backtrace() vs. _Unwind_Backtrace()

Fri Dec 5 19:36:00 GMT 2003

David Mosberger wrote:
>>>>>>On 2003年12月05日 09:13:41 -0800, David Daney <ddaney@avtrex.com> said:
>>>>>>>>>>>>>> David.D> The approach for the MIPS port of libgcj is to include a
> David.D> backtrace() replacement that calls _Unwind_Backtrace().
> David.D> This works because backtrace() is a weak symbol in glibc.
> David.D> It sounds like this is essentially what you are suggesting.
>> David.D> As I said in the previous message this code is in
> David.D> sysdep/dwarf2-backtrace.cc.
>>That sounds fine to me, except could you do s/dwarf2/unwind/ or
>something like that? The _Unwind_* interface is not at all tied to
>DWARF2 (in fact, it was invented for a non-DWARF2-unwind-info
>platform, which is a bit ironic... ;-).
>>	--david
>>I would be happy to change the name of "sysdep/dwarf2-backtrace.cc" 
to "sysdep/unwind-backtrace.cc".
However I don't want to do it if you guys want to go with some other 
solution. If you think the approach of using the code currently in 
sysdep/dwarf2-backtrace.cc as a starting point it a good one, I will 
make the change. If not, do what ever you want, and I will try adapt 
the MIPS port as needed.
David Daney.