Re: (Assemblly language) newbie wants to ****t Atari 68k to 'C'

Robert Spykerman <robert.spykerman@[EMAIL PROTECTED]
> writes:

> On May 10, 7:25 am, Sherman Pendley <spamt...@[EMAIL PROTECTED]
> wrote:
>> Robert Spykerman <robert.spyker...@[EMAIL PROTECTED]
> writes:
>> > The one thing you
>> > probably won't find a lot on is how to write and link asm code on OS
X
>> > to c libs
>>
>> If you want to see what the ABI looks like in asm, you could have a
look
>> at the source for libffi, which is included with the gcc source. That's
>> its job - you create a set of structures that describe a function's
args
>> and return value, and pass them along with a pointer to the function
>> itself to a function in libffi. That function sets up the required
stack
>> frame and makes the function call.
>
> This, I didn't know. Thank you very very much :)
>
> Not having RTFM'ed just quite yet I'm assuming libffi is a DLL loaded
> and present eh? Do you have any links to examples on how to link
> assembly to DLL's ?

In my project, I build and link to a static .a library. DLL's aren't used
on Macs - if you're talking about dynamic libraries, they've got .dylib
extensions. Sometimes .so. But never .dll - too many horrible memories for
some of us. :-)

Anyhow, to load them, you'll probably want to call dyld:

   
<http://developer.apple.com/do***entation/DeveloperTools/Reference/MachOReference/Reference/reference.html>
    <http://preview.tinyurl.com/3tk758>

In general, I think you'll find this an interesting read too:

   
<http://developer.apple.com/do***entation/DeveloperTools/Conceptual/MachOTopics/introduction.html>
    <http://preview.tinyurl.com/3qvmh5>

> I have to admit I don't really like writing GUIs but I was thinking of
> writing stuff that will call GTK - that way I (hopefully) will only
> need to write most of the code once somewhere ie linux and might have
> a fairly decent chance of ****ting to OSX  and perhaps even windoze.

Honestly, I think Gtk apps are best written in C. When in Rome...

sherm--

-- 
My blog: http://shermspace.blogspot.com
Cocoa programming in Perl: http://camelbones.sourceforge.net