Re: [Sdcc-user] How to deal bytewise with 24-bit symbols in asxxxx?

[Erik P. <epe...@iv...>]

On Thu, 29 Mar 2018, Philipp Klaus Krause wrote:

>>> Full support for function pointers would need:
>>> 1) A way to get individual bytes of 24-bit symbols
>>> 2) A way to get the upper 16 bits of 24-bit symbols
>>>
>>> Philipp
>>
>> If that is true, then the ds390 target is totally broken and the huge
>> model for mcs51 is broken as well. I'm sure this used to work.
>>
>> ISTR that the assembler has support for every odd kind of number of bits
>> per address word, including 24 bit. Is the address size maybe set up
>> incorrectly?
>>
>> Maarten
>
> I had also tested with ds390, and it seemed to work there. Maybe there
> is some functionality in the ds390 assembler that would have to be
> ported to the stm8 one.
>
> Philipp

I have enabled the assembler to emit 24-bit addresses in the relocation 
records for stm8 like it does for ds390 and mcs51 (even though mcs51 is 
only using 16-bit addresses). So this should allow you to reference the 
individual bytes of the 24-bit address. However, I think additional work 
will still be needed to reference the upper 16 bits of a 24-bit address.

   Erik