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Annotation of OpenXM/src/kan96xx/gmp-2.0.2-ssh-2/mpn/alpha/sub_n.s, Revision 1.1.1.1

1.1       takayama    1:  # Alpha __mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
                      2:  # store difference in a third limb vector.
                      3:
                      4:  # Copyright (C) 1995 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     $16
                     26:  # s1_ptr      $17
                     27:  # s2_ptr      $18
                     28:  # size                $19
                     29:
                     30:        .set    noreorder
                     31:        .set    noat
                     32: .text
                     33:        .align  3
                     34:        .globl  __mpn_sub_n
                     35:        .ent    __mpn_sub_n
                     36: __mpn_sub_n:
                     37:        .frame  $30,0,$26,0
                     38:
                     39:        ldq     $3,0($17)
                     40:        ldq     $4,0($18)
                     41:
                     42:        subq    $19,1,$19
                     43:        and     $19,4-1,$2      # number of limbs in first loop
                     44:        bis     $31,$31,$0
                     45:        beq     $2,.L0          # if multiple of 4 limbs, skip first loop
                     46:
                     47:        subq    $19,$2,$19
                     48:
                     49: .Loop0:        subq    $2,1,$2
                     50:        ldq     $5,8($17)
                     51:        addq    $4,$0,$4
                     52:        ldq     $6,8($18)
                     53:        cmpult  $4,$0,$1
                     54:        subq    $3,$4,$4
                     55:        cmpult  $3,$4,$0
                     56:        stq     $4,0($16)
                     57:        or      $0,$1,$0
                     58:
                     59:        addq    $17,8,$17
                     60:        addq    $18,8,$18
                     61:        bis     $5,$5,$3
                     62:        bis     $6,$6,$4
                     63:        addq    $16,8,$16
                     64:        bne     $2,.Loop0
                     65:
                     66: .L0:   beq     $19,.Lend
                     67:
                     68:        .align  3
                     69: .Loop: subq    $19,4,$19
                     70:
                     71:        ldq     $5,8($17)
                     72:        addq    $4,$0,$4
                     73:        ldq     $6,8($18)
                     74:        cmpult  $4,$0,$1
                     75:        subq    $3,$4,$4
                     76:        cmpult  $3,$4,$0
                     77:        stq     $4,0($16)
                     78:        or      $0,$1,$0
                     79:
                     80:        ldq     $3,16($17)
                     81:        addq    $6,$0,$6
                     82:        ldq     $4,16($18)
                     83:        cmpult  $6,$0,$1
                     84:        subq    $5,$6,$6
                     85:        cmpult  $5,$6,$0
                     86:        stq     $6,8($16)
                     87:        or      $0,$1,$0
                     88:
                     89:        ldq     $5,24($17)
                     90:        addq    $4,$0,$4
                     91:        ldq     $6,24($18)
                     92:        cmpult  $4,$0,$1
                     93:        subq    $3,$4,$4
                     94:        cmpult  $3,$4,$0
                     95:        stq     $4,16($16)
                     96:        or      $0,$1,$0
                     97:
                     98:        ldq     $3,32($17)
                     99:        addq    $6,$0,$6
                    100:        ldq     $4,32($18)
                    101:        cmpult  $6,$0,$1
                    102:        subq    $5,$6,$6
                    103:        cmpult  $5,$6,$0
                    104:        stq     $6,24($16)
                    105:        or      $0,$1,$0
                    106:
                    107:        addq    $17,32,$17
                    108:        addq    $18,32,$18
                    109:        addq    $16,32,$16
                    110:        bne     $19,.Loop
                    111:
                    112: .Lend: addq    $4,$0,$4
                    113:        cmpult  $4,$0,$1
                    114:        subq    $3,$4,$4
                    115:        cmpult  $3,$4,$0
                    116:        stq     $4,0($16)
                    117:        or      $0,$1,$0
                    118:        ret     $31,($26),1
                    119:
                    120:        .end    __mpn_sub_n