/* -*-C++-*-    $NetBSD: load_elf.h,v 1.8 2008/04/28 20:23:20 martin Exp $      */

/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by UCHIYAMA Yasushi.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

#ifndef _HPCBOOT_LOAD_ELF_H_
#define _HPCBOOT_LOAD_ELF_H_

#include <exec_elf.h>

class ElfLoader : public Loader {
private:
       Elf_Ehdr _eh;
       Elf_Phdr *_ph;
       Elf_Shdr *_sh;

       struct _symbol_block {
               BOOL enable;
               char *header;
               size_t header_size;
               Elf_Shdr *shstr;
               off_t stroff;
               Elf_Shdr *shsym;
               off_t symoff;
       } _sym_blk;

       BOOL is_elf_file(void) {
               return
                   _eh.e_ident[EI_MAG0] == ELFMAG0 &&
                   _eh.e_ident[EI_MAG1] == ELFMAG1 &&
                   _eh.e_ident[EI_MAG2] == ELFMAG2 &&
                   _eh.e_ident[EI_MAG3] == ELFMAG3;
       }
       BOOL read_header(void);
       struct PageTag *load_page(vaddr_t, off_t, size_t, struct PageTag *);
       size_t symbol_block_size(void);
       void load_symbol_block(vaddr_t);

public:
       ElfLoader(Console *&, MemoryManager *&);
       virtual ~ElfLoader(void);

       BOOL setFile(File *&);
       size_t memorySize(void);
       BOOL load(void);
       kaddr_t jumpAddr(void);
};

#endif //_HPCBOOT_LOAD_ELF_H_