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Annotation of OpenXM_contrib/gmp/mpn/mips32/add_n.asm, Revision 1.1

1.1     ! ohara       1: dnl  MIPS32 mpn_add_n -- Add two limb vectors of the same length > 0 and store
        !             2: dnl  sum in a third limb vector.
        !             3:
        !             4: dnl  Copyright 1995, 2000, 2002 Free Software Foundation, Inc.
        !             5:
        !             6: dnl  This file is part of the GNU MP Library.
        !             7:
        !             8: dnl  The GNU MP Library is free software; you can redistribute it and/or modify
        !             9: dnl  it under the terms of the GNU Lesser General Public License as published
        !            10: dnl  by the Free Software Foundation; either version 2.1 of the License, or (at
        !            11: dnl  your option) any later version.
        !            12:
        !            13: dnl  The GNU MP Library is distributed in the hope that it will be useful, but
        !            14: dnl  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            15: dnl  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
        !            16: dnl  License for more details.
        !            17:
        !            18: dnl  You should have received a copy of the GNU Lesser General Public License
        !            19: dnl  along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            20: dnl  the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            21: dnl  MA 02111-1307, USA.
        !            22:
        !            23: include(`../config.m4')
        !            24:
        !            25: C INPUT PARAMETERS
        !            26: C res_ptr      $4
        !            27: C s1_ptr       $5
        !            28: C s2_ptr       $6
        !            29: C size         $7
        !            30:
        !            31: ASM_START()
        !            32: PROLOGUE(mpn_add_n)
        !            33:
        !            34:        lw      $10,0($5)
        !            35:        lw      $11,0($6)
        !            36:
        !            37:        addiu   $7,$7,-1
        !            38:        and     $9,$7,4-1       C number of limbs in first loop
        !            39:        beq     $9,$0,.L0       C if multiple of 4 limbs, skip first loop
        !            40:         move   $2,$0
        !            41:
        !            42:        subu    $7,$7,$9
        !            43:
        !            44: .Loop0:        addiu   $9,$9,-1
        !            45:        lw      $12,4($5)
        !            46:        addu    $11,$11,$2
        !            47:        lw      $13,4($6)
        !            48:        sltu    $8,$11,$2
        !            49:        addu    $11,$10,$11
        !            50:        sltu    $2,$11,$10
        !            51:        sw      $11,0($4)
        !            52:        or      $2,$2,$8
        !            53:
        !            54:        addiu   $5,$5,4
        !            55:        addiu   $6,$6,4
        !            56:        move    $10,$12
        !            57:        move    $11,$13
        !            58:        bne     $9,$0,.Loop0
        !            59:         addiu  $4,$4,4
        !            60:
        !            61: .L0:   beq     $7,$0,.Lend
        !            62:         nop
        !            63:
        !            64: .Loop: addiu   $7,$7,-4
        !            65:
        !            66:        lw      $12,4($5)
        !            67:        addu    $11,$11,$2
        !            68:        lw      $13,4($6)
        !            69:        sltu    $8,$11,$2
        !            70:        addu    $11,$10,$11
        !            71:        sltu    $2,$11,$10
        !            72:        sw      $11,0($4)
        !            73:        or      $2,$2,$8
        !            74:
        !            75:        lw      $10,8($5)
        !            76:        addu    $13,$13,$2
        !            77:        lw      $11,8($6)
        !            78:        sltu    $8,$13,$2
        !            79:        addu    $13,$12,$13
        !            80:        sltu    $2,$13,$12
        !            81:        sw      $13,4($4)
        !            82:        or      $2,$2,$8
        !            83:
        !            84:        lw      $12,12($5)
        !            85:        addu    $11,$11,$2
        !            86:        lw      $13,12($6)
        !            87:        sltu    $8,$11,$2
        !            88:        addu    $11,$10,$11
        !            89:        sltu    $2,$11,$10
        !            90:        sw      $11,8($4)
        !            91:        or      $2,$2,$8
        !            92:
        !            93:        lw      $10,16($5)
        !            94:        addu    $13,$13,$2
        !            95:        lw      $11,16($6)
        !            96:        sltu    $8,$13,$2
        !            97:        addu    $13,$12,$13
        !            98:        sltu    $2,$13,$12
        !            99:        sw      $13,12($4)
        !           100:        or      $2,$2,$8
        !           101:
        !           102:        addiu   $5,$5,16
        !           103:        addiu   $6,$6,16
        !           104:
        !           105:        bne     $7,$0,.Loop
        !           106:         addiu  $4,$4,16
        !           107:
        !           108: .Lend: addu    $11,$11,$2
        !           109:        sltu    $8,$11,$2
        !           110:        addu    $11,$10,$11
        !           111:        sltu    $2,$11,$10
        !           112:        sw      $11,0($4)
        !           113:        j       $31
        !           114:        or      $2,$2,$8
        !           115: EPILOGUE(mpn_add_n)