--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot.amd64/src/org/graalvm/compiler/hotspot/amd64/AMD64HotSpotLeaveCurrentStackFrameOp.java 2017-02-15 16:59:02.171741365 -0800 @@ -0,0 +1,82 @@ +/* + * 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 org.graalvm.compiler.hotspot.amd64; + +import static jdk.vm.ci.amd64.AMD64.rdx; + +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.Opcode; +import org.graalvm.compiler.lir.StandardOp.SaveRegistersOp; +import org.graalvm.compiler.lir.asm.CompilationResultBuilder; +import org.graalvm.compiler.lir.framemap.FrameMap; + +import jdk.vm.ci.code.Register; +import jdk.vm.ci.code.RegisterConfig; +import jdk.vm.ci.code.RegisterSaveLayout; +import jdk.vm.ci.meta.JavaKind; + +/** + * Pops the current frame off the stack including the return address and restores the return + * registers stored on the stack. + */ +@Opcode("LEAVE_CURRENT_STACK_FRAME") +final class AMD64HotSpotLeaveCurrentStackFrameOp extends AMD64HotSpotEpilogueOp { + + public static final LIRInstructionClass TYPE = LIRInstructionClass.create(AMD64HotSpotLeaveCurrentStackFrameOp.class); + + private final SaveRegistersOp saveRegisterOp; + + AMD64HotSpotLeaveCurrentStackFrameOp(SaveRegistersOp saveRegisterOp) { + super(TYPE); + this.saveRegisterOp = saveRegisterOp; + } + + @Override + public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) { + FrameMap frameMap = crb.frameMap; + RegisterConfig registerConfig = frameMap.getRegisterConfig(); + RegisterSaveLayout registerSaveLayout = saveRegisterOp.getMap(frameMap); + Register stackPointer = registerConfig.getFrameRegister(); + + // Restore integer result register. + final int stackSlotSize = frameMap.getTarget().wordSize; + Register integerResultRegister = registerConfig.getReturnRegister(JavaKind.Long); + masm.movptr(integerResultRegister, new AMD64Address(stackPointer, registerSaveLayout.registerToSlot(integerResultRegister) * stackSlotSize)); + masm.movptr(rdx, new AMD64Address(stackPointer, registerSaveLayout.registerToSlot(rdx) * stackSlotSize)); + + // Restore float result register. + Register floatResultRegister = registerConfig.getReturnRegister(JavaKind.Double); + masm.movdbl(floatResultRegister, new AMD64Address(stackPointer, registerSaveLayout.registerToSlot(floatResultRegister) * stackSlotSize)); + + /* + * All of the register save area will be popped of the stack. Only the return address + * remains. + */ + leaveFrameAndRestoreRbp(crb, masm); + + // Remove return address. + masm.addq(stackPointer, crb.target.arch.getReturnAddressSize()); + } +}