New test - gdb.base/tls-multiobj.exp

This test exercises GDB's internal TLS support when both the main
program and several shared libraries have TLS variables.  It also
tests existing (non-internal) TLS support too.

It tests using two compilation scenarios, "default", in which
libpthread is not linked with the program and libraries as well
as one which does use libpthread.

It tests link map address to module id mapping code in GDB
in addition to the ability of GDB to traverse TLS data structures
with several libraries in play.

Tested-By: Luis Machado <luis.machado@arm.com>
Approved-By: Luis Machado <luis.machado@arm.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.base/tls-multiobj2.c b/gdb/testsuite/gdb.base/tls-multiobj2.c
new file mode 100644
index 0000000..cea0709
--- /dev/null
+++ b/gdb/testsuite/gdb.base/tls-multiobj2.c
@@ -0,0 +1,26 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2024 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/>.  */
+
+__thread int tls_lib2_tbss_1;
+__thread int tls_lib2_tbss_2;
+__thread int tls_lib2_tdata_1 = 296;
+__thread int tls_lib2_tdata_2 = 297;
+
+void
+lib2_func ()
+{
+}