Examples with SwitchElement org.jf.dexlib2.iface.instruction.SwitchElement used on opensource projects

Example 1 with SwitchElement

use of org.jf.dexlib2.iface.instruction.SwitchElement in project smali by JesusFreke.

the class SmalideaPackedSwitchPayload method getSwitchElements.

@Nonnull
@Override
public List<? extends SwitchElement> getSwitchElements() {
    final SmaliLiteral startKey = psiInstruction.getPackedSwitchStartKey();
    assert startKey != null;
    List<SmaliPackedSwitchElement> elements = psiInstruction.getPackedSwitchElements();
    SmaliMethod smaliMethod = psiInstruction.getParentMethod();
    SmaliInstruction packedSwitchInstruction = InstructionUtils.findFirstInstructionWithTarget(smaliMethod, Opcode.PACKED_SWITCH, psiInstruction.getOffset());
    final int baseOffset;
    if (packedSwitchInstruction == null) {
        baseOffset = 0;
    } else {
        baseOffset = packedSwitchInstruction.getOffset();
    }
    List<SwitchElement> newElements = Lists.newArrayList();
    // TODO: check for integer wraparound (how does art/dalvik handle that?)
    int initialKey = (int) startKey.getIntegralValue();
    for (int i = 0; i < elements.size(); i++) {
        final SmaliPackedSwitchElement element = elements.get(i);
        final int key = initialKey + i;
        newElements.add(new SwitchElement() {

            @Override
            public int getKey() {
                return key;
            }

            @Override
            public int getOffset() {
                SmaliLabelReference labelReference = element.getTarget();
                if (labelReference == null) {
                    return 0;
                }
                SmaliLabel label = labelReference.resolve();
                if (label == null) {
                    return 0;
                }
                return label.getOffset() - baseOffset;
            }
        });
    }
    return newElements;
}

Example 2 with SwitchElement

use of org.jf.dexlib2.iface.instruction.SwitchElement in project smali by JesusFreke.

the class SmalideaSparseSwitchPayload method getSwitchElements.

@Nonnull
@Override
public List<? extends SwitchElement> getSwitchElements() {
    List<SmaliSparseSwitchElement> elements = psiInstruction.getSparseSwitchElements();
    SmaliMethod smaliMethod = psiInstruction.getParentMethod();
    SmaliInstruction sparseSwitchInstruction = InstructionUtils.findFirstInstructionWithTarget(smaliMethod, Opcode.SPARSE_SWITCH, psiInstruction.getOffset());
    final int baseOffset;
    if (sparseSwitchInstruction == null) {
        baseOffset = 0;
    } else {
        baseOffset = sparseSwitchInstruction.getOffset();
    }
    return Lists.transform(elements, new Function<SmaliSparseSwitchElement, SwitchElement>() {

        @Override
        public SwitchElement apply(final SmaliSparseSwitchElement element) {
            return new SwitchElement() {

                @Override
                public int getKey() {
                    return (int) element.getKey().getIntegralValue();
                }

                @Override
                public int getOffset() {
                    SmaliLabelReference labelReference = element.getTarget();
                    if (labelReference == null) {
                        return 0;
                    }
                    SmaliLabel label = labelReference.resolve();
                    if (label == null) {
                        return 0;
                    }
                    return label.getOffset() - baseOffset;
                }
            };
        }
    });
}

Example 3 with SwitchElement

use of org.jf.dexlib2.iface.instruction.SwitchElement in project smali by JesusFreke.

the class SmalideaMethodTest method testSparseSwitch.

