PHDR_ADD_NULL Directive
The PHDR_ADD_NULL directive causes the link-editor to add a
specified number of additional program header entries of type
PT_NULL at the end of the program header array. Extra
PT_NULL entries can be used by post processing
utilities.
PHDR_ADD_NULL = value;
value must be a positive integer value, and gives the
number of extra PT_NULL entries to create. All fields of the
resulting program header entries will be set to 0.