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Diffstat (limited to 'sysdeps/generic/sys/ucontext.h')
-rw-r--r--sysdeps/generic/sys/ucontext.h25
1 files changed, 23 insertions, 2 deletions
diff --git a/sysdeps/generic/sys/ucontext.h b/sysdeps/generic/sys/ucontext.h
index e3c4acef1f..d643dfbfc7 100644
--- a/sysdeps/generic/sys/ucontext.h
+++ b/sysdeps/generic/sys/ucontext.h
@@ -1,4 +1,5 @@
-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Data structures for user-level context switching. Generic version.
+ Copyright (C) 1997,98,99,2001 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
@@ -16,9 +17,29 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
+/* This file's definitions suffice for any platform where all
+ the machine-specific state is described in `struct sigcontext'. */
+
#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H 1
-#error "No system dependent context structure definitions"
+#include <features.h>
+#include <signal.h>
+
+/* We need the signal context definitions even if they are not used
+ included in <signal.h>. */
+#include <bits/sigcontext.h>
+
+typedef struct sigcontext mcontext_t;
+
+/* Userlevel context. */
+typedef struct ucontext
+ {
+ unsigned long int uc_flags;
+ struct ucontext *uc_link;
+ stack_t uc_stack;
+ mcontext_t uc_mcontext;
+ __sigset_t uc_sigmask;
+ } ucontext_t;
#endif /* sys/ucontext.h */