forked from Imagelibrary/binutils-gdb
8d56636a0e
In glibc, the r_debug structure contains (amongst others) the following
fields:
int r_version:
Version number for this protocol. It should be greater than 0.
If r_version is 2, struct r_debug is extended to struct r_debug_extended
with one additional field:
struct r_debug_extended *r_next;
Link to the next r_debug_extended structure. Each r_debug_extended
structure represents a different namespace. The first r_debug_extended
structure is for the default namespace.
1. Change solib_svr4_r_map argument to take the debug base.
2. Add solib_svr4_r_next to find the link map in the next namespace from
the r_next field.
3. Update svr4_current_sos_direct to get the link map in the next namespace
from the r_next field.
4. Don't check shared libraries in other namespaces when updating shared
libraries in a new namespace.
5. Update svr4_same to check the load offset in addition to the name
6. Update svr4_default_sos to also set l_addr_inferior
7. Change the flat solib_list into a per-namespace list using the
namespace's r_debug address to identify the namespace.
Add gdb.base/dlmopen.exp to test this.
To remain backwards compatible with older gdbserver, we reserve the
namespace zero for a flat list of solibs from all namespaces. Subsequent
patches will extend RSP to allow listing libraries grouped by namespace.
This fixes PR 11839.
Co-authored-by: Lu, Hongjiu <hongjiu.lu@intel.com>
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/* This testcase is part of GDB, the GNU debugger.
|
|
|
|
Copyright 2021 Free Software Foundation, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
#define _GNU_SOURCE
|
|
#include <dlfcn.h>
|
|
#include <stddef.h>
|
|
#include <assert.h>
|
|
#include <unistd.h>
|
|
|
|
volatile int wait_for_gdb = 1;
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
void *handle[4];
|
|
int (*fun) (int);
|
|
Lmid_t lmid;
|
|
int dl;
|
|
|
|
handle[0] = dlmopen (LM_ID_NEWLM, DSO1_NAME, RTLD_LAZY | RTLD_LOCAL);
|
|
assert (handle[0] != NULL);
|
|
|
|
dlinfo (handle[0], RTLD_DI_LMID, &lmid);
|
|
|
|
handle[1] = dlopen (DSO1_NAME, RTLD_LAZY | RTLD_LOCAL);
|
|
assert (handle[1] != NULL);
|
|
|
|
handle[2] = dlmopen (LM_ID_NEWLM, DSO1_NAME, RTLD_LAZY | RTLD_LOCAL);
|
|
assert (handle[2] != NULL);
|
|
|
|
handle[3] = dlmopen (lmid, DSO2_NAME, RTLD_LAZY | RTLD_LOCAL);
|
|
assert (handle[3] != NULL);
|
|
|
|
alarm (20);
|
|
while (wait_for_gdb != 0)
|
|
usleep (1);
|
|
|
|
for (dl = 0; dl < 4; ++dl)
|
|
{
|
|
fun = dlsym (handle[dl], "inc");
|
|
assert (fun != NULL);
|
|
|
|
fun (42);
|
|
|
|
dlclose (handle[dl]);
|
|
}
|
|
|
|
return 0; /* bp.main */
|
|
}
|