Examples with Opcode org.jf.dexlib2.Opcode used on opensource projects

Example 6 with Opcode

use of org.jf.dexlib2.Opcode in project smali by JesusFreke.

the class PayloadAlignmentTest method testPackedSwitchAlignment.

@Test
public void testPackedSwitchAlignment() {
    MethodImplementationBuilder implBuilder = new MethodImplementationBuilder(10);
    implBuilder.addLabel("switch_target_1");
    implBuilder.addInstruction(new BuilderInstruction10t(Opcode.GOTO, implBuilder.getLabel("goto_target")));
    implBuilder.addLabel("switch_payload");
    implBuilder.addInstruction(new BuilderPackedSwitchPayload(0, Lists.newArrayList(implBuilder.getLabel("switch_target_1"), implBuilder.getLabel("switch_target_2"), implBuilder.getLabel("switch_target_3"))));
    implBuilder.addLabel("goto_target");
    implBuilder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
    implBuilder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
    implBuilder.addLabel("switch_target_2");
    implBuilder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
    implBuilder.addLabel("switch_target_3");
    implBuilder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
    implBuilder.addInstruction(new BuilderInstruction31t(Opcode.PACKED_SWITCH, 0, implBuilder.getLabel("switch_payload")));
    List<Instruction> instructions = Lists.newArrayList(implBuilder.getMethodImplementation().getInstructions());
    checkInstructions(instructions, new Opcode[] { Opcode.GOTO, Opcode.NOP, Opcode.PACKED_SWITCH_PAYLOAD, Opcode.NOP, Opcode.NOP, Opcode.NOP, Opcode.NOP, Opcode.PACKED_SWITCH });
    OffsetInstruction gotoInstruction = (OffsetInstruction) instructions.get(0);
    Assert.assertEquals(12, gotoInstruction.getCodeOffset());
    PackedSwitchPayload payload = (PackedSwitchPayload) instructions.get(2);
    Assert.assertEquals(3, payload.getSwitchElements().size());
    Assert.assertEquals(-16, payload.getSwitchElements().get(0).getOffset());
    Assert.assertEquals(-2, payload.getSwitchElements().get(1).getOffset());
    Assert.assertEquals(-1, payload.getSwitchElements().get(2).getOffset());
    OffsetInstruction referent = (OffsetInstruction) instructions.get(7);
    Assert.assertEquals(-14, referent.getCodeOffset());
}

Example 7 with Opcode

use of org.jf.dexlib2.Opcode in project smali by JesusFreke.

the class PayloadAlignmentTest method testSparseSwitchAlignment.

@Test
public void testSparseSwitchAlignment() {
    MethodImplementationBuilder implBuilder = new MethodImplementationBuilder(10);
    implBuilder.addLabel("switch_target_1");
    implBuilder.addInstruction(new BuilderInstruction10t(Opcode.GOTO, implBuilder.getLabel("goto_target")));
    implBuilder.addLabel("switch_payload");
    implBuilder.addInstruction(new BuilderSparseSwitchPayload(Lists.newArrayList(new SwitchLabelElement(0, implBuilder.getLabel("switch_target_1")), new SwitchLabelElement(5, implBuilder.getLabel("switch_target_2")), new SwitchLabelElement(10, implBuilder.getLabel("switch_target_3")))));
    implBuilder.addLabel("goto_target");
    implBuilder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
    implBuilder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
    implBuilder.addLabel("switch_target_2");
    implBuilder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
    implBuilder.addLabel("switch_target_3");
    implBuilder.addInstruction(new BuilderInstruction10x(Opcode.NOP));
    implBuilder.addInstruction(new BuilderInstruction31t(Opcode.SPARSE_SWITCH, 0, implBuilder.getLabel("switch_payload")));
    List<Instruction> instructions = Lists.newArrayList(implBuilder.getMethodImplementation().getInstructions());
    checkInstructions(instructions, new Opcode[] { Opcode.GOTO, Opcode.NOP, Opcode.SPARSE_SWITCH_PAYLOAD, Opcode.NOP, Opcode.NOP, Opcode.NOP, Opcode.NOP, Opcode.SPARSE_SWITCH });
    OffsetInstruction gotoInstruction = (OffsetInstruction) instructions.get(0);
    Assert.assertEquals(16, gotoInstruction.getCodeOffset());
    SparseSwitchPayload payload = (SparseSwitchPayload) instructions.get(2);
    Assert.assertEquals(3, payload.getSwitchElements().size());
    Assert.assertEquals(-20, payload.getSwitchElements().get(0).getOffset());
    Assert.assertEquals(-2, payload.getSwitchElements().get(1).getOffset());
    Assert.assertEquals(-1, payload.getSwitchElements().get(2).getOffset());
    OffsetInstruction referent = (OffsetInstruction) instructions.get(7);
    Assert.assertEquals(-18, referent.getCodeOffset());
}

Example 8 with Opcode

use of org.jf.dexlib2.Opcode in project smali by JesusFreke.

the class DebugInfoItem method makeAnnotator.

