dnl PowerPC-64 mpn_copyd dnl Copyright 2004, 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 1 C POWER4/PPC970 1 C POWER5 ? C POWER6 ? C POWER7 1.4 C INPUT PARAMETERS C rp r3 C up r4 C n r5 ASM_START() PROLOGUE(mpn_copyd) rldic. r0, r5, 3, 59 C r0 = (r5 & 3) << 3; cr0 = (n == 4t)? cmpldi cr6, r0, 16 C cr6 = (n cmp 4t + 2)? ifdef(`HAVE_ABI_mode32', ` rldic r6, r5, 3, 32', C byte count corresponding to n ` rldicr r6, r5, 3, 60') C byte count corresponding to n addi r5, r5, 4 C compute... ifdef(`HAVE_ABI_mode32', ` rldicl r5, r5, 62,34', C ...branch count ` rldicl r5, r5, 62, 2') C ...branch count mtctr r5 add r4, r4, r6 add r3, r3, r6 sub r4, r4, r0 C offset up sub r3, r3, r0 C offset rp beq cr0, L(L00) blt cr6, L(L01) beq cr6, L(L10) b L(L11) ALIGN(16) L(oop): ld r6, 24(r4) std r6, 24(r3) L(L11): ld r6, 16(r4) std r6, 16(r3) L(L10): ld r6, 8(r4) std r6, 8(r3) L(L01): ld r6, 0(r4) std r6, 0(r3) L(L00): addi r4, r4, -32 addi r3, r3, -32 bdnz L(oop) blr EPILOGUE() |