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! SPARC v8 __mpn_submul_1 -- Multiply a limb vector with a limb and
! subtract the result from a second limb vector.
! Copyright (C) 1992, 1993, 1994 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 Library General Public License as published by
! the Free Software Foundation; either version 2 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 Library General Public
! License for more details.
! You should have received a copy of the GNU Library General Public License
! along with the GNU MP Library; see the file COPYING.LIB. If not, write to
! the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
! MA 02111-1307, USA.
! INPUT PARAMETERS
! res_ptr o0
! s1_ptr o1
! size o2
! s2_limb o3
#include "sysdep.h"
.text
.align 4
.global C_SYMBOL_NAME(__mpn_submul_1)
C_SYMBOL_NAME(__mpn_submul_1):
sub %g0,%o2,%o2 ! negate ...
sll %o2,2,%o2 ! ... and scale size
sub %o1,%o2,%o1 ! o1 is offset s1_ptr
sub %o0,%o2,%g1 ! g1 is offset res_ptr
mov 0,%o0 ! clear cy_limb
Loop: ld [%o1+%o2],%o4
ld [%g1+%o2],%g2
umul %o4,%o3,%o5
rd %y,%g3
addcc %o5,%o0,%o5
addx %g3,0,%o0
subcc %g2,%o5,%g2
addx %o0,0,%o0
st %g2,[%g1+%o2]
addcc %o2,4,%o2
bne Loop
nop
retl
nop
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