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-rw-r--r--gdb/testsuite/gdb.base/tls-dlobj.c311
1 files changed, 311 insertions, 0 deletions
diff --git a/gdb/testsuite/gdb.base/tls-dlobj.c b/gdb/testsuite/gdb.base/tls-dlobj.c
new file mode 100644
index 0000000..322bdda
--- /dev/null
+++ b/gdb/testsuite/gdb.base/tls-dlobj.c
@@ -0,0 +1,311 @@
+/* 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/>. */
+
+#include <dlfcn.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+typedef void (*setter_ftype) (int which, int val);
+
+__thread int tls_main_tbss_1;
+__thread int tls_main_tbss_2;
+__thread int tls_main_tdata_1 = 96;
+__thread int tls_main_tdata_2 = 97;
+
+extern void set_tls_lib10_var (int which, int val);
+extern void set_tls_lib11_var (int which, int val);
+
+volatile int data;
+
+static void
+set_tls_main_var (int which, int val)
+{
+ switch (which)
+ {
+ case 1:
+ tls_main_tbss_1 = val;
+ break;
+ case 2:
+ tls_main_tbss_2 = val;
+ break;
+ case 3:
+ tls_main_tdata_1 = val;
+ break;
+ case 4:
+ tls_main_tdata_2 = val;
+ break;
+ }
+}
+
+void
+use_it (int a)
+{
+ data = a;
+}
+
+static void *
+load_dso (char *dso_name, int n, setter_ftype *setterp)
+{
+ char buf[80];
+ void *sym;
+ void *handle = dlopen (dso_name, RTLD_NOW | RTLD_GLOBAL);
+ if (handle == NULL)
+ {
+ fprintf (stderr, "dlopen of DSO '%s' failed: %s\n", dso_name, dlerror ());
+ exit (1);
+ }
+ sprintf (buf, "set_tls_lib%d_var", n);
+ sym = dlsym (handle, buf);
+ assert (sym != NULL);
+ *setterp = sym;
+
+ /* Some libc implementations (for some architectures) refuse to
+ initialize TLS data structures (specifically, the DTV) without
+ first calling dlsym on one of the TLS symbols. */
+ sprintf (buf, "tls_lib%d_tdata_1", n);
+ assert (dlsym (handle, buf) != NULL);
+
+ return handle;
+}
+
+int
+main (int argc, char **argv)
+{
+ int i, status;
+ setter_ftype s0, s1, s2, s3, s4, s10, s11;
+ void *h1 = load_dso (OBJ1, 1, &s1);
+ void *h2 = load_dso (OBJ2, 2, &s2);
+ void *h3 = load_dso (OBJ3, 3, &s3);
+ void *h4 = load_dso (OBJ4, 4, &s4);
+ s0 = set_tls_main_var;
+ s10 = set_tls_lib10_var;
+ s11 = set_tls_lib11_var;
+
+ use_it (0); /* main-breakpoint-1 */
+
+ /* Set TLS variables in main program and all libraries. */
+ for (i = 1; i <= 4; i++)
+ s0 (i, 10 + i);
+ for (i = 1; i <= 4; i++)
+ s1 (i, 110 + i);
+ for (i = 1; i <= 4; i++)
+ s2 (i, 210 + i);
+ for (i = 1; i <= 4; i++)
+ s3 (i, 310 + i);
+ for (i = 1; i <= 4; i++)
+ s4 (i, 410 + i);
+ for (i = 1; i <= 4; i++)
+ s10 (i, 1010 + i);
+ for (i = 1; i <= 4; i++)
+ s11 (i, 1110 + i);
+
+ use_it (0); /* main-breakpoint-2 */
+
+ /* Unload lib2 and lib3. */
+ status = dlclose (h2);
+ assert (status == 0);
+ status = dlclose (h3);
+ assert (status == 0);
+
+ /* Set TLS variables in main program and in libraries which are still
+ loaded. */
+ for (i = 1; i <= 4; i++)
+ s0 (i, 20 + i);
+ for (i = 1; i <= 4; i++)
+ s1 (i, 120 + i);
+ for (i = 1; i <= 4; i++)
+ s4 (i, 420 + i);
+ for (i = 1; i <= 4; i++)
+ s10 (i, 1020 + i);
+ for (i = 1; i <= 4; i++)
+ s11 (i, 1120 + i);
+
+ use_it (0); /* main-breakpoint-3 */
+
+ /* Load lib3. */
+ h3 = load_dso (OBJ3, 3, &s3);
+
+ /* Set TLS vars again; currently, only lib2 is not loaded. */
+ for (i = 1; i <= 4; i++)
+ s0 (i, 30 + i);
+ for (i = 1; i <= 4; i++)
+ s1 (i, 130 + i);
+ for (i = 1; i <= 4; i++)
+ s3 (i, 330 + i);
+ for (i = 1; i <= 4; i++)
+ s4 (i, 430 + i);
+ for (i = 1; i <= 4; i++)
+ s10 (i, 1030 + i);
+ for (i = 1; i <= 4; i++)
+ s11 (i, 1130 + i);
+
+ use_it (0); /* main-breakpoint-4 */
+
+ /* Unload lib1 and lib4; load lib2. */
+ status = dlclose (h1);
+ assert (status == 0);
+ status = dlclose (h4);
+ assert (status == 0);
