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Annotation of OpenXM_contrib/gmp/mpn/mips3/sub_n.s, Revision 1.1.1.1

1.1       maekawa     1:  # MIPS3 __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     $4
                     26:  # s1_ptr      $5
                     27:  # s2_ptr      $6
                     28:  # size                $7
                     29:
                     30:        .text
                     31:        .align  2
                     32:        .globl  __mpn_sub_n
                     33:        .ent    __mpn_sub_n
                     34: __mpn_sub_n:
                     35:        .set    noreorder
                     36:        .set    nomacro
                     37:
                     38:        ld      $10,0($5)
                     39:        ld      $11,0($6)
                     40:
                     41:        daddiu  $7,$7,-1
                     42:        and     $9,$7,4-1       # number of limbs in first loop
                     43:        beq     $9,$0,.L0       # if multiple of 4 limbs, skip first loop
                     44:         move   $2,$0
                     45:
                     46:        dsubu   $7,$7,$9
                     47:
                     48: .Loop0:        daddiu  $9,$9,-1
                     49:        ld      $12,8($5)
                     50:        daddu   $11,$11,$2
                     51:        ld      $13,8($6)
                     52:        sltu    $8,$11,$2
                     53:        dsubu   $11,$10,$11
                     54:        sltu    $2,$10,$11
                     55:        sd      $11,0($4)
                     56:        or      $2,$2,$8
                     57:
                     58:        daddiu  $5,$5,8
                     59:        daddiu  $6,$6,8
                     60:        move    $10,$12
                     61:        move    $11,$13
                     62:        bne     $9,$0,.Loop0
                     63:         daddiu $4,$4,8
                     64:
                     65: .L0:   beq     $7,$0,.Lend
                     66:         nop
                     67:
                     68: .Loop: daddiu  $7,$7,-4
                     69:
                     70:        ld      $12,8($5)
                     71:        daddu   $11,$11,$2
                     72:        ld      $13,8($6)
                     73:        sltu    $8,$11,$2
                     74:        dsubu   $11,$10,$11
                     75:        sltu    $2,$10,$11
                     76:        sd      $11,0($4)
                     77:        or      $2,$2,$8
                     78:
                     79:        ld      $10,16($5)
                     80:        daddu   $13,$13,$2
                     81:        ld      $11,16($6)
                     82:        sltu    $8,$13,$2
                     83:        dsubu   $13,$12,$13
                     84:        sltu    $2,$12,$13
                     85:        sd      $13,8($4)
                     86:        or      $2,$2,$8
                     87:
                     88:        ld      $12,24($5)
                     89:        daddu   $11,$11,$2
                     90:        ld      $13,24($6)
                     91:        sltu    $8,$11,$2
                     92:        dsubu   $11,$10,$11
                     93:        sltu    $2,$10,$11
                     94:        sd      $11,16($4)
                     95:        or      $2,$2,$8
                     96:
                     97:        ld      $10,32($5)
                     98:        daddu   $13,$13,$2
                     99:        ld      $11,32($6)
                    100:        sltu    $8,$13,$2
                    101:        dsubu   $13,$12,$13
                    102:        sltu    $2,$12,$13
                    103:        sd      $13,24($4)
                    104:        or      $2,$2,$8
                    105:
                    106:        daddiu  $5,$5,32
                    107:        daddiu  $6,$6,32
                    108:
                    109:        bne     $7,$0,.Loop
                    110:         daddiu $4,$4,32
                    111:
                    112: .Lend: daddu   $11,$11,$2
                    113:        sltu    $8,$11,$2
                    114:        dsubu   $11,$10,$11
                    115:        sltu    $2,$10,$11
                    116:        sd      $11,0($4)
                    117:        j       $31
                    118:        or      $2,$2,$8
                    119:
                    120:        .end    __mpn_sub_n