Hi,
I have the following problem: I would like to debug a program on a
remote target. This program loads a shared library with the dlopen
call, but if the library is loaded, gdb on host-side doesn't find
the appropriate debugging symbols of this library.
I've also tried to make use of the solib-search-path and solib-
absolute-path settings but without success. Both, the application
and the library, which is loaded via dlopen, are compiled using the -
g switch of gcc.
I've issued the following steps:
On target side:
$ gdbserver foo:1234 a.out
On host side:
$ sh4-linux-uclibc-gcc -g test2.c -ldl -Wall
$ sh4-linux-uclibc-gcc -g -shared libtest.c -o libtest.so
$ /opt/sh4-linux-uclibc/bin/sh4-linux-uclibc-gdb a.out
(gdb) set solib-search-path /home/skreyer
(gdb) target remote 192.168.1.201:1234
Remote debugging using 192.168.1.201:1234
(gdb) b main
Breakpoint 1 at 0x400608: file test2.c, line 12.
(gdb) c
Continuing.
Breakpoint 1, main () at test2.c:12
12 lib_handle = dlopen("/libtest.so", RTLD_NOW);
(gdb) n
13 foop = dlsym(lib_handle, "foo");
(gdb) n
15 erg = foop(1, 2);
(gdb) p foo
No symbol "foo" in current context.
The source code:
test2.c:
#include <dlfcn.h>
#include <stdio.h>
typedef int (*funcp)(int, int);
int main()
{
void *lib_handle;
funcp foop;
int erg;
lib_handle = dlopen("/libtest.so", RTLD_NOW);
foop = dlsym(lib_handle, "foo");
erg = foop(1, 2);
printf("%d\n", erg);
dlclose(lib_handle);
return 0;
}
libtest.c:
#include <stdio.h>
int foo(int a, int b)
{
int erg;
erg = a + b;
return erg;
}
Can someone give me a hint on this issue?
TIA,
Steve
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