1 /* Copyright (C) 1997, 1998, 2000, 2003, 2004, 2006 Free Software
2 Foundation, Inc. This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
18 /* Don't rely on this, the interface is currently messed up and may need to
19 be broken to be fixed. */
20 #ifndef _SYS_UCONTEXT_H
21 #define _SYS_UCONTEXT_H 1
27 /* We need the signal context definitions even if they are not used
28 included in <signal.h>. */
29 #include <bits/sigcontext.h>
31 /* Type for general register. Even in o32 we assume 64-bit registers,
33 __extension__ typedef unsigned long long int greg_t;
35 /* Number of general registers. */
39 /* Container for all general registers. */
40 typedef greg_t gregset_t[NGREG];
42 /* Container for all FPU registers. */
43 typedef struct fpregset {
45 double fp_dregs[NFPREG];
54 /* Context to describe whole processor state. */
55 #if _MIPS_SIM == _ABIO32
56 /* Earlier versions of glibc for mips had an entirely different
57 definition of mcontext_t, that didn't even resemble the
58 corresponding kernel data structure. Since all legitimate uses of
59 ucontext_t in glibc mustn't have accessed anything beyond
60 uc_mcontext and, even then, taking a pointer to it, casting it to
61 sigcontext_t, and accessing it as such, which is what it has always
62 been, this can still be rectified. Fortunately, makecontext,
63 [gs]etcontext et all have never been implemented. */
71 unsigned int fp_owned;
74 unsigned int used_math;
100 unsigned int used_math;
102 unsigned int reserved;
106 /* Userlevel context. */
107 typedef struct ucontext
109 unsigned long int uc_flags;
110 struct ucontext *uc_link;
112 mcontext_t uc_mcontext;
113 __sigset_t uc_sigmask;
116 #endif /* sys/ucontext.h */