[Bug target/17994] avr-gcc does not output a dwarf2 .debug_frame section

["bjoern dot m dot haase at web dot de" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From bjoern dot m dot haase at web dot de  2005-05-06 13:59 -------
Hi, 
 
I have been reviewing PR19885 and come to the following conclusions: 
 
1.) As expected, Torleif is right: I can confirm that the problem exists,  
2.) it should, however, probably be called rather a request for enhancement 
than a bug: Beside call stack information the debugging info should be ok in 
principle. 
3.) There seems to be only one little part missing in order to add the call 
stack information as well: The back-end needs to provide the information at 
which memory address the debugger could localize the return address. This would 
require to implement the target hook INCOMING_RETURN_ADDR_RTX and use the 
RTX_FRAME_RELATED_P predicate for all of the prologue/epilogue insn. 
 
I think the best way to address this issue would be to resolve this issue 
simultaneously when switching from asm-prologue/epilogue to 
RTL-prologue/epilogue. Since Andy Hutchinson is just working on this issue, we 
might soon have a solution. Hopefully :-). Would be very helpfull to have call 
stack info in avrstudio. 
 
Yours, 
 
Bjoern 
 
P.S.:  
I hope you will not be flaming me for adding you on the CC list. :-) Just 
thought that you might be interrested since I know you are working on the 
prologue/epilogue issue. 

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                 CC|                            |hutchinsonandy at netscape
                   |                            |dot net


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17994