dnl  PowerPC-64 mpn_mul_1 -- Multiply a limb vector with a limb and store
dnl  the result in a second limb vector.

dnl  Copyright 1999, 2000, 2001 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 by
dnl  the Free Software Foundation; either version 2.1 of the License, or (at your
dnl  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 INPUT PARAMETERS
C res_ptr	r3
C s1_ptr	r4
C size		r5
C s2_limb	r6
C cy_limb	r7

C PPC630: 6 to 18 cycles/limb, depending on multiplier.  This cannot be
C improved unless floating-point operations are used instead of the slow
C mulld/mulhdu.

ASM_START()
PROLOGUE(mpn_mul_1)
	li	r7,0		C cy_limb = 0

PROLOGUE(mpn_mul_1c)
	mtctr	r5
	addic	r0,r0,0
	addi	r3, r3, -8
	addi	r4, r4, -8
L(top):	ldu	r0,8(r4)
	mulld	r9,r0,r6
	adde	r9,r9,r7
	mulhdu	r7,r0,r6
	stdu	r9,8(r3)
	bdnz	L(top)

	addze	r3,r7
	blr
EPILOGUE(mpn_mul_1)
EPILOGUE(mpn_mul_1c)