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, 90 insertions, 0 deletions

diff --git a/sys/sparc64/include/elf.h b/sys/sparc64/include/elf.h
new file mode 100644
index 0000000..f5f7cfa
--- /dev/null
+++ b/sys/sparc64/include/elf.h
@@ -0,0 +1,90 @@
+/*-
+ * Copyright (c) 2001 Jake Burkholder.
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef	_MACHINE_ELF_H_
+#define	_MACHINE_ELF_H_
+
+#include <sys/elf64.h>
+
+#define	__ELF_WORD_SIZE	64
+#include <sys/elf_generic.h>
+
+#define	ELF_ARCH	EM_SPARCV9
+
+#define	ELF_TARG_CLASS	ELFCLASS64
+#define	ELF_TARG_DATA	ELFDATA2MSB
+#define	ELF_TARG_MACH	ELF_ARCH
+#define	ELF_TARG_VER	1
+
+#define	ELF_MACHINE_OK(m)	((m) == ELF_ARCH)
+#define	ELF_RTLD_ADDR(vm)	(0)
+
+/*
+ * Auxiliary vector entries for passing information to the interpreter.
+ */
+
+typedef	struct {
+	long	a_type;
+	union {
+		long	a_val;
+		void	*a_ptr;
+		void	(*a_fcn)(void);
+	} a_un;
+} Elf64_Auxinfo;
+
+__ElfType(Auxinfo);
+
+/*
+ * Values for a_type.
+ */
+
+#define AT_NULL		0	/* Terminates the vector. */
+#define AT_IGNORE	1	/* Ignored entry. */
+#define AT_EXECFD	2	/* File descriptor of program to load. */
+#define AT_PHDR		3	/* Program header of program already loaded. */
+#define AT_PHENT	4	/* Size of each program header entry. */
+#define AT_PHNUM	5	/* Number of program header entries. */
+#define AT_PAGESZ	6	/* Page size in bytes. */
+#define AT_BASE		7	/* Interpreter's base address. */
+#define AT_FLAGS	8	/* Flags (unused). */
+#define AT_ENTRY	9	/* Where interpreter should transfer control. */
+
+/*
+ * The following non-standard values are used for passing information
+ * from John Polstra's testbed program to the dynamic linker.  These
+ * are expected to go away soon.
+ *
+ * Unfortunately, these overlap the Linux non-standard values, so they
+ * must not be used in the same context.
+ */
+#define AT_BRK		10	/* Starting point for sbrk and brk. */
+#define AT_DEBUG	11	/* Debugging level. */
+
+#define	AT_COUNT	15	/* Count of defined aux entry types. */
+
+#endif /* !_MACHINE_ELF_H_ */