Implementing dwarf procedures

["Thomson, Patrick S" <patrick.s.thomson@intel.com>]

Howdy Folks,

I'm part of a compiler project that wants to emit 
dwarf procedures and one of the requirements is that 
the output has to be debuggable with gdb.

I thought I read somewhere in the mailing list that 
DW_OP_call4 was currently being worked on, but I can't 
seem to find it again. Is anyone currently working on, 
or is it planned for 6.x to, support dwarf procedures? 

I'm already tasked with doing this, so if there is 
existing work, I'd like to be compatible or contribute. 
If not, implement it such that it can be made part of 
the source tree.

Thanks!
Pat Thomson