1 /* struct ucontext definition, C-SKY version.
2    Copyright (C) 2018-2021 Free Software Foundation, Inc.
3    This file is part of the GNU C Library.
4 
5    The GNU C Library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9 
10    The GNU C Library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14 
15    You should have received a copy of the GNU Lesser General Public
16    License along with the GNU C Library.  If not, see
17    <https://www.gnu.org/licenses/>.  */
18 
19 #ifndef _SYS_UCONTEXT_H
20 #define _SYS_UCONTEXT_H	1
21 
22 #include <features.h>
23 
24 #include <bits/types/sigset_t.h>
25 #include <bits/types/stack_t.h>
26 
27 typedef struct
28   {
29     unsigned long __tls;
30     unsigned long __lr;
31     unsigned long __pc;
32     unsigned long __sr;
33     unsigned long __usp;
34 
35     /*
36      * a0, a1, a2, a3:
37      * abiv1: r2, r3, r4, r5
38      * abiv2: r0, r1, r2, r3
39      */
40 
41     unsigned long __orig_a0;
42     unsigned long __a0;
43     unsigned long __a1;
44     unsigned long __a2;
45     unsigned long __a3;
46 
47     /*
48      * ABIV2: r4 ~ r13
49      */
50     unsigned long __regs[10];
51 
52     /* r16 ~ r30 */
53     unsigned long __exregs[15];
54 
55     unsigned long __rhi;
56     unsigned long __rlo;
57     unsigned long __glibc_reserved;
58   } gregset_t;
59 
60 typedef struct
61   {
62     unsigned long __vr[64];
63     unsigned long __fcr;
64     unsigned long __fesr;
65     unsigned long __fid;
66     unsigned long __glibc_reserved;
67   } fpregset_t;
68 
69 /* Context to describe whole processor state.  */
70 typedef struct
71   {
72     gregset_t __gregs;
73     fpregset_t __fpregs;
74   } mcontext_t;
75 
76 /* Userlevel context.  */
77 typedef struct ucontext_t
78   {
79     unsigned long int __uc_flags;
80     struct ucontext_t *uc_link;
81     stack_t uc_stack;
82     mcontext_t uc_mcontext;
83     sigset_t uc_sigmask;
84   } ucontext_t;
85 
86 #undef __ctx
87 
88 
89 #endif /* sys/ucontext.h */
90