avoiding private headers -

[Brian Dodge]

Hello,

I am attempting to use elfutils / libdw to create a library for tagging 
function's local/automatic variable storage. I hope to use dwarf info to 
get the stack frame offsets, etc. for function's local vars.

I started with readelf.c as an example for iterating through CU/DIE.  
Since my code isn't "part of" elfutils I am not including private 
headers such as libdwP.h.  Because of that some of the code derived from 
readelf won't compile of course.

Are these structure accesses simply short-cuts and it is possible to get 
the info needed via API functions?  For things like "cu->version" it 
seems I can get that via the API dwarf_cu_info, but for some things I 
don't quite see what I'd need in the public headers. For example, in the 
(readelf.c) function get_indexed_addr, the line:

Elf_Data *debug_addr = cu->dbg->sectiondata[IDX_debug_addr];

uses the (private) structure Dwarf_CU to get at the (private) structure 
Dwarf, to get at the sectiondata.  I can get the Dwarf via 
dwarf_cu_getdwarf, but Is there another way to get at the section data 
(and IDX_debug_addr) ?

Thanks and apologies for my newbie-ness here.  Please let me know if 
there is a better email address to send this question to.

Brian




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