dnl  VAX mpn_submul_1 -- Multiply a limb vector with a limb and subtract the

dnl  result from a second limb vector.

dnl  Copyright 1992, 1994, 1996, 2000, 2012 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/.

include(`../config.m4')

ASM_START()

PROLOGUE(mpn_submul_1)

	.word	0xfc0

	movl	12(ap), r4

	movl	8(ap), r8

	movl	4(ap), r9

	clrl	r3

	incl	r4

	ashl	$-1, r4, r7

	clrl	r11

	movl	16(ap), r6

	jlss	L(v0_big)

	jlbc	r4, L(1)

C Loop for v0 < 0x80000000

L(tp1):	movl	(r8)+, r1

	jlss	L(1n0)

	emul	r1, r6, $0, r2

	addl2	r11, r2

	adwc	$0, r3

	subl2	r2, (r9)+

	adwc	$0, r3

L(1):	movl	(r8)+, r1

	jlss	L(1n1)

L(1p1):	emul	r1, r6, $0, r10

	addl2	r3, r10

	adwc	$0, r11

	subl2	r10, (r9)+

	adwc	$0, r11

	sobgtr	r7, L(tp1)

	movl	r11, r0

	ret

L(1n0):	emul	r1, r6, $0, r2

	addl2	r11, r2

	adwc	r6, r3

	subl2	r2, (r9)+

	adwc	$0, r3

	movl	(r8)+, r1

	jgeq	L(1p1)

L(1n1):	emul	r1, r6, $0, r10

	addl2	r3, r10

	adwc	r6, r11

	subl2	r10, (r9)+

	adwc	$0, r11

	sobgtr	r7, L(tp1)

	movl	r11, r0

	ret

L(v0_big):

	jlbc	r4, L(2)

C Loop for v0 >= 0x80000000

L(tp2):	movl	(r8)+, r1

	jlss	L(2n0)

	emul	r1, r6, $0, r2

	addl2	r11, r2

	adwc	r1, r3

	subl2	r2, (r9)+

	adwc	$0, r3

L(2):	movl	(r8)+, r1

	jlss	L(2n1)

L(2p1):	emul	r1, r6, $0, r10

	addl2	r3, r10

	adwc	r1, r11

	subl2	r10, (r9)+

	adwc	$0, r11

	sobgtr	r7, L(tp2)

	movl	r11, r0

	ret

L(2n0):	emul	r1, r6, $0, r2

	addl2	r11, r2

	adwc	r6, r3

	subl2	r2, (r9)+

	adwc	r1, r3

	movl	(r8)+, r1

	jgeq	L(2p1)

L(2n1):	emul	r1, r6, $0, r10

	addl2	r3, r10

	adwc	r6, r11

	subl2	r10, (r9)+

	adwc	r1, r11

	sobgtr	r7, L(tp2)

	movl	r11, r0

	ret

EPILOGUE()