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Annotation of OpenXM_contrib/gmp/mpn/sparc32/v8/submul_1.asm, Revision 1.1.1.2

1.1       maekawa     1: dnl  SPARC v8 mpn_submul_1 -- Multiply a limb vector with a limb and
                      2: dnl  subtract the result from a second limb vector.
                      3:
1.1.1.2 ! ohara       4: dnl  Copyright 1992, 1993, 1994, 2000 Free Software Foundation, Inc.
1.1       maekawa     5:
                      6: dnl  This file is part of the GNU MP Library.
                      7:
                      8: dnl  The GNU MP Library is free software; you can redistribute it and/or modify
                      9: dnl  it under the terms of the GNU Lesser General Public License as published
                     10: dnl  by the Free Software Foundation; either version 2.1 of the License, or (at
                     11: dnl  your option) any later version.
                     12:
                     13: dnl  The GNU MP Library is distributed in the hope that it will be useful, but
                     14: dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     15: dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
                     16: dnl  License for more details.
                     17:
                     18: dnl  You should have received a copy of the GNU Lesser General Public License
                     19: dnl  along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     20: dnl  the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     21: dnl  MA 02111-1307, USA.
                     22:
                     23:
                     24: include(`../config.m4')
                     25:
                     26: C INPUT PARAMETERS
                     27: C res_ptr      o0
                     28: C s1_ptr       o1
                     29: C size         o2
                     30: C s2_limb      o3
                     31:
                     32: ASM_START()
                     33: PROLOGUE(mpn_submul_1)
                     34:        sub     %g0,%o2,%o2             C negate ...
                     35:        sll     %o2,2,%o2               C ... and scale size
                     36:        sub     %o1,%o2,%o1             C o1 is offset s1_ptr
                     37:        sub     %o0,%o2,%g1             C g1 is offset res_ptr
                     38:
                     39:        mov     0,%o0                   C clear cy_limb
                     40:
                     41: L(loop):
                     42:        ld      [%o1+%o2],%o4
                     43:        ld      [%g1+%o2],%g2
                     44:        umul    %o4,%o3,%o5
                     45:        rd      %y,%g3
                     46:        addcc   %o5,%o0,%o5
                     47:        addx    %g3,0,%o0
                     48:        subcc   %g2,%o5,%g2
                     49:        addx    %o0,0,%o0
                     50:        st      %g2,[%g1+%o2]
                     51:
                     52:        addcc   %o2,4,%o2
                     53:        bne     L(loop)
                     54:         nop
                     55:
                     56:        retl
                     57:         nop
                     58: EPILOGUE(mpn_submul_1)