1 /*	$NetBSD: fp.h,v 1.1 2001/01/10 19:02:06 bjh21 Exp $	*/
2 
3 /*-
4  * Copyright (c) 1995 Mark Brinicombe.
5  * Copyright (c) 1995 Brini.
6  * All rights reserved.
7  *
8  * This code is derived from software written for Brini by Mark Brinicombe
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *	This product includes software developed by Brini.
21  * 4. The name of the company nor the name of the author may be used to
22  *    endorse or promote products derived from this software without specific
23  *    prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
26  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
29  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
30  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35  * SUCH DAMAGE.
36  *
37  * RiscBSD kernel project
38  *
39  * fp.h
40  *
41  * FP info
42  *
43  * Created      : 10/10/95
44  *
45  * $FreeBSD: stable/10/sys/arm/include/fp.h 266341 2014-05-17 19:37:04Z ian $
46  */
47 
48 #ifndef _MACHINE_FP_H
49 #define _MACHINE_FP_H
50 
51 /*
52  * An extended precision floating point number
53  */
54 
55 typedef struct fp_extended_precision {
56 	u_int32_t fp_exponent;
57 	u_int32_t fp_mantissa_hi;
58 	u_int32_t fp_mantissa_lo;
59 } fp_extended_precision_t;
60 
61 typedef struct fp_extended_precision fp_reg_t;
62 
63 /*
64  * Information about the FPE-SP state that is stored in the pcb
65  *
66  * This needs to move and be hidden from userland.
67  */
68 
69 struct vfp_state {
70 	u_int64_t reg[32];
71 	u_int32_t fpscr;
72 	u_int32_t fpexec;
73 	u_int32_t fpinst;
74 	u_int32_t fpinst2;
75 };
76 
77 /*
78  * Type for a saved FP context, if we want to translate the context to a
79  * user-readable form
80  */
81 
82 typedef struct {
83 	u_int32_t fpsr;
84 	fp_extended_precision_t regs[8];
85 } fp_state_t;
86 
87 #endif /* _MACHINE_FP_H_ */
88 
89 /* End of fp.h */
90