Re: symbol size as function size

[Nick Clifton <nickc at redhat dot com>]

Hi Paulo,

> .equ __size_of_sum, .-sum
>
> __size_of_sum would then be used as a symbol containing the size in
> words of sum.
>
> The problem with the current setup is that as sets the value of
> __size_of_sum and when it is relaxed at link time, the size tends to
> decrease so the final value of __size_of_sum is wrong.

You do not say for which target(s) you are having this problem.

Alan has already mentioned one way of solving the problem.  Here is 
another - the cause is probably that the assembler is computing the 
value of ". - sum" rather than leaving it to the linker.  In order to 
prevent this you need to define md_allow_local_subtract and have it 
decide when it is necessary to postpone the calculation until link time.

Cheers
  Nick