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OutOfLineINL_jdk_internal_misc_Unsafe.cpp
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/*******************************************************************************
* Copyright IBM Corp. and others 2016
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at https://www.eclipse.org/legal/epl-2.0/
* or the Apache License, Version 2.0 which accompanies this distribution and
* is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following
* Secondary Licenses when the conditions for such availability set
* forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
* General Public License, version 2 with the GNU Classpath
* Exception [1] and GNU General Public License, version 2 with the
* OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] https://openjdk.org/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
*******************************************************************************/
#include "OutOfLineINL.hpp"
#include "BytecodeAction.hpp"
#include "UnsafeAPI.hpp"
extern "C" {
/* sun.misc.Unsafe: public native void fullFence(); */
VM_BytecodeAction
OutOfLineINL_jdk_internal_misc_Unsafe_fullFence(J9VMThread *currentThread, J9Method *method)
{
VM_UnsafeAPI::fullFence();
VM_OutOfLineINL_Helpers::returnVoid(currentThread, 1);
return EXECUTE_BYTECODE;
}
/* sun.misc.Unsafe: public final native java.lang.Object compareAndExchangeObject(java.lang.Object obj, long offset, java.lang.Object compareValue, java.lang.Object swapValue); */
VM_BytecodeAction
OutOfLineINL_jdk_internal_misc_Unsafe_compareAndExchangeObject(J9VMThread *currentThread, J9Method *method)
{
j9object_t *swapValue = (j9object_t*)currentThread->sp;
j9object_t *compareValue = (j9object_t*)(currentThread->sp + 1);
UDATA offset = (UDATA)*(I_64*)(currentThread->sp + 2);
j9object_t obj = *(j9object_t*)(currentThread->sp + 4);
MM_ObjectAccessBarrierAPI _objectAccessBarrier = MM_ObjectAccessBarrierAPI(currentThread);
#if JAVA_SPEC_VERSION >= 19
currentThread->callOutCount += 1;
#endif /* JAVA_SPEC_VERSION >= 19 */
VM_OutOfLineINL_Helpers::buildInternalNativeStackFrame(currentThread, method);
j9object_t result = VM_UnsafeAPI::compareAndExchangeObject(currentThread, &_objectAccessBarrier, obj, offset, compareValue, swapValue);
VM_OutOfLineINL_Helpers::restoreInternalNativeStackFrame(currentThread);
#if JAVA_SPEC_VERSION >= 19
currentThread->callOutCount -= 1;
#endif /* JAVA_SPEC_VERSION >= 19 */
VM_OutOfLineINL_Helpers::returnObject(currentThread, result, 6);
return EXECUTE_BYTECODE;
}
/* sun.misc.Unsafe: public final native int compareAndExchangeInt(java.lang.Object obj, long offset, int compareValue, int swapValue); */
VM_BytecodeAction
OutOfLineINL_jdk_internal_misc_Unsafe_compareAndExchangeInt(J9VMThread *currentThread, J9Method *method)
{
U_32 swapValue = *(U_32*)currentThread->sp;
U_32 compareValue = *(U_32*)(currentThread->sp + 1);
UDATA offset = (UDATA)*(I_64*)(currentThread->sp + 2);
j9object_t obj = *(j9object_t*)(currentThread->sp + 4);
MM_ObjectAccessBarrierAPI _objectAccessBarrier = MM_ObjectAccessBarrierAPI(currentThread);
#if JAVA_SPEC_VERSION >= 19
currentThread->callOutCount += 1;
#endif /* JAVA_SPEC_VERSION >= 19 */
VM_OutOfLineINL_Helpers::buildInternalNativeStackFrame(currentThread, method);
U_32 result = VM_UnsafeAPI::compareAndExchangeInt(currentThread, &_objectAccessBarrier, obj, offset, compareValue, swapValue);
VM_OutOfLineINL_Helpers::restoreInternalNativeStackFrame(currentThread);
#if JAVA_SPEC_VERSION >= 19
currentThread->callOutCount -= 1;
#endif /* JAVA_SPEC_VERSION >= 19 */
VM_OutOfLineINL_Helpers::returnSingle(currentThread, result, 6);
return EXECUTE_BYTECODE;
}
/* sun.misc.Unsafe: public final native long compareAndExchangeLong(java.lang.Object obj, long offset, long compareValue, long swapValue); */
VM_BytecodeAction
OutOfLineINL_jdk_internal_misc_Unsafe_compareAndExchangeLong(J9VMThread *currentThread, J9Method *method)
{
U_64 swapValue = *(U_64*)currentThread->sp;
U_64 compareValue = *(U_64*)(currentThread->sp + 2);
UDATA offset = (UDATA)*(I_64*)(currentThread->sp + 4);
j9object_t obj = *(j9object_t*)(currentThread->sp + 6);
MM_ObjectAccessBarrierAPI _objectAccessBarrier = MM_ObjectAccessBarrierAPI(currentThread);
#if JAVA_SPEC_VERSION >= 19
currentThread->callOutCount += 1;
#endif /* JAVA_SPEC_VERSION >= 19 */
VM_OutOfLineINL_Helpers::buildInternalNativeStackFrame(currentThread, method);
U_64 result = VM_UnsafeAPI::compareAndExchangeLong(currentThread, &_objectAccessBarrier, obj, offset, compareValue, swapValue);
VM_OutOfLineINL_Helpers::restoreInternalNativeStackFrame(currentThread);
#if JAVA_SPEC_VERSION >= 19
currentThread->callOutCount -= 1;
#endif /* JAVA_SPEC_VERSION >= 19 */
VM_OutOfLineINL_Helpers::returnDouble(currentThread, result, 8);
return EXECUTE_BYTECODE;
}
} /* extern "C" */