dnl  PowerPC-32 mpn_mul_1 -- Multiply a limb vector with a limb and store the

dnl  result in a second limb vector.

dnl  Copyright 1995, 1997, 2000, 2002, 2003, 2005 Free Software Foundation,

dnl  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/.

include(`../config.m4')

C                cycles/limb

C 603e:            ?

C 604e:            4.0

C 75x (G3):        4.5-11

C 7400,7410 (G4):  4.5-11

C 744x,745x (G4+): 6.0

C power4/ppc970:   6.0

C power5:          5.63

C INPUT PARAMETERS

C rp	r3

C up	r4

C n	r5

C vl	r6

ASM_START()

PROLOGUE(mpn_mul_1)

	mtctr	r5

	addi	r3,r3,-4	C adjust res_ptr, it's offset before it's used

	li	r12,0		C clear upper product reg

	addic	r0,r0,0		C clear cy

C Start software pipeline

	lwz	r8,0(r4)

	bdz	L(end3)

	lwzu	r9,4(r4)

	mullw	r11,r8,r6

	mulhwu	r0,r8,r6

	bdz	L(end1)

C Software pipelined main loop

L(loop):

	lwz	r8,4(r4)

	mullw	r10,r9,r6

	adde	r5,r11,r12

	mulhwu	r12,r9,r6

	stw	r5,4(r3)

	bdz	L(end2)

	lwzu	r9,8(r4)

	mullw	r11,r8,r6

	adde	r7,r10,r0

	mulhwu	r0,r8,r6

	stwu	r7,8(r3)

	bdnz	L(loop)

C Finish software pipeline

L(end1):

	mullw	r10,r9,r6

	adde	r5,r11,r12

	mulhwu	r12,r9,r6

	stw	r5,4(r3)

	adde	r7,r10,r0

	stwu	r7,8(r3)

	addze	r3,r12

	blr

L(end2):

	mullw	r11,r8,r6

	adde	r7,r10,r0

	mulhwu	r0,r8,r6

	stwu	r7,8(r3)

	adde	r5,r11,r12

	stw	r5,4(r3)

	addze	r3,r0

	blr

L(end3):

	mullw	r11,r8,r6

	stw	r11,4(r3)

	mulhwu	r3,r8,r6

	blr

EPILOGUE(mpn_mul_1)