95 lines
2.0 KiB
ArmAsm
95 lines
2.0 KiB
ArmAsm
|
# MIPS2 __mpn_lshift --
|
||
|
|
|
||
|
|
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
|
|
||
|
|
|
||
|
|
# INPUT PARAMETERS
|
||
|
|
# res_ptr $4
|
||
|
|
# src_ptr $5
|
||
|
|
# size $6
|
||
|
|
# cnt $7
|
||
|
|
|
||
|
|
.text
|
||
|
|
.align 2
|
||
|
|
.globl __mpn_lshift
|
||
|
|
.ent __mpn_lshift
|
||
|
|
__mpn_lshift:
|
||
|
|
.set noreorder
|
||
|
|
.set nomacro
|
||
|
|
|
||
|
|
sll $2,$6,2
|
||
|
|
addu $5,$5,$2 # make r5 point at end of src
|
||
|
|
lw $10,-4($5) # load first limb
|
||
|
|
subu $13,$0,$7
|
||
|
|
addu $4,$4,$2 # make r4 point at end of res
|
||
|
|
addiu $6,$6,-1
|
||
|
|
and $9,$6,4-1 # number of limbs in first loop
|
||
|
|
beq $9,$0,.L0 # if multiple of 4 limbs, skip first loop
|
||
|
|
srl $2,$10,$13 # compute function result
|
||
|
|
|
||
|
|
subu $6,$6,$9
|
||
|
|
|
||
|
|
.Loop0: lw $3,-8($5)
|
||
|
|
addiu $4,$4,-4
|
||
|
|
addiu $5,$5,-4
|
||
|
|
addiu $9,$9,-1
|
||
|
|
sll $11,$10,$7
|
||
|
|
srl $12,$3,$13
|
||
|
|
move $10,$3
|
||
|
|
or $8,$11,$12
|
||
|
|
bne $9,$0,.Loop0
|
||
|
|
sw $8,0($4)
|
||
|
|
|
||
|
|
.L0: beq $6,$0,.Lend
|
||
|
|
nop
|
||
|
|
|
||
|
|
.Loop: lw $3,-8($5)
|
||
|
|
addiu $4,$4,-16
|
||
|
|
addiu $6,$6,-4
|
||
|
|
sll $11,$10,$7
|
||
|
|
srl $12,$3,$13
|
||
|
|
|
||
|
|
lw $10,-12($5)
|
||
|
|
sll $14,$3,$7
|
||
|
|
or $8,$11,$12
|
||
|
|
sw $8,12($4)
|
||
|
|
srl $9,$10,$13
|
||
|
|
|
||
|
|
lw $3,-16($5)
|
||
|
|
sll $11,$10,$7
|
||
|
|
or $8,$14,$9
|
||
|
|
sw $8,8($4)
|
||
|
|
srl $12,$3,$13
|
||
|
|
|
||
|
|
lw $10,-20($5)
|
||
|
|
sll $14,$3,$7
|
||
|
|
or $8,$11,$12
|
||
|
|
sw $8,4($4)
|
||
|
|
srl $9,$10,$13
|
||
|
|
|
||
|
|
addiu $5,$5,-16
|
||
|
|
or $8,$14,$9
|
||
|
|
bgtz $6,.Loop
|
||
|
|
sw $8,0($4)
|
||
|
|
|
||
|
|
.Lend: sll $8,$10,$7
|
||
|
|
j $31
|
||
|
|
sw $8,-4($4)
|
||
|
|
.end __mpn_lshift
|