0N/A/*
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0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
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0N/A
0N/Apackage sun.jvm.hotspot.asm.sparc;
0N/A
0N/Aimport sun.jvm.hotspot.asm.*;
0N/A
0N/Aclass ShiftDecoder extends InstructionDecoder {
0N/A final int op3;
0N/A final String name;
0N/A final int rtlOperation;
0N/A
0N/A ShiftDecoder(int op3, String name, int rtlOperation) {
0N/A this.op3 = op3;
0N/A this.name = name;
0N/A this.rtlOperation = rtlOperation;
0N/A }
0N/A
0N/A private ImmediateOrRegister getShiftLength(int instruction) {
0N/A boolean iBit = isIBitSet(instruction);
0N/A ImmediateOrRegister operand2 = null;
0N/A if (iBit) {
0N/A int value = instruction & SHIFT_COUNT_5_MASK;
0N/A operand2 = new Immediate(new Short((short)value));
0N/A } else {
0N/A operand2 = SPARCRegisters.getRegister(getSourceRegister2(instruction));
0N/A }
0N/A return operand2;
0N/A }
0N/A
0N/A Instruction decode(int instruction,
0N/A SPARCInstructionFactory factory) {
0N/A SPARCRegister rs1 = SPARCRegisters.getRegister(getSourceRegister1(instruction));
0N/A SPARCRegister rd = SPARCRegisters.getRegister(getDestinationRegister(instruction));
0N/A ImmediateOrRegister operand2 = getShiftLength(instruction);
0N/A return factory.newShiftInstruction(name, op3, rtlOperation, rs1, operand2, rd);
0N/A }
0N/A}