heavily rewrite the netboot support.

netboot/osdep.h

@@ -0,0 +1,69 @@
+#ifndef __OSDEP_H__
+#define __OSDEP_H__
+
+#if 1
+# define ETHERBOOT32
+# include <byteorder.h>
+# if 0
+#  include <linux-asm-string.h>
+# endif
+# include <linux-asm-io.h>
+#else
+#ifdef	__linux__
+#define	ETHERBOOT32
+#include <asm/byteorder.h>
+#include "linux-asm-string.h"
+#include "linux-asm-io.h"
+#define	_edata	edata			/* ELF does not prepend a _ */
+#define	_end	end
+#endif
+
+#ifdef	__FreeBSD__
+#define	ETHERBOOT32
+#include <sys/types.h>
+#include "linux-asm-string.h"
+#include "linux-asm-io.h"
+#define	_edata	edata			/* ELF does not prepend a _ */
+#define	_end	end
+#endif
+
+#ifdef	__BCC__
+#define	ETHERBOOT16
+#define	inline
+#define	const
+#define	volatile
+#define	setjmp	_setjmp		/* they are that way in libc.a */
+#define	longjmp	_longjmp
+
+/* BCC include files are missing these. */
+typedef unsigned char u_char;
+typedef unsigned short u_short;
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+#endif
+#endif
+
+#if	!defined(ETHERBOOT16) && !defined(ETHERBOOT32)
+Error, neither ETHERBOOT16 nor ETHERBOOT32 defined
+#endif
+
+#if	defined(ETHERBOOT16) && defined(ETHERBOOT32)
+Error, both ETHERBOOT16 and ETHERBOOT32 defined
+#endif
+
+typedef	unsigned long Address;
+
+/* ANSI prototyping macro */
+#ifdef	__STDC__
+#define	P(x)	x
+#else
+#define	P(x)	()
+#endif
+
+#endif
+
+/*
+ * Local variables:
+ *  c-basic-offset: 8
+ * End:
+ */