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 * Copyright (c) 2015, 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.
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package org.graalvm.compiler.hotspot.sparc;

import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG;
import static jdk.vm.ci.code.ValueUtil.asRegister;

import org.graalvm.compiler.asm.sparc.SPARCMacroAssembler;
import org.graalvm.compiler.lir.LIRInstructionClass;
import org.graalvm.compiler.lir.Opcode;
import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
import org.graalvm.compiler.lir.sparc.SPARCLIRInstruction;

import jdk.vm.ci.code.Register;
import jdk.vm.ci.meta.AllocatableValue;
import jdk.vm.ci.sparc.SPARCKind;

Jumps to the exception handler specified by address and leaves the current window. It does not modify the i7 register, as the exception handler stub expects the throwing pc in it. 

See also:
Runtime1::generate_handle_exception c1_Runtime1_sparc.cpp
SharedRuntime::generate_deopt_blob at exception_in_tls_offset (sharedRuntime_sparc.cpp)
/**
 * Jumps to the exception handler specified by {@link #address} and leaves the current window. It
 * does not modify the i7 register, as the exception handler stub expects the throwing pc in it.
 * <p>
 * See also:
 * <li>Runtime1::generate_handle_exception c1_Runtime1_sparc.cpp
 * <li>SharedRuntime::generate_deopt_blob at exception_in_tls_offset (sharedRuntime_sparc.cpp)
 */
@Opcode("JUMP_TO_EXCEPTION_HANDLER")
final class SPARCHotSpotJumpToExceptionHandlerOp extends SPARCLIRInstruction {
    public static final LIRInstructionClass<SPARCHotSpotJumpToExceptionHandlerOp> TYPE = LIRInstructionClass.create(SPARCHotSpotJumpToExceptionHandlerOp.class);
    public static final SizeEstimate SIZE = SizeEstimate.create(2);

    @Use(REG) AllocatableValue address;

    SPARCHotSpotJumpToExceptionHandlerOp(AllocatableValue address) {
        super(TYPE, SIZE);
        this.address = address;
    }

    @Override
    public void emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm) {
        Register addrRegister = asRegister(address, SPARCKind.XWORD);
        masm.jmp(addrRegister);
        masm.restoreWindow();
    }
}