org.ow2.asmdex.instruction
Class InstructionFormat51L

java.lang.Object
  extended by org.ow2.asmdex.instruction.Instruction
      extended by org.ow2.asmdex.instruction.InstructionFormat51L
All Implemented Interfaces:
ILongLiteralInstruction, IOneRegisterInstruction

public class InstructionFormat51L
extends Instruction
implements IOneRegisterInstruction, ILongLiteralInstruction

Encodes and decodes an instruction built with the Dalvik format 51L.

Author:
Julien Névo

Field Summary
 
Fields inherited from class org.ow2.asmdex.instruction.Instruction
lineNumber, opcodeByte, opcodeHighOrderByte
 
Constructor Summary
InstructionFormat51L(int opcode, int destinationRegister, long var)
          Constructor of the Instruction by providing all the elements it's composed of.
 
Method Summary
 long getLiteral()
          The value of the litteral
static long getLiteralB(IDalvikValueReader reader)
          Returns the LiteralB encoded where the Reader points.
 int getRegisterA()
          The index of the register (called A value in Dalvik documentation)
static int getRegisterA(int opcode)
          Returns the RegisterA encoded in the given 16-bit opcode.
 int getSize()
          Returns the size of the instruction in bytes.
static void skip(IDalvikValueReader reader)
          Skips the data of this Instruction.
 void write(ByteVector out, ConstantPool constantPool)
          Encodes the instruction, in the Dalvik format, to an output buffer.
 
Methods inherited from class org.ow2.asmdex.instruction.Instruction
getInstructionSizeInByte, getLineNumber, getOpcodeByte, getOpcodeHighOrderByte, setLineNumber, test4BitsLimit, test4BitsLimit
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

InstructionFormat51L

public InstructionFormat51L(int opcode,
                            int destinationRegister,
                            long var)
Constructor of the Instruction by providing all the elements it's composed of.

Parameters:
opcode - 8 or 16 bits opcode.
destinationRegister - the destination register.
var - the literal to store.
Method Detail

getRegisterA

public int getRegisterA()
Description copied from interface: IOneRegisterInstruction
The index of the register (called A value in Dalvik documentation)

Specified by:
getRegisterA in interface IOneRegisterInstruction
Returns:
regoster A index

getLiteral

public long getLiteral()
Description copied from interface: ILongLiteralInstruction
The value of the litteral

Specified by:
getLiteral in interface ILongLiteralInstruction
Returns:
as a long (2 words)

getRegisterA

public static int getRegisterA(int opcode)
Returns the RegisterA encoded in the given 16-bit opcode.

Returns:
the RegisterA .

getLiteralB

public static long getLiteralB(IDalvikValueReader reader)
Returns the LiteralB encoded where the Reader points. It must be performed only once after having read the opcode.

Parameters:
reader - reader pointing after the 16-bit opcode.
Returns:
the LiteralB.

skip

public static void skip(IDalvikValueReader reader)
Skips the data of this Instruction.

Parameters:
reader - reader on the Instruction to parse, pointing after the 16-bit opcode.

getSize

public int getSize()
Description copied from class: Instruction
Returns the size of the instruction in bytes.

Specified by:
getSize in class Instruction
Returns:
the size of the instruction in bytes.

write

public void write(ByteVector out,
                  ConstantPool constantPool)
Description copied from class: Instruction
Encodes the instruction, in the Dalvik format, to an output buffer.

Specified by:
write in class Instruction
Parameters:
out - output buffer.
constantPool - the constantPool.