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+---- Thread: Routine mapping? (/showthread.php?tid=617)
Routine mapping? - einar - 2014-11-02
Right now, ZX BASIC already supports variable mapping. If I already have a variable defined at a certain memory address, I can reference it as follows:
Code:
DIM x AS UBYTE AT 64000It would be nice if ZX BASIC could also support routine mapping. If I already have an assembly routine implemented at a certain memory address, I would like to reference it as follows:
Code:
DECLARE sub FASTCALL doSomething(src as UINTEGER, dst as UINTEGER) AT 64000In the meantime, I'm having to use this workaround:
Code:
sub FASTCALL doSomething(src as UINTEGER, dst as UINTEGER)
asm
jp 64000
end asm
end subEDIT: Of course routine mapping should also work with both sub-routines and functions, either FASTCALL or not, exactly like any other ZX BASIC routine implemented in asm directly inside the routine body.
RE: Routine mapping? - einar - 2021-02-27
Bump!
Any chance this is going to be implemented?
RE: Routine mapping? - boriel - 2021-02-28
(2021-02-27, 03:55 AM)einar Wrote: Bump!
Any chance this is going to be implemented?
This is "on hold" (FUNC/SUB ... AT) because it's very platform dependent and I'm moving towards an arch-agnostic compiler.
Instead, in the future, a linker will do the final obj linking, and the developer could specify a memory-map of for functions and modules (that is, specifying where the code should be placed in memory).
Also remember you can call asm code directly with USR <address>.
For the moment your solution is the best I can think of...
I'm currently working hard in namespaces and modules to allow obj files and code relocation.