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Re: [Chicken-users] Re: Other Cheney-MTA systems?


From: Alex Queiroz
Subject: Re: [Chicken-users] Re: Other Cheney-MTA systems?
Date: Sun, 14 Nov 2010 20:17:30 -0200

Hallo,

On Sat, Nov 13, 2010 at 7:56 PM, John Tobey <address@hidden> wrote:
>
> Yes, the various calling conventions for x86 (cdecl, stdcall,
> fastcall, etc.) all require called functions to preserve the frame
> pointer and a few other registers.  What the function does with these
> registers while it executes does not matter to the calling convention,
> though a frequent use is to help debuggers.  (There are other ways now
> of providing the same information to GDB.)  What concerns the calling
> convention is that the registers hold the same value on return as on
> entry.
>

     Beginning with GCC 4.6 the new default behaviour is omitting the
frame pointer.

http://gcc.gnu.org/gcc-4.6/changes.html

-- 
-alex
http://www.artisancoder.com/



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