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Annotation of OpenXM_contrib/gmp/mpn/sparc32/v8/submul_1.S, Revision 1.1.1.1

1.1       maekawa     1: ! SPARC v8 __mpn_submul_1 -- Multiply a limb vector with a limb and
                      2: ! subtract the result from a second limb vector.
                      3:
                      4: ! Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
                      5:
                      6: ! This file is part of the GNU MP Library.
                      7:
                      8: ! The GNU MP Library is free software; you can redistribute it and/or modify
                      9: ! it under the terms of the GNU Library General Public License as published by
                     10: ! the Free Software Foundation; either version 2 of the License, or (at your
                     11: ! option) any later version.
                     12:
                     13: ! The GNU MP Library is distributed in the hope that it will be useful, but
                     14: ! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     15: ! or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
                     16: ! License for more details.
                     17:
                     18: ! You should have received a copy of the GNU Library General Public License
                     19: ! along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     20: ! the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     21: ! MA 02111-1307, USA.
                     22:
                     23:
                     24: ! INPUT PARAMETERS
                     25: ! res_ptr      o0
                     26: ! s1_ptr       o1
                     27: ! size         o2
                     28: ! s2_limb      o3
                     29:
                     30: #include "sysdep.h"
                     31:
                     32: .text
                     33:        .align 4
                     34:        .global C_SYMBOL_NAME(__mpn_submul_1)
                     35: C_SYMBOL_NAME(__mpn_submul_1):
                     36:        sub     %g0,%o2,%o2             ! negate ...
                     37:        sll     %o2,2,%o2               ! ... and scale size
                     38:        sub     %o1,%o2,%o1             ! o1 is offset s1_ptr
                     39:        sub     %o0,%o2,%g1             ! g1 is offset res_ptr
                     40:
                     41:        mov     0,%o0                   ! clear cy_limb
                     42:
                     43: Loop:  ld      [%o1+%o2],%o4
                     44:        ld      [%g1+%o2],%g2
                     45:        umul    %o4,%o3,%o5
                     46:        rd      %y,%g3
                     47:        addcc   %o5,%o0,%o5
                     48:        addx    %g3,0,%o0
                     49:        subcc   %g2,%o5,%g2
                     50:        addx    %o0,0,%o0
                     51:        st      %g2,[%g1+%o2]
                     52:
                     53:        addcc   %o2,4,%o2
                     54:        bne     Loop
                     55:         nop
                     56:
                     57:        retl
                     58:         nop