ucontext.h revision 132380 
1/*
2 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
3 * Copyright (C) 1995, 1996 TooLs GmbH.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by TooLs GmbH.
17 * 4. The name of TooLs GmbH may not be used to endorse or promote products
18 *    derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * $NetBSD: signal.h,v 1.4 1998/09/14 02:48:34 thorpej Exp $
32 * $FreeBSD: head/sys/powerpc/include/ucontext.h 132380 2004-07-19 07:21:46Z grehan $
33 */
34
35#ifndef	_MACHINE_UCONTEXT_H_
36#define	_MACHINE_UCONTEXT_H_
37
38typedef struct __mcontext {
39	int		mc_vers;
40	int		mc_flags;
41#define _MC_FP_VALID	0x01
42#define _MC_AV_VALID	0x02
43	int		mc_onstack;	  	/* saved onstack flag */
44	int		mc_len;			/* sizeof(__mcontext) */
45	uint64_t	mc_avec[32*2];		/* vector register file */
46	uint32_t	mc_av[2];
47	uint32_t	mc_frame[41];
48	uint64_t	mc_fpreg[33];
49} mcontext_t __aligned(16);
50
51/* GPRs and supervisor-level regs */
52#define mc_gpr		mc_frame
53#define mc_lr		mc_frame[32]
54#define mc_cr		mc_frame[33]
55#define mc_xer		mc_frame[34]
56#define	mc_ctr		mc_frame[35]
57#define mc_srr0		mc_frame[36]
58#define mc_srr1		mc_frame[37]
59#define mc_dar		mc_frame[38]
60#define mc_dsisr	mc_frame[39]
61#define mc_exc		mc_frame[40]
62
63/* floating-point state */
64#define mc_fpscr	mc_fpreg[32]
65
66/* altivec state */
67#define mc_vscr		mc_av[0]
68#define mc_vrsave	mc_av[1]
69
70#define _MC_VERSION	0x1
71#define _MC_VERSION_KSE 0xee	/* partial ucontext for libpthread */
72
73#endif	/* !_MACHINE_UCONTEXT_H_ */
74