soot.dexpler.instructions.FilledNewArrayInstruction Maven / Gradle / Ivy
package soot.dexpler.instructions;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 2012 Michael Markert, Frank Hartmann
*
* (c) 2012 University of Luxembourg - Interdisciplinary Centre for
* Security Reliability and Trust (SnT) - All rights reserved
* Alexandre Bartel
*
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1 of the
* License, or (at your option) any later version.
*
* This program 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 Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import static soot.dexpler.Util.isFloatLike;
import org.jf.dexlib2.iface.instruction.Instruction;
import org.jf.dexlib2.iface.instruction.formats.Instruction35c;
import org.jf.dexlib2.iface.reference.TypeReference;
import soot.ArrayType;
import soot.Local;
import soot.Type;
import soot.dexpler.DexBody;
import soot.dexpler.DexType;
import soot.dexpler.IDalvikTyper;
import soot.dexpler.typing.DalvikTyper;
import soot.jimple.ArrayRef;
import soot.jimple.AssignStmt;
import soot.jimple.IntConstant;
import soot.jimple.Jimple;
import soot.jimple.NewArrayExpr;
public class FilledNewArrayInstruction extends FilledArrayInstruction {
public FilledNewArrayInstruction(Instruction instruction, int codeAdress) {
super(instruction, codeAdress);
}
@Override
public void jimplify(DexBody body) {
if (!(instruction instanceof Instruction35c)) {
throw new IllegalArgumentException("Expected Instruction35c but got: " + instruction.getClass());
}
Instruction35c filledNewArrayInstr = (Instruction35c) instruction;
int[] regs = { filledNewArrayInstr.getRegisterC(), filledNewArrayInstr.getRegisterD(),
filledNewArrayInstr.getRegisterE(), filledNewArrayInstr.getRegisterF(), filledNewArrayInstr.getRegisterG(), };
// NopStmt nopStmtBeginning = Jimple.v().newNopStmt();
// body.add(nopStmtBeginning);
int usedRegister = filledNewArrayInstr.getRegisterCount();
Type t = DexType.toSoot((TypeReference) filledNewArrayInstr.getReference());
// NewArrayExpr needs the ElementType as it increases the array dimension by 1
Type arrayType = ((ArrayType) t).getElementType();
NewArrayExpr arrayExpr = Jimple.v().newNewArrayExpr(arrayType, IntConstant.v(usedRegister));
// new local generated intentional, will be moved to real register by MoveResult
Local arrayLocal = body.getStoreResultLocal();
AssignStmt assign = Jimple.v().newAssignStmt(arrayLocal, arrayExpr);
body.add(assign);
for (int i = 0; i < usedRegister; i++) {
ArrayRef arrayRef = Jimple.v().newArrayRef(arrayLocal, IntConstant.v(i));
AssignStmt assign2 = Jimple.v().newAssignStmt(arrayRef, body.getRegisterLocal(regs[i]));
addTags(assign2);
body.add(assign2);
}
// NopStmt nopStmtEnd = Jimple.v().newNopStmt();
// body.add(nopStmtEnd);
// defineBlock(nopStmtBeginning, nopStmtEnd);
setUnit(assign);
// body.setDanglingInstruction(this);
if (IDalvikTyper.ENABLE_DVKTYPER) {
// Debug.printDbg(IDalvikTyper.DEBUG, "constraint: "+ assign);
DalvikTyper.v().setType(assign.getLeftOpBox(), arrayExpr.getType(), false);
// DalvikTyper.v().setType(array, arrayType, isUse)
// DalvikTyper.v().addConstraint(assign.getLeftOpBox(), assign.getRightOpBox());
}
}
@Override
boolean isUsedAsFloatingPoint(DexBody body, int register) {
Instruction35c i = (Instruction35c) instruction;
Type arrayType = DexType.toSoot((TypeReference) i.getReference());
return isRegisterUsed(register) && isFloatLike(arrayType);
}
/**
* Check if register is referenced by this instruction.
*
*/
private boolean isRegisterUsed(int register) {
Instruction35c i = (Instruction35c) instruction;
return register == i.getRegisterD() || register == i.getRegisterE() || register == i.getRegisterF()
|| register == i.getRegisterG() || register == i.getRegisterC();
}
}