sys/arch/hpc/stand/hpcboot/load_elf.h

   1 /* -*-C++-*-    $NetBSD: load_elf.h,v 1.7 2005/12/11 12:17:28 christos 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_