mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-30 10:45:40 +03:00
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/* Copyright (C) 1998-2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _SYS_UCONTEXT_H
|
|
#define _SYS_UCONTEXT_H 1
|
|
|
|
#include <features.h>
|
|
#include <signal.h>
|
|
|
|
/* We need the signal context definitions even if they are not exposed
|
|
by <signal.h>. */
|
|
#include <bits/sigcontext.h>
|
|
#include <bits/sigstack.h>
|
|
|
|
|
|
/*
|
|
* These are here mostly for backwards compatibility with older Unices.
|
|
* IA-64 Linux does not distinguish between "struct sigcontext" and
|
|
* "ucontext_t" as all the necessary info is inside the former.
|
|
*/
|
|
|
|
typedef struct sigcontext mcontext_t;
|
|
|
|
#if __GNUC_PREREQ (3, 5)
|
|
# define _SC_GR0_OFFSET \
|
|
__builtin_offsetof (struct sigcontext, sc_gr[0])
|
|
#elif defined __GNUC__
|
|
# define _SC_GR0_OFFSET \
|
|
(((char *) &((struct sigcontext *) 0)->sc_gr[0]) - (char *) 0)
|
|
#else
|
|
# define _SC_GR0_OFFSET 0xc8 /* pray that this is correct... */
|
|
#endif
|
|
|
|
typedef struct ucontext
|
|
{
|
|
union
|
|
{
|
|
mcontext_t _mc;
|
|
struct
|
|
{
|
|
unsigned long _pad[_SC_GR0_OFFSET/8];
|
|
struct ucontext *_link; /* this should overlay sc_gr[0] */
|
|
}
|
|
_uc;
|
|
}
|
|
_u;
|
|
}
|
|
ucontext_t;
|
|
|
|
#define uc_mcontext _u._mc
|
|
#define uc_sigmask _u._mc.sc_mask
|
|
#define uc_stack _u._mc.sc_stack
|
|
#define uc_link _u._uc._link
|
|
|
|
#endif /* sys/ucontext.h */
|