n two
     relative addresses in the same section or two absolute addresses
     (after above conversions) is also a number when 'LD_FEATURE
     ("SANE_EXPR")' or inside an output section definition but an
     absolute address otherwise.
   * The result of other operations on relative addresses or one
     relative address and a number, is a relative address in the same
     section as the relative operand(s).
   * The result of other operations on absolute addresses (after above
     conversions) is an absolute address.

   You can use the builtin function 'ABSOLUTE' to force an expression to
be absolute when it would otherwise be relative.  For example, to create
an absolute symbol set to the address of the end of the output section
'.data':
     SECTIONS
       {
         .data : { *(.data) _edata = ABSOLUTE(.); }
       }
If 'ABSOLUTE' were not used, '_edata' would be relative to the '.data'
section.

   Using 'LOADADDR' also forces an expression absolute, since this
particular builtin function returns an absolute address.