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-rw-r--r--libc/sysdeps/linux/ia64/sys/ucontext.h66
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
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+++ b/libc/sysdeps/linux/ia64/sys/ucontext.h
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+/* 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 */