1 /* 2 * Test dynamic loading. 3 * 4 * Copyright (C) 2018 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #include <l4/util/util.h> 23 #include <dlfcn.h> 24 #include <stdio.h> 25 26 static const char *libname = "rom/libdl_test_data.so"; 27 28 int main(void) 29 { 30 const char *buffer; 31 32 /* Obtain the linked data. */ 33 34 void *handle = dlopen(libname, RTLD_NOW); 35 const char *(*get_data)(void); 36 37 if (handle == NULL) 38 { 39 printf("Could not open %s\n", libname); 40 return 1; 41 } 42 43 get_data = dlsym(handle, "get_data"); 44 45 /* Load and show the data. */ 46 47 buffer = get_data(); 48 puts(buffer); 49 50 l4_sleep_forever(); 51 return 0; 52 }