1 /* 2 * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.hotspot.aarch64; 24 25 import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler; 26 import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler.ScratchRegister; 27 import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig; 28 import org.graalvm.compiler.lir.LIRInstructionClass; 29 import org.graalvm.compiler.lir.aarch64.AArch64BlockEndOp; 30 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 31 32 import jdk.vm.ci.code.Register; 33 34 /** 35 * Superclass for operations that leave a method's frame. 36 */ 37 abstract class AArch64HotSpotEpilogueOp extends AArch64BlockEndOp { 38 39 private final GraalHotSpotVMConfig config; 40 41 protected AArch64HotSpotEpilogueOp(LIRInstructionClass<? extends AArch64HotSpotEpilogueOp> c, GraalHotSpotVMConfig config) { 42 super(c); 43 this.config = config; 44 } 45 46 protected void leaveFrame(CompilationResultBuilder crb, AArch64MacroAssembler masm, boolean emitSafepoint) { 47 assert crb.frameContext != null : "We never elide frames in aarch64"; 48 crb.frameContext.leave(crb); 49 if (emitSafepoint) { 50 try (ScratchRegister sc = masm.getScratchRegister()) { 51 Register scratch = sc.getRegister(); 52 AArch64HotSpotSafepointOp.emitCode(crb, masm, config, true, scratch, null); 53 } 54 } 55 } 56 }