Add tests for dynamic ELF TLS
Bug: http://b/78026329
Test: bionic unit tests
Merged-In: I508fa38b331eeec7dae53039b4b1ec6cedea3034
Change-Id: I508fa38b331eeec7dae53039b4b1ec6cedea3034
diff --git a/tests/elftls_test.cpp b/tests/elftls_test.cpp
index 11d41ce..2d83d70 100644
--- a/tests/elftls_test.cpp
+++ b/tests/elftls_test.cpp
@@ -83,3 +83,17 @@
ASSERT_EQ(8, bump_static_tls_var_2());
}).join();
}
+
+// Because this C++ source file is built with -fpic, the compiler will access
+// this variable using a GD model. Typically, the static linker will relax the
+// GD to LE, but the arm32 linker doesn't do TLS relaxations, so we can test
+// calling __tls_get_addr in a static executable. The static linker knows that
+// the main executable's TlsIndex::module_id is 1 and writes that into the GOT.
+__thread int tlsvar_general = 30;
+
+TEST(elftls, general) {
+ ASSERT_EQ(31, ++tlsvar_general);
+ std::thread([] {
+ ASSERT_EQ(31, ++tlsvar_general);
+ }).join();
+}