arch/all-pc/bootstrap/memory_io.c

   1 /*
   2     Copyright © 1995-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <elfloader.h>
   7 #include <string.h>
   8
   9 void *open_file(struct ELFNode *n, unsigned int *err)
  10 {
  11     /*
  12      * Our files are already loaded into memory as raw data.
  13      * Return a pointer to the beginning of the file.
  14      * NULL pointer is a valid result here (on EFI machines the first
  15      * module can be located at address 0). This is why error code
  16      * is a separate value here.
  17      */
  18     *err = 0;
  19     return n->eh;
  20 }
  21
  22 void close_file(void *file)
  23 {
  24     /* No special action is needed */
  25 }
  26
  27 int read_block(void *file, unsigned long offset, void *dest, unsigned long length)
  28 {
  29     memcpy(dest, file + offset, length);
  30     return 0;
  31 }
  32
  33 void *load_block(void *file, unsigned long offset, unsigned long length, unsigned int *err)
  34 {
  35     *err = 0;
  36     return file + offset;
  37 }
  38
  39 void free_block(void *addr)
  40 {
  41     /* No special action is needed */
  42 }