Re: [avr-gcc-list] Missing debug info in extcoff for AVRStudio

[Ned Konz]

On Apr 6, 2006, at 1:05 AM, Juergen Suetterlin wrote:

> I'm developing with the GNU and AVRStudio (JTAGICE). When I compile my
> project with the provided makfile template, create the ext coff  
> file and
> load it into AVRStudio460 the GUI does not show the PC inicator  
> (yellow
> arrow) where it should be but some lines above
> E.g. I have a code that looks like this:
> 01:void subfunc(void)
> 02:{
> 03:   ..do something..
> 04:}
> 05:
> 06:void main(void)
> 07:{
> 08: subfunc();
> 09:}
> After loading it into AVRStudio the yellow arrow points to line 04!  
> but not
> line 06 or 07.
> I took a look into .lss and .map files as well as into the disassembly
> window of AVRStudio and it seems that there were no "debug entries"
> generated to the function "init code" of main. The only entries are  
> for line
> 04 (return) and line 08 (subfunc call).
> This problem occurs not only for the main function but also for all
> functions. You can imagine that stepping through such a mess is no  
> fun.
> Maybe I make a mistake with the compiler options. Does anybody have a
> solution for this problem?

It's not a problem, it's a feature. The compiler has optimized the  
function.

If you change the optimization to -O0 (instead of -O2 or -Os or -O3)  
you will see things stepping through in the order you wrote them.

--
Ned Konz
address@hidden