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| # 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.
|
| .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
|
|
