xref: /openbsd/sys/arch/m88k/include/fpu.h (revision 203eb91a)
1 /*	$OpenBSD: fpu.h,v 1.2 2014/07/01 20:26:09 miod Exp $	*/
2 
3 /*
4  * Copyright (c) 2007, 2014, Miodrag Vallat.
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice, this permission notice, and the disclaimer below
9  * appear in all copies.
10  *
11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18  */
19 
20 #ifndef	_M88K_FPU_H_
21 #define	_M88K_FPU_H_
22 
23 /* FPECR bits */
24 #define	FPECR_FIOV	0x80
25 #define	FPECR_FUNIMP	0x40
26 #define	FPECR_FPRV	0x20
27 #define	FPECR_FROP	0x10
28 #define	FPECR_FDVZ	0x08
29 #define	FPECR_FUNF	0x04
30 #define	FPECR_FOVF	0x02
31 #define	FPECR_FINX	0x01
32 
33 /* FPSR and FPCR exception bits */
34 #define	FPSR_EFINV	0x10
35 #define	FPSR_EFDVZ	0x08
36 #define	FPSR_EFUNF	0x04
37 #define	FPSR_EFOVF	0x02
38 #define	FPSR_EFINX	0x01
39 
40 /* FPIT bits */
41 #define	FPIT_DBL	0x00000400
42 
43 /* FPRH bits and masks */
44 #define	FPRH_SIGN	0x80000000
45 #define	FPRH_ADDONE	0x02000000
46 #define	FPRH_MANTH_MASK	0x001fffff
47 #define	FPRH_MANTH_BITS	21
48 
49 #endif	/* _M88K_FPU_H_ */
50