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dnl PowerPC-32 mpn_sqr_diag_addlsh1.
dnl Copyright 2013 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 603e ?
C 604e ?
C 75x (G3) ?
C 7400,7410 (G4) ?
C 744x,745x (G4+) 6
C power4/ppc970 ?
C power5 ?
C This has been feebly optimised for 7447 but not for any other CPU.
define(`rp', r3)
define(`tp', r4)
define(`up', r5)
define(`n', r6)
ASM_START()
PROLOGUE(mpn_sqr_diag_addlsh1)
addi n, n, -1
addi tp, tp, -4
mtctr n
lwz r0, 0(up)
li r10, 0
mullw r7, r0, r0
stw r7, 0(rp)
mulhwu r6, r0, r0
addic r31, r31, 0 C clear CF
ALIGN(16)
L(top): lwzu r0, 4(up)
mullw r7, r0, r0
lwz r8, 4(tp)
lwzu r9, 8(tp)
rlwimi r10, r8, 1,0,30
srwi r11, r8, 31
rlwimi r11, r9, 1,0,30
adde r10, r10, r6
adde r11, r11, r7
stw r10, 4(rp)
srwi r10, r9, 31
mulhwu r6, r0, r0
stwu r11, 8(rp)
bdnz L(top)
adde r10, r10, r6
stw r10, 4(rp)
blr
EPILOGUE()
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