/* SPARC v9 __mpn_lshift --

   Copyright (C) 1996-2018 Free Software Foundation, Inc.

   This file is part of the GNU MP Library.

   The GNU MP Library is free software; you can redistribute it and/or modify

   it under the terms of the GNU Lesser General Public License as published by

   the Free Software Foundation; either version 2.1 of the License, or (at your

   option) any later version.

   The GNU MP Library is distributed in the hope that it will be useful, but

   WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY

   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public

   License for more details.

   You should have received a copy of the GNU Lesser General Public License

   along with the GNU MP Library; see the file COPYING.LIB.  If not,

   see <http://www.gnu.org/licenses/>.  */

#include <sysdep.h>

/* INPUT PARAMETERS

   res_ptr	%o0

   src_ptr	%o1

   size		%o2

   cnt		%o3  */

	.register	%g2, #scratch

	.register	%g3, #scratch

ENTRY(__mpn_lshift)

	sllx	%o2,3,%g1

	add	%o1,%g1,%o1	! make %o1 point at end of src

	ldx	[%o1-8],%g2	! load first limb

	sub	%g0,%o3,%o5	! negate shift count

	add	%o0,%g1,%o0	! make %o0 point at end of res

	add	%o2,-1,%o2

	andcc	%o2,4-1,%g4	! number of limbs in first loop

	srlx	%g2,%o5,%g1	! compute function result

	be,pn	%xcc,.L0	! if multiple of 4 limbs, skip first loop

	 mov	%g1,%g5

	sub	%o2,%g4,%o2	! adjust count for main loop

.Loop0:	ldx	[%o1-16],%g3

	add	%o0,-8,%o0

	add	%o1,-8,%o1

	sllx	%g2,%o3,%o4

	addcc	%g4,-1,%g4

	srlx	%g3,%o5,%g1

	mov	%g3,%g2

	or	%o4,%g1,%o4

	bne,pt	%xcc,.Loop0

	 stx	%o4,[%o0+0]

.L0:	brz,pn	%o2,.Lend

	 nop

.Loop:	ldx	[%o1-16],%g3

	add	%o0,-32,%o0

	sllx	%g2,%o3,%o4

	addcc	%o2,-4,%o2

	srlx	%g3,%o5,%g1

	ldx	[%o1-24],%g2

	sllx	%g3,%o3,%g4

	or	%o4,%g1,%o4

	stx	%o4,[%o0+24]

	srlx	%g2,%o5,%g1

	ldx	[%o1-32],%g3

	sllx	%g2,%o3,%o4

	or	%g4,%g1,%g4

	stx	%g4,[%o0+16]

	srlx	%g3,%o5,%g1

	ldx	[%o1-40],%g2

	sllx	%g3,%o3,%g4

	or	%o4,%g1,%o4

	stx	%o4,[%o0+8]

	srlx	%g2,%o5,%g1

	add	%o1,-32,%o1

	or	%g4,%g1,%g4

	bne,pt	%xcc,.Loop

	 stx	%g4,[%o0+0]

.Lend:	sllx	%g2,%o3,%g2

	stx	%g2,[%o0-8]

	jmpl	%o7+8, %g0

	 mov	%g5,%o0

END(__mpn_lshift)