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load.h revision 1.6 
      1 /* -*-C++-*-	$NetBSD: load.h,v 1.6 2008/04/28 20:23:20 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _HPCBOOT_LOAD_H_
     33 #define	_HPCBOOT_LOAD_H_
     34 
     35 #include <hpcboot.h>
     36 #include <machine/endian_machdep.h>
     37 
     38 #undef PAGE_LINK_DUMP	// debug use only. if defined, you can't boot.
     39 class Console;
     40 class MemoryManager;
     41 class File;
     42 
     43 class Loader {
     44 private:
     45 	struct PageTag *_pvec_prev, *_opvec_prev, *_pvec_clr;
     46 	paddr_t _pvec_clr_paddr;
     47 	int _nload_link, _n0clr_link;
     48 	size_t _tpsz;
     49 	struct PageTag *_load_page(vaddr_t, off_t, size_t, struct PageTag *);
     50 	BOOL _error;
     51 
     52 protected:
     53 	BOOL		_debug;
     54 	Console	*&_cons;
     55 	MemoryManager	*&_mem;
     56 	File		*_file;
     57 
     58 	paddr_t _page_tag_start;
     59 	paddr_t _kernend;
     60 
     61 	Loader(Console *&, MemoryManager *&);
     62 
     63 	void _load_segment_start(void);
     64 	void _load_segment(vaddr_t, vsize_t, off_t, size_t);
     65 	void _load_memory(vaddr_t, vsize_t, void *);
     66 	void _load_segment_end(void);
     67 	BOOL _load_success(void) const { return !_error; };
     68 
     69 public:
     70 	virtual ~Loader(void) { /* NO-OP */ }
     71 
     72 	BOOL &setDebug(void) { return _debug; }
     73 
     74 	virtual BOOL setFile(File *&file) { _file = file; return TRUE; }
     75 	virtual size_t memorySize(void) = 0;
     76 	virtual BOOL load(void) = 0;
     77 	virtual kaddr_t jumpAddr(void) = 0;
     78 
     79 	paddr_t tagStart(void);
     80 	BOOL loadExtData(void);
     81 	void loadEnd(void);
     82 
     83 	void tagDump(int);	// for debug
     84 
     85 	static LoaderOps objectFormat(File &);
     86 };
     87 
     88 #endif //_HPCBOOT_LOAD_H_
     89