public void testSparseSwitch() {
    String text = ".class public LFormat31t;\n" + ".super Ljava/lang/Object;\n" + ".source \"Format31t.smali\"" + "\n" + ".method public test_sparse-switch()V\n" + "    .registers 1\n" + "    .annotation runtime Lorg/junit/Test;\n" + "    .end annotation\n" + "\n" + "    const v0, 13\n" + "\n" + ":switch\n" + "    sparse-switch v0, :SparseSwitch\n" + "\n" + ":Label10\n" + "    invoke-static {}, Lorg/junit/Assert;->fail()V\n" + "    return-void\n" + "\n" + ":Label20\n" + "    invoke-static {}, Lorg/junit/Assert;->fail()V\n" + "    return-void\n" + "\n" + ":Label15\n" + "    invoke-static {}, Lorg/junit/Assert;->fail()V\n" + "    return-void\n" + "\n" + ":Label13\n" + "    return-void\n" + "\n" + ":Label99\n" + "    invoke-static {}, Lorg/junit/Assert;->fail()V\n" + "    return-void\n" + "\n" + ":SparseSwitch\n" + "    .sparse-switch\n" + "        10 -> :Label10\n" + "        13 -> :Label13\n" + "        15 -> :Label15\n" + "        20 -> :Label20\n" + "        99 -> :Label99\n" + "    .end sparse-switch\n" + ".end method";
    SmaliFile file = (SmaliFile) myFixture.addFileToProject("my/pkg/blah.smali", text);
    SmaliClass smaliClass = file.getPsiClass();
    SmaliMethod smaliMethod = smaliClass.getMethods()[0];
    SmalideaMethod method = new SmalideaMethod(smaliMethod);
    MethodImplementation impl = method.getImplementation();
    Assert.assertNotNull(impl);
    List<Instruction> instructions = Lists.newArrayList(impl.getInstructions());
    SparseSwitchPayload sparseSwitchPayload = (SparseSwitchPayload) instructions.get(11);
    List<? extends SwitchElement> switchElements = sparseSwitchPayload.getSwitchElements();
    Assert.assertEquals(5, switchElements.size());
    checkSwitchElement(switchElements.get(0), 10, 6);
    checkSwitchElement(switchElements.get(1), 13, 30);
    checkSwitchElement(switchElements.get(2), 15, 22);
    checkSwitchElement(switchElements.get(3), 20, 14);
    checkSwitchElement(switchElements.get(4), 99, 32);
}

Example 4 with SwitchElement

use of org.jf.dexlib2.iface.instruction.SwitchElement in project smali by JesusFreke.

the class CodeItem method makeAnnotator.

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

        private SectionAnnotator debugInfoAnnotator = null;

        @Override
        public void annotateSection(@Nonnull AnnotatedBytes out) {
            debugInfoAnnotator = annotator.getAnnotator(ItemType.DEBUG_INFO_ITEM);
            super.annotateSection(out);
        }

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

        @Override
        public int getItemAlignment() {
            return 4;
        }

