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; |
} |
|
/** @} |
*/ |
|