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

1.1     ! maekawa     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