[Vm-beginners] Steps toward aarch64 Cog [FFI]

[Eliot Miranda]

Hi Ken,

    I have a suggestion.  Instead of initializing WordSize from Smalltalk
wordSize I would create two subclasses with a wordSize method, hardcoded as
^4 and ^8 respectively.  We want to be able to simulate any of the
processors on any platform, hence we can simulate x64 on the 32-bit version
and x86 on the 64-bit version as well as 32-bit processors on 32-bit
versions and 64-bit processors on 64-bit versions.  So structuring the ARM
FFI as an abstract subclass with a subclass responsibility for wordSize,
along with two subclasses for 64 & 32 bits will give us that flexibility.

Where a wordSize define would make sense would be
in platforms/Cross/plugins/IA32ABI/*ARM*, although you might want to review
the code first and see if #ifdef or splitting the files into 32 and 64-bit
versions is cleaner.


On Sun, Dec 23, 2018 at 8:06 AM <ken.dickey at whidbey.com> wrote:

> Rats!
>
> Can't even use this webmail thingie...
>
> [the _other_ changes file]
>
> Cheers,
> -KenD
>
>

-- 
_,,,^..^,,,_
best, Eliot
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