mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-17 02:20:10 +00:00
93 lines
1.9 KiB
ArmAsm
93 lines
1.9 KiB
ArmAsm
# MIPS2 __mpn_rshift --
|
|
|
|
# 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
|
|
# src_ptr $5
|
|
# size $6
|
|
# cnt $7
|
|
|
|
.text
|
|
.align 2
|
|
.globl __mpn_rshift
|
|
.ent __mpn_rshift
|
|
__mpn_rshift:
|
|
.set noreorder
|
|
.set nomacro
|
|
|
|
lw $10,0($5) # load first limb
|
|
subu $13,$0,$7
|
|
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
|
|
sll $2,$10,$13 # compute function result
|
|
|
|
subu $6,$6,$9
|
|
|
|
.Loop0: lw $3,4($5)
|
|
addiu $4,$4,4
|
|
addiu $5,$5,4
|
|
addiu $9,$9,-1
|
|
srl $11,$10,$7
|
|
sll $12,$3,$13
|
|
move $10,$3
|
|
or $8,$11,$12
|
|
bne $9,$0,.Loop0
|
|
sw $8,-4($4)
|
|
|
|
.L0: beq $6,$0,.Lend
|
|
nop
|
|
|
|
.Loop: lw $3,4($5)
|
|
addiu $4,$4,16
|
|
addiu $6,$6,-4
|
|
srl $11,$10,$7
|
|
sll $12,$3,$13
|
|
|
|
lw $10,8($5)
|
|
srl $14,$3,$7
|
|
or $8,$11,$12
|
|
sw $8,-16($4)
|
|
sll $9,$10,$13
|
|
|
|
lw $3,12($5)
|
|
srl $11,$10,$7
|
|
or $8,$14,$9
|
|
sw $8,-12($4)
|
|
sll $12,$3,$13
|
|
|
|
lw $10,16($5)
|
|
srl $14,$3,$7
|
|
or $8,$11,$12
|
|
sw $8,-8($4)
|
|
sll $9,$10,$13
|
|
|
|
addiu $5,$5,16
|
|
or $8,$14,$9
|
|
bgtz $6,.Loop
|
|
sw $8,-4($4)
|
|
|
|
.Lend: srl $8,$10,$7
|
|
j $31
|
|
sw $8,0($4)
|
|
.end __mpn_rshift
|