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Annotation of OpenXM_contrib/gmp/mpn/ns32k/mul_1.s, Revision 1.1.1.1

1.1       maekawa     1: # ns32000 __mpn_mul_1 -- Multiply a limb vector with a limb and store
                      2: # the result in a second limb vector.
                      3:
                      4: # Copyright (C) 1992, 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:        .align 1
                     25: .globl ___mpn_mul_1
                     26: ___mpn_mul_1:
                     27:        save    [r3,r4,r5,r6,r7]
                     28:        negd    24(sp),r4
                     29:        movd    r4,r0
                     30:        lshd    2,r0
                     31:        movd    20(sp),r5
                     32:        subd    r0,r5                   # r5 -> to end of S1
                     33:        movd    16(sp),r6
                     34:        subd    r0,r6                   # r6 -> to end of RES
                     35:        subd    r0,r0                   # r0 = 0, cy = 0
                     36:        movd    28(sp),r7               # r7 = s2_limb
                     37:
                     38: Loop:  movd    r5[r4:d],r2
                     39:        meid    r7,r2                   # r2 = low_prod, r3 = high_prod
                     40:        addcd   r0,r2                   # r2 = low_prod + cy_limb
                     41:        movd    r3,r0                   # r0 = new cy_limb
                     42:        movd    r2,r6[r4:d]
                     43:        acbd    1,r4,Loop
                     44:
                     45:        addcd   0,r0
                     46:        restore [r7,r6,r5,r4,r3]
                     47:        ret     0