Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot.aarch64/src/com/oracle/graal/hotspot/aarch64/AArch64HotSpotUnwindOp.java @ 23217:a1bfeec72458
AArch64 Graal Port
author | twisti |
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date | Thu, 24 Dec 2015 11:43:35 -1000 |
parents | |
children | 827874f0eba1 |
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/* * Copyright (c) 2013, 2015, 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. * * 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 com.oracle.graal.hotspot.aarch64; import static com.oracle.graal.hotspot.HotSpotBackend.UNWIND_EXCEPTION_TO_CALLER; import static jdk.vm.ci.aarch64.AArch64.lr; import static jdk.vm.ci.code.ValueUtil.asRegister; import com.oracle.graal.asm.aarch64.AArch64MacroAssembler; import com.oracle.graal.compiler.common.spi.ForeignCallLinkage; import com.oracle.graal.hotspot.stubs.UnwindExceptionToCallerStub; import com.oracle.graal.lir.LIRInstructionClass; import com.oracle.graal.lir.Opcode; import com.oracle.graal.lir.aarch64.AArch64Call; import com.oracle.graal.lir.asm.CompilationResultBuilder; import jdk.vm.ci.code.CallingConvention; import jdk.vm.ci.code.Register; import jdk.vm.ci.code.RegisterValue; import jdk.vm.ci.hotspot.HotSpotVMConfig; /** * Removes the current frame and jumps to the {@link UnwindExceptionToCallerStub}. */ @Opcode("UNWIND") public class AArch64HotSpotUnwindOp extends AArch64HotSpotEpilogueOp { public static final LIRInstructionClass<AArch64HotSpotUnwindOp> TYPE = LIRInstructionClass.create(AArch64HotSpotUnwindOp.class); @Use protected RegisterValue exception; public AArch64HotSpotUnwindOp(HotSpotVMConfig config, RegisterValue exception) { super(TYPE, config); this.exception = exception; } @Override public void emitCode(CompilationResultBuilder crb, AArch64MacroAssembler masm) { leaveFrame(crb, masm, /* emitSafepoint */false); ForeignCallLinkage linkage = crb.foreignCalls.lookupForeignCall(UNWIND_EXCEPTION_TO_CALLER); CallingConvention cc = linkage.getOutgoingCallingConvention(); assert cc.getArgumentCount() == 2; assert exception.equals(cc.getArgument(0)); // Get return address (is in lr after frame leave) Register returnAddress = asRegister(cc.getArgument(1)); masm.movx(returnAddress, lr); AArch64Call.directJmp(crb, masm, linkage); } }