1 dnl PowerPC-64 mpn_hamdist. 2 3 dnl Copyright 2012, 2017 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 cycles/limb 34 C POWER3/PPC630 - 35 C POWER4/PPC970 - 36 C POWER5 - 37 C POWER6 - 38 C POWER7 2.87 39 40 define(`up', r3) 41 define(`vp', r4) 42 define(`n', r5) 43 44 ASM_START() 45 PROLOGUE(mpn_hamdist) 46 std r30, -16(r1) 47 std r31, -8(r1) 48 49 addi r0, n, 1 50 ifdef(`HAVE_ABI_mode32', 51 ` rldicl r0, r0, 63,33', C ...branch count 52 ` srdi r0, r0, 1') C ...for ctr 53 mtctr r0 54 55 andi. r0, n, 1 56 57 li r0, 0 58 li r12, 0 59 60 beq L(evn) 61 62 L(odd): ld r6, 0(up) 63 addi up, up, 8 64 ld r8, 0(vp) 65 addi vp, vp, 8 66 xor r10, r6, r8 67 popcntd(r0, r10) 68 bdz L(e1) 69 70 L(evn): ld r6, 0(up) 71 ld r8, 0(vp) 72 ld r7, 8(up) 73 ld r9, 8(vp) 74 xor r10, r6, r8 75 addi up, up, 16 76 addi vp, vp, 16 77 li r30, 0 78 li r31, 0 79 bdz L(end) 80 81 nop 82 nop 83 C ALIGN(16) 84 L(top): add r0, r0, r30 85 ld r6, 0(up) 86 ld r8, 0(vp) 87 xor r11, r7, r9 88 popcntd(r30, r10) 89 add r12, r12, r31 90 ld r7, 8(up) 91 ld r9, 8(vp) 92 xor r10, r6, r8 93 popcntd(r31, r11) 94 addi up, up, 16 95 addi vp, vp, 16 96 bdnz L(top) 97 98 L(end): add r0, r0, r30 99 xor r11, r7, r9 100 popcntd(r30, r10) 101 add r12, r12, r31 102 popcntd(r31, r11) 103 104 add r0, r0, r30 105 add r12, r12, r31 106 L(e1): add r3, r0, r12 107 ld r30, -16(r1) 108 ld r31, -8(r1) 109 blr 110 EPILOGUE() 111
Indexes created Mon Mar 02 05:31:46 UTC 2026