| /* |
| * 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<AMD64HotSpotLeaveCurrentStackFrameOp> 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()); |
| } |
| } |