Thanks Michael for the response. Actually, I have only this much information.
I need to get information related to For global variables , I read the address "55b51afea000" from > /proc/<pid>/maps file. I use DW_OP_addr parameter to retrieve the address. 55b51afea000 + DW_OP_addr gives me the address of global variables. For function, I read the address "55b51afea000" from > /proc/<pid>/maps file.. I use DW_AT_low_pc parameter to retrieve the function starting address Now, I need to read the local variables address. As I am not executing the process, I cannot use registers. I need to use DW_OP_call_frame_cfa. I am not able to understand how to retrieve addresses using DW_OP_call_frame_cfa. Any pointer or suggestion are most welcome. Best Regards, Archana On Tue, Mar 9, 2021 at 11:07 PM Michael Eager <ea...@eagercon.com> wrote: > It's difficult to offer advice with such a spare description. > > You might read the executable and relocate the .debug_info and > other debug sections using the process map. If you have the > process image, this probably would not be necessary. > > On 3/8/21 1:49 AM, Archana Deshmukh via Dwarf-Discuss wrote: > > Hello, > > > > I have a pinatrace.out and process map of a file. > > With this input, I need to build a symbol table. > > > > Best Regards, > > Archana Deshmukh > > > > On Sun, Mar 7, 2021 at 10:29 AM Archana Deshmukh > > <desharchan...@gmail.com <mailto:desharchan...@gmail.com>> wrote: > > > > > > > > ---------- Forwarded message --------- > > From: *Michael Eager* <ea...@eagercon.com <mailto:ea...@eagercon.com > >> > > Date: Sat, Mar 6, 2021 at 10:53 PM > > Subject: Re: [Dwarf-Discuss] Retrieving variables, function address > > using dwarf > > To: Archana Deshmukh <desharchan...@gmail.com > > <mailto:desharchan...@gmail.com>>, <dwarf-discuss@lists.dwarfstd.org > > <mailto:dwarf-discuss@lists.dwarfstd.org>> > > > > > > On 3/5/21 8:28 PM, Archana Deshmukh via Dwarf-Discuss wrote: > > > I need to read the address of local variable, global variable, > > function > > > name and function arguments from the process. > > > > > > For global variables , I read the address "55b51afea000" from > > > /proc/<pid>/maps file. I use DW_OP_addr parameter to retrieve the > > address. > > > 55b51afea000 + DW_OP_addr gives me the address of global variable. > > > > > > I need to read the stack segment, heap. Is there any way to read > > > segments? DW_AT_segment parameter seems to be for 16 bit. > > > > > > I need to read the following process map using dwarf. > > > > > > Any suggestion, pointers are welcome. > > > > > > 55b51afea000-55b51afeb000 r-xp 00000000 fd:00 5902563 > > > > Can you explain what you are trying to do? > > > > Usually a DWARF consumer (a debugger) does not need to read the > > process memory map. All of the information you mention is in > > the DWARF data. You may need to relocate addresses in the DWARF > > debug data. > > > > DWARF does not contain information about the process memory > > layout, such as the location of the heap or the start of the > > stack. > > > > -- > > Michael Eager > > > > > > _______________________________________________ > > Dwarf-Discuss mailing list > > Dwarf-Discuss@lists.dwarfstd.org > > http://lists.dwarfstd.org/listinfo.cgi/dwarf-discuss-dwarfstd.org > > > > -- > Michael Eager >
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