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-/* mc68020 __mpn_add_n -- Add two limb vectors of the same length > 0 and store
- sum in a third limb vector.
-
-Copyright (C) 1992, 1994, 1996, 1998 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 (sp + 4)
- s1_ptr (sp + 8)
- s2_ptr (sp + 16)
- size (sp + 12)
-*/
-
-#include "sysdep.h"
-#include "asm-syntax.h"
-
- TEXT
-ENTRY(__mpn_add_n)
-/* Save used registers on the stack. */
- movel R(d2),MEM_PREDEC(sp)
- movel R(a2),MEM_PREDEC(sp)
-
-/* Copy the arguments to registers. Better use movem? */
- movel MEM_DISP(sp,12),R(a2)
- movel MEM_DISP(sp,16),R(a0)
- movel MEM_DISP(sp,20),R(a1)
- movel MEM_DISP(sp,24),R(d2)
-
- eorw #1,R(d2)
- lsrl #1,R(d2)
- bcc L(L1)
- subql #1,R(d2) /* clears cy as side effect */
-
-L(Loop:)
- movel MEM_POSTINC(a0),R(d0)
- movel MEM_POSTINC(a1),R(d1)
- addxl R(d1),R(d0)
- movel R(d0),MEM_POSTINC(a2)
-L(L1:) movel MEM_POSTINC(a0),R(d0)
- movel MEM_POSTINC(a1),R(d1)
- addxl R(d1),R(d0)
- movel R(d0),MEM_POSTINC(a2)
-
- dbf R(d2),L(Loop) /* loop until 16 lsb of %4 == -1 */
- subxl R(d0),R(d0) /* d0 <= -cy; save cy as 0 or -1 in d0 */
- subl #0x10000,R(d2)
- bcs L(L2)
- addl R(d0),R(d0) /* restore cy */
- bra L(Loop)
-
-L(L2:)
- negl R(d0)
-
-/* Restore used registers from stack frame. */
- movel MEM_POSTINC(sp),R(a2)
- movel MEM_POSTINC(sp),R(d2)
-
- rts
-END(__mpn_add_n)