1/*-
 2 * SPDX-License-Identifier: BSD-4-Clause
 3 *
 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
 5 * Copyright (C) 1995, 1996 TooLs GmbH.
 6 * All rights reserved.
 7 *
 8 * Redistribution and use in source and binary forms, with or without
 9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by TooLs GmbH.
19 * 4. The name of TooLs GmbH may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 *
33 * $NetBSD: signal.h,v 1.4 1998/09/14 02:48:34 thorpej Exp $
34 */
35
36#ifndef	_MACHINE_UCONTEXT_H_
37#define	_MACHINE_UCONTEXT_H_
38
39typedef struct __mcontext {
40	int		mc_vers;
41	int		mc_flags;
42#define _MC_FP_VALID	0x01
43#define _MC_AV_VALID	0x02
44	int		mc_onstack;	  	/* saved onstack flag */
45	int		mc_len;			/* sizeof(__mcontext) */
46	__uint64_t	mc_avec[32*2];		/* vector register file */
47	__uint32_t	mc_av[2];
48	__register_t	mc_frame[42];
49	__uint64_t	mc_fpreg[33];
50	__uint64_t	mc_vsxfpreg[32];	/* low-order half of VSR0-31 */
51} mcontext_t __aligned(16);
52
53#if defined(_KERNEL) && defined(__powerpc64__)
54typedef struct __mcontext32 {
55	int		mc_vers;
56	int		mc_flags;
57#define _MC_FP_VALID	0x01
58#define _MC_AV_VALID	0x02
59	int		mc_onstack;	  	/* saved onstack flag */
60	int		mc_len;			/* sizeof(__mcontext) */
61	uint64_t	mc_avec[32*2];		/* vector register file */
62	uint32_t	mc_av[2];
63	uint32_t	mc_frame[42];
64	uint64_t	mc_fpreg[33];
65	uint64_t	mc_vsxfpreg[32];	/* low-order half of VSR0-31 */
66} mcontext32_t __aligned(16);
67#endif
68
69/* GPRs and supervisor-level regs */
70#define mc_gpr		mc_frame
71#define mc_lr		mc_frame[32]
72#define mc_cr		mc_frame[33]
73#define mc_xer		mc_frame[34]
74#define	mc_ctr		mc_frame[35]
75#define mc_srr0		mc_frame[36]
76#define mc_srr1		mc_frame[37]
77#define mc_exc		mc_frame[38]
78#define mc_dar		mc_frame[39]
79#define mc_dsisr	mc_frame[40]
80
81/* floating-point state */
82#define mc_fpscr	mc_fpreg[32]
83
84/* altivec state */
85#define mc_vscr		mc_av[0]
86#define mc_vrsave	mc_av[1]
87
88#define _MC_VERSION	0x1
89#define _MC_VERSION_KSE 0xee	/* partial ucontext for libpthread */
90
91#endif	/* !_MACHINE_UCONTEXT_H_ */