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/*
* 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);
}
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