import files from glibc for an ia64/static port

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 */