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[thirdparty/glibc.git] / sysdeps / generic / sys / ucontext.h

diff --git a/sysdeps/generic/sys/ucontext.h b/sysdeps/generic/sys/ucontext.h
index cdfeb2cb81cbfaea0f93e89626d36735016b3755..178d8f6089f0007dec45e2876e1888ee65192e7b 100644 (file)
--- a/sysdeps/generic/sys/ucontext.h
+++ b/sysdeps/generic/sys/ucontext.h
@@ -1,24 +1,54 @@
-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Data structures for user-level context switching.  Generic version.
+   Copyright (C) 1997-2019 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 Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
+   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
-   Library General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+/* This file's definitions suffice for any platform where all
+   the machine-specific state is described in `struct sigcontext', but
+   use of struct sigcontext does not conform to POSIX namespace
+   requirements.  */
 
 #ifndef _SYS_UCONTEXT_H
 #define _SYS_UCONTEXT_H        1
 
-#error "No system dependent context structure definitions"
+#include <features.h>
+
+#include <bits/types/sigset_t.h>
+#include <bits/sigcontext.h>
+#include <bits/types/stack_t.h>
+
+
+typedef struct sigcontext mcontext_t;
+
+#ifdef __USE_MISC
+# define __ctx(fld) fld
+#else
+# define __ctx(fld) __ ## fld
+#endif
+
+/* Userlevel context.  */
+typedef struct ucontext_t
+  {
+    unsigned long int __ctx(uc_flags);
+    struct ucontext_t *uc_link;
+    stack_t uc_stack;
+    mcontext_t uc_mcontext;
+    sigset_t uc_sigmask;
+  } ucontext_t;
+
+#undef __ctx
 
 #endif /* sys/ucontext.h */