1 /* 2 * Copyright (c) 2015, 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 jdk.vm.ci.code.ValueUtil.asRegister; 27 28 import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler; 29 import org.graalvm.compiler.lir.LIRInstructionClass; 30 import org.graalvm.compiler.lir.Opcode; 31 import org.graalvm.compiler.lir.asm.CompilationResultBuilder; 32 import org.graalvm.compiler.lir.sparc.SPARCLIRInstruction; 33 34 import jdk.vm.ci.code.Register; 35 import jdk.vm.ci.meta.AllocatableValue; 36 import jdk.vm.ci.sparc.SPARCKind; 37 38 /** 39 * Jumps to the exception handler specified by {@link #address} and leaves the current window. It 40 * does not modify the i7 register, as the exception handler stub expects the throwing pc in it. 41 * <p> 42 * See also: 43 * <li>Runtime1::generate_handle_exception c1_Runtime1_sparc.cpp 44 * <li>SharedRuntime::generate_deopt_blob at exception_in_tls_offset (sharedRuntime_sparc.cpp) 45 */ 46 @Opcode("JUMP_TO_EXCEPTION_HANDLER") 47 final class SPARCHotSpotJumpToExceptionHandlerOp extends SPARCLIRInstruction { 48 public static final LIRInstructionClass<SPARCHotSpotJumpToExceptionHandlerOp> TYPE = LIRInstructionClass.create(SPARCHotSpotJumpToExceptionHandlerOp.class); 49 public static final SizeEstimate SIZE = SizeEstimate.create(2); 50 51 @Use(REG) AllocatableValue address; 52 53 SPARCHotSpotJumpToExceptionHandlerOp(AllocatableValue address) { 54 super(TYPE, SIZE); 55 this.address = address; 56 } 57 58 @Override 59 public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) { 60 Register addrRegister = asRegister(address, SPARCKind.XWORD); 61 masm.jmp(addrRegister); 62 masm.restoreWindow(); 63 } 64 }