Re:Dissecting objc_msgSend on ARM64
by chrisseaton on Saturday July 01, 2017 @07:36PM
(#14679748)
I think the point was that you cannot implement this particular function in C - a function that forwards arguments to other functions, given a particular standard ABI. You've changed the requirements by saying that now the other functions use a different ABI, so you've missed the point of why it's impossible to implement this function, in these circumstances, in C.
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Re:Dissecting objc_msgSend on ARM64
by tom_mellior on Sunday July 02, 2017 @04:55AM
(#14681589)
The original question in this thread was whether it was really impossible, under any circumstances, to write this in C, as part of an Objective-C implementation that you fully control. It is possible in C, if you can control the ABI. It's the people who insist on a particular pre-existing ABI who are changing the question.
Anyway, I think I've said all I'm going to say here.