dnl  HP-PA 2.0 64-bit mpn_sqr_diagonal.

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 to
dnl  the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
dnl  MA 02111-1307, USA.


dnl  This code runs at 7.25 cycles/limb on PA8000 and 7.75 cycles/limb on
dnl  PA8500.  The cache would saturate at 5 cycles/limb, so there is some room
dnl  for optimization.

include(`../config.m4')

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

define(`p00',`%r28')
define(`p32',`%r29')
define(`p64',`%r31')
define(`t0',`%r19')
define(`t1',`%r20')

ifdef(`HAVE_ABI_2_0w',
`	.level	2.0W
',`	.level	2.0N
')
PROLOGUE(mpn_sqr_diagonal)
	.proc
	.entry
	ldo		128(%r30),%r30

	fldds,ma	8(up),%fr8
	addib,=		-1,n,L(end1)
	nop
	fldds,ma	8(up),%fr4
	xmpyu		%fr8l,%fr8r,%fr10
	fstd		%fr10,-120(%r30)
	xmpyu		%fr8r,%fr8r,%fr9
	fstd		%fr9,0(rp)
	xmpyu		%fr8l,%fr8l,%fr11
	fstd		%fr11,8(rp)
	addib,=		-1,n,L(end2)
	ldo		16(rp),rp

L(loop)	fldds,ma	8(up),%fr8		C load next up limb
	xmpyu		%fr4l,%fr4r,%fr6
	fstd		%fr6,-128(%r30)
	xmpyu		%fr4r,%fr4r,%fr5	C multiply in fp regs
	fstd		%fr5,0(rp)
	xmpyu		%fr4l,%fr4l,%fr7
	fstd		%fr7,8(rp)
	ldd		-120(%r30),p32
	ldd		-16(rp),p00		C accumulate in int regs
	ldd		-8(rp),p64
	depd,z		p32,30,31,t0
	add		t0,p00,p00
	std		p00,-16(rp)
	extrd,u		p32,32,33,t1
	add,dc		t1,p64,p64
	std		p64,-8(rp)
	addib,=		-1,n,L(exit)
	ldo		16(rp),rp

	fldds,ma	8(up),%fr4
	xmpyu		%fr8l,%fr8r,%fr10
	fstd		%fr10,-120(%r30)
	xmpyu		%fr8r,%fr8r,%fr9
	fstd		%fr9,0(rp)
	xmpyu		%fr8l,%fr8l,%fr11
	fstd		%fr11,8(rp)
	ldd		-128(%r30),p32
	ldd		-16(rp),p00
	ldd		-8(rp),p64
	depd,z		p32,30,31,t0
	add		t0,p00,p00
	std		p00,-16(rp)
	extrd,u		p32,32,33,t1
	add,dc		t1,p64,p64
	std		p64,-8(rp)
	addib,<>	-1,n,L(loop)
	ldo		16(rp),rp

L(end2)	xmpyu		%fr4l,%fr4r,%fr6
	fstd		%fr6,-128(%r30)
	xmpyu		%fr4r,%fr4r,%fr5
	fstd		%fr5,0(rp)
	xmpyu		%fr4l,%fr4l,%fr7
	fstd		%fr7,8(rp)
	ldd		-120(%r30),p32
	ldd		-16(rp),p00
	ldd		-8(rp),p64
	depd,z		p32,30,31,t0
	add		t0,p00,p00
	std		p00,-16(rp)
	extrd,u		p32,32,33,t1
	add,dc		t1,p64,p64
	std		p64,-8(rp)
	ldo		16(rp),rp
	ldd		-128(%r30),p32
	ldd		-16(rp),p00
	ldd		-8(rp),p64
	depd,z		p32,30,31,t0
	add		t0,p00,p00
	std		p00,-16(rp)
	extrd,u		p32,32,33,t1
	add,dc		t1,p64,p64
	std		p64,-8(rp)
	bve		(%r2)
	ldo		-128(%r30),%r30

L(exit)	xmpyu		%fr8l,%fr8r,%fr10
	fstd		%fr10,-120(%r30)
	xmpyu		%fr8r,%fr8r,%fr9
	fstd		%fr9,0(rp)
	xmpyu		%fr8l,%fr8l,%fr11
	fstd		%fr11,8(rp)
	ldd		-128(%r30),p32
	ldd		-16(rp),p00
	ldd		-8(rp),p64
	depd,z		p32,31,32,t0
	add		t0,p00,p00
	extrd,u		p32,31,32,t1
	add,dc		t1,p64,p64
	add		t0,p00,p00
	add,dc		t1,p64,p64
	std		p00,-16(rp)
	std		p64,-8(rp)
	ldo		16(rp),rp
	ldd		-120(%r30),p32
	ldd		-16(rp),p00
	ldd		-8(rp),p64
	depd,z		p32,31,32,t0
	add		t0,p00,p00
	extrd,u		p32,31,32,t1
	add,dc		t1,p64,p64
	add		t0,p00,p00
	add,dc		t1,p64,p64
	std		p00,-16(rp)
	std		p64,-8(rp)
	bve		(%r2)
	ldo		-128(%r30),%r30

L(end1)	xmpyu		%fr8l,%fr8r,%fr10
	fstd		%fr10,-128(%r30)
	xmpyu		%fr8r,%fr8r,%fr9
	fstd		%fr9,0(rp)
	xmpyu		%fr8l,%fr8l,%fr11
	fstd		%fr11,8(rp)
	ldo		16(rp),rp
	ldd		-128(%r30),p32
	ldd		-16(rp),p00
	ldd		-8(rp),p64
	depd,z		p32,31,32,t0
	add		t0,p00,p00
	extrd,u		p32,31,32,t1
	add,dc		t1,p64,p64
	add		t0,p00,p00
	add,dc		t1,p64,p64
	std		p00,-16(rp)
	std		p64,-8(rp)
	bve		(%r2)
	ldo		-128(%r30),%r30
	.procend
EPILOGUE(mpn_sqr_diagonal)