| ! 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 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 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 Lesser General Public |
| ! License for more details. |
| |
| ! You should have received a copy of the GNU Lesser 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> |
| |
| ENTRY(__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 |
| |
| LOC(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 LOC(loop) |
| nop |
| |
| retl |
| nop |
| |
| END(__mpn_submul_1) |