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Annotation of OpenXM_contrib/gmp/mpn/mips64/sub_n.asm, Revision 1.1

1.1     ! ohara       1: dnl  MIPS64 mpn_sub_n -- Subtract two limb vectors of the same length > 0 and
        !             2: dnl  store difference in a third limb vector.
        !             3:
        !             4: dnl  Copyright 1995, 2000, 2001, 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_sub_n)
        !            33:        ld      $10,0($5)
        !            34:        ld      $11,0($6)
        !            35:
        !            36:        daddiu  $7,$7,-1
        !            37:        and     $9,$7,4-1       C number of limbs in first loop
        !            38:        beq     $9,$0,.L0       C if multiple of 4 limbs, skip first loop
        !            39:         move   $2,$0
        !            40:
        !            41:        dsubu   $7,$7,$9
        !            42:
        !            43: .Loop0:        daddiu  $9,$9,-1
        !            44:        ld      $12,8($5)
        !            45:        daddu   $11,$11,$2
        !            46:        ld      $13,8($6)
        !            47:        sltu    $8,$11,$2
        !            48:        dsubu   $11,$10,$11
        !            49:        sltu    $2,$10,$11
        !            50:        sd      $11,0($4)
        !            51:        or      $2,$2,$8
        !            52:
        !            53:        daddiu  $5,$5,8
        !            54:        daddiu  $6,$6,8
        !            55:        move    $10,$12
        !            56:        move    $11,$13
        !            57:        bne     $9,$0,.Loop0
        !            58:         daddiu $4,$4,8
        !            59:
        !            60: .L0:   beq     $7,$0,.Lend
        !            61:         nop
        !            62:
        !            63: .Loop: daddiu  $7,$7,-4
        !            64:
        !            65:        ld      $12,8($5)
        !            66:        dsubu   $11,$10,$11
        !            67:        ld      $13,8($6)
        !            68:        sltu    $8,$10,$11
        !            69:        dsubu   $14,$11,$2
        !            70:        sltu    $2,$11,$14
        !            71:        sd      $14,0($4)
        !            72:        or      $2,$2,$8
        !            73:
        !            74:        ld      $10,16($5)
        !            75:        dsubu   $13,$12,$13
        !            76:        ld      $11,16($6)
        !            77:        sltu    $8,$12,$13
        !            78:        dsubu   $14,$13,$2
        !            79:        sltu    $2,$13,$14
        !            80:        sd      $14,8($4)
        !            81:        or      $2,$2,$8
        !            82:
        !            83:        ld      $12,24($5)
        !            84:        dsubu   $11,$10,$11
        !            85:        ld      $13,24($6)
        !            86:        sltu    $8,$10,$11
        !            87:        dsubu   $14,$11,$2
        !            88:        sltu    $2,$11,$14
        !            89:        sd      $14,16($4)
        !            90:        or      $2,$2,$8
        !            91:
        !            92:        ld      $10,32($5)
        !            93:        dsubu   $13,$12,$13
        !            94:        ld      $11,32($6)
        !            95:        sltu    $8,$12,$13
        !            96:        dsubu   $14,$13,$2
        !            97:        sltu    $2,$13,$14
        !            98:        sd      $14,24($4)
        !            99:        or      $2,$2,$8
        !           100:
        !           101:        daddiu  $5,$5,32
        !           102:        daddiu  $6,$6,32
        !           103:
        !           104:        bne     $7,$0,.Loop
        !           105:         daddiu $4,$4,32
        !           106:
        !           107: .Lend: daddu   $11,$11,$2
        !           108:        sltu    $8,$11,$2
        !           109:        dsubu   $11,$10,$11
        !           110:        sltu    $2,$10,$11
        !           111:        sd      $11,0($4)
        !           112:        j       $31
        !           113:        or      $2,$2,$8
        !           114: EPILOGUE(mpn_sub_n)