bionic: Add page size 16KiB compat tests
The test check whether an ELF built for 4KiB max-page-size can be
loaded on a 16KiB page-sized device.
This test is only run on devices with 16KiB base page size.
Bug: 339709616
Test: adb shell setprop bionic.linker.16kb.app_compat.enabled [true|false]
Test: atest bionic-unit-tests
Test: atest CtsBionicTestCases
Change-Id: Ibd8a1c2e2d59bf13d7328377d012430c16b8e76c
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
diff --git a/tests/page_size_compat_helpers.h b/tests/page_size_compat_helpers.h
new file mode 100644
index 0000000..2f0f1d0
--- /dev/null
+++ b/tests/page_size_compat_helpers.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2024 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.
+ */
+
+#pragma once
+
+#include "elf_max_page_size.h"
+#include "gtest_globals.h"
+
+#include <android-base/stringprintf.h>
+
+#include <string>
+
+#include <dlfcn.h>
+#include <gtest/gtest.h>
+#include <unistd.h>
+
+static inline void OpenTestLibrary(std::string lib, bool expect_fail, void** handle) {
+ void* _handle = dlopen(lib.c_str(), RTLD_NODELETE);
+ const char* dlopen_error = dlerror();
+
+ if (expect_fail) {
+ ASSERT_EQ(_handle, nullptr);
+
+ const std::string expected_error = android::base::StringPrintf(
+ "dlopen failed: \"%s\" program alignment (%d) cannot be smaller than system page size (%d)",
+ lib.c_str(), 4096, getpagesize());
+
+ ASSERT_EQ(expected_error, dlopen_error);
+ } else {
+ ASSERT_NE(_handle, nullptr) << "Failed to dlopen shared library \"" << lib
+ << "\": " << dlopen_error;
+ }
+
+ *handle = _handle;
+}
+
+static inline void CallTestFunction(void* handle) {
+ loader_test_func_t loader_test_func = (loader_test_func_t)dlsym(handle, "loader_test_func");
+ const char* dlsym_error = dlerror();
+
+ ASSERT_EQ(dlsym_error, nullptr) << "Failed to locate symbol \"loader_test_func\": "
+ << dlsym_error;
+
+ int res = loader_test_func();
+ ASSERT_EQ(res, TEST_RESULT_BASE + TEST_RESULT_INCREMENT);
+
+ // Call loader_test_func() twice to ensure we can modify writeable data and bss data
+ res = loader_test_func();
+ ASSERT_EQ(res, TEST_RESULT_BASE + (2 * TEST_RESULT_INCREMENT));
+}