        @Override
        public void annotateItem(@Nonnull AnnotatedBytes out, int itemIndex, @Nullable String itemIdentity) {
            try {
                DexReader reader = dexFile.readerAt(out.getCursor());
                int registers = reader.readUshort();
                out.annotate(2, "registers_size = %d", registers);
                int inSize = reader.readUshort();
                out.annotate(2, "ins_size = %d", inSize);
                int outSize = reader.readUshort();
                out.annotate(2, "outs_size = %d", outSize);
                int triesCount = reader.readUshort();
                out.annotate(2, "tries_size = %d", triesCount);
                int debugInfoOffset = reader.readInt();
                out.annotate(4, "debug_info_off = 0x%x", debugInfoOffset);
                if (debugInfoOffset > 0) {
                    addDebugInfoIdentity(debugInfoOffset, itemIdentity);
                }
                int instructionSize = reader.readSmallUint();
                out.annotate(4, "insns_size = 0x%x", instructionSize);
                out.annotate(0, "instructions:");
                out.indent();
                out.setLimit(out.getCursor(), out.getCursor() + instructionSize * 2);
                int end = reader.getOffset() + instructionSize * 2;
                try {
                    while (reader.getOffset() < end) {
                        Instruction instruction = DexBackedInstruction.readFrom(reader);
                        // if we read past the end of the instruction list
                        if (reader.getOffset() > end) {
                            out.annotateTo(end, "truncated instruction");
                            reader.setOffset(end);
                        } else {
                            switch(instruction.getOpcode().format) {
                                case Format10x:
                                    annotateInstruction10x(out, instruction);
                                    break;
                                case Format35c:
                                    annotateInstruction35c(out, (Instruction35c) instruction);
                                    break;
                                case Format3rc:
                                    annotateInstruction3rc(out, (Instruction3rc) instruction);
                                    break;
                                case ArrayPayload:
                                    annotateArrayPayload(out, (ArrayPayload) instruction);
                                    break;
                                case PackedSwitchPayload:
                                    annotatePackedSwitchPayload(out, (PackedSwitchPayload) instruction);
                                    break;
                                case SparseSwitchPayload:
                                    annotateSparseSwitchPayload(out, (SparseSwitchPayload) instruction);
                                    break;
                                default:
                                    annotateDefaultInstruction(out, instruction);
                                    break;
                            }
                        }
                        assert reader.getOffset() == out.getCursor();
                    }
                } catch (ExceptionWithContext ex) {
                    ex.printStackTrace(System.err);
                    out.annotate(0, "annotation error: %s", ex.getMessage());
                    out.moveTo(end);
                    reader.setOffset(end);
                } finally {
                    out.clearLimit();
                    out.deindent();
                }
                if (triesCount > 0) {
                    if ((reader.getOffset() % 4) != 0) {
                        reader.readUshort();
                        out.annotate(2, "padding");
                    }
                    out.annotate(0, "try_items:");
                    out.indent();
                    try {
                        for (int i = 0; i < triesCount; i++) {
                            out.annotate(0, "try_item[%d]:", i);
                            out.indent();
                            try {
                                int startAddr = reader.readSmallUint();
                                out.annotate(4, "start_addr = 0x%x", startAddr);
                                int instructionCount = reader.readUshort();
                                out.annotate(2, "insn_count = 0x%x", instructionCount);
                                int handlerOffset = reader.readUshort();
                                out.annotate(2, "handler_off = 0x%x", handlerOffset);
                            } finally {
                                out.deindent();
                            }
                        }
                    } finally {
                        out.deindent();
                    }
                    int handlerListCount = reader.readSmallUleb128();
                    out.annotate(0, "encoded_catch_handler_list:");
                    out.annotateTo(reader.getOffset(), "size = %d", handlerListCount);
                    out.indent();
                    try {
                        for (int i = 0; i < handlerListCount; i++) {
                            out.annotate(0, "encoded_catch_handler[%d]", i);
                            out.indent();
                            try {
                                int handlerCount = reader.readSleb128();
                                out.annotateTo(reader.getOffset(), "size = %d", handlerCount);
                                boolean hasCatchAll = handlerCount <= 0;
                                handlerCount = Math.abs(handlerCount);
                                if (handlerCount != 0) {
                                    out.annotate(0, "handlers:");
                                    out.indent();
                                    try {
                                        for (int j = 0; j < handlerCount; j++) {
                                            out.annotate(0, "encoded_type_addr_pair[%d]", i);
                                            out.indent();
                                            try {
                                                int typeIndex = reader.readSmallUleb128();
                                                out.annotateTo(reader.getOffset(), TypeIdItem.getReferenceAnnotation(dexFile, typeIndex));
                                                int handlerAddress = reader.readSmallUleb128();
                                                out.annotateTo(reader.getOffset(), "addr = 0x%x", handlerAddress);
                                            } finally {
                                                out.deindent();
                                            }
                                        }
                                    } finally {
                                        out.deindent();
                                    }
                                }
                                if (hasCatchAll) {
                                    int catchAllAddress = reader.readSmallUleb128();
                                    out.annotateTo(reader.getOffset(), "catch_all_addr = 0x%x", catchAllAddress);
                                }
                            } finally {
                                out.deindent();
                            }
                        }
                    } finally {
                        out.deindent();
                    }
                }
            } catch (ExceptionWithContext ex) {
                out.annotate(0, "annotation error: %s", ex.getMessage());
            }
        }

        private String formatRegister(int registerNum) {
            return String.format("v%d", registerNum);
        }

        private void annotateInstruction10x(@Nonnull AnnotatedBytes out, @Nonnull Instruction instruction) {
            out.annotate(2, instruction.getOpcode().name);
        }

