Using dwarf_getfuncs to get function from object stored in memory

[Jeff Lin <jeffli@xilinx.com>]

Hi,

I’ve written code to extract function from a shared object with dwarf_begin api that finds the dwarf objects with the file descriptor using dwarf_getfuncs.
However, when I tried to parse the same object that is loaded into memory first, dwarf_getfuncs is not able to get the function.
In the case of accessing the object that is in memory, I used the following line to get the dwarf object:
  Elf *ehandle = elf_memory(const_cast<char *>(so_file), size);
  Dwarf *dw = dwarf_begin_elf(ehandle, DWARF_C_READ, NULL);

I am able to get the offset and tag with dwarf_nextcu, but errors out with dwarf_getfuncs.
Does anyone know why dwarf_getfuncs does return properly when trying to process dwarf object that was store in memory?

Thanks,
-Jeff
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