diff options
Diffstat (limited to 'libc/sysdeps/linux/ia64/sys/ucontext.h')
| -rw-r--r-- | libc/sysdeps/linux/ia64/sys/ucontext.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/ia64/sys/ucontext.h b/libc/sysdeps/linux/ia64/sys/ucontext.h new file mode 100644 index 000000000..17dc85f99 --- /dev/null +++ b/libc/sysdeps/linux/ia64/sys/ucontext.h @@ -0,0 +1,66 @@ +/* Copyright (C) 1998, 2000, 2001, 2002, 2004 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_UCONTEXT_H +#define _SYS_UCONTEXT_H 1 + +#include <features.h> +#include <signal.h> + +#include <bits/sigcontext.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 defined __cplusplus && __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 */ |