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The current implementation only supported 6 of the possible kind values for a MethodHandle object. However, as the link below shows there are in fact 9. All 9 can be seen in the MethodHandleType class which is used by dexdump to translate the kind value of a MethodHandle object to a string representation. https://android.googlesource.com/platform/art/+/android-8.1.0_r41/runtime/dex_file.h Moreover, this in fact lines up with the 9 different kinds for a MethodHandle object in standard java bytecode (though the values are swapped around for some reason). https://docs.oracle.com/javase/8/docs/api/java/lang/invoke/MethodHandleInfo.html These changes add in the additional 3 kind values and make sure all nesscary hooks using the kind values of MethodHandle reference them. For testing purposes, I found the easiest way to get correctly formatted invoke-custom and invoke-polymorphic instructions was to use the already generated dex files used to test dexdump. They can be found at the link below (invoke-custom.dex and invoke-polymorphic.dex). https://android.googlesource.com/platform/art/+/android-8.1.0_r41/test/dexdump/