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Annotation of OpenXM_contrib/gmp/mpn/z8000/add_n.s, Revision 1.1.1.1

1.1       maekawa     1: ! Z8000 __mpn_add_n -- Add two limb vectors of equal, non-zero length.
                      2:
                      3: ! Copyright (C) 1993, 1994 Free Software Foundation, Inc.
                      4:
                      5: ! This file is part of the GNU MP Library.
                      6:
                      7: ! The GNU MP Library is free software; you can redistribute it and/or modify
                      8: ! it under the terms of the GNU Library General Public License as published by
                      9: ! the Free Software Foundation; either version 2 of the License, or (at your
                     10: ! option) any later version.
                     11:
                     12: ! The GNU MP Library is distributed in the hope that it will be useful, but
                     13: ! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     14: ! or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
                     15: ! License for more details.
                     16:
                     17: ! You should have received a copy of the GNU Library General Public License
                     18: ! along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     19: ! the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     20: ! MA 02111-1307, USA.
                     21:
                     22:
                     23: ! INPUT PARAMETERS
                     24: ! res_ptr      r7
                     25: ! s1_ptr       r6
                     26: ! s2_ptr       r5
                     27: ! size         r4
                     28:
                     29: ! If we are really crazy, we can use push to write a few result words
                     30: ! backwards, using push just because it is faster than reg+disp.  We'd
                     31: ! then add 2x the number of words written to r7...
                     32:
                     33:        unseg
                     34:        .text
                     35:        even
                     36:        global ___mpn_add_n
                     37: ___mpn_add_n:
                     38:        pop     r0,@r6
                     39:        pop     r1,@r5
                     40:        add     r0,r1
                     41:        ld      @r7,r0
                     42:        dec     r4
                     43:        jr      eq,Lend
                     44: Loop:  pop     r0,@r6
                     45:        pop     r1,@r5
                     46:        adc     r0,r1
                     47:        inc     r7,#2
                     48:        ld      @r7,r0
                     49:        dec     r4
                     50:        jr      ne,Loop
                     51: Lend:  ld      r2,r4           ! use 0 already in r4
                     52:        adc     r2,r2
                     53:        ret     t