dnl  Copyright 1999, 2000, 2002, 2003 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/.

dnl  Optimizations:

dnl  * Avoid skip instructions

dnl  * Put carry-generating and carry-consuming insns consecutively

dnl  * Don't allocate any stack, "home" positions for parameters could be used.

include(`../config.m4')

define(`p0',`%r28')

define(`p1',`%r29')

define(`t32',`%r19')

define(`t0',`%r20')

define(`t1',`%r21')

define(`x',`%r22')

define(`m0',`%r23')

define(`m1',`%r24')

ifdef(`HAVE_ABI_2_0w',

`	.level	2.0w

',`	.level	2.0

')

PROLOGUE(mpn_umul_ppmm_r)

	ldo		128(%r30),%r30

ifdef(`HAVE_ABI_2_0w',

`	std		%r26,-64(%r30)

	std		%r25,-56(%r30)

	copy		%r24,%r31

',`

	depd		%r25,31,32,%r26

	std		%r26,-64(%r30)

	depd		%r23,31,32,%r24

	std		%r24,-56(%r30)

	ldw		-180(%r30),%r31

')

	fldd		-64(%r30),%fr4

	fldd		-56(%r30),%fr5

	xmpyu		%fr5R,%fr4R,%fr6

	fstd		%fr6,-128(%r30)

	xmpyu		%fr5R,%fr4L,%fr7

	fstd		%fr7,-120(%r30)

	xmpyu		%fr5L,%fr4R,%fr8

	fstd		%fr8,-112(%r30)

	xmpyu		%fr5L,%fr4L,%fr9

	fstd		%fr9,-104(%r30)

	depdi,z		1,31,1,t32		C t32 = 2^32

	ldd		-128(%r30),p0		C lo = low 64 bit of product

	ldd		-120(%r30),m0		C m0 = mid0 64 bit of product

	ldd		-112(%r30),m1		C m1 = mid1 64 bit of product

	ldd		-104(%r30),p1		C hi = high 64 bit of product

	add,l,*nuv	m0,m1,x			C x = m1+m0

	 add,l		t32,p1,p1		C propagate carry to mid of p1

	depd,z		x,31,32,t0		C lo32(m1+m0)

	add		t0,p0,p0

	extrd,u		x,31,32,t1		C hi32(m1+m0)

	add,dc		t1,p1,p1

	std		p0,0(%r31)		C store low half of product

ifdef(`HAVE_ABI_2_0w',

`	copy		p1,%r28			C return val in %r28

',`	extrd,u		p1,31,32,%r28		C return val in %r28,%r29

')

	bve		(%r2)

	ldo		-128(%r30),%r30

EPILOGUE(mpn_umul_ppmm_r)