+ h2 = load_dso (OBJ2, 2, &s2);
+
+ /* Set TLS vars; currently, lib2 and lib3 are loaded,
+ lib1 and lib4 are not. */
+ for (i = 1; i <= 4; i++)
+ s0 (i, 40 + i);
+ for (i = 1; i <= 4; i++)
+ s2 (i, 240 + i);
+ for (i = 1; i <= 4; i++)
+ s3 (i, 340 + i);
+ for (i = 1; i <= 4; i++)
+ s10 (i, 1040 + i);
+ for (i = 1; i <= 4; i++)
+ s11 (i, 1140 + i);
+
+ use_it (0); /* main-breakpoint-5 */
+
+ /* Load lib4 and lib1. Unload lib2. */
+ h4 = load_dso (OBJ4, 4, &s4);
+ h1 = load_dso (OBJ1, 1, &s1);
+ status = dlclose (h2);
+ assert (status == 0);
+
+ /* Set TLS vars; currently, lib1, lib3, and lib4 are loaded;
+ lib2 is not loaded. */
+ for (i = 1; i <= 4; i++)
+ s0 (i, 50 + i);
+ for (i = 1; i <= 4; i++)
+ s1 (i, 150 + i);
+ for (i = 1; i <= 4; i++)
+ s3 (i, 350 + i);
+ for (i = 1; i <= 4; i++)
+ s4 (i, 450 + i);
+ for (i = 1; i <= 4; i++)
+ s10 (i, 1050 + i);
+ for (i = 1; i <= 4; i++)
+ s11 (i, 1150 + i);
+
+ use_it (0); /* main-breakpoint-6 */
+
+ /* Load lib2, unload lib1, lib3, and lib4; then load lib3 again. */
+ h2 = load_dso (OBJ2, 2, &s2);
+ status = dlclose (h1);
+ assert (status == 0);
+ status = dlclose (h3);
+ assert (status == 0);
+ status = dlclose (h4);
+ assert (status == 0);
+ h3 = load_dso (OBJ3, 3, &s3);
+
+ /* Set TLS vars; currently, lib2 and lib3 are loaded;
+ lib1 and lib4 are not loaded. */
+ for (i = 1; i <= 4; i++)
+ s0 (i, 60 + i);
+ for (i = 1; i <= 4; i++)
+ s2 (i, 260 + i);
+ for (i = 1; i <= 4; i++)
+ s3 (i, 360 + i);
+ for (i = 1; i <= 4; i++)
+ s10 (i, 1060 + i);
+ for (i = 1; i <= 4; i++)
+ s11 (i, 1160 + i);
+
+ use_it (0); /* main-breakpoint-7 */
+
+ /* Unload lib3 and lib2, then (re)load lib4, lib3, lib2, and lib1,
+ in that order. */
+ status = dlclose (h3);
+ assert (status == 0);
+ status = dlclose (h2);
+ assert (status == 0);
+ h4 = load_dso (OBJ4, 4, &s4);
+ h3 = load_dso (OBJ3, 3, &s3);
+ h2 = load_dso (OBJ2, 2, &s2);
+ h1 = load_dso (OBJ1, 1, &s1);
+
+ /* Set TLS vars; currently, lib1, lib2, lib3, and lib4 are all
+ loaded. */
+ for (i = 1; i <= 4; i++)
+ s0 (i, 70 + i);
+ for (i = 1; i <= 4; i++)
+ s1 (i, 170 + i);
+ for (i = 1; i <= 4; i++)
+ s2 (i, 270 + i);
+ for (i = 1; i <= 4; i++)
+ s3 (i, 370 + i);
+ for (i = 1; i <= 4; i++)
+ s4 (i, 470 + i);
+ for (i = 1; i <= 4; i++)
+ s10 (i, 1070 + i);
+ for (i = 1; i <= 4; i++)
+ s11 (i, 1170 + i);
+
+ use_it (0); /* main-breakpoint-8 */
+
+ /* Unload lib3, lib1, and lib4. */
+ status = dlclose (h3);
+ assert (status == 0);
+ status = dlclose (h1);
+ assert (status == 0);
+ status = dlclose (h4);
+ assert (status == 0);
+
+ /* Set TLS vars; currently, lib2 is loaded; lib1, lib3, and lib4 are
+ not. */
+ for (i = 1; i <= 4; i++)
+ s0 (i, 80 + i);
+ for (i = 1; i <= 4; i++)
+ s2 (i, 280 + i);
+ for (i = 1; i <= 4; i++)
+ s10 (i, 1080 + i);
+ for (i = 1; i <= 4; i++)
+ s11 (i, 1180 + i);
+
+ use_it (0); /* main-breakpoint-9 */
+
+ /* Load lib3, unload lib2, load lib4. */
+ h3 = load_dso (OBJ3, 3, &s3);
+ status = dlclose (h2);
+ assert (status == 0);
+ h4 = load_dso (OBJ4, 4, &s4);
+
+ /* Set TLS vars; currently, lib3 and lib4 are loaded; lib1 and lib2
+ are not. */
+ for (i = 1; i <= 4; i++)
+ s0 (i, 90 + i);
+ for (i = 1; i <= 4; i++)
+ s3 (i, 390 + i);
+ for (i = 1; i <= 4; i++)
+ s4 (i, 490 + i);
+ for (i = 1; i <= 4; i++)
+ s10 (i, 1090 + i);
+ for (i = 1; i <= 4; i++)
+ s11 (i, 1190 + i);
+
+ use_it (0); /* main-breakpoint-10 */
+
+ /* Attempt to keep variables in the main program from being optimized
+ away. */
+ use_it (tls_main_tbss_1);
+ use_it (tls_main_tbss_2);
+ use_it (tls_main_tdata_1);
+ use_it (tls_main_tdata_2);
+
+ use_it (100); /* main-breakpoint-last */
+
+ return 0;
+}
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