glibc/sysdeps/alpha/udiv_qrnnd.S
Roland McGrath 510ca033d6 Wed May 22 00:40:50 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/speed.c (speeds): Add entry for
 	460800 baud.

	* sysdeps/unix/sysv/linux/alpha/statbuf.h: New file.

	* sysdeps/unix/sysv/linux/Makefile (headers): Add
 	alpha/ptrace.h.
	* sysdeps/unix/sysv/linux/alpha/alpha/ptrace.h: New file.

	* sysdeps/libm-ieee754/s_scalbnf.c: Call __scalbnf instead of
 	scalbnf.

	* sysdeps/generic/sigset.h (__sigismember, __sigaddset,
 	__sigdelset): Add declaration to keep ANSI compilers quiet.

	* sysdeps/alpha/__math.h (cabs): Remove underscores from struct
 	__cabs_complex member names in call to __hypot().

	* sysdeps/alpha/copysign.S, sysdeps/alpha/fabs.S: New files.

	* sysdeps/alpha/divrem.h: Renamed from sysdeps/alpha/divrem.S to avoid
 	name collision with math library.

	* sysdeps/alpha/divl.S, sysdeps/alpha/divlu.S, sysdeps/alpha/divq.S,
	sysdeps/alpha/divqu.S, sysdeps/alpha/reml.S, sysdeps/alpha/remlu.S,
	sysdeps/alpha/remq.S, sysdeps/alpha/remqu.S: Include divrem.h instead
	of divrem.S.

	* sysdeps/unix/alpha/sysdep.h: Include regdef.h.  Define LEAF macro
	to simplify declaration of leaf functions.

	* 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".

	* sysdeps/unix/sysv/linux/alpha/sysdep.h (NO_UNDERSCORES): Don't
	define.

	* sysdeps/unix/sysv/linux/alpha/syscalls.list: Added getsockopt,
	ptrace, and sysctl.

	* sysdeps/unix/sysv/linux/alpha/profil-counter.h: File removed.

	* sysdeps/unix/sysv/linux/alpha/ioperm.c: Modify to support
 	dynamic recognition of platform type.
	(_bus_base): New function.

	* sysdeps/unix/sysv/linux/alpha/llseek.S: New file.

	* sunrpc/rpc/rpc.h, sunrpc/rpc/svc.h: Avoid nested comments since
 	they produce ugly warnings by gcc.

	* posix/sys/types.h [__USE_MISC]: Add typedef for ulong.

Wed Mar 27 10:26:21 1996  David Mosberger-Tang  <davidm@azstarnet.com>

	* sysdeps/alpha/setjmp.S: Must establish global pointer before
 	address of __sigsetjmp_aux can be loaded.
1996-05-23 05:33:49 +00:00

152 lines
2.7 KiB
ArmAsm

# Alpha 21064 __udiv_qrnnd
# Copyright (C) 1992, 1994, 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.
#include <sysdep.h>
.set noreorder
.set noat
.text
LEAF(__udiv_qrnnd, 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
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,.LOdd
stq n1,0(rem_ptr)
bis $31,n0,$0
ret $31,($26),1
.LOdd:
/* q' in n0. r' in n1 */
addq n1,n0,n1
cmpult n1,n0,tmp # tmp := carry from addq
beq tmp,.LLp6
addq n0,1,n0
subq n1,d,n1
.LLp6: cmpult n1,d,tmp
bne tmp,.LLp7
addq n0,1,n0
subq n1,d,n1
.LLp7:
stq n1,0(rem_ptr)
bis $31,n0,$0
ret $31,($26),1
.end __udiv_qrnnd