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load_elf.h revision 1.7.78.1 
      1 /* -*-C++-*-	$NetBSD: load_elf.h,v 1.7.78.1 2008/05/16 02:22:24 yamt 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_ELF_H_
     33 #define	_HPCBOOT_LOAD_ELF_H_
     34 
     35 #include <exec_elf.h>
     36 
     37 class ElfLoader : public Loader {
     38 private:
     39 	Elf_Ehdr _eh;
     40 	Elf_Phdr *_ph;
     41 	Elf_Shdr *_sh;
     42 
     43 	struct _symbol_block {
     44 		BOOL enable;
     45 		char *header;
     46 		size_t header_size;
     47 		Elf_Shdr *shstr;
     48 		off_t stroff;
     49 		Elf_Shdr *shsym;
     50 		off_t symoff;
     51 	} _sym_blk;
     52 
     53 	BOOL is_elf_file(void) {
     54 		return
     55 		    _eh.e_ident[EI_MAG0] == ELFMAG0 &&
     56 		    _eh.e_ident[EI_MAG1] == ELFMAG1 &&
     57 		    _eh.e_ident[EI_MAG2] == ELFMAG2 &&
     58 		    _eh.e_ident[EI_MAG3] == ELFMAG3;
     59 	}
     60 	BOOL read_header(void);
     61 	struct PageTag *load_page(vaddr_t, off_t, size_t, struct PageTag *);
     62 	size_t symbol_block_size(void);
     63 	void load_symbol_block(vaddr_t);
     64 
     65 public:
     66 	ElfLoader(Console *&, MemoryManager *&);
     67 	virtual ~ElfLoader(void);
     68 
     69 	BOOL setFile(File *&);
     70 	size_t memorySize(void);
     71 	BOOL load(void);
     72 	kaddr_t jumpAddr(void);
     73 };
     74 
     75 #endif //_HPCBOOT_LOAD_ELF_H_
     76