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Annotation of OpenXM_contrib/gmp/mpn/mips2/sub_n.s, Revision 1.1

1.1     ! maekawa     1:  # MIPS2 __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:        lw      $10,0($5)
        !            39:        lw      $11,0($6)
        !            40:
        !            41:        addiu   $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:        subu    $7,$7,$9
        !            47:
        !            48: .Loop0:        addiu   $9,$9,-1
        !            49:        lw      $12,4($5)
        !            50:        addu    $11,$11,$2
        !            51:        lw      $13,4($6)
        !            52:        sltu    $8,$11,$2
        !            53:        subu    $11,$10,$11
        !            54:        sltu    $2,$10,$11
        !            55:        sw      $11,0($4)
        !            56:        or      $2,$2,$8
        !            57:
        !            58:        addiu   $5,$5,4
        !            59:        addiu   $6,$6,4
        !            60:        move    $10,$12
        !            61:        move    $11,$13
        !            62:        bne     $9,$0,.Loop0
        !            63:         addiu  $4,$4,4
        !            64:
        !            65: .L0:   beq     $7,$0,.Lend
        !            66:         nop
        !            67:
        !            68: .Loop: addiu   $7,$7,-4
        !            69:
        !            70:        lw      $12,4($5)
        !            71:        addu    $11,$11,$2
        !            72:        lw      $13,4($6)
        !            73:        sltu    $8,$11,$2
        !            74:        subu    $11,$10,$11
        !            75:        sltu    $2,$10,$11
        !            76:        sw      $11,0($4)
        !            77:        or      $2,$2,$8
        !            78:
        !            79:        lw      $10,8($5)
        !            80:        addu    $13,$13,$2
        !            81:        lw      $11,8($6)
        !            82:        sltu    $8,$13,$2
        !            83:        subu    $13,$12,$13
        !            84:        sltu    $2,$12,$13
        !            85:        sw      $13,4($4)
        !            86:        or      $2,$2,$8
        !            87:
        !            88:        lw      $12,12($5)
        !            89:        addu    $11,$11,$2
        !            90:        lw      $13,12($6)
        !            91:        sltu    $8,$11,$2
        !            92:        subu    $11,$10,$11
        !            93:        sltu    $2,$10,$11
        !            94:        sw      $11,8($4)
        !            95:        or      $2,$2,$8
        !            96:
        !            97:        lw      $10,16($5)
        !            98:        addu    $13,$13,$2
        !            99:        lw      $11,16($6)
        !           100:        sltu    $8,$13,$2
        !           101:        subu    $13,$12,$13
        !           102:        sltu    $2,$12,$13
        !           103:        sw      $13,12($4)
        !           104:        or      $2,$2,$8
        !           105:
        !           106:        addiu   $5,$5,16
        !           107:        addiu   $6,$6,16
        !           108:
        !           109:        bne     $7,$0,.Loop
        !           110:         addiu  $4,$4,16
        !           111:
        !           112: .Lend: addu    $11,$11,$2
        !           113:        sltu    $8,$11,$2
        !           114:        subu    $11,$10,$11
        !           115:        sltu    $2,$10,$11
        !           116:        sw      $11,0($4)
        !           117:        j       $31
        !           118:        or      $2,$2,$8
        !           119:
        !           120:        .end    __mpn_sub_n