1 /* 2 * Copyright (c) 2012, 2018, 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 24 25 package org.graalvm.compiler.hotspot.sparc; 26 27 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG; 28 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.STACK; 29 import static jdk.vm.ci.sparc.SPARC.g0; 30 import static jdk.vm.ci.sparc.SPARCKind.XWORD; 31 32 import org.graalvm.compiler.asm.sparc.SPARCAddress; 33 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler; 34 import org.graalvm.compiler.core.common.LIRKind; 35 import org.graalvm.compiler.lir.LIRInstructionClass; 36 import org.graalvm.compiler.lir.Opcode; 37 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 38 import org.graalvm.compiler.lir.sparc.SPARCDelayedControlTransfer; 39 import org.graalvm.compiler.lir.sparc.SPARCLIRInstruction; 40 import org.graalvm.compiler.lir.sparc.SPARCMove; 41 42 import jdk.vm.ci.code.Register; 43 import jdk.vm.ci.meta.Value; 44 45 @Opcode("CRUNTIME_CALL_EPILOGUE") 46 final class SPARCHotSpotCRuntimeCallEpilogueOp extends SPARCLIRInstruction { 47 public static final LIRInstructionClass<SPARCHotSpotCRuntimeCallEpilogueOp> TYPE = LIRInstructionClass.create(SPARCHotSpotCRuntimeCallEpilogueOp.class); 48 public static final SizeEstimate SIZE = SizeEstimate.create(11); 49 50 private final int threadLastJavaSpOffset; 51 private final int threadLastJavaPcOffset; 52 private final int threadJavaFrameAnchorFlagsOffset; 53 private final Register thread; 54 @Use({REG, STACK}) protected Value threadTemp; 55 56 SPARCHotSpotCRuntimeCallEpilogueOp(int threadLastJavaSpOffset, int threadLastJavaPcOffset, int threadJavaFrameAnchorFlagsOffset, Register thread, Value threadTemp) { 57 super(TYPE, SIZE); 58 this.threadLastJavaSpOffset = threadLastJavaSpOffset; 59 this.threadLastJavaPcOffset = threadLastJavaPcOffset; 60 this.threadJavaFrameAnchorFlagsOffset = threadJavaFrameAnchorFlagsOffset; 61 this.thread = thread; 62 this.threadTemp = threadTemp; 63 } 64 65 @Override 66 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { 67 68 // Restore the thread register when coming back from the runtime. 69 SPARCMove.move(crb, masm, thread.asValue(LIRKind.value(XWORD)), threadTemp, SPARCDelayedControlTransfer.DUMMY); 70 71 // Reset last Java frame, last Java PC and flags. 72 masm.stx(g0, new SPARCAddress(thread, threadLastJavaSpOffset)); 73 masm.stx(g0, new SPARCAddress(thread, threadLastJavaPcOffset)); 74 masm.stw(g0, new SPARCAddress(thread, threadJavaFrameAnchorFlagsOffset)); 75 } 76 }