About small methods , can not dump the instanceMethod name and types .

[MrLeeSr]

After merge this change , i can get the class but i can not dump the small method name and types .

debug info : in CDObjectiveC2Processor.m , when i try to get a class instance method ,
objc2Method.name = [cursor readPtr:small];
objc2Method.types = [cursor readPtr:small];
objc2Method.imp = [cursor readPtr:small];
NSString *name = [self.machOFile stringAtAddress:objc2Method.name];
NSString *types = [self.machOFile stringAtAddress:objc2Method.types];
i got a nil value . All the instance method is this . It look like the offset or mask did not right .

[neuralmer]

Are you seeing this issue with a standard framework/library? If so which one? Or, are you otherwise able to provide a reproduction?

[MrLeeSr]

Thanks for reply , i got this problem which in a new project demo created in Xcode12 . I put it in this respository . When you try to get the instance method of 'ViewController' or 'LBObj' , you will get this issue . or you can create a new on use Xcode12 and get a Test.

[neuralmer]

I meant to say here that I don't presently have time to take a look at this. I will as time permits.

[neuralmer]

I am able to reproduce the issue.

[neuralmer]

It looks like there is a layer of indirection that is not being interpreted correctly. The pointers are being interpreted as pointing into __PAGE_ZERO. It looks like the method name pointers should be pointing into __DATA/__objc_selrefs, possibly being offset by 0x100000000, and the data at that location is the address of the name. Similarly for the types, but I don't know which segment/section they are pointing to right now. I don't have time to continue working on this, unfortunately.