initial import of NetBSD tree

1 files changed, 71 insertions, 0 deletions

diff --git a/sys/compat/common/compat_util.h b/sys/compat/common/compat_util.h
new file mode 100644
index 00000000000..b1d1e96515c
--- /dev/null
+++ b/sys/compat/common/compat_util.h
@@ -0,0 +1,71 @@
+/*	$NetBSD: compat_util.h,v 1.1 1995/06/24 20:16:05 christos Exp $	*/
+
+/*
+ * Copyright (c) 1994 Christos Zoulas
+ * Copyright (c) 1995 Frank van der Linden
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef	_COMPAT_UTIL_H_
+#define	_COMPAT_UTIL_H_
+
+#include <machine/vmparam.h>
+#include <sys/exec.h>
+#include <sys/cdefs.h>
+#include <sys/proc.h>
+
+static __inline caddr_t	stackgap_init __P((struct emul *));
+static __inline void *stackgap_alloc __P((caddr_t *, size_t));
+
+static __inline caddr_t
+stackgap_init(e)
+	struct emul *e;
+{
+#define szsigcode ((caddr_t)(e->e_esigcode - e->e_sigcode))
+	return STACKGAPBASE;
+}
+
+
+static __inline void *
+stackgap_alloc(sgp, sz)
+	caddr_t	*sgp;
+	size_t   sz;
+{
+	void	*p = (void *) *sgp;
+	*sgp += ALIGN(sz);
+	return p;
+}
+
+int emul_find __P((struct proc *, caddr_t *, const char *, char *,
+		   char **, int));
+
+#define CHECK_ALT_EXIST(p, sgp, root, path) \
+    emul_find(p, sgp, root, path, &(path), 0)
+
+#define CHECK_ALT_CREAT(p, sgp, root, path) \
+    emul_find(p, sgp, root, path, &(path), 1)
+
+#endif /* !_COMPAT_UTIL_H_ */