x86