xref: /freebsd/sys/powerpc/include/ucontext.h (revision aa0a1e58)
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  * $FreeBSD$
33  */
34 
35 #ifndef	_MACHINE_UCONTEXT_H_
36 #define	_MACHINE_UCONTEXT_H_
37 
38 typedef 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 } mcontext_t __aligned(16);
50 
51 #if defined(_KERNEL) && defined(__powerpc64__)
52 typedef struct __mcontext32 {
53 	int		mc_vers;
54 	int		mc_flags;
55 #define _MC_FP_VALID	0x01
56 #define _MC_AV_VALID	0x02
57 	int		mc_onstack;	  	/* saved onstack flag */
58 	int		mc_len;			/* sizeof(__mcontext) */
59 	uint64_t	mc_avec[32*2];		/* vector register file */
60 	uint32_t	mc_av[2];
61 	uint32_t	mc_frame[42];
62 	uint64_t	mc_fpreg[33];
63 } mcontext32_t __aligned(16);
64 #endif
65 
66 /* GPRs and supervisor-level regs */
67 #define mc_gpr		mc_frame
68 #define mc_lr		mc_frame[32]
69 #define mc_cr		mc_frame[33]
70 #define mc_xer		mc_frame[34]
71 #define	mc_ctr		mc_frame[35]
72 #define mc_srr0		mc_frame[36]
73 #define mc_srr1		mc_frame[37]
74 #define mc_dar		mc_frame[38]
75 #define mc_dsisr	mc_frame[39]
76 #define mc_exc		mc_frame[40]
77 
78 /* floating-point state */
79 #define mc_fpscr	mc_fpreg[32]
80 
81 /* altivec state */
82 #define mc_vscr		mc_av[0]
83 #define mc_vrsave	mc_av[1]
84 
85 #define _MC_VERSION	0x1
86 #define _MC_VERSION_KSE 0xee	/* partial ucontext for libpthread */
87 
88 #endif	/* !_MACHINE_UCONTEXT_H_ */
89