cy into ... + subfic r4, r3, 0 C ... return value register + li r3, 0 C zero extend return value + blr +EPILOGUE() -- cgit v1.2.3