1 /* $NetBSD: mcontext.h,v 1.10 2019/12/27 00:32:17 kamil 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #ifndef _VAX_MCONTEXT_H_
33 #define _VAX_MCONTEXT_H_
34
35 /*
36 * Layout of mcontext_t.
37 * As on Alpha, this maps directly to `struct reg'.
38 */
39
40 #define _NGREG 17 /* R0-31, AP, SP, FP, PC, PSL */
41
42 typedef int __greg_t;
43 typedef __greg_t __gregset_t[_NGREG];
44
45 #define _REG_R0 0
46 #define _REG_R1 1
47 #define _REG_R2 2
48 #define _REG_R3 3
49 #define _REG_R4 4
50 #define _REG_R5 5
51 #define _REG_R6 6
52 #define _REG_R7 7
53 #define _REG_R8 8
54 #define _REG_R9 9
55 #define _REG_R10 10
56 #define _REG_R11 11
57 #define _REG_AP 12
58 #define _REG_FP 13
59 #define _REG_SP 14
60 #define _REG_PC 15
61 #define _REG_PSL 16
62
63 typedef struct {
64 __gregset_t __gregs; /* General Purpose Register set */
65 } mcontext_t;
66
67 /* Machine-dependent uc_flags */
68 #define _UC_TLSBASE 0x00080000
69
70 #define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP])
71 #define _UC_MACHINE_FP(uc) ((uc)->uc_mcontext.__gregs[_REG_FP])
72 #define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC])
73 #define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_R0])
74
75 #define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
76
77 #if defined(_RTLD_SOURCE) || defined(_LIBC_SOURCE) || \
78 defined(__LIBPTHREAD_SOURCE__)
79 #include <sys/tls.h>
80 #include <sys/syscall.h>
81
82 __BEGIN_DECLS
83 static __inline void *
__lwp_getprivate_fast(void)84 __lwp_getprivate_fast(void)
85 {
86 register void *tcb __asm("r0");
87 __asm("chmk %0" :: "i"(SYS__lwp_getprivate) : "r0");
88 return tcb;
89 }
90 __END_DECLS
91
92 #endif
93
94 #endif /* !_VAX_MCONTEXT_H_ */
95