140 lines
3.4 KiB
C#
140 lines
3.4 KiB
C#
//
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// OpCode.cs
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//
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// Author:
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// Jb Evain (jbevain@gmail.com)
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//
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// (C) 2005 Jb Evain
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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namespace Mono.Cecil.Cil {
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internal struct OpCode {
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short m_value;
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byte m_code;
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byte m_flowControl;
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byte m_opCodeType;
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byte m_operandType;
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byte m_stackBehaviourPop;
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byte m_stackBehaviourPush;
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public string Name {
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get {
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int index = (Size == 1) ? Op2 : (Op2 + 256);
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return OpCodeNames.names [index];
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}
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}
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public int Size {
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get { return ((m_value & 0xff00) == 0xff00) ? 1 : 2; }
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}
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public byte Op1 {
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get { return (byte) (m_value >> 8); }
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}
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public byte Op2 {
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get { return (byte) m_value; }
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}
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public short Value {
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get { return (Size == 1) ? Op2 : m_value; }
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}
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public Code Code {
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get { return (Code) m_code; }
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}
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public FlowControl FlowControl {
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get { return (FlowControl) m_flowControl; }
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}
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public OpCodeType OpCodeType {
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get { return (OpCodeType) m_opCodeType; }
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}
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public OperandType OperandType {
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get { return (OperandType) m_operandType; }
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}
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public StackBehaviour StackBehaviourPop {
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get { return (StackBehaviour) m_stackBehaviourPop; }
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}
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public StackBehaviour StackBehaviourPush {
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get { return (StackBehaviour) m_stackBehaviourPush; }
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}
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internal OpCode (byte op1, byte op2,
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Code code, FlowControl flowControl,
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OpCodeType opCodeType, OperandType operandType,
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StackBehaviour pop, StackBehaviour push)
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{
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m_value = (short) ((op1 << 8) | op2);
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m_code = (byte) code;
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m_flowControl = (byte) flowControl;
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m_opCodeType = (byte) opCodeType;
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m_operandType = (byte) operandType;
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m_stackBehaviourPop = (byte) pop;
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m_stackBehaviourPush = (byte) push;
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if (op1 == 0xff)
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OpCodes.OneByteOpCode [op2] = this;
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else
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OpCodes.TwoBytesOpCode [op2] = this;
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}
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public override int GetHashCode ()
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{
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return m_value;
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}
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public override bool Equals (object obj)
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{
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if (!(obj is OpCode))
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return false;
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OpCode v = (OpCode) obj;
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return v.m_value == m_value;
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}
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public bool Equals (OpCode opcode)
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{
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return (m_value == opcode.m_value);
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}
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public static bool operator == (OpCode one, OpCode other)
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{
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return (one.m_value == other.m_value);
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}
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public static bool operator != (OpCode one, OpCode other)
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{
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return (one.m_value != other.m_value);
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}
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public override string ToString ()
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{
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return Name;
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}
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}
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}
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