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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., 675 Mass Ave, Cambridge, MA 02139, 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
-