/* -*-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_