| /* |
| * Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2020 SAP SE. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include "precompiled.hpp" |
| #include "runtime/interfaceSupport.inline.hpp" |
| #include "runtime/stubRoutines.hpp" |
| #include "runtime/vmOperations.hpp" |
| #include "runtime/vmThread.hpp" |
| #include "utilities/globalDefinitions.hpp" |
| #include "utilities/vmError.hpp" |
| #include "unittest.hpp" |
| |
| static const intptr_t pattern = LP64_ONLY(0xABCDABCDABCDABCDULL) NOT_LP64(0xABCDABCD); |
| static intptr_t* invalid_address = (intptr_t*)(intptr_t) NOT_AIX(os::min_page_size()) AIX_ONLY(-1); |
| |
| TEST_VM(os, safefetch_can_use) { |
| // Once VM initialization is through, |
| // safefetch should work on every platform. |
| ASSERT_TRUE(CanUseSafeFetch32()); |
| } |
| |
| TEST_VM(os, safefetch_positive) { |
| intptr_t v = pattern; |
| intptr_t a = SafeFetchN(&v, 1); |
| ASSERT_EQ(v, a); |
| } |
| |
| TEST_VM(os, safefetch_negative) { |
| intptr_t a = SafeFetchN(invalid_address, pattern); |
| ASSERT_EQ(pattern, a); |
| a = SafeFetchN(invalid_address, ~pattern); |
| ASSERT_EQ(~pattern, a); |
| } |
| |
| class VM_TestSafeFetchAtSafePoint : public VM_GTestExecuteAtSafepoint { |
| public: |
| void doit() { |
| // Regression test for JDK-8257828 |
| // Should not crash. |
| intptr_t a = SafeFetchN(invalid_address, pattern); |
| ASSERT_EQ(pattern, a); |
| a = SafeFetchN(invalid_address, ~pattern); |
| ASSERT_EQ(~pattern, a); |
| } |
| }; |
| |
| TEST_VM(os, safefetch_negative_at_safepoint) { |
| VM_TestSafeFetchAtSafePoint op; |
| ThreadInVMfromNative invm(JavaThread::current()); |
| VMThread::execute(&op); |
| } |