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