On Mon, Jan 7, 2013 at 1:13 PM, Shahid Alam <alam_shahid@xxxxxxxxx> wrote: > As part of my research I am updating the .gcc_exception_table of a binary 64 > bit elf file. For small C++ programs that throw exceptions it works OK, but > for large benchmark programs it's not working. My question is does GCC > stores more than one table inside the .gcc_exception_table section of the > elf file. If it does what's the exact format of these tables. I have some > knowledge of the action table, action records and types table. I am not > clear about the size of the types table. > > I am parsing the tables in this section but is not able to know the exact > size and format of the types tables, where a pointer to the exception > information is stored. I need to update this pointer to the new updated > location. I documented the .gcc_except_table section at http://www.airs.com/blog/archives/464 . Yes, there is normally more than one table (one LSDA) in the .gcc_except_table section. There is normally one LSDA per function that needs to handle exceptions. Each such function will have a pointer to the LSDA in its FDE entry in the .eh_frame section, as described at http://www.airs.com/blog/archives/460 . Ian