@Nonnull
public static SectionAnnotator makeAnnotator(@Nonnull DexAnnotator annotator, @Nonnull MapItem mapItem) {
    return new SectionAnnotator(annotator, mapItem) {

        @Nonnull
        @Override
        public String getItemName() {
            return "debug_info_item";
        }

        @Override
        public void annotateItem(@Nonnull AnnotatedBytes out, int itemIndex, @Nullable String itemIdentity) {
            DexReader reader = dexFile.readerAt(out.getCursor());
            int lineStart = reader.readSmallUleb128();
            out.annotateTo(reader.getOffset(), "line_start = %d", lineStart);
            int parametersSize = reader.readSmallUleb128();
            out.annotateTo(reader.getOffset(), "parameters_size = %d", parametersSize);
            if (parametersSize > 0) {
                out.annotate(0, "parameters:");
                out.indent();
                for (int i = 0; i < parametersSize; i++) {
                    int paramaterIndex = reader.readSmallUleb128() - 1;
                    out.annotateTo(reader.getOffset(), "%s", StringIdItem.getOptionalReferenceAnnotation(dexFile, paramaterIndex, true));
                }
                out.deindent();
            }
            out.annotate(0, "debug opcodes:");
            out.indent();
            int codeAddress = 0;
            int lineNumber = lineStart;
            loop: while (true) {
                int opcode = reader.readUbyte();
                switch(opcode) {
                    case DebugItemType.END_SEQUENCE:
                        {
                            out.annotateTo(reader.getOffset(), "DBG_END_SEQUENCE");
                            break loop;
                        }
                    case DebugItemType.ADVANCE_PC:
                        {
                            out.annotateTo(reader.getOffset(), "DBG_ADVANCE_PC");
                            out.indent();
                            int addressDiff = reader.readSmallUleb128();
                            codeAddress += addressDiff;
                            out.annotateTo(reader.getOffset(), "addr_diff = +0x%x: 0x%x", addressDiff, codeAddress);
                            out.deindent();
                            break;
                        }
                    case DebugItemType.ADVANCE_LINE:
                        {
                            out.annotateTo(reader.getOffset(), "DBG_ADVANCE_LINE");
                            out.indent();
                            int lineDiff = reader.readSleb128();
                            lineNumber += lineDiff;
                            out.annotateTo(reader.getOffset(), "line_diff = +%d: %d", Math.abs(lineDiff), lineNumber);
                            out.deindent();
                            break;
                        }
                    case DebugItemType.START_LOCAL:
                        {
                            out.annotateTo(reader.getOffset(), "DBG_START_LOCAL");
                            out.indent();
                            int registerNum = reader.readSmallUleb128();
                            out.annotateTo(reader.getOffset(), "register_num = v%d", registerNum);
                            int nameIndex = reader.readSmallUleb128() - 1;
                            out.annotateTo(reader.getOffset(), "name_idx = %s", StringIdItem.getOptionalReferenceAnnotation(dexFile, nameIndex, true));
                            int typeIndex = reader.readSmallUleb128() - 1;
                            out.annotateTo(reader.getOffset(), "type_idx = %s", TypeIdItem.getOptionalReferenceAnnotation(dexFile, typeIndex));
                            out.deindent();
                            break;
                        }
                    case DebugItemType.START_LOCAL_EXTENDED:
                        {
                            out.annotateTo(reader.getOffset(), "DBG_START_LOCAL_EXTENDED");
                            out.indent();
                            int registerNum = reader.readSmallUleb128();
                            out.annotateTo(reader.getOffset(), "register_num = v%d", registerNum);
                            int nameIndex = reader.readSmallUleb128() - 1;
                            out.annotateTo(reader.getOffset(), "name_idx = %s", StringIdItem.getOptionalReferenceAnnotation(dexFile, nameIndex, true));
                            int typeIndex = reader.readSmallUleb128() - 1;
                            out.annotateTo(reader.getOffset(), "type_idx = %s", TypeIdItem.getOptionalReferenceAnnotation(dexFile, typeIndex));
                            int sigIndex = reader.readSmallUleb128() - 1;
                            out.annotateTo(reader.getOffset(), "sig_idx = %s", StringIdItem.getOptionalReferenceAnnotation(dexFile, sigIndex, true));
                            out.deindent();
                            break;
                        }
                    case DebugItemType.END_LOCAL:
                        {
                            out.annotateTo(reader.getOffset(), "DBG_END_LOCAL");
                            out.indent();
                            int registerNum = reader.readSmallUleb128();
                            out.annotateTo(reader.getOffset(), "register_num = v%d", registerNum);
                            out.deindent();
                            break;
                        }
                    case DebugItemType.RESTART_LOCAL:
                        {
                            out.annotateTo(reader.getOffset(), "DBG_RESTART_LOCAL");
                            out.indent();
                            int registerNum = reader.readSmallUleb128();
                            out.annotateTo(reader.getOffset(), "register_num = v%d", registerNum);
                            out.deindent();
                            break;
                        }
                    case DebugItemType.PROLOGUE_END:
                        {
                            out.annotateTo(reader.getOffset(), "DBG_SET_PROLOGUE_END");
                            break;
                        }
                    case DebugItemType.EPILOGUE_BEGIN:
                        {
                            out.annotateTo(reader.getOffset(), "DBG_SET_EPILOGUE_BEGIN");
                            break;
                        }
                    case DebugItemType.SET_SOURCE_FILE:
                        {
                            out.annotateTo(reader.getOffset(), "DBG_SET_FILE");
                            out.indent();
                            int nameIdx = reader.readSmallUleb128() - 1;
                            out.annotateTo(reader.getOffset(), "name_idx = %s", StringIdItem.getOptionalReferenceAnnotation(dexFile, nameIdx));
                            out.deindent();
                            break;
                        }
                    default:
                        int adjusted = opcode - 0x0A;
                        int addressDiff = adjusted / 15;
                        int lineDiff = (adjusted % 15) - 4;
                        codeAddress += addressDiff;
                        lineNumber += lineDiff;
                        out.annotateTo(reader.getOffset(), "address_diff = +0x%x:0x%x, line_diff = +%d:%d, ", addressDiff, codeAddress, lineDiff, lineNumber);
                        break;
                }
            }
            out.deindent();
        }
    };
}

