| 0,0 → 1,99 |
|---|
| /* |
| * Copyright (c) 2008 Jiri Svoboda |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup rtld |
| * @brief Test dynamic linking capabilities. |
| * @{ |
| */ |
| /** |
| * @file |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <dlfcn.h> |
| |
| static void kputint(unsigned i) |
| { |
| // unsigned dummy; |
| // asm volatile ( |
| // "movl $30, %%eax;" |
| // "int $0x30" |
| // : "=d" (dummy) /* output - %edx clobbered */ |
| // : "d" (i) /* input */ |
| // : "%eax","%ecx" /* all scratch registers clobbered */ |
| // ); |
| /* |
| asm volatile ( |
| "mr %%r3, %0\n" |
| "li %%r9, 32\n" |
| "sc\n" |
| : |
| : "r" (i) |
| : "%r3","%r9" |
| ); |
| */ |
| } |
| |
| typedef int (*fptr_t)(void); |
| |
| int main(int argc, char *argv[]) |
| { |
| void *a; |
| void *s; |
| fptr_t fun; |
| int i; |
| |
| char *lib_name; |
| char *sym_name; |
| |
| // kputint(-1); |
| printf("Hello from dltest!\n"); |
| |
| lib_name = "libtest.so.0"; |
| sym_name = "test_func"; |
| |
| a = dlopen(lib_name, 0); |
| if (a != NULL) { |
| s = dlsym(a, sym_name); |
| printf("symbol '%s' = 0x%lx\n", sym_name, (long) s); |
| } else { |
| printf("failed to dlopen() library '%s'\n", lib_name); |
| } |
| |
| printf("Run dynamically-resolved function '%s'...\n", sym_name); |
| fun = (fptr_t) s; |
| i = (*fun)(); |
| printf("Done. (returned 0x%x)\n", i); |
| |
| return 0; |
| } |
| |
| /** @} |
| */ |
| |