mcontext.h revision 1.2.2.3 1 /* $NetBSD: mcontext.h,v 1.2.2.3 2004/09/21 13:17:35 skrll Exp $ */
2
3 /*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Klaus Klein.
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 the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #ifndef _M68K_MCONTEXT_H_
40 #define _M68K_MCONTEXT_H_
41
42 #ifdef _KERNEL
43 #include <m68k/cpuframe.h>
44 #endif
45
46 /*
47 * mcontext extensions to handle signal delivery.
48 */
49 #define _UC_SETSTACK 0x00010000
50 #define _UC_CLRSTACK 0x00020000
51
52 /*
53 * General register state
54 */
55 #define _NGREG 18
56 typedef int __greg_t;
57 typedef __greg_t __gregset_t[_NGREG];
58
59 #define _REG_D0 0
60 #define _REG_D1 1
61 #define _REG_D2 2
62 #define _REG_D3 3
63 #define _REG_D4 4
64 #define _REG_D5 5
65 #define _REG_D6 6
66 #define _REG_D7 7
67 #define _REG_A0 8
68 #define _REG_A1 9
69 #define _REG_A2 10
70 #define _REG_A3 11
71 #define _REG_A4 12
72 #define _REG_A5 13
73 #define _REG_A6 14
74 #define _REG_A7 15
75 #define _REG_PC 16
76 #define _REG_PS 17
77
78 typedef struct {
79 int __fp_pcr;
80 int __fp_psr;
81 int __fp_piaddr;
82 int __fp_fpregs[8*3];
83 } __fpregset_t;
84
85 typedef struct {
86 __gregset_t __gregs; /* General Register set */
87 __fpregset_t __fpregs; /* Floating Point Register set */
88 union {
89 long __mc_state[202]; /* Only need 308 bytes... */
90 #if defined(_KERNEL) || defined(__M68K_MCONTEXT_PRIVATE)
91 struct {
92 /* Rest of the frame. */
93 unsigned int __mcf_format;
94 unsigned int __mcf_vector;
95 union F_u __mcf_exframe;
96 /* Rest of the FPU frame. */
97 union FPF_u1 __mcf_fpf_u1;
98 union FPF_u2 __mcf_fpf_u2;
99 } __mc_frame;
100 #endif /* _KERNEL || __M68K_MCONTEXT_PRIVATE */
101 } __mc_pad;
102 } mcontext_t;
103
104 /* Note: no additional padding is to be performed in ucontext_t. */
105
106 /* Machine-specific uc_flags value */
107 #define _UC_M68K_UC_USER 0x40000000
108
109 #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_A7])
110 #define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC])
111 #define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_D0])
112
113 #define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
114
115 #endif /* !_M68K_MCONTEXT_H_ */
116