Example 9 with Opcode

use of org.jf.dexlib2.Opcode in project smali by JesusFreke.

the class MethodDefinition method addInstructionMethodItems.

private void addInstructionMethodItems(List<MethodItem> methodItems) {
    int currentCodeAddress = 0;
    for (int i = 0; i < effectiveInstructions.size(); i++) {
        Instruction instruction = effectiveInstructions.get(i);
        MethodItem methodItem = InstructionMethodItemFactory.makeInstructionFormatMethodItem(this, currentCodeAddress, instruction);
        methodItems.add(methodItem);
        if (i != effectiveInstructions.size() - 1) {
            methodItems.add(new BlankMethodItem(currentCodeAddress));
        }
        if (classDef.options.codeOffsets) {
            methodItems.add(new MethodItem(currentCodeAddress) {

                @Override
                public double getSortOrder() {
                    return -1000;
                }

                @Override
                public boolean writeTo(IndentingWriter writer) throws IOException {
                    writer.write("#@");
                    writer.printUnsignedLongAsHex(codeAddress & 0xFFFFFFFFL);
                    return true;
                }
            });
        }
        if (classDef.options.accessorComments && classDef.options.syntheticAccessorResolver != null && (instruction instanceof ReferenceInstruction)) {
            Opcode opcode = instruction.getOpcode();
            if (opcode.referenceType == ReferenceType.METHOD) {
                MethodReference methodReference = null;
                try {
                    methodReference = (MethodReference) ((ReferenceInstruction) instruction).getReference();
                } catch (InvalidItemIndex ex) {
                // just ignore it for now. We'll deal with it later, when processing the instructions
                // themselves
                }
                if (methodReference != null && SyntheticAccessorResolver.looksLikeSyntheticAccessor(methodReference.getName())) {
                    AccessedMember accessedMember = classDef.options.syntheticAccessorResolver.getAccessedMember(methodReference);
                    if (accessedMember != null) {
                        methodItems.add(new SyntheticAccessCommentMethodItem(accessedMember, currentCodeAddress));
                    }
                }
            }
        }
        currentCodeAddress += instruction.getCodeUnits();
    }
}

Example 10 with Opcode

use of org.jf.dexlib2.Opcode in project smali by JesusFreke.

the class MethodDefinition method findPayloadOffset.

public int findPayloadOffset(int targetOffset, Opcode type) {
    int targetIndex;
    try {
        targetIndex = instructionOffsetMap.getInstructionIndexAtCodeOffset(targetOffset);
    } catch (InvalidInstructionOffset ex) {
        throw new InvalidSwitchPayload(targetOffset);
    }
    //TODO: does dalvik let you pad with multiple nops?
    //TODO: does dalvik let a switch instruction point to a non-payload instruction?
    Instruction instruction = instructions.get(targetIndex);
    if (instruction.getOpcode() != type) {
        // maybe it's pointing to a NOP padding instruction. Look at the next instruction
        if (instruction.getOpcode() == Opcode.NOP) {
            targetIndex += 1;
            if (targetIndex < instructions.size()) {
                instruction = instructions.get(targetIndex);
                if (instruction.getOpcode() == type) {
                    return instructionOffsetMap.getInstructionCodeOffset(targetIndex);
                }
            }
        }
        throw new InvalidSwitchPayload(targetOffset);
    } else {
        return targetOffset;
    }
}