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load_elf.h revision 1.4.24.2 
      1 /* -*-C++-*-	$NetBSD: load_elf.h,v 1.4.24.2 2004/08/12 11:41:05 skrll 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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _HPCBOOT_LOAD_ELF_H_
     40 #define	_HPCBOOT_LOAD_ELF_H_
     41 
     42 #include <exec_elf.h>
     43 
     44 class ElfLoader : public Loader {
     45 private:
     46 	Elf_Ehdr _eh;
     47 	Elf_Phdr *_ph;
     48 	Elf_Shdr *_sh;
     49 
     50 	struct _symbol_block {
     51 		BOOL enable;
     52 		char *header;
     53 		size_t header_size;
     54 		Elf_Shdr *shstr;
     55 		off_t stroff;
     56 		Elf_Shdr *shsym;
     57 		off_t symoff;
     58 	} _sym_blk;
     59 
     60 	BOOL is_elf_file(void) {
     61 		return
     62 		    _eh.e_ident[EI_MAG0] == ELFMAG0 &&
     63 		    _eh.e_ident[EI_MAG1] == ELFMAG1 &&
     64 		    _eh.e_ident[EI_MAG2] == ELFMAG2 &&
     65 		    _eh.e_ident[EI_MAG3] == ELFMAG3;
     66 	}
     67 	BOOL read_header(void);
     68 	struct PageTag *load_page(vaddr_t, off_t, size_t, struct PageTag *);
     69 	size_t symbol_block_size(void);
     70 	void load_symbol_block(vaddr_t);
     71 
     72 public:
     73 	ElfLoader(Console *&, MemoryManager *&);
     74 	virtual ~ElfLoader(void);
     75 
     76 	BOOL setFile(File *&);
     77 	size_t memorySize(void);
     78 	BOOL load(void);
     79 	kaddr_t jumpAddr(void);
     80 };
     81 
     82 #endif //_HPCBOOT_LOAD_ELF_H_
     83