1 dnl ARM/Thumb mpn_add_n. 2 3 dnl Copyright 1997, 2000, 2012 Free Software Foundation, Inc. 4 5 dnl This file is part of the GNU MP Library. 6 dnl 7 dnl The GNU MP Library is free software; you can redistribute it and/or modify 8 dnl it under the terms of either: 9 dnl 10 dnl * the GNU Lesser General Public License as published by the Free 11 dnl Software Foundation; either version 3 of the License, or (at your 12 dnl option) any later version. 13 dnl 14 dnl or 15 dnl 16 dnl * the GNU General Public License as published by the Free Software 17 dnl Foundation; either version 2 of the License, or (at your option) any 18 dnl later version. 19 dnl 20 dnl or both in parallel, as here. 21 dnl 22 dnl The GNU MP Library is distributed in the hope that it will be useful, but 23 dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 24 dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 25 dnl for more details. 26 dnl 27 dnl You should have received copies of the GNU General Public License and the 28 dnl GNU Lesser General Public License along with the GNU MP Library. If not, 29 dnl see https://www.gnu.org/licenses/. 30 31 include(`../config.m4') 32 33 C INPUT PARAMETERS 34 define(`rp', r0) 35 define(`up', r1) 36 define(`vp', r2) 37 define(`n', r3) 38 39 ASM_START() 40 .thumb 41 PROLOGUE(mpn_add_nc) 42 push {r4, r5, r6} 43 ldr r6, [sp, #12] C init carry save register 44 sub r6, #1 45 b L(top) 46 EPILOGUE() 47 PROLOGUE(mpn_add_n) 48 push {r4, r5, r6} 49 neg r6, n C init carry save register 50 51 L(top): ldmia up!, {r4} C load next limb from S1 52 cmp n, r6 C tricky carry restore 53 ldmia vp!, {r5} C load next limb from S2 54 adc r4, r5 55 stmia rp!, {r4} C store result limb to RES 56 sbc r6, r6 C save negated carry 57 sub n, #1 58 bne L(top) 59 60 add r0, r6, #1 61 pop {r4, r5, r6} 62 bx lr 63 EPILOGUE() 64
Indexes created Sat Feb 28 05:31:39 UTC 2026