firmware/target/hosted/lc-unix.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2010 by Thomas Martitz
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include <string.h> /* size_t */
  23 #include <dlfcn.h>
  24 #include "debug.h"
  25 #include "load_code.h"
  26
  27 void *lc_open(const char *filename, unsigned char *buf, size_t buf_size)
  28 {
  29     (void)buf;
  30     (void)buf_size;
  31     void *handle = dlopen(filename, RTLD_NOW);
  32     if (handle == NULL)
  33     {
  34         DEBUGF("failed to load %s\n", filename);
  35         DEBUGF("lc_open(%s): %s\n", filename, dlerror());
  36     }
  37     return handle;
  38 }
  39
  40 void *lc_get_header(void *handle)
  41 {
  42     char *ret = dlsym(handle, "__header");
  43     if (ret == NULL)
  44         ret = dlsym(handle, "___header");
  45
  46     return ret;
  47 }
  48
  49 void lc_close(void *handle)
  50 {
  51     dlclose(handle);
  52 }
  53
  54 void *lc_open_from_mem(void *addr, size_t blob_size)
  55 {
  56     (void)addr;
  57     (void)blob_size;
  58     /* we don't support loading code from memory on application builds,
  59      * it doesn't make sense (since it means writing the blob to disk again and
  60      * then falling back to load from disk) and requires the ability to write
  61      * to an executable directory */
  62     return NULL;
  63 }