org.ow2.asmdex.util
Class RegisterShiftMethodAdapter

java.lang.Object
  extended by org.ow2.asmdex.MethodVisitor
      extended by org.ow2.asmdex.util.RegisterShiftMethodAdapter

public class RegisterShiftMethodAdapter
extends MethodVisitor

Method Adapter used to shift all the registers found in the bytecode.

Author:
Julien Névo

Field Summary
 
Fields inherited from class org.ow2.asmdex.MethodVisitor
api, mv
 
Constructor Summary
RegisterShiftMethodAdapter(int api, MethodVisitor mv, int nbRegistersToShift)
          Constructor
 
Method Summary
 void visitArrayLengthInsn(int destinationRegister, int arrayReferenceBearing)
          Visits an ARRAY-LENGTH instruction.
 void visitArrayOperationInsn(int opcode, int valueRegister, int arrayRegister, int indexRegister)
          Visits an instruction that performs an operation on an array.
 void visitFieldInsn(int opcode, java.lang.String owner, java.lang.String name, java.lang.String desc, int valueRegister, int objectRegister)
          Visits a field instruction.
 void visitFillArrayDataInsn(int arrayReference, java.lang.Object[] arrayData)
          Visits a Fill Array Data instruction.
 void visitIntInsn(int opcode, int register)
          Visits an instruction with a single register.
 void visitJumpInsn(int opcode, Label label, int registerA, int registerB)
          Visits a jump operation, conditional or not.
 void visitLocalVariable(java.lang.String name, java.lang.String desc, java.lang.String signature, Label start, Label end, int index)
          Visits a local variable declaration.
 void visitLocalVariable(java.lang.String name, java.lang.String desc, java.lang.String signature, Label start, java.util.List<Label> ends, java.util.List<Label> restarts, int index)
          Visits a local variable declaration.
 void visitLookupSwitchInsn(int register, Label dflt, int[] keys, Label[] labels)
          Visits a LOOKUPSWITCH instruction.
 void visitMaxs(int maxStack, int maxLocals)
          Visits the maximum stack size and the maximum number of local variables of the method.
 void visitMethodInsn(int opcode, java.lang.String owner, java.lang.String name, java.lang.String desc, int[] arguments)
          Visits a method instruction.
 void visitMultiANewArrayInsn(java.lang.String desc, int[] registers)
          Visits a MULTIANEWARRAY instruction.
 void visitOperationInsn(int opcode, int destinationRegister, int firstSourceRegister, int secondSourceRegister, int value)
          Visits an instruction that performs an unary or binary operation on one or two sources or one array, possibly a literal value, to a destination register.
 AnnotationVisitor visitParameterAnnotation(int parameter, java.lang.String desc, boolean visible)
          Visits an annotation of a parameter this method.
 void visitStringInsn(int opcode, int destinationRegister, java.lang.String string)
          Visits a string instruction.
 void visitTableSwitchInsn(int register, int min, int max, Label dflt, Label[] labels)
          Visits a TABLESWITCH instruction.
 void visitTypeInsn(int opcode, int destinationRegister, int referenceBearingRegister, int sizeRegister, java.lang.String type)
          Visits a type instruction.
 void visitVarInsn(int opcode, int destinationRegister, int var)
          Visits a local variable instruction.
 void visitVarInsn(int opcode, int destinationRegister, long var)
          Visits a local variable instruction, using a Long.
 
Methods inherited from class org.ow2.asmdex.MethodVisitor
visitAnnotation, visitAnnotationDefault, visitAttribute, visitCode, visitEnd, visitFrame, visitInsn, visitLabel, visitLineNumber, visitParameters, visitTryCatchBlock
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

RegisterShiftMethodAdapter

public RegisterShiftMethodAdapter(int api,
                                  MethodVisitor mv,
                                  int nbRegistersToShift)
Constructor

Parameters:
api - api level
mv - method adapter
nbRegistersToShift - offset of the shift.
Method Detail

visitMaxs

public void visitMaxs(int maxStack,
                      int maxLocals)
Description copied from class: MethodVisitor
Visits the maximum stack size and the maximum number of local variables of the method.

