| /* |
| * Copyright (c) 2012, 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 org.graalvm.compiler.hotspot.amd64; |
| |
| import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG; |
| import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.STACK; |
| import static jdk.vm.ci.amd64.AMD64.rbp; |
| import static jdk.vm.ci.code.ValueUtil.asRegister; |
| import static jdk.vm.ci.code.ValueUtil.isStackSlot; |
| |
| import org.graalvm.compiler.asm.amd64.AMD64Address; |
| import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler; |
| import org.graalvm.compiler.lir.LIRInstructionClass; |
| import org.graalvm.compiler.lir.amd64.AMD64LIRInstruction; |
| import org.graalvm.compiler.lir.asm.CompilationResultBuilder; |
| |
| import jdk.vm.ci.code.Register; |
| import jdk.vm.ci.meta.AllocatableValue; |
| |
| /** |
| * Superclass for operations that use the value of RBP saved in a method's prologue. |
| */ |
| abstract class AMD64HotSpotEpilogueOp extends AMD64LIRInstruction implements AMD64HotSpotRestoreRbpOp { |
| |
| protected AMD64HotSpotEpilogueOp(LIRInstructionClass<? extends AMD64HotSpotEpilogueOp> c) { |
| super(c); |
| } |
| |
| @Use({REG, STACK}) private AllocatableValue savedRbp = PLACEHOLDER; |
| |
| protected void leaveFrameAndRestoreRbp(CompilationResultBuilder crb, AMD64MacroAssembler masm) { |
| leaveFrameAndRestoreRbp(savedRbp, crb, masm); |
| } |
| |
| static void leaveFrameAndRestoreRbp(AllocatableValue savedRbp, CompilationResultBuilder crb, AMD64MacroAssembler masm) { |
| if (isStackSlot(savedRbp)) { |
| // Restoring RBP from the stack must be done before the frame is removed |
| masm.movq(rbp, (AMD64Address) crb.asAddress(savedRbp)); |
| } else { |
| Register framePointer = asRegister(savedRbp); |
| if (!framePointer.equals(rbp)) { |
| masm.movq(rbp, framePointer); |
| } |
| } |
| crb.frameContext.leave(crb); |
| } |
| |
| @Override |
| public void setSavedRbp(AllocatableValue value) { |
| savedRbp = value; |
| } |
| } |