1995-02-18 04:13:09 +08:00
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# Alpha 21064 __udiv_qrnnd
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1996-03-02 02:43:45 +08:00
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# Copyright (C) 1992, 1994, 1995 Free Software Foundation, Inc.
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1995-02-18 04:13:09 +08:00
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# This file is part of the GNU MP Library.
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# The GNU MP Library is free software; you can redistribute it and/or modify
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# it under the terms of the GNU Library General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or (at your
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# option) any later version.
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# The GNU MP Library is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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# License for more details.
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# You should have received a copy of the GNU Library General Public License
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# along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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1996-05-08 05:04:45 +08:00
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# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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# MA 02111-1307, USA.
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1995-02-18 04:13:09 +08:00
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Wed May 22 00:40:50 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/alpha/_mcount.S, sysdeps/alpha/bb_init_func.S,
sysdeps/alpha/bsd-setjmp.S, sysdeps/alpha/ffs.S,
sysdeps/alpha/htonl.S, sysdeps/alpha/htons.S, sysdeps/alpha/memchr.S,
sysdeps/alpha/setjmp.S, sysdeps/alpha/strlen.S,
sysdeps/alpha/udiv_qrnnd.S, sysdeps/unix/sysv/linux/alpha/brk.S,
sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
sysdeps/unix/sysv/linux/alpha/pipe.S,
sysdeps/unix/sysv/linux/sigsuspend.S,
sysdeps/unix/sysv/linux/alpha/syscall.S,
sysdeps/unix/sysv/linux/alpha/sysdep.S: Remove include of regdef.h.
sysdep.h includes it now. Replace ENTRY by LEAF with appropriate
framesize declaration. Replace "lda pv,sym/jsr pv" by "jsr sym".
1996-05-23 13:32:12 +08:00
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#include <sysdep.h>
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1995-02-18 04:13:09 +08:00
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.set noreorder
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.set noat
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Wed May 22 00:40:50 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/alpha/_mcount.S, sysdeps/alpha/bb_init_func.S,
sysdeps/alpha/bsd-setjmp.S, sysdeps/alpha/ffs.S,
sysdeps/alpha/htonl.S, sysdeps/alpha/htons.S, sysdeps/alpha/memchr.S,
sysdeps/alpha/setjmp.S, sysdeps/alpha/strlen.S,
sysdeps/alpha/udiv_qrnnd.S, sysdeps/unix/sysv/linux/alpha/brk.S,
sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
sysdeps/unix/sysv/linux/alpha/pipe.S,
sysdeps/unix/sysv/linux/sigsuspend.S,
sysdeps/unix/sysv/linux/alpha/syscall.S,
sysdeps/unix/sysv/linux/alpha/sysdep.S: Remove include of regdef.h.
sysdep.h includes it now. Replace ENTRY by LEAF with appropriate
framesize declaration. Replace "lda pv,sym/jsr pv" by "jsr sym".
1996-05-23 13:32:12 +08:00
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.text
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LEAF(__udiv_qrnnd, 0)
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1995-02-18 04:13:09 +08:00
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.prologue 0
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#define cnt $2
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#define tmp $3
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#define rem_ptr $16
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#define n1 $17
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#define n0 $18
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#define d $19
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#define qb $20
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ldiq cnt,16
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1996-03-02 02:43:45 +08:00
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blt d,.Largedivisor
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1995-02-18 04:13:09 +08:00
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1996-03-02 02:43:45 +08:00
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.Loop1: cmplt n0,0,tmp
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1995-02-18 04:13:09 +08:00
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addq n1,n1,n1
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bis n1,tmp,n1
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addq n0,n0,n0
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cmpule d,n1,qb
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subq n1,d,tmp
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cmovne qb,tmp,n1
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bis n0,qb,n0
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cmplt n0,0,tmp
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addq n1,n1,n1
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bis n1,tmp,n1
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addq n0,n0,n0
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cmpule d,n1,qb
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subq n1,d,tmp
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cmovne qb,tmp,n1
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bis n0,qb,n0
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cmplt n0,0,tmp
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addq n1,n1,n1
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bis n1,tmp,n1
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addq n0,n0,n0
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cmpule d,n1,qb
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subq n1,d,tmp
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cmovne qb,tmp,n1
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bis n0,qb,n0
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cmplt n0,0,tmp
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addq n1,n1,n1
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bis n1,tmp,n1
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addq n0,n0,n0
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cmpule d,n1,qb
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subq n1,d,tmp
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cmovne qb,tmp,n1
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bis n0,qb,n0
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subq cnt,1,cnt
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1996-03-02 02:43:45 +08:00
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bgt cnt,.Loop1
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1995-02-18 04:13:09 +08:00
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stq n1,0(rem_ptr)
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bis $31,n0,$0
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ret $31,($26),1
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1996-03-02 02:43:45 +08:00
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.Largedivisor:
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1995-02-18 04:13:09 +08:00
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and n0,1,$4
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srl n0,1,n0
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sll n1,63,tmp
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or tmp,n0,n0
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srl n1,1,n1
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and d,1,$6
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srl d,1,$5
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addq $5,$6,$5
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1996-03-02 02:43:45 +08:00
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.Loop2: cmplt n0,0,tmp
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1995-02-18 04:13:09 +08:00
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addq n1,n1,n1
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bis n1,tmp,n1
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addq n0,n0,n0
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cmpule $5,n1,qb
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subq n1,$5,tmp
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cmovne qb,tmp,n1
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bis n0,qb,n0
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cmplt n0,0,tmp
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addq n1,n1,n1
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bis n1,tmp,n1
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addq n0,n0,n0
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cmpule $5,n1,qb
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subq n1,$5,tmp
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cmovne qb,tmp,n1
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bis n0,qb,n0
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cmplt n0,0,tmp
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addq n1,n1,n1
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bis n1,tmp,n1
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addq n0,n0,n0
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cmpule $5,n1,qb
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subq n1,$5,tmp
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cmovne qb,tmp,n1
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bis n0,qb,n0
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cmplt n0,0,tmp
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addq n1,n1,n1
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bis n1,tmp,n1
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addq n0,n0,n0
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cmpule $5,n1,qb
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subq n1,$5,tmp
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cmovne qb,tmp,n1
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bis n0,qb,n0
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subq cnt,1,cnt
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1996-03-02 02:43:45 +08:00
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bgt cnt,.Loop2
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1995-02-18 04:13:09 +08:00
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addq n1,n1,n1
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addq $4,n1,n1
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1996-03-02 02:43:45 +08:00
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bne $6,.LOdd
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1995-02-18 04:13:09 +08:00
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stq n1,0(rem_ptr)
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bis $31,n0,$0
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ret $31,($26),1
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1996-03-02 02:43:45 +08:00
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.LOdd:
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1995-10-14 10:29:43 +08:00
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/* q' in n0. r' in n1 */
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1995-02-18 04:13:09 +08:00
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addq n1,n0,n1
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cmpult n1,n0,tmp # tmp := carry from addq
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1996-03-02 02:43:45 +08:00
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beq tmp,.LLp6
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1995-02-18 04:13:09 +08:00
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addq n0,1,n0
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subq n1,d,n1
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1996-03-02 02:43:45 +08:00
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.LLp6: cmpult n1,d,tmp
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bne tmp,.LLp7
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1995-02-18 04:13:09 +08:00
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addq n0,1,n0
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subq n1,d,n1
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1996-03-02 02:43:45 +08:00
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.LLp7:
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1995-02-18 04:13:09 +08:00
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stq n1,0(rem_ptr)
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bis $31,n0,$0
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ret $31,($26),1
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.end __udiv_qrnnd
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