166 lines
3.3 KiB
ArmAsm
166 lines
3.3 KiB
ArmAsm
|
# Alpha 21064 __udiv_qrnnd
|
||
|
|
# Copyright (C) 1992, 1994, 1995, 2000 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
# This file is part of GCC.
|
||
|
|
|
||
|
|
# The GNU MP Library is free software; you can redistribute it and/or modify
|
||
|
|
# it under the terms of the GNU General Public License as published by
|
||
|
|
# the Free Software Foundation; either version 2 of the License, or (at your
|
||
|
|
# option) any later version.
|
||
|
|
|
||
|
|
# In addition to the permissions in the GNU General Public License, the
|
||
|
|
# Free Software Foundation gives you unlimited permission to link the
|
||
|
|
# compiled version of this file with other programs, and to distribute
|
||
|
|
# those programs without any restriction coming from the use of this
|
||
|
|
# file. (The General Public License restrictions do apply in other
|
||
|
|
# respects; for example, they cover modification of the file, and
|
||
|
|
# distribution when not linked into another program.)
|
||
|
|
|
||
|
|
# This file 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 General Public License
|
||
|
|
# along with GCC; see the file COPYING. If not, write to the
|
||
|
|
# Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
||
|
|
# MA 02111-1307, USA.
|
||
|
|
#include <asm/export.h>
|
||
|
|
|
||
|
|
.set noreorder
|
||
|
|
.set noat
|
||
|
|
|
||
|
|
.text
|
||
|
|
|
||
|
|
.globl __udiv_qrnnd
|
||
|
|
.ent __udiv_qrnnd
|
||
|
|
__udiv_qrnnd:
|
||
|
|
.frame $30,0,$26,0
|
||
|
|
.prologue 0
|
||
|
|
|
||
|
|
#define cnt $2
|
||
|
|
#define tmp $3
|
||
|
|
#define rem_ptr $16
|
||
|
|
#define n1 $17
|
||
|
|
#define n0 $18
|
||
|
|
#define d $19
|
||
|
|
#define qb $20
|
||
|
|
#define AT $at
|
||
|
|
|
||
|
|
ldiq cnt,16
|
||
|
|
blt d,$largedivisor
|
||
|
|
|
||
|
|
$loop1: cmplt n0,0,tmp
|
||
|
|
addq n1,n1,n1
|
||
|
|
bis n1,tmp,n1
|
||
|
|
addq n0,n0,n0
|
||
|
|
cmpule d,n1,qb
|
||
|
|
subq n1,d,tmp
|
||
|
|
cmovne qb,tmp,n1
|
||
|
|
bis n0,qb,n0
|
||
|
|
cmplt n0,0,tmp
|
||
|
|
addq n1,n1,n1
|
||
|
|
bis n1,tmp,n1
|
||
|
|
addq n0,n0,n0
|
||
|
|
cmpule d,n1,qb
|
||
|
|
subq n1,d,tmp
|
||
|
|
cmovne qb,tmp,n1
|
||
|
|
bis n0,qb,n0
|
||
|
|
cmplt n0,0,tmp
|
||
|
|
addq n1,n1,n1
|
||
|
|
bis n1,tmp,n1
|
||
|
|
addq n0,n0,n0
|
||
|
|
cmpule d,n1,qb
|
||
|
|
subq n1,d,tmp
|
||
|
|
cmovne qb,tmp,n1
|
||
|
|
bis n0,qb,n0
|
||
|
|
cmplt n0,0,tmp
|
||
|
|
addq n1,n1,n1
|
||
|
|
bis n1,tmp,n1
|
||
|
|
addq n0,n0,n0
|
||
|
|
cmpule d,n1,qb
|
||
|
|
subq n1,d,tmp
|
||
|
|
cmovne qb,tmp,n1
|
||
|
|
bis n0,qb,n0
|
||
|
|
subq cnt,1,cnt
|
||
|
|
bgt cnt,$loop1
|
||
|
|
stq n1,0(rem_ptr)
|
||
|
|
bis $31,n0,$0
|
||
|
|
ret $31,($26),1
|
||
|
|
|
||
|
|
$largedivisor:
|
||
|
|
and n0,1,$4
|
||
|
|
|
||
|
|
srl n0,1,n0
|
||
|
|
sll n1,63,tmp
|
||
|
|
or tmp,n0,n0
|
||
|
|
srl n1,1,n1
|
||
|
|
|
||
|
|
and d,1,$6
|
||
|
|
srl d,1,$5
|
||
|
|
addq $5,$6,$5
|
||
|
|
|
||
|
|
$loop2: cmplt n0,0,tmp
|
||
|
|
addq n1,n1,n1
|
||
|
|
bis n1,tmp,n1
|
||
|
|
addq n0,n0,n0
|
||
|
|
cmpule $5,n1,qb
|
||
|
|
subq n1,$5,tmp
|
||
|
|
cmovne qb,tmp,n1
|
||
|
|
bis n0,qb,n0
|
||
|
|
cmplt n0,0,tmp
|
||
|
|
addq n1,n1,n1
|
||
|
|
bis n1,tmp,n1
|
||
|
|
addq n0,n0,n0
|
||
|
|
cmpule $5,n1,qb
|
||
|
|
subq n1,$5,tmp
|
||
|
|
cmovne qb,tmp,n1
|
||
|
|
bis n0,qb,n0
|
||
|
|
cmplt n0,0,tmp
|
||
|
|
addq n1,n1,n1
|
||
|
|
bis n1,tmp,n1
|
||
|
|
addq n0,n0,n0
|
||
|
|
cmpule $5,n1,qb
|
||
|
|
subq n1,$5,tmp
|
||
|
|
cmovne qb,tmp,n1
|
||
|
|
bis n0,qb,n0
|
||
|
|
cmplt n0,0,tmp
|
||
|
|
addq n1,n1,n1
|
||
|
|
bis n1,tmp,n1
|
||
|
|
addq n0,n0,n0
|
||
|
|
cmpule $5,n1,qb
|
||
|
|
subq n1,$5,tmp
|
||
|
|
cmovne qb,tmp,n1
|
||
|
|
bis n0,qb,n0
|
||
|
|
subq cnt,1,cnt
|
||
|
|
bgt cnt,$loop2
|
||
|
|
|
||
|
|
addq n1,n1,n1
|
||
|
|
addq $4,n1,n1
|
||
|
|
bne $6,$Odd
|
||
|
|
stq n1,0(rem_ptr)
|
||
|
|
bis $31,n0,$0
|
||
|
|
ret $31,($26),1
|
||
|
|
|
||
|
|
$Odd:
|
||
|
|
/* q' in n0. r' in n1 */
|
||
|
|
addq n1,n0,n1
|
||
|
|
|
||
|
|
cmpult n1,n0,tmp # tmp := carry from addq
|
||
|
|
subq n1,d,AT
|
||
|
|
addq n0,tmp,n0
|
||
|
|
cmovne tmp,AT,n1
|
||
|
|
|
||
|
|
cmpult n1,d,tmp
|
||
|
|
addq n0,1,AT
|
||
|
|
cmoveq tmp,AT,n0
|
||
|
|
subq n1,d,AT
|
||
|
|
cmoveq tmp,AT,n1
|
||
|
|
|
||
|
|
stq n1,0(rem_ptr)
|
||
|
|
bis $31,n0,$0
|
||
|
|
ret $31,($26),1
|
||
|
|
|
||
|
|
.end __udiv_qrnnd
|
||
|
|
EXPORT_SYMBOL(__udiv_qrnnd)
|