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  1. /*
  2.  * Copyright (c) 2008 Jiri Svoboda
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup generic
  30.  * @{
  31.  */
  32. /** @file
  33.  * @brief ELF loader structures and public functions.
  34.  */
  35.  
  36. #ifndef ELF_LOAD_H_
  37. #define ELF_LOAD_H_
  38.  
  39. #include <arch/elf.h>
  40. #include <sys/types.h>
  41.  
  42. #include "elf.h"
  43. #include "pcb.h"
  44.  
  45. /**
  46.  * Some data extracted from the headers are stored here
  47.  */
  48. typedef struct {
  49.     /** Entry point */
  50.     entry_point_t entry;
  51.  
  52.     /** ELF interpreter name or NULL if statically-linked */
  53.     char *interp;
  54.  
  55.     /** Pointer to the dynamic section */
  56.     void *dynamic;
  57. } elf_info_t;
  58.  
  59. /**
  60.  * Holds information about an ELF binary being loaded.
  61.  */
  62. typedef struct {
  63.     /** Filedescriptor of the file from which we are loading */
  64.     int fd;
  65.  
  66.     /** Difference between run-time addresses and link-time addresses */
  67.     uintptr_t bias;
  68.  
  69.     /** A copy of the ELF file header */
  70.     elf_header_t *header;
  71.  
  72.     /** Store extracted info here */
  73.     elf_info_t *info;
  74. } elf_ld_t;
  75.  
  76. int elf_load_file(char *file_name, size_t so_bias, elf_info_t *info);
  77. void elf_run(elf_info_t *info);
  78. int elf_create_pcb(elf_info_t *info);
  79.  
  80. #endif
  81.  
  82. /** @}
  83.  */
  84.