How to add type information for const and const-wide instructions

[Xiangyang Guo]

Hi,

I notice that apktool's smali code doesn't contain the type information about the const and const-wide information. Then it's not that clear what type of variables are transmitted to this register. Can anyone guide me how to add the type information for const and const-wide instructions? For example, "const/4 v0, 0x0" can be changed to "const/4 v0, 0x0 #int"?

Thanks in advance. 

Xiangyang

[Ryszard Wiśniewski]

Hi, there is no type information at the bytecode level. Technically null, false, 0, etc. is the same value - zero value. Thus single register defined as e.g. "const v0, 0x12345678" can be used in several places as different types.

 

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