dnl Contributed to the GNU project by Torbjörn Granlund.
dnl Copyright 2012 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 StrongARM -
C XScale ?
C Cortex-A7 ?
C Cortex-A8 ?
C Cortex-A9 4.25
C Cortex-A15 3
ASM_START()
PROLOGUE(mpn_mod_1s_2p) push {r4-r10}
tst n, #1 add r7, r3, #8
ldmia r7, {r7, r8, r12} C load B1, B2, B3 add ap, ap, n, lsl #2 C put ap at operand end
beq L(evn)
L(odd): subs n, n, #1
beq L(1)
ldmdb ap!, {r4,r6,r9} mov r10, #0
umlal r4, r10, r6, r7
umlal r4, r10, r9, r8
b L(com)
L(evn): ldmdb ap!, {r4,r10}
L(com): subs n, n, #2
ble L(end)
ldmdb ap!, {r5,r6}
b L(mid)
L(top): mov r9, #0
umlal r5, r9, r6, r7 C B1
umlal r5, r9, r4, r8 C B2
ldmdb ap!, {r4,r6}
umlal r5, r9, r10, r12 C B3
ble L(xit) mov r10, #0
umlal r4, r10, r6, r7 C B1
umlal r4, r10, r5, r8 C B2
ldmdb ap!, {r5,r6}
umlal r4, r10, r9, r12 C B3
L(mid): subs n, n, #4
bge L(top)
mov r9, #0
umlal r5, r9, r6, r7 C B1
umlal r5, r9, r4, r8 C B2
umlal r5, r9, r10, r12 C B3 mov r4, r5
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