xref: /netbsd/sys/arch/m68k/fpsp/DYADIC.CI5 (revision bf9ec67e)
1*	$NetBSD: DYADIC.CI5,v 1.2 1994/10/26 07:48:26 cgd Exp $
2
3*	MOTOROLA MICROPROCESSOR & MEMORY TECHNOLOGY GROUP
4*	M68000 Hi-Performance Microprocessor Division
5*	M68040 Software Package
6*
7*	M68040 Software Package Copyright (c) 1993, 1994 Motorola Inc.
8*	All rights reserved.
9*
10*	THE SOFTWARE is provided on an "AS IS" basis and without warranty.
11*	To the maximum extent permitted by applicable law,
12*	MOTOROLA DISCLAIMS ALL WARRANTIES WHETHER EXPRESS OR IMPLIED,
13*	INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
14*	PARTICULAR PURPOSE and any warranty against infringement with
15*	regard to the SOFTWARE (INCLUDING ANY MODIFIED VERSIONS THEREOF)
16*	and any accompanying written materials.
17*
18*	To the maximum extent permitted by applicable law,
19*	IN NO EVENT SHALL MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER
20*	(INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS
21*	PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR
22*	OTHER PECUNIARY LOSS) ARISING OF THE USE OR INABILITY TO USE THE
23*	SOFTWARE.  Motorola assumes no responsibility for the maintenance
24*	and support of the SOFTWARE.
25*
26*	You are hereby granted a copyright license to use, modify, and
27*	distribute the SOFTWARE so long as this entire notice is retained
28*	without alteration in any modified and/or redistributed versions,
29*	and that such modified versions are clearly identified as such.
30*	No licenses are granted by implication, estoppel or otherwise
31*	under any patents or trademarks of Motorola, Inc.
32
33*
34*	DYADIC.CI5 1.2 4/30/91
35*
36*	DYADIC.CI5 --- DYADIC template for CI5 compiler
37*
38
39	xref	_OPa_
40	xref	tag
41
42	xdef	_OPd_
43_OPd_:
44	link	a6,#-LOCAL_SIZE
45	fmovem.x fp2-fp3,USER_FP2(a6)
46	fmovem.l fpsr/fpcr,USER_FPSR(a6) ; user's rounding mode/precision
47	fmove.l	#0,fpcr		; force rounding mode/prec to extended,rn
48*
49*	copy, convert and tag input arguments
50*
51	fmove.d	8(a6),fp0
52	fmove.x	fp0,FPTEMP(a6)
53	lea	FPTEMP(a6),a0
54	bsr	tag
55	move.b	d0,DTAG(a6)
56
57	fmove.d	16(a6),fp0
58	fmove.x	fp0,ETEMP(a6)
59	lea	ETEMP(a6),a0
60	bsr	tag
61	move.b	d0,STAG(a6)
62
63	bsr	_OPa_
64
65	fmove.l	fpsr,d0		; update status register
66	or.b	FPSR_AEXCEPT(a6),d0	;add previously accrued exceptions
67	swap.w	d0
68	or.b	FPSR_QBYTE(a6),d0	; pickup sign of quotient byte
69	swap.w	d0
70	fmove.l	d0,fpsr
71*
72*	Result is now in FP0
73*
74	fmovem.x USER_FP2(a6),fp2-fp3	; note: FP0/FP1 not restored
75	unlk	a6
76	rts
77
78