gnupic: Re: [gnupic] GCC port of PIC
Subject:
Re: [gnupic] GCC port of PIC
From:
"Colm O' Flaherty" ####@####.####
Date:
16 Mar 2006 08:42:17 +0000
Message-Id: <BAY112-F358DEE277B01281ADFAFAB4E70@phx.gbl>
Indeed. I take your point. I'd certainly be interested in finding out some
more about it though. It can only help my PIC programming skills.. (glass
half full, glass half full, glass half full, glass half full.. :) )
>From: "Scott Dattalo" ####@####.####
>Reply-To: ####@####.####
>To: ####@####.####
>Subject: Re: [gnupic] GCC port of PIC
>Date: Wed, 15 Mar 2006 09:57:06 -0800 (PST)
>
>On Wed, 2006-03-15 at 17:31 +0000, Colm O' Flaherty wrote:
>
> > Does anyone have any experience developing a port for gcc?
>
>I have a little experience with gcc porting. I also have experience with
>SDCC.
>
> > If we got something basic up and running, and then put it on
>sourceforge, I
> > guess we'd find out fairly quickly where the issues were, and what
>support
> > people wanted, as people started to use it.
>
>Don't underestimate the amount of effort!
>
>There are two references for a gcc PIC port: the AVR port and the dsPic
>port. Both of these are significantly different. Specifically, the 14bit
>PICs only have primitive support for indirect addressing and no hardware
>support for a data stack. I think you'll find that while gcc makes very
>few assumptions about processors, it does assume these two features are
>present! Now it's possible to contrive RTL to coax gcc into believing
>these exist, but man it's messy!
>
>Scott
>
>
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