Re: [sdcc-devel] Pic12 backend

[Chris <scx...@ya...>]

Pic12 is not difficult, reentrant, recursive function calls , longjmp , varargs and  floating point simply don't work. Further function arguments are limited.
Regression test need special pic variant with more ram in order to fulfill basic testing.
Pic13 need reentrance for interrupts, saving used args to dedicated ram locations. Further static or global write variable bigger as byte is problematic as operations are not atomic inside reentrant functions. 

Il 21 febbraio 2017 09:40:22 CET, Philipp Klaus Krause <pk...@sp...> ha scritto:
>Am 21.02.2017 um 09:22 schrieb Chris:
>> Is there interest in pic12/13 bit backend ?
>
>If someone writes it and maintains it, that's fine.
>I added quite a few backends to SDCC myself, but do not know how much
>effort a pic12/pic13 backend would be.
>
>Currently the pic14 and pic16 backend are considered "in development",
>not stable. Many regression tests that pass for the other backends
>still
>fail for pic14 and pic16.
>
>Philipp
>
>
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