Overrides:
visitMaxs in class MethodVisitor
Parameters:
maxStack - maximum stack size of the method.
maxLocals - ignored in AsmDex. Maximum number of local variables for the method.

visitArrayLengthInsn

public void visitArrayLengthInsn(int destinationRegister,
                                 int arrayReferenceBearing)
Description copied from class: MethodVisitor
Visits an ARRAY-LENGTH instruction.

Overrides:
visitArrayLengthInsn in class MethodVisitor
Parameters:
destinationRegister - the destination register.
arrayReferenceBearing - register referencing the array.

visitFieldInsn

public void visitFieldInsn(int opcode,
                           java.lang.String owner,
                           java.lang.String name,
                           java.lang.String desc,
                           int valueRegister,
                           int objectRegister)
Description copied from class: MethodVisitor
Visits a field instruction. A field instruction is an instruction that loads or stores the value of a field of an object.

Overrides:
visitFieldInsn in class MethodVisitor
Parameters:
opcode - the opcode of the type instruction to be visited. This opcode is either IinstanceOP (IGETxx/IPUTxx) and SstaticOP (SGETXX/IPUTxx).
owner - the internal name of the field's owner class.
name - the field's name.
desc - the field's descriptor.
valueRegister - the value register.
objectRegister - the objectRegister. Ignored for static operations.

visitIntInsn

public void visitIntInsn(int opcode,
                         int register)
Description copied from class: MethodVisitor
Visits an instruction with a single register.

Overrides:
visitIntInsn in class MethodVisitor
Parameters:
opcode - the opcode of the instruction to be visited. This opcode is either RETURN, RETURN-WIDE, RETURN-OBJECT, MOVE-RESULT, MOVE-RESULT-WIDE, MOVE-RESULT-OBJECT, MOVE-EXCEPTION, THROW vAA.
register - the operand of the instruction to be visited.

visitJumpInsn

public void visitJumpInsn(int opcode,
                          Label label,
                          int registerA,
                          int registerB)
Description copied from class: MethodVisitor
Visits a jump operation, conditional or not. A jump instruction is an instruction that may jump to another instruction.

Overrides:
visitJumpInsn in class MethodVisitor
Parameters:
opcode - the opcode of the type instruction to be visited. This opcode is either GOTO, IF-EQ, IF-NE, IF-LT, IF-GE, IF-GT, IF-LE, or IF-EQZ, IF-NEZ, IF-LTZ, IF-GEZ, IF-GTZ, IF-LEZ.
label - the operand of the instruction to be visited. This operand is a label that designates the instruction to which the jump instruction may jump.
registerA - (4 bits). Ignored for unconditional jump.
registerB - (4 bits). Ignored for unconditional jump or zero tests (IF-EQZ, IF-NEZ...)

visitLocalVariable

public void visitLocalVariable(java.lang.String name,
                               java.lang.String desc,
                               java.lang.String signature,
                               Label start,
                               Label end,
                               int index)
Description copied from class: MethodVisitor
Visits a local variable declaration.

Overrides:
visitLocalVariable in class MethodVisitor
Parameters:
name - the name of a local variable.
desc - the type descriptor of this local variable.
signature - the type signature of this local variable. May be null if the local variable type does not use generic types.
start - the first instruction corresponding to the scope of this local variable (inclusive).
end - the last instruction corresponding to the scope of this local variable (exclusive). May be null if we don't know it.
index - the local variable's index.

visitLocalVariable

public void visitLocalVariable(java.lang.String name,
                               java.lang.String desc,
                               java.lang.String signature,
                               Label start,
                               java.util.List<Label> ends,
                               java.util.List<Label> restarts,
                               int index)
Description copied from class: MethodVisitor
Visits a local variable declaration.

