Emulator KLD for SysVR4 executables grabbed from NetBSD.

See http://www.freebsd.org/~newton/freebsd-svr4 for limitations,
capabilities, history and TO-DO list.

1 files changed, 78 insertions, 0 deletions

diff --git a/sys/compat/svr4/svr4_util.h b/sys/compat/svr4/svr4_util.h
new file mode 100644
index 0000000..8bbb980
--- /dev/null
+++ b/sys/compat/svr4/svr4_util.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 1998 Mark Newton
+ * Copyright (c) 1994 Christos Zoulas
+ * 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	_SVR4_UTIL_H_
+#define	_SVR4_UTIL_H_
+
+/*#include <compat/common/compat_util.h>*/
+#include <vm/vm.h>
+#include <vm/vm_param.h>
+#include <vm/pmap.h>
+#include <machine/vmparam.h>
+#include <sys/exec.h>
+#include <sys/sysent.h>
+#include <sys/cdefs.h>
+
+#ifdef DEBUG_SVR4
+#define DPRINTF(a)	uprintf a;
+#else
+#define DPRINTF(a)
+#endif
+
+
+static __inline caddr_t stackgap_init(void);
+static __inline void *stackgap_alloc(caddr_t *, size_t);
+
+static __inline caddr_t
+stackgap_init()
+{
+#define szsigcode (*(curproc->p_sysent->sv_szsigcode))
+        return (caddr_t)(((caddr_t)PS_STRINGS) - szsigcode - SPARE_USRSPACE);
+}
+
+static __inline void *
+stackgap_alloc(sgp, sz)
+	caddr_t	*sgp;
+	size_t   sz;
+{
+	void	*p = (void *) *sgp;
+	*sgp += ALIGN(sz);
+	return p;
+}
+
+extern const char svr4_emul_path[];
+int svr4_emul_find __P((struct proc *, caddr_t *, const char *, char *,
+			char **, int));
+
+#define CHECKALTEXIST(p, sgp, path) \
+    svr4_emul_find(p, sgp, svr4_emul_path, path, &(path), 0)
+
+#define CHECKALTCREAT(p, sgp, path) \
+    svr4_emul_find(p, sgp, svr4_emul_path, path, &(path), 1)
+
+#endif /* !_SVR4_UTIL_H_ */