mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-14 17:11:06 +00:00
160 lines
2.7 KiB
ArmAsm
160 lines
2.7 KiB
ArmAsm
# Alpha 21064 __udiv_qrnnd
|
|
|
|
# Copyright (C) 1992-2015 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 Lesser General Public License as published by
|
|
# the Free Software Foundation; either version 2.1 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 Lesser General Public
|
|
# License for more details.
|
|
|
|
# You should have received a copy of the GNU Lesser General Public License
|
|
# along with the GNU MP Library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
#include <sysdep.h>
|
|
|
|
.set noreorder
|
|
.set noat
|
|
|
|
.text
|
|
|
|
LEAF(__udiv_qrnnd, 0)
|
|
#ifdef PROF
|
|
ldgp gp, 0(pv)
|
|
lda AT, _mcount
|
|
jsr AT, (AT), _mcount
|
|
.prologue 1
|
|
#else
|
|
.prologue 0
|
|
#endif
|
|
|
|
#define cnt $2
|
|
#define tmp $3
|
|
#define rem_ptr $16
|
|
#define n1 $17
|
|
#define n0 $18
|
|
#define d $19
|
|
#define qb $20
|
|
|
|
ldiq cnt,16
|
|
blt d,$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
|