        private void annotateInstruction35c(@Nonnull AnnotatedBytes out, @Nonnull Instruction35c instruction) {
            List<String> args = Lists.newArrayList();
            int registerCount = instruction.getRegisterCount();
            if (registerCount == 1) {
                args.add(formatRegister(instruction.getRegisterC()));
            } else if (registerCount == 2) {
                args.add(formatRegister(instruction.getRegisterC()));
                args.add(formatRegister(instruction.getRegisterD()));
            } else if (registerCount == 3) {
                args.add(formatRegister(instruction.getRegisterC()));
                args.add(formatRegister(instruction.getRegisterD()));
                args.add(formatRegister(instruction.getRegisterE()));
            } else if (registerCount == 4) {
                args.add(formatRegister(instruction.getRegisterC()));
                args.add(formatRegister(instruction.getRegisterD()));
                args.add(formatRegister(instruction.getRegisterE()));
                args.add(formatRegister(instruction.getRegisterF()));
            } else if (registerCount == 5) {
                args.add(formatRegister(instruction.getRegisterC()));
                args.add(formatRegister(instruction.getRegisterD()));
                args.add(formatRegister(instruction.getRegisterE()));
                args.add(formatRegister(instruction.getRegisterF()));
                args.add(formatRegister(instruction.getRegisterG()));
            }
            String reference = ReferenceUtil.getReferenceString(instruction.getReference());
            out.annotate(6, String.format("%s {%s}, %s", instruction.getOpcode().name, Joiner.on(", ").join(args), reference));
        }

        private void annotateInstruction3rc(@Nonnull AnnotatedBytes out, @Nonnull Instruction3rc instruction) {
            int startRegister = instruction.getStartRegister();
            int endRegister = startRegister + instruction.getRegisterCount() - 1;
            String reference = ReferenceUtil.getReferenceString(instruction.getReference());
            out.annotate(6, String.format("%s {%s .. %s}, %s", instruction.getOpcode().name, formatRegister(startRegister), formatRegister(endRegister), reference));
        }

        private void annotateDefaultInstruction(@Nonnull AnnotatedBytes out, @Nonnull Instruction instruction) {
            List<String> args = Lists.newArrayList();
            if (instruction instanceof OneRegisterInstruction) {
                args.add(formatRegister(((OneRegisterInstruction) instruction).getRegisterA()));
                if (instruction instanceof TwoRegisterInstruction) {
                    args.add(formatRegister(((TwoRegisterInstruction) instruction).getRegisterB()));
                    if (instruction instanceof ThreeRegisterInstruction) {
                        args.add(formatRegister(((ThreeRegisterInstruction) instruction).getRegisterC()));
                    }
                }
            } else if (instruction instanceof VerificationErrorInstruction) {
                String verificationError = VerificationError.getVerificationErrorName(((VerificationErrorInstruction) instruction).getVerificationError());
                if (verificationError != null) {
                    args.add(verificationError);
                } else {
                    args.add("invalid verification error type");
                }
            }
            if (instruction instanceof ReferenceInstruction) {
                args.add(ReferenceUtil.getReferenceString(((ReferenceInstruction) instruction).getReference()));
            } else if (instruction instanceof OffsetInstruction) {
                int offset = ((OffsetInstruction) instruction).getCodeOffset();
                String sign = offset >= 0 ? "+" : "-";
                args.add(String.format("%s0x%x", sign, Math.abs(offset)));
            } else if (instruction instanceof NarrowLiteralInstruction) {
                int value = ((NarrowLiteralInstruction) instruction).getNarrowLiteral();
                if (NumberUtils.isLikelyFloat(value)) {
                    args.add(String.format("%d # %f", value, Float.intBitsToFloat(value)));
                } else {
                    args.add(String.format("%d", value));
                }
            } else if (instruction instanceof WideLiteralInstruction) {
                long value = ((WideLiteralInstruction) instruction).getWideLiteral();
                if (NumberUtils.isLikelyDouble(value)) {
                    args.add(String.format("%d # %f", value, Double.longBitsToDouble(value)));
                } else {
                    args.add(String.format("%d", value));
                }
            } else if (instruction instanceof FieldOffsetInstruction) {
                int fieldOffset = ((FieldOffsetInstruction) instruction).getFieldOffset();
                args.add(String.format("field@0x%x", fieldOffset));
            } else if (instruction instanceof VtableIndexInstruction) {
                int vtableIndex = ((VtableIndexInstruction) instruction).getVtableIndex();
                args.add(String.format("vtable@%d", vtableIndex));
            } else if (instruction instanceof InlineIndexInstruction) {
                int inlineIndex = ((InlineIndexInstruction) instruction).getInlineIndex();
                args.add(String.format("inline@%d", inlineIndex));
            }
            out.annotate(instruction.getCodeUnits() * 2, "%s %s", instruction.getOpcode().name, Joiner.on(", ").join(args));
        }

