dnl  HP-PA 32-bit mpn_sqr_diagonal optimized for the PA8x00.

dnl  Copyright 2001, 2002 Free Software Foundation, Inc.

dnl  This file is part of the GNU MP Library.

dnl  The GNU MP Library is free software; you can redistribute it and/or modify
dnl  it under the terms of the GNU Lesser General Public License as published
dnl  by the Free Software Foundation; either version 2.1 of the License, or (at
dnl  your option) any later version.

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 Lesser General Public
dnl  License for more details.

dnl  You should have received a copy of the GNU Lesser General Public License
dnl  along with the GNU MP Library; see the file COPYING.LIB.  If not, write
dnl  to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
dnl  Boston, MA 02110-1301, USA.

include(`../config.m4')

C This code runs at 6 cycles/limb on the PA7100 and 2 cycles/limb on PA8x00.
C The 2-way unrolling is actually not helping the PA7100.

C INPUT PARAMETERS
define(`rp',`%r26')
define(`up',`%r25')
define(`n',`%r24')

ASM_START()
PROLOGUE(mpn_sqr_diagonal)

	fldws,ma	4(up),%fr4r
	addib,=		-1,n,L(end1)
	ldo		4(rp),rp

	fldws,ma	4(up),%fr6r
	addib,=		-1,n,L(end2)
	xmpyu		%fr4r,%fr4r,%fr5

	fldws,ma	4(up),%fr4r
	addib,=		-1,n,L(end3)
	xmpyu		%fr6r,%fr6r,%fr7


LDEF(loop)
	fldws,ma	4(up),%fr6r
	fstws		%fr5r,-4(rp)
	fstws,ma	%fr5l,8(rp)
	addib,=		-1,n,L(exite)
	xmpyu		%fr4r,%fr4r,%fr5
	fldws,ma	4(up),%fr4r
	fstws		%fr7r,-4(rp)
	fstws,ma	%fr7l,8(rp)
	addib,<>	-1,n,L(loop)
	xmpyu		%fr6r,%fr6r,%fr7

LDEF(exito)
	fstws		%fr5r,-4(rp)
	fstws		%fr5l,0(rp)
	xmpyu		%fr4r,%fr4r,%fr5
	fstws		%fr7r,4(rp)
	fstws		%fr7l,8(rp)
	fstws,mb	%fr5r,12(rp)
	bv		0(%r2)
	fstws		%fr5l,4(rp)

LDEF(exite)
	fstws		%fr7r,-4(rp)
	fstws		%fr7l,0(rp)
	xmpyu		%fr6r,%fr6r,%fr7
	fstws		%fr5r,4(rp)
	fstws		%fr5l,8(rp)
	fstws,mb	%fr7r,12(rp)
	bv		0(%r2)
	fstws		%fr7l,4(rp)

LDEF(end1)
	xmpyu		%fr4r,%fr4r,%fr5
	fstws		%fr5r,-4(rp)
	bv		0(%r2)
	fstws,ma	%fr5l,8(rp)

LDEF(end2)
	xmpyu		%fr6r,%fr6r,%fr7
	fstws		%fr5r,-4(rp)
	fstws		%fr5l,0(rp)
	fstws		%fr7r,4(rp)
	bv		0(%r2)
	fstws		%fr7l,8(rp)

LDEF(end3)
	fstws		%fr5r,-4(rp)
	fstws		%fr5l,0(rp)
	xmpyu		%fr4r,%fr4r,%fr5
	fstws		%fr7r,4(rp)
	fstws		%fr7l,8(rp)
	fstws,mb	%fr5r,12(rp)
	bv		0(%r2)
	fstws		%fr5l,4(rp)
EPILOGUE(mpn_sqr_diagonal)