Overrides:
visitLocalVariable in class MethodVisitor
Parameters:
name - the name of a local variable.
desc - the type descriptor of this local variable.
signature - the type signature of this local variable. May be null if the local variable type does not use generic types.
start - the first instruction corresponding to the scope of this local variable (inclusive).
ends - the last instruction corresponding to the scope of this local variable (exclusive). May be null if we don't know it. As Variables can be restarted, we may have several ends.
restarts - the instruction where the local variable is restarted. May be null if it never happens. Variables can be restarted as many times as needed, hence the array.
index - the local variable's index.

visitFillArrayDataInsn

public void visitFillArrayDataInsn(int arrayReference,
                                   java.lang.Object[] arrayData)
Description copied from class: MethodVisitor
Visits a Fill Array Data instruction. It is only used for primitive areas. Reference areas are filled programmatically.

Overrides:
visitFillArrayDataInsn in class MethodVisitor
Parameters:
arrayReference - array reference.
arrayData - array of the primitives to encode.

visitArrayOperationInsn

public void visitArrayOperationInsn(int opcode,
                                    int valueRegister,
                                    int arrayRegister,
                                    int indexRegister)
Description copied from class: MethodVisitor
Visits an instruction that performs an operation on an array.

Overrides:
visitArrayOperationInsn in class MethodVisitor
Parameters:
opcode - the opcode of the type instruction to be visited. This opcode is either AGET(-xxx) or APUT(-xxx).
valueRegister - the value register. May be source or destination register/pair.
arrayRegister - the array register.
indexRegister - the index register.

visitLookupSwitchInsn

public void visitLookupSwitchInsn(int register,
                                  Label dflt,
                                  int[] keys,
                                  Label[] labels)
Description copied from class: MethodVisitor
Visits a LOOKUPSWITCH instruction.

Overrides:
visitLookupSwitchInsn in class MethodVisitor
Parameters:
register - the register to test.
dflt - beginning of the default handler block (ignored by the Writer).
keys - the values of the keys.
labels - beginnings of the handler blocks. labels[i] is the beginning of the handler block for the keys[i] key.

visitTableSwitchInsn

public void visitTableSwitchInsn(int register,
                                 int min,
                                 int max,
                                 Label dflt,
                                 Label[] labels)
Description copied from class: MethodVisitor
Visits a TABLESWITCH instruction.

Overrides:
visitTableSwitchInsn in class MethodVisitor
Parameters:
register - the register to test.
min - the minimum key value.
max - the maximum key value (ignored by the Writer).
dflt - beginning of the default handler block (ignored by the Writer).
labels - beginnings of the handler blocks. labels[i] is the beginning of the handler block for the min + i key.

visitMultiANewArrayInsn

public void visitMultiANewArrayInsn(java.lang.String desc,
                                    int[] registers)
Description copied from class: MethodVisitor
Visits a MULTIANEWARRAY instruction.

Overrides:
visitMultiANewArrayInsn in class MethodVisitor
Parameters:
desc - an array type descriptor.
registers - array of registers containing the values of the array.

visitMethodInsn

public void visitMethodInsn(int opcode,
                            java.lang.String owner,
                            java.lang.String name,
                            java.lang.String desc,
                            int[] arguments)
Description copied from class: MethodVisitor
Visits a method instruction. A method instruction is an instruction that invokes a method.

Overrides:
visitMethodInsn in class MethodVisitor
Parameters:
opcode - the opcode of the type instruction to be visited. This opcode is either INVOKE-VIRTUAL, INVOKE-SUPER, INVOKE-DIRECT, INVOKE-STATIC or INVOKE-INTERFACE.
owner - the internal name of the method's owner class.
name - the method's name.
desc - the method's descriptor.
arguments - the arguments to give to the method.

visitOperationInsn

public void visitOperationInsn(int opcode,
                               int destinationRegister,
                               int firstSourceRegister,
                               int secondSourceRegister,
                               int value)
Description copied from class: MethodVisitor
Visits an instruction that performs an unary or binary operation on one or two sources or one array, possibly a literal value, to a destination register.