        private void annotateArrayPayload(@Nonnull AnnotatedBytes out, @Nonnull ArrayPayload instruction) {
            List<Number> elements = instruction.getArrayElements();
            int elementWidth = instruction.getElementWidth();
            out.annotate(2, instruction.getOpcode().name);
            out.indent();
            out.annotate(2, "element_width = %d", elementWidth);
            out.annotate(4, "size = %d", elements.size());
            out.annotate(0, "elements:");
            out.indent();
            for (int i = 0; i < elements.size(); i++) {
                if (elementWidth == 8) {
                    long value = elements.get(i).longValue();
                    if (NumberUtils.isLikelyDouble(value)) {
                        out.annotate(elementWidth, "element[%d] = %d # %f", i, value, Double.longBitsToDouble(value));
                    } else {
                        out.annotate(elementWidth, "element[%d] = %d", i, value);
                    }
                } else {
                    int value = elements.get(i).intValue();
                    if (NumberUtils.isLikelyFloat(value)) {
                        out.annotate(elementWidth, "element[%d] = %d # %f", i, value, Float.intBitsToFloat(value));
                    } else {
                        out.annotate(elementWidth, "element[%d] = %d", i, value);
                    }
                }
            }
            if (out.getCursor() % 2 != 0) {
                out.annotate(1, "padding");
            }
            out.deindent();
            out.deindent();
        }

        private void annotatePackedSwitchPayload(@Nonnull AnnotatedBytes out, @Nonnull PackedSwitchPayload instruction) {
            List<? extends SwitchElement> elements = instruction.getSwitchElements();
            out.annotate(2, instruction.getOpcode().name);
            out.indent();
            out.annotate(2, "size = %d", elements.size());
            if (elements.size() == 0) {
                out.annotate(4, "first_key");
            } else {
                out.annotate(4, "first_key = %d", elements.get(0).getKey());
                out.annotate(0, "targets:");
                out.indent();
                for (int i = 0; i < elements.size(); i++) {
                    out.annotate(4, "target[%d] = %d", i, elements.get(i).getOffset());
                }
                out.deindent();
            }
            out.deindent();
        }

        private void annotateSparseSwitchPayload(@Nonnull AnnotatedBytes out, @Nonnull SparseSwitchPayload instruction) {
            List<? extends SwitchElement> elements = instruction.getSwitchElements();
            out.annotate(2, instruction.getOpcode().name);
            out.indent();
            out.annotate(2, "size = %d", elements.size());
            if (elements.size() > 0) {
                out.annotate(0, "keys:");
                out.indent();
                for (int i = 0; i < elements.size(); i++) {
                    out.annotate(4, "key[%d] = %d", i, elements.get(i).getKey());
                }
                out.deindent();
                out.annotate(0, "targets:");
                out.indent();
                for (int i = 0; i < elements.size(); i++) {
                    out.annotate(4, "target[%d] = %d", i, elements.get(i).getOffset());
                }
                out.deindent();
            }
            out.deindent();
        }

        private void addDebugInfoIdentity(int debugInfoOffset, String methodString) {
            if (debugInfoAnnotator != null) {
                debugInfoAnnotator.setItemIdentity(debugInfoOffset, methodString);
            }
        }
    };
}

Example 5 with SwitchElement

use of org.jf.dexlib2.iface.instruction.SwitchElement in project smali by JesusFreke.

the class MutableMethodImplementation method newBuilderSparseSwitchPayload.

@Nonnull
private BuilderSparseSwitchPayload newBuilderSparseSwitchPayload(@Nonnull MethodLocation location, @Nonnull int[] codeAddressToIndex, @Nonnull SparseSwitchPayload instruction) {
    List<? extends SwitchElement> switchElements = instruction.getSwitchElements();
    if (switchElements.size() == 0) {
        return new BuilderSparseSwitchPayload(null);
    }
    MethodLocation switchLocation = findSwitchForPayload(location);
    int baseAddress;
    if (switchLocation == null) {
        baseAddress = 0;
    } else {
        baseAddress = switchLocation.codeAddress;
    }
    List<SwitchLabelElement> labelElements = Lists.newArrayList();
    for (SwitchElement element : switchElements) {
        labelElements.add(new SwitchLabelElement(element.getKey(), newLabel(codeAddressToIndex, element.getOffset() + baseAddress)));
    }
    return new BuilderSparseSwitchPayload(labelElements);
}