Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotLeaveDeoptimizedStackFrameOp.java @ 19148:276bc2752feb
Register plugin for NewFrame intrinsic.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Thu, 05 Feb 2015 03:42:23 +0100 |
parents | 3c7e73362d6a |
children | 8fc336a04d77 |
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/* * Copyright (c) 2013, 2014, 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.amd64; import static com.oracle.graal.amd64.AMD64.*; import static com.oracle.graal.api.code.ValueUtil.*; import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.asm.amd64.*; import com.oracle.graal.lir.*; import com.oracle.graal.lir.asm.*; /** * Pops a deoptimized stack frame off the stack including the return address. */ @Opcode("LEAVE_DEOPTIMIZED_STACK_FRAME") final class AMD64HotSpotLeaveDeoptimizedStackFrameOp extends AMD64HotSpotEpilogueOp { @Use(REG) AllocatableValue frameSize; @Use(REG) AllocatableValue framePointer; public AMD64HotSpotLeaveDeoptimizedStackFrameOp(AllocatableValue frameSize, AllocatableValue initialInfo) { this.frameSize = frameSize; this.framePointer = initialInfo; } @Override public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) { Register stackPointer = crb.frameMap.getRegisterConfig().getFrameRegister(); masm.addq(stackPointer, asRegister(frameSize)); /* * Restore the frame pointer before stack bang because if a stack overflow is thrown it * needs to be pushed (and preserved). */ masm.movq(rbp, asRegister(framePointer)); } }