dnl  SPARC v9 mpn_lshiftc

dnl  Contributed to the GNU project by David Miller.

dnl  Copyright 2013 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')

C		    cycles/limb

C UltraSPARC 1&2:	 3

C UltraSPARC 3:		 3

C UltraSPARC T1:	17

C UltraSPARC T3:	10

C UltraSPARC T4:	 3.5

C INPUT PARAMETERS

define(`rp',     `%i0')

define(`up',     `%i1')

define(`n',      `%i2')

define(`cnt',    `%i3')

define(`tcnt',   `%i4')

define(`retval', `%i5')

define(`u0',     `%l0')

define(`u1',     `%l1')

define(`r0',     `%l6')

define(`r1',     `%l7')

define(`u0_off', `%o0')

define(`u1_off', `%o1')

define(`r0_off', `%o2')

define(`r1_off', `%o3')

ASM_START()

	REGISTER(%g2,#scratch)

	REGISTER(%g3,#scratch)

PROLOGUE(mpn_lshiftc)

	save	%sp, -176, %sp

	sllx	n, 3, n

	sub	%g0, cnt, tcnt

	sub	up, 8, u1_off

	add	rp, (5 * 8), r1_off

	ldx	[n + u1_off], u1	C WAS: up - 8

	add	u1_off, (3 * 8), u1_off

	sub	r1_off, 8, r0_off

	sub	u1_off, 8, u0_off

	subcc	n, (3 * 8), n

	srlx	u1, tcnt, retval

	bl,pn	%xcc, L(end12)

	 sllx	u1, cnt, %l3

	ldx	[n + u0_off], u0	C WAS: up - 16

	subcc	n, (2 * 8), n

	ldx	[n + u1_off], u1	C WAS: up - 24

	bl,pn	%xcc, L(end34)

	 srlx	u0, tcnt, %l4

	b,a	L(top)

	ALIGN(16)

L(top):

	not	%l3, %l3

	sllx	u0, cnt, %l2

	andn	%l3, %l4, r0

	ldx	[n + u0_off], u0	C WAS: up - 16

	srlx	u1, tcnt, %l5

	stx	r0, [n + r0_off]	C WAS: rp - 8

	subcc	n, (2 * 8), n

	not	%l2, %l2

	sllx	u1, cnt, %l3

	andn	%l2, %l5, r1

	ldx	[n + u1_off], u1	C WAS: up - 24

	srlx	u0, tcnt, %l4

	bge,pt	%xcc, L(top)

	 stx	r1, [n + r1_off]	C WAS: rp - 16

L(end34):

	not	%l3, %l3

	sllx	u0, cnt, %l2

	andn	%l3, %l4, r0

	srlx	u1, tcnt, %l5

	stx	r0, [n + r0_off]	C WAS: rp - 8

	not	%l2, %l2

	andn	%l2, %l5, r1

	sub	n, (2 * 8), %o5

	sllx	u1, cnt, %l3

	stx	r1, [%o5 + r1_off]	C WAS: rp - 16

L(end12):

	andcc	n, 8, %g0

	bz	%xcc, L(done)+4

	 not	%l3, %l3

	ldx	[n + u0_off], u1

	srlx	u1, tcnt, %l4

	andn	%l3, %l4, r0

	stx	r0, [r0_off - 24]

	sllx	u1, cnt, %l3

L(done):

	not	%l3, %l3

	stx	%l3, [r0_off - 32]

	ret

	restore retval, 0, %o0

EPILOGUE()