Re: [cc65] Splitting crt0.s files in two?

On Donnerstag 05 November 2009, Fatih Aygün wrote:
> Hi,
>
> Currently the start-up file for the Atari platform fulfills (at least) two
> separate functions. My knowledge on the other platforms is limited but a
> quick look at the sources gives me the same impression for them too.
>
> The first function is to create the header and footer for the binary format
> of the platform. The second one is to initialize the C run-time. I think
> splitting those two functions in two separate files might bring some
> advantages.
>
> The first scenario is: I want to write a non-C assembly program. I end up
> writing an EXE header and footer, which I basically copy from crt0.s. If
> the header/footer were in a separate file, I would just link that and
> forget about it.
>
> The second scenario is: I want to write a C program but I want to use
> another binary format. Like a bootable disk image, a cartridge image or
> whatever. I write a custom linker config, I copy the start-up file, I
> change it so that it creates the header/footer for my binary format. If the
> C run-time initialization code were in a separate file I would just write
> the config and binary header, and link to the library as usual. Moreover,
> it could be possible to supply some alternative config files and
> header/footer files with the cc65 package for some often used binary
> formats.
>
> I'm sure similar scenarios are applicable for at least some of the other
> platforms.
>
> Any thoughts?

seperating the actual crt0 from the binary header like this is a very good 
idea, imho.

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