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! SPARC v9 64-bit VIS3 __mpn_submul_1 -- Multiply a limb vector with a
! limb and subtract the result from a second limb vector.
!
! Copyright (C) 2013-2019 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 %i0
#define s1_ptr %i1
#define sz %i2
#define s2_limb %i3
#define carry %o5
#define tmp1 %g1
#define tmp2 %g2
#define tmp3 %g3
#define tmp4 %o4
#define tmp5 %l0
#define tmp6 %l1
#define tmp7 %l2
#define tmp8 %l3
.register %g2,#scratch
.register %g3,#scratch
ENTRY(__mpn_submul_1_vis3)
save %sp, -176, %sp
subcc sz, 1, sz
be .Lfinal_limb
clr carry
.Lloop:
ldx [s1_ptr + 0x00], tmp1
ldx [res_ptr + 0x00], tmp3
ldx [s1_ptr + 0x08], tmp2
ldx [res_ptr + 0x08], tmp4
mulx tmp1, s2_limb, tmp5
add s1_ptr, 0x10, s1_ptr
umulxhi tmp1, s2_limb, tmp6
add res_ptr, 0x10, res_ptr
mulx tmp2, s2_limb, tmp7
sub sz, 2, sz
umulxhi tmp2, s2_limb, tmp8
addcc carry, tmp5, tmp5
addxc %g0, tmp6, carry
subcc tmp3, tmp5, tmp5
addxc %g0, carry, carry
stx tmp5, [res_ptr - 0x10]
addcc carry, tmp7, tmp7
addxc %g0, tmp8, carry
subcc tmp4, tmp7, tmp7
addxc %g0, carry, carry
brgz sz, .Lloop
stx tmp7, [res_ptr - 0x08]
brlz,pt sz, .Lfinish
nop
.Lfinal_limb:
ldx [s1_ptr + 0x00], tmp1
ldx [res_ptr + 0x00], tmp3
mulx tmp1, s2_limb, tmp5
umulxhi tmp1, s2_limb, tmp6
addcc carry, tmp5, tmp5
addxc %g0, tmp6, carry
subcc tmp3, tmp5, tmp5
addxc %g0, carry, carry
stx tmp5, [res_ptr + 0x00]
.Lfinish:
jmpl %i7 + 8, %g0
restore carry, 0, %o0
END(__mpn_submul_1_vis3)
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