1/* struct ucontext definition.
2 Copyright (C) 2022-2026 Free Software Foundation, Inc.
3
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library. If not, see
18 <https://www.gnu.org/licenses/>. */
19
20/* Don't rely on this, the interface is currently messed up and may need to
21 be broken to be fixed. */
22#ifndef _SYS_UCONTEXT_H
23#define _SYS_UCONTEXT_H 1
24
25#include <features.h>
26
27#include <bits/types/sigset_t.h>
28#include <bits/types/stack_t.h>
29
30#ifdef __USE_MISC
31#define LARCH_NGREG 32
32
33#define LARCH_REG_RA 1
34#define LARCH_REG_SP 3
35#define LARCH_REG_S0 23
36#define LARCH_REG_S1 24
37#define LARCH_REG_A0 4
38#define LARCH_REG_S2 25
39#define LARCH_REG_NARGS 8
40
41typedef unsigned long int greg_t;
42/* Container for all general registers. */
43typedef greg_t gregset_t[32];
44#endif
45
46typedef struct mcontext_t
47{
48 unsigned long long __pc;
49 unsigned long long __gregs[32];
50 unsigned int __flags;
51 unsigned long long __extcontext[0] __attribute__((__aligned__(16)));
52} mcontext_t;
53
54/* Userlevel context. */
55typedef struct ucontext_t
56{
57 unsigned long int __uc_flags;
58 struct ucontext_t *uc_link;
59 stack_t uc_stack;
60 sigset_t uc_sigmask;
61 mcontext_t uc_mcontext;
62} ucontext_t;
63
64#endif /* sys/ucontext.h */