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RE: [avr-gcc-list] Calling C functions from assembly


From: Schwichtenberg, Knut
Subject: RE: [avr-gcc-list] Calling C functions from assembly
Date: Tue, 17 Oct 2006 08:48:29 +0200

Simon,

the easiest way to find out how gcc would call a function, is to write a
small C-programm calling the function and let it compile only to
assembler by a "make testprog.s", while testprog.c is the source. There
you will find all details without additonal reading. You should set the
optimization to -O0 otherwise you will see what gcc does with unused
code.

Cheers 

Knut 

> -----Original Message-----
> From: 
> address@hidden
> g 
> [mailto:address@hidden
> ongnu.org] On Behalf Of Simon Han
> Sent: Monday, October 16, 2006 7:56 PM
> To: address@hidden
> Subject: [avr-gcc-list] Calling C functions from assembly
> 
> Hi all,
>       
>       This must be the most stupid question of the year.  :P
> 
>       Is there a way to call C functions from assembly?  Can 
> someone point  
> me an example of this?
> 
> Thank you very much,
> Simon
> 
> 
> 
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