[thirdparty/glibc.git] / sysdeps / sparc / sparc64 / multiarch / add_n-vis3.S

! SPARC v9 64-bit VIS3 __mpn_add_n -- Add two limb vectors of the same length > 0 and
! store sum in a third limb vector.
!
! Copyright (C) 2013-2021 Free Software Foundation, Inc.
! This file is part of the GNU C Library.
! Contributed by David S. Miller <davem@davemloft.net>
!
! The GNU C 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 C 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 C Library; if not, see
! <https://www.gnu.org/licenses/>.

#include <sysdep.h>

#define res_ptr	%o0
#define s1_ptr	%o1
#define s2_ptr	%o2
#define sz	%o3
#define tmp1	%g1
#define tmp2	%g2
#define tmp3	%g3
#define tmp4	%o4

	.register	%g2,#scratch
	.register	%g3,#scratch
ENTRY(__mpn_add_n_vis3)
	subcc	sz, 1, sz
	be	.Lfinal_limb
	 cmp	%g0, 0

.Lloop:
	ldx	[s2_ptr + 0x00], tmp1
	add	s2_ptr, 0x10, s2_ptr
	ldx	[s1_ptr + 0x00], tmp2
	add	s1_ptr, 0x10, s1_ptr
	ldx	[s2_ptr - 0x08], tmp3
	add	res_ptr, 0x10, res_ptr
	ldx	[s1_ptr - 0x08], tmp4
	sub	sz, 2, sz
	addxccc	tmp1, tmp2, tmp1
	stx	tmp1, [res_ptr - 0x10]
	addxccc	tmp3, tmp4, tmp3
	brgz	sz, .Lloop
	stx	tmp3, [res_ptr - 0x08]

	brlz,pt	sz, .Lfinish
	 nop

.Lfinal_limb:
	ldx	[s2_ptr + 0x00], tmp1
	ldx	[s1_ptr + 0x00], tmp2
	addxccc	tmp1, tmp2, tmp1
	stx	tmp1, [res_ptr + 0x00]

.Lfinish:
	retl
	 addxc	%g0, %g0, %o0
END(__mpn_add_n_vis3)
Commit	Line	Data
32fcb36d DM	1	! SPARC v9 64-bit VIS3 __mpn_add_n -- Add two limb vectors of the same length > 0 and
	2	! store sum in a third limb vector.
	3	!
2b778ceb	4	! Copyright (C) 2013-2021 Free Software Foundation, Inc.
32fcb36d DM	5	! This file is part of the GNU C Library.
	6	! Contributed by David S. Miller <davem@davemloft.net>
	7	!
	8	! The GNU C Library is free software; you can redistribute it and/or
	9	! modify it under the terms of the GNU Lesser General Public
	10	! License as published by the Free Software Foundation; either
	11	! version 2.1 of the License, or (at your option) any later version.
	12	!
	13	! The GNU C Library is distributed in the hope that it will be useful,
	14	! but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	! Lesser General Public License for more details.
	17	!
	18	! You should have received a copy of the GNU Lesser General Public
	19	! License along with the GNU C Library; if not, see
5a82c748	20	! <https://www.gnu.org/licenses/>.
32fcb36d DM	21
	22	#include <sysdep.h>
	23
	24	#define res_ptr %o0
	25	#define s1_ptr %o1
	26	#define s2_ptr %o2
	27	#define sz %o3
	28	#define tmp1 %g1
	29	#define tmp2 %g2
	30	#define tmp3 %g3
	31	#define tmp4 %o4
	32
	33	.register %g2,#scratch
	34	.register %g3,#scratch
	35	ENTRY(__mpn_add_n_vis3)
	36	subcc sz, 1, sz
	37	be .Lfinal_limb
	38	cmp %g0, 0
	39
	40	.Lloop:
	41	ldx [s2_ptr + 0x00], tmp1
	42	add s2_ptr, 0x10, s2_ptr
	43	ldx [s1_ptr + 0x00], tmp2
	44	add s1_ptr, 0x10, s1_ptr
	45	ldx [s2_ptr - 0x08], tmp3
	46	add res_ptr, 0x10, res_ptr
	47	ldx [s1_ptr - 0x08], tmp4
	48	sub sz, 2, sz
	49	addxccc tmp1, tmp2, tmp1
	50	stx tmp1, [res_ptr - 0x10]
	51	addxccc tmp3, tmp4, tmp3
	52	brgz sz, .Lloop
	53	stx tmp3, [res_ptr - 0x08]
	54
	55	brlz,pt sz, .Lfinish
	56	nop
	57
	58	.Lfinal_limb:
	59	ldx [s2_ptr + 0x00], tmp1
	60	ldx [s1_ptr + 0x00], tmp2
	61	addxccc tmp1, tmp2, tmp1
	62	stx tmp1, [res_ptr + 0x00]
	63
	64	.Lfinish:
	65	retl
	66	addxc %g0, %g0, %o0
	67	END(__mpn_add_n_vis3)