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Annotation of OpenXM_contrib/gmp/mpn/mips3/lshift.s, Revision 1.1.1.2

1.1.1.2 ! maekawa     1:  # MIPS3 __gmpn_lshift --
1.1       maekawa     2:
1.1.1.2 ! maekawa     3:  # Copyright (C) 1995, 2000 Free Software Foundation, Inc.
1.1       maekawa     4:
                      5:  # This file is part of the GNU MP Library.
                      6:
                      7:  # The GNU MP Library is free software; you can redistribute it and/or modify
1.1.1.2 ! maekawa     8:  # it under the terms of the GNU Lesser General Public License as published by
        !             9:  # the Free Software Foundation; either version 2.1 of the License, or (at your
1.1       maekawa    10:  # option) any later version.
                     11:
                     12:  # The GNU MP Library is distributed in the hope that it will be useful, but
                     13:  # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
1.1.1.2 ! maekawa    14:  # or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
1.1       maekawa    15:  # License for more details.
                     16:
1.1.1.2 ! maekawa    17:  # You should have received a copy of the GNU Lesser General Public License
1.1       maekawa    18:  # along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     19:  # the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     20:  # MA 02111-1307, USA.
                     21:
                     22:
                     23:  # INPUT PARAMETERS
                     24:  # res_ptr     $4
                     25:  # src_ptr     $5
                     26:  # size                $6
                     27:  # cnt         $7
                     28:
                     29:        .text
                     30:        .align  2
1.1.1.2 ! maekawa    31:        .globl  __gmpn_lshift
        !            32:        .ent    __gmpn_lshift
        !            33: __gmpn_lshift:
1.1       maekawa    34:        .set    noreorder
                     35:        .set    nomacro
                     36:
                     37:        dsll    $2,$6,3
                     38:        daddu   $5,$5,$2        # make r5 point at end of src
                     39:        ld      $10,-8($5)      # load first limb
                     40:        dsubu   $13,$0,$7
                     41:        daddu   $4,$4,$2        # make r4 point at end of res
                     42:        daddiu  $6,$6,-1
                     43:        and     $9,$6,4-1       # number of limbs in first loop
                     44:        beq     $9,$0,.L0       # if multiple of 4 limbs, skip first loop
                     45:         dsrl   $2,$10,$13      # compute function result
                     46:
                     47:        dsubu   $6,$6,$9
                     48:
                     49: .Loop0:        ld      $3,-16($5)
                     50:        daddiu  $4,$4,-8
                     51:        daddiu  $5,$5,-8
                     52:        daddiu  $9,$9,-1
                     53:        dsll    $11,$10,$7
                     54:        dsrl    $12,$3,$13
                     55:        move    $10,$3
                     56:        or      $8,$11,$12
                     57:        bne     $9,$0,.Loop0
                     58:         sd     $8,0($4)
                     59:
                     60: .L0:   beq     $6,$0,.Lend
                     61:         nop
                     62:
                     63: .Loop: ld      $3,-16($5)
                     64:        daddiu  $4,$4,-32
                     65:        daddiu  $6,$6,-4
                     66:        dsll    $11,$10,$7
                     67:        dsrl    $12,$3,$13
                     68:
                     69:        ld      $10,-24($5)
                     70:        dsll    $14,$3,$7
                     71:        or      $8,$11,$12
                     72:        sd      $8,24($4)
                     73:        dsrl    $9,$10,$13
                     74:
                     75:        ld      $3,-32($5)
                     76:        dsll    $11,$10,$7
                     77:        or      $8,$14,$9
                     78:        sd      $8,16($4)
                     79:        dsrl    $12,$3,$13
                     80:
                     81:        ld      $10,-40($5)
                     82:        dsll    $14,$3,$7
                     83:        or      $8,$11,$12
                     84:        sd      $8,8($4)
                     85:        dsrl    $9,$10,$13
                     86:
                     87:        daddiu  $5,$5,-32
                     88:        or      $8,$14,$9
                     89:        bgtz    $6,.Loop
                     90:         sd     $8,0($4)
                     91:
                     92: .Lend: dsll    $8,$10,$7
                     93:        j       $31
                     94:        sd      $8,-8($4)
1.1.1.2 ! maekawa    95:        .end    __gmpn_lshift