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 3 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.  If not, see http://www.gnu.org/licenses/.

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)
