Package org.jf.dexlib2.dexbacked

Examples of org.jf.dexlib2.dexbacked.BaseDexBuffer

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        builder.addInstruction(new BuilderInstruction10t(Opcode.GOTO, firstGotoTarget));

        builder.addLineNumber(1);

        for (int i=0; i<250; i++) {
            builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
        }

        builder.addLabel("tryStart");

        builder.addLineNumber(2);

        for (int i=0; i<250; i++) {
            builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
        }

        builder.addLineNumber(3);

        Label secondGotoTarget = builder.getLabel("secondGotoTarget");
        builder.addInstruction(new BuilderInstruction10t(Opcode.GOTO, secondGotoTarget));


        builder.addLineNumber(4);
        builder.addLabel("handler");

        for (int i=0; i<500; i++) {
            builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
        }

        builder.addLineNumber(5);

        builder.addLabel("tryEnd");

        builder.addLabel("firstGotoTarget");
        builder.addLabel("secondGotoTarget");
        builder.addInstruction(new BuilderInstruction10x(Opcode.RETURN_VOID));

        Label tryStart = builder.getLabel("tryStart");
        Label tryEnd = builder.getLabel("tryEnd");
        Label handler = builder.getLabel("handler");
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        Label gotoTarget = builder.getLabel("gotoTarget");
        builder.addInstruction(new BuilderInstruction10t(Opcode.GOTO, gotoTarget));

        for (int i=0; i<500; i++) {
            builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
        }

        builder.addLabel("gotoTarget");
        builder.addInstruction(new BuilderInstruction10x(Opcode.RETURN_VOID));

        MethodImplementation impl = builder.getMethodImplementation();

        List<? extends Instruction> instructions = Lists.newArrayList(impl.getInstructions());
        Assert.assertEquals(502, instructions.size());
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        Label gotoTarget = builder.getLabel("gotoTarget");
        builder.addInstruction(new BuilderInstruction10t(Opcode.GOTO, gotoTarget));

        for (int i=0; i<70000; i++) {
            builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
        }

        builder.addLabel("gotoTarget");
        builder.addInstruction(new BuilderInstruction10x(Opcode.RETURN_VOID));

        MethodImplementation impl = builder.getMethodImplementation();

        List<? extends Instruction> instructions = Lists.newArrayList(impl.getInstructions());
        Assert.assertEquals(70002, instructions.size());
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        Label gotoTarget = builder.getLabel("gotoTarget");
        builder.addInstruction(new BuilderInstruction20t(Opcode.GOTO_16, gotoTarget));

        for (int i=0; i<70000; i++) {
            builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
        }

        builder.addLabel("gotoTarget");
        builder.addInstruction(new BuilderInstruction10x(Opcode.RETURN_VOID));

        MethodImplementation impl = builder.getMethodImplementation();

        List<? extends Instruction> instructions = Lists.newArrayList(impl.getInstructions());
        Assert.assertEquals(70002, instructions.size());
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        Label goto16Target = builder.getLabel("goto16Target");
        builder.addInstruction(new BuilderInstruction20t(Opcode.GOTO_16, goto16Target));

        for (int i=0; i<1000; i++) {
            builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
        }

        Label gotoTarget = builder.getLabel("gotoTarget");
        builder.addInstruction(new BuilderInstruction10t(Opcode.GOTO, gotoTarget));

        for (int i=0; i<499; i++) {
            builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
        }

        builder.addLabel("gotoTarget");

        for (int i=0; i<31265; i++) {
            builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
        }

        builder.addLabel("goto16Target");
        builder.addInstruction(new BuilderInstruction10x(Opcode.RETURN_VOID));

        MethodImplementation impl = builder.getMethodImplementation();

        List<? extends Instruction> instructions = Lists.newArrayList(impl.getInstructions());
        Assert.assertEquals(32767, instructions.size());
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    @Test
    public void testFixGoto16ToGoto32() {
        MethodImplementationBuilder builder = new MethodImplementationBuilder(1);

        Label gotoTarget = builder.getLabel("gotoTarget");
        builder.addInstruction(new BuilderInstruction20t(Opcode.GOTO_16, gotoTarget));

        for (int i=0; i<70000; i++) {
            builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
        }
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    @Test
    public void testFixGotoCascading() {
        MethodImplementationBuilder builder = new MethodImplementationBuilder(1);

        Label goto16Target = builder.getLabel("goto16Target");
        builder.addInstruction(new BuilderInstruction20t(Opcode.GOTO_16, goto16Target));

        for (int i=0; i<1000; i++) {
            builder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
        }
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            Instruction instruction = instructions.get(i);

            if (instruction.getOpcode() == Opcode.CONST_STRING) {
                if (stringSection.getItemIndex(
                        (StringRef)((ReferenceInstruction)instruction).getReference()) >= 65536) {
                    methodImplementation.replaceInstruction(i, new BuilderInstruction31c(Opcode.CONST_STRING_JUMBO,
                            ((OneRegisterInstruction)instruction).getRegisterA(),
                            ((ReferenceInstruction)instruction).getReference()));
                }
            }
        }
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        // verifies the magic value
        return getVersion(buf) != 0;
    }

    public static int getDexOffset(byte[] buf) {
        BaseDexBuffer bdb = new BaseDexBuffer(buf);
        return bdb.readSmallUint(DEX_OFFSET);
    }
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        BaseDexBuffer bdb = new BaseDexBuffer(buf);
        return bdb.readSmallUint(DEX_OFFSET);
    }

    public static int getDependenciesOffset(byte[] buf) {
        BaseDexBuffer bdb = new BaseDexBuffer(buf);
        return bdb.readSmallUint(DEPENDENCIES_OFFSET);
    }
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Related Classes of org.jf.dexlib2.dexbacked.BaseDexBuffer

  • ImplicitReferenceTest
  • org.jf.baksmali.Adaptors.ClassDefinition
  • org.jf.baksmali.Adaptors.Format.InstructionMethodItem
  • org.jf.baksmali.Adaptors.MethodDefinition
  • org.jf.baksmali.Adaptors.PreInstructionRegisterInfoMethodItem
  • org.jf.baksmali.AnalysisTest
  • org.jf.baksmali.baksmali
  • org.jf.baksmali.dump
  • org.jf.baksmali.ImplicitReferenceTest
  • org.jf.dexlib2.AccessorTest
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