FreeBSD/Linux Kernel Cross Reference
sys/arm/include/fp.h
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: src/sys/arm/include/fp.h,v 1.2 2005/01/05 21:58:48 imp Exp $
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 fpe_sp_state {
70 unsigned int fp_flags;
71 unsigned int fp_sr;
72 unsigned int fp_cr;
73 fp_reg_t fp_registers[16];
74 };
75
76 /*
77 * Type for a saved FP context, if we want to translate the context to a
78 * user-readable form
79 */
80
81 typedef struct {
82 u_int32_t fpsr;
83 fp_extended_precision_t regs[8];
84 } fp_state_t;
85
86 #endif /* _MACHINE_FP_H_ */
87
88 /* End of fp.h */
89 Cache object: 97a6d8230f51a0b6c3dfbe92db401558
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