Re: [sdcc-devel] Why does z80 place __nonbanked functions in _HOME?

[Maarten B. <sou...@ds...>]

Philipp Klaus Krause wrote on 2025-01-19 11:42:
> The z80 port puts __nonbanked functions into _HOME instead of _CODE.
> 
> Does anyone know why? Looking at svn blame, none of the SDCC devs that
> implemented this is still active.
> 
> Philipp

I assume that the idea is that any function that is explicitly 
__nonbanked
should be placed in a common bank that is always present. This is 
exactly
what _HOME is for IMHO. The _HOME segment should never be switched out 
of
focus.

Everything that is not explicitly __nonbanked should be placed in _CODE
under simple non-banking circumstances. But when bank switching is
automated (e.g. HUGE memory model) they should be placed in banks and
called through a trampoline. In an ideal situation the linker will 
choose
the bank and divide everything from _CODE over the available banks.

Note that this can also include library functions and even support
routines.

The fact that the linker currently cannot perform this task is no reason
IMHO to divert from this idea.

Maarten