ucontext.h revision 279937 
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 279937 2015-03-12 21:15:38Z nwhitehorn $
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	register_t	mc_frame[42];
48	uint64_t	mc_fpreg[33];
49	uint64_t	mc_vsxfpreg[32];	/* low-order half of VSR0-31 */
50} mcontext_t __aligned(16);
51
52#if defined(_KERNEL) && defined(__powerpc64__)
53typedef struct __mcontext32 {
54	int		mc_vers;
55	int		mc_flags;
56#define _MC_FP_VALID	0x01
57#define _MC_AV_VALID	0x02
58	int		mc_onstack;	  	/* saved onstack flag */
59	int		mc_len;			/* sizeof(__mcontext) */
60	uint64_t	mc_avec[32*2];		/* vector register file */
61	uint32_t	mc_av[2];
62	uint32_t	mc_frame[42];
63	uint64_t	mc_fpreg[33];
64	uint64_t	mc_vsxfpreg[32];	/* low-order half of VSR0-31 */
65} mcontext32_t __aligned(16);
66#endif
67
68/* GPRs and supervisor-level regs */
69#define mc_gpr		mc_frame
70#define mc_lr		mc_frame[32]
71#define mc_cr		mc_frame[33]
72#define mc_xer		mc_frame[34]
73#define	mc_ctr		mc_frame[35]
74#define mc_srr0		mc_frame[36]
75#define mc_srr1		mc_frame[37]
76#define mc_exc		mc_frame[38]
77#define mc_dar		mc_frame[39]
78#define mc_dsisr	mc_frame[40]
79
80/* floating-point state */
81#define mc_fpscr	mc_fpreg[32]
82
83/* altivec state */
84#define mc_vscr		mc_av[0]
85#define mc_vrsave	mc_av[1]
86
87#define _MC_VERSION	0x1
88#define _MC_VERSION_KSE 0xee	/* partial ucontext for libpthread */
89
90#endif	/* !_MACHINE_UCONTEXT_H_ */
91