[avr-libc-dev] DWARF support in 4.0 [was: Re: [task #3693] Add new devices: mega640-1280-1281-2560-2561]

[E. Weddington]

Darcy Watkins wrote:

> Hi,
>
> Have any of you checked into the following avr-gcc bug?
>
> [Bug target/19087] Overflowed address in dwarf debug line information
>
>  http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19087
>
> I believe that this affects efforts to support debugging of devices having
> more than 64k bytes of flash (including existing ATmega128).
>
> As it stands, I was able to rebuild avr-gcc to generate 32 bit debug
> information and Torlief sent me AVR studio parser DLLs to accept the 32 bit
> information.  The problem I currently encounter is that all the data
> addresses are offset by 800000 (for SRAM) and 810000 (for EEPROM).
Also, more importantly is bug #19885:
<http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19885>
Which says that DWARF2 support for the AVR is broken on 4.0/4.1.

This bug affects GCC bugs #17993, #17994, and #19087 for the AVR target. 
I've just updated the bug reports to show the dependencies.

Eric

PS. Technically a new thread should have been started for this topic. 
I've changed the subject line to be more descriptive.