1 /* 2 * Copyright (c) 2012, 2015, 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.sparc; 24 25 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG; 26 import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.STACK; 27 import static jdk.vm.ci.sparc.SPARC.g0; 28 import static jdk.vm.ci.sparc.SPARCKind.XWORD; 29 30 import org.graalvm.compiler.asm.sparc.SPARCAddress; 31 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler; 32 import org.graalvm.compiler.core.common.LIRKind; 33 import org.graalvm.compiler.lir.LIRInstructionClass; 34 import org.graalvm.compiler.lir.Opcode; 35 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 36 import org.graalvm.compiler.lir.sparc.SPARCDelayedControlTransfer; 37 import org.graalvm.compiler.lir.sparc.SPARCLIRInstruction; 38 import org.graalvm.compiler.lir.sparc.SPARCMove; 39 40 import jdk.vm.ci.code.Register; 41 import jdk.vm.ci.meta.Value; 42 43 @Opcode("CRUNTIME_CALL_EPILOGUE") 44 final class SPARCHotSpotCRuntimeCallEpilogueOp extends SPARCLIRInstruction { 45 public static final LIRInstructionClass<SPARCHotSpotCRuntimeCallEpilogueOp> TYPE = LIRInstructionClass.create(SPARCHotSpotCRuntimeCallEpilogueOp.class); 46 public static final SizeEstimate SIZE = SizeEstimate.create(11); 47 48 private final int threadLastJavaSpOffset; 49 private final int threadLastJavaPcOffset; 50 private final int threadJavaFrameAnchorFlagsOffset; 51 private final Register thread; 52 @Use({REG, STACK}) protected Value threadTemp; 53 54 SPARCHotSpotCRuntimeCallEpilogueOp(int threadLastJavaSpOffset, int threadLastJavaPcOffset, int threadJavaFrameAnchorFlagsOffset, Register thread, Value threadTemp) { 55 super(TYPE, SIZE); 56 this.threadLastJavaSpOffset = threadLastJavaSpOffset; 57 this.threadLastJavaPcOffset = threadLastJavaPcOffset; 58 this.threadJavaFrameAnchorFlagsOffset = threadJavaFrameAnchorFlagsOffset; 59 this.thread = thread; 60 this.threadTemp = threadTemp; 61 } 62 63 @Override 64 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { 65 66 // Restore the thread register when coming back from the runtime. 67 SPARCMove.move(crb, masm, thread.asValue(LIRKind.value(XWORD)), threadTemp, SPARCDelayedControlTransfer.DUMMY); 68 69 // Reset last Java frame, last Java PC and flags. 70 masm.stx(g0, new SPARCAddress(thread, threadLastJavaSpOffset)); 71 masm.stx(g0, new SPARCAddress(thread, threadLastJavaPcOffset)); 72 masm.stw(g0, new SPARCAddress(thread, threadJavaFrameAnchorFlagsOffset)); 73 } 74 }