Add skeleton machine dependent headers and c files for a port of freebsd

to a new architecture.  This is the base of the sparc64 port, but contains
limited machine dependent code, and can be used a base for ports.  Included
are:
- standard machine dependent headers, tweaked for a 64 bit, big endian
  architecture, including empty versions of all the machine dependent
  structures
- a machine independent atomic.h, which can be used until a port has
  support for interrupts and the operations really need to be atomic
- stub versions of all the machine dependent functions, which panic
  when called and print out the name of the function that needs to
  be implemented.  functions which are normally in assembly files are
  not included, but this should reduce the number of different undefined
  references on the first few compiles from hundreds to 5 or 6
Given minimal startup code and console support it should be trivial to
make this compile and run the first few sysinits on almost any architecture.

Requested by:   alfred, imp, jhb

1 files changed, 85 insertions, 0 deletions

diff --git a/sys/sparc64/include/endian.h b/sys/sparc64/include/endian.h
new file mode 100644
index 0000000..0e8e1f1
--- /dev/null
+++ b/sys/sparc64/include/endian.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 1987, 1991, 1993
+ *	The Regents of the University of California.  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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ *
+ *	@(#)endian.h	8.1 (Berkeley) 6/10/93
+ * $FreeBSD$
+ */
+
+#ifndef _MACHINE_ENDIAN_H_
+#define	_MACHINE_ENDIAN_H_
+
+/*
+ * Define the order of 32-bit words in 64-bit words.
+ */
+#define _QUAD_HIGHWORD 0
+#define _QUAD_LOWWORD 1
+
+#ifndef _POSIX_SOURCE
+/*
+ * Definitions for byte order, according to byte significance from low
+ * address to high.
+ */
+#define	LITTLE_ENDIAN	1234	/* LSB first: i386, vax */
+#define	BIG_ENDIAN	4321	/* MSB first: 68000, ibm, net */
+#define	PDP_ENDIAN	3412	/* LSB first in word, MSW first in long */
+
+#define	BYTE_ORDER	BIG_ENDIAN
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+__BEGIN_DECLS
+in_addr_t	htonl __P((in_addr_t));
+in_port_t	htons __P((in_port_t));
+in_addr_t	ntohl __P((in_addr_t));
+in_port_t	ntohs __P((in_port_t));
+u_int16_t	bswap16 __P((u_int16_t));
+u_int32_t	bswap32 __P((u_int32_t));
+u_int64_t	bswap64 __P((u_int64_t));
+__END_DECLS
+
+/*
+ * Macros for network/external number representation conversion.
+ */
+#if BYTE_ORDER == BIG_ENDIAN && !defined(lint)
+#define	ntohl(x)	(x)
+#define	ntohs(x)	(x)
+#define	htonl(x)	(x)
+#define	htons(x)	(x)
+
+#define	NTOHL(x)	(x)
+#define	NTOHS(x)	(x)
+#define	HTONL(x)	(x)
+#define	HTONS(x)	(x)
+
+#else
+
+#define	NTOHL(x)	(x) = ntohl((in_addr_t)x)
+#define	NTOHS(x)	(x) = ntohs((in_port_t)x)
+#define	HTONL(x)	(x) = htonl((in_addr_t)x)
+#define	HTONS(x)	(x) = htons((in_port_t)x)
+#endif
+#endif /* !_POSIX_SOURCE */
+#endif /* !_MACHINE_ENDIAN_H_ */