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- # MIPS2 __mpn_add_n -- Add two limb vectors of the same length > 0 and
- # store sum in a third limb vector.
-
- # Copyright (C) 1995 Free Software Foundation, Inc.
-
- # This file is part of the GNU MP Library.
-
- # The GNU MP Library is free software; you can redistribute it and/or modify
- # it under the terms of the GNU Library General Public License as published by
- # the Free Software Foundation; either version 2 of the License, or (at your
- # option) any later version.
-
- # The GNU MP Library is distributed in the hope that it will be useful, but
- # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
- # License for more details.
-
- # You should have received a copy of the GNU Library General Public License
- # along with the GNU MP Library; see the file COPYING.LIB. If not, write to
- # the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- # MA 02111-1307, USA.
-
-
- # INPUT PARAMETERS
- # res_ptr $4
- # s1_ptr $5
- # s2_ptr $6
- # size $7
-
- .text
- .align 2
- .globl __mpn_add_n
- .ent __mpn_add_n
-__mpn_add_n:
- .set noreorder
- .set nomacro
-
- lw $10,0($5)
- lw $11,0($6)
-
- addiu $7,$7,-1
- and $9,$7,4-1 # number of limbs in first loop
- beq $9,$0,.L0 # if multiple of 4 limbs, skip first loop
- move $2,$0
-
- subu $7,$7,$9
-
-.Loop0: addiu $9,$9,-1
- lw $12,4($5)
- addu $11,$11,$2
- lw $13,4($6)
- sltu $8,$11,$2
- addu $11,$10,$11
- sltu $2,$11,$10
- sw $11,0($4)
- or $2,$2,$8
-
- addiu $5,$5,4
- addiu $6,$6,4
- move $10,$12
- move $11,$13
- bne $9,$0,.Loop0
- addiu $4,$4,4
-
-.L0: beq $7,$0,.Lend
- nop
-
-.Loop: addiu $7,$7,-4
-
- lw $12,4($5)
- addu $11,$11,$2
- lw $13,4($6)
- sltu $8,$11,$2
- addu $11,$10,$11
- sltu $2,$11,$10
- sw $11,0($4)
- or $2,$2,$8
-
- lw $10,8($5)
- addu $13,$13,$2
- lw $11,8($6)
- sltu $8,$13,$2
- addu $13,$12,$13
- sltu $2,$13,$12
- sw $13,4($4)
- or $2,$2,$8
-
- lw $12,12($5)
- addu $11,$11,$2
- lw $13,12($6)
- sltu $8,$11,$2
- addu $11,$10,$11
- sltu $2,$11,$10
- sw $11,8($4)
- or $2,$2,$8
-
- lw $10,16($5)
- addu $13,$13,$2
- lw $11,16($6)
- sltu $8,$13,$2
- addu $13,$12,$13
- sltu $2,$13,$12
- sw $13,12($4)
- or $2,$2,$8
-
- addiu $5,$5,16
- addiu $6,$6,16
-
- bne $7,$0,.Loop
- addiu $4,$4,16
-
-.Lend: addu $11,$11,$2
- sltu $8,$11,$2
- addu $11,$10,$11
- sltu $2,$11,$10
- sw $11,0($4)
- j $31
- or $2,$2,$8
-
- .end __mpn_add_n