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61 lines
1.5 KiB
ArmAsm
61 lines
1.5 KiB
ArmAsm
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! SPARC v8 __mpn_submul_1 -- Multiply a limb vector with a limb and
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! subtract the result from a second limb vector.
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! Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
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! This file is part of the GNU MP Library.
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! The GNU MP Library is free software; you can redistribute it and/or modify
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! it under the terms of the GNU Library General Public License as published by
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! the Free Software Foundation; either version 2 of the License, or (at your
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! option) any later version.
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! The GNU MP Library is distributed in the hope that it will be useful, but
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! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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! or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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! License for more details.
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! You should have received a copy of the GNU Library General Public License
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! along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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! the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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! MA 02111-1307, USA.
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! INPUT PARAMETERS
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! res_ptr o0
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! s1_ptr o1
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! size o2
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! s2_limb o3
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#include "sysdep.h"
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.text
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.align 4
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.global C_SYMBOL_NAME(mpihelp_submul_1)
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C_SYMBOL_NAME(mpihelp_submul_1):
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sub %g0,%o2,%o2 ! negate ...
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sll %o2,2,%o2 ! ... and scale size
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sub %o1,%o2,%o1 ! o1 is offset s1_ptr
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sub %o0,%o2,%g1 ! g1 is offset res_ptr
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mov 0,%o0 ! clear cy_limb
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Loop: ld [%o1+%o2],%o4
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ld [%g1+%o2],%g2
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umul %o4,%o3,%o5
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rd %y,%g3
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addcc %o5,%o0,%o5
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addx %g3,0,%o0
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subcc %g2,%o5,%g2
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addx %o0,0,%o0
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st %g2,[%g1+%o2]
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addcc %o2,4,%o2
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bne Loop
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nop
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retl
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nop
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