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AArch64HotSpotDeoptimizeWithExceptionCallerOp.java
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AArch64HotSpotDeoptimizeWithExceptionCallerOp.java
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/*
* Copyright (c) 2013, 2018, Oracle and/or its affiliates. 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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.
*/
package org.graalvm.compiler.hotspot.aarch64;
import static jdk.vm.ci.aarch64.AArch64.lr;
import static jdk.vm.ci.code.ValueUtil.asRegister;
import static org.graalvm.compiler.hotspot.HotSpotHostBackend.DEOPT_BLOB_UNPACK_WITH_EXCEPTION_IN_TLS;
import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler;
import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;
import org.graalvm.compiler.lir.LIRInstructionClass;
import org.graalvm.compiler.lir.Opcode;
import org.graalvm.compiler.lir.aarch64.AArch64Call;
import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
import jdk.vm.ci.code.Register;
import jdk.vm.ci.meta.Value;
/**
* Removes the current frame and tail calls the uncommon trap routine.
*/
@Opcode("DEOPT_WITH_EXCEPTION_IN_CALLER")
public class AArch64HotSpotDeoptimizeWithExceptionCallerOp extends AArch64HotSpotEpilogueOp {
public static final LIRInstructionClass<AArch64HotSpotDeoptimizeWithExceptionCallerOp> TYPE = LIRInstructionClass.create(AArch64HotSpotDeoptimizeWithExceptionCallerOp.class);
@Use(OperandFlag.REG) private Value exception;
public AArch64HotSpotDeoptimizeWithExceptionCallerOp(GraalHotSpotVMConfig config, Value exception, Register thread) {
super(TYPE, config, thread);
this.exception = exception;
}
@Override
public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) {
Register exc = asRegister(exception);
leaveFrame(crb, masm, /* emitSafepoint */false, false);
// Save exception oop in TLS
masm.str(64, exc, masm.makeAddress(thread, config.threadExceptionOopOffset, 8));
// Store original return address in TLS
masm.str(64, lr, masm.makeAddress(thread, config.threadExceptionPcOffset, 8));
AArch64Call.directJmp(crb, masm, crb.foreignCalls.lookupForeignCall(DEOPT_BLOB_UNPACK_WITH_EXCEPTION_IN_TLS));
}
}