Add tests for static ELF TLS
Bug: http://b/78026329
Test: bionic unit tests
Change-Id: I806f2bd193998dfe352372476104876edb27aebf
diff --git a/tests/libs/elftls_tprel.cpp b/tests/libs/elftls_tprel.cpp
new file mode 100644
index 0000000..eb2fd93
--- /dev/null
+++ b/tests/libs/elftls_tprel.cpp
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+// This shared object tests TPREL relocations in the dynamic linker. It's always
+// part of static TLS.
+
+// For accesses to these variables, the bfd and lld linkers generate a TPREL
+// relocation with no symbol but a non-zero addend.
+__attribute__((tls_model("initial-exec"))) static __thread int tls_var_1 = 3;
+__attribute__((tls_model("initial-exec"))) static __thread int tls_var_2 = 7;
+
+extern "C" int bump_static_tls_var_1() {
+ return ++tls_var_1;
+}
+
+extern "C" int bump_static_tls_var_2() {
+ return ++tls_var_2;
+}
+
+__attribute__((tls_model("initial-exec"), weak)) extern "C" __thread int missing_weak_tls;
+
+extern "C" int* missing_weak_tls_addr() {
+ // The dynamic linker should resolve a TPREL relocation to this symbol to 0,
+ // which this function adds to the thread pointer.
+ return &missing_weak_tls;
+}