mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
a64afc2252
libthread_db is loaded once GDB encounters libpthread, and at this
point, ld.so may not have been processed by GDB yet. As a result,
_rtld_global cannot be accessed by regular means from libthread_db.
To make this work until GDB can be fixed, acess _rtld_global through
a pointer stored in libpthread.
The new test does not reproduce bug 27744 with
--disable-hardcoded-path-in-tests, but is still a valid smoke test.
With --enable-hardcoded-path-in-tests, it is necessary to avoid
add-symbol-file because this can tickle a GDB bug.
Fixes commit 1daccf403b ("nptl: Move
stack list variables into _rtld_global").
Tested-by: Emil Velikov <emil.velikov@collabora.com>
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* Initialization function of thread debugger support library.
|
|
Copyright (C) 1999-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include "thread_dbP.h"
|
|
|
|
int __td_debug;
|
|
|
|
|
|
td_err_e
|
|
td_init (void)
|
|
{
|
|
/* XXX We have to figure out what has to be done. */
|
|
LOG ("td_init");
|
|
return TD_OK;
|
|
}
|
|
|
|
bool
|
|
__td_ta_rtld_global (td_thragent_t *ta)
|
|
{
|
|
if (ta->ta_addr__rtld_global == 0)
|
|
{
|
|
psaddr_t rtldglobalp;
|
|
if (DB_GET_VALUE (rtldglobalp, ta, __nptl_rtld_global, 0) == TD_OK)
|
|
ta->ta_addr__rtld_global = rtldglobalp;
|
|
else
|
|
ta->ta_addr__rtld_global = (void *) -1;
|
|
}
|
|
|
|
return ta->ta_addr__rtld_global != (void *)-1;
|
|
}
|