Hands-On System Programming with C++

ELF sections

To see a list of all of the sections, use the following command:

> readelf -SW a.out

This will result in the following output:

As shown, even in a simple example, there are several sections. Some of these sections contain information that has already been talked about in previous chapters:

• eh_frame/.eh_frame_hdr: These contain the FDE information for reversing the stack when dealing with exceptions, as just discussed. The eh_frame_hdr section contains additional information for improving the performance of C++ exceptions, including a hash table that can be used to locate an FDE instead of looping through the list of FDEs (which ...