Overrides:
visitOperationInsn in class MethodVisitor
Parameters:
opcode - the opcode of the type instruction to be visited. This opcode is in either of these categories : UNOP, BINOP, BINOP/2ADDR, BINOP/LIT16, BINOP/LIT8.
destinationRegister - the destination register or pair. For BINOP/2ADDR, it should be the same as firstSourceRegister.
firstSourceRegister - the first source register or pair. For BINOP/2ADDR, it should be the same as destinationRegister.
secondSourceRegister - the second source register or pair. Ignored for UNOP, BINOP/LIT16, BINOP/LIT8.
value - literal value. Only useful for BINOP/LIT16, BINOP/LIT8.

visitParameterAnnotation

public AnnotationVisitor visitParameterAnnotation(int parameter,
                                                  java.lang.String desc,
                                                  boolean visible)
Description copied from class: MethodVisitor
Visits an annotation of a parameter this method.

Overrides:
visitParameterAnnotation in class MethodVisitor
Parameters:
parameter - the parameter index.
desc - the class descriptor of the annotation class.
visible - true if the annotation is visible at runtime.
Returns:
a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.

visitStringInsn

public void visitStringInsn(int opcode,
                            int destinationRegister,
                            java.lang.String string)
Description copied from class: MethodVisitor
Visits a string instruction. A string instruction is an instruction that takes the internal name of a string as parameter.

Overrides:
visitStringInsn in class MethodVisitor
Parameters:
opcode - the opcode of the type instruction to be visited. This opcode is either CONST-STRING or CONST-STRING/JUMBO.
destinationRegister - the destination register.
string - the string of the instruction to be visited.

visitTypeInsn

public void visitTypeInsn(int opcode,
                          int destinationRegister,
                          int referenceBearingRegister,
                          int sizeRegister,
                          java.lang.String type)
Description copied from class: MethodVisitor
Visits a type instruction. A type instruction is an instruction that takes the internal name of a class as parameter.

Overrides:
visitTypeInsn in class MethodVisitor
Parameters:
opcode - the opcode of the type instruction to be visited. This opcode is either CONST-CLASS, NEW-ARRAY, NEW-INSTANCE, CHECK-CAST or INSTANCE-OF.
destinationRegister - the destination register. Used only by CONST-CLASS, INSTANCE-OF, NEW-INSTANCE, NEW-ARRAY.
referenceBearingRegister - reference bearing register. Only used for CHECK-CAST, INSTANCE-OF instructions.
sizeRegister - size register. Used only for NEW-ARRAY.
type - the operand of the instruction to be visited. This operand must be the internal name of an object or array class.

visitVarInsn

public void visitVarInsn(int opcode,
                         int destinationRegister,
                         int var)
Description copied from class: MethodVisitor
Visits a local variable instruction. A local variable instruction is an instruction that loads or stores the value of a local variable.

Overrides:
visitVarInsn in class MethodVisitor
Parameters:
opcode - the opcode of the local variable instruction to be visited. This opcode is either MOVE, MOVE/FROM16, MOVE/16, MOVE-WIDE, MOVE-WIDE/FROM16, MOVE-WIDE/16, MOVE-OBJECT, MOVE-OBJECT/FROM16, MOVE-OBJECT/16, CONST/4, CONST/16, CONST, CONST/HIGH16, CONST-WIDE/16, CONST-WIDE/32.
destinationRegister - the destination register.
var - the operand of the instruction to be visited. This operand is either a value or a source Register.

visitVarInsn

public void visitVarInsn(int opcode,
                         int destinationRegister,
                         long var)
Description copied from class: MethodVisitor
Visits a local variable instruction, using a Long. A local variable instruction is an instruction that loads or stores the value of a local variable.

Overrides:
visitVarInsn in class MethodVisitor
Parameters:
opcode - the opcode of the local variable instruction to be visited. This opcode is either CONST-WIDE, CONST-WIDE/HIGH16.
destinationRegister - the destination register.
var - the operand of the instruction to be visited. This operand is either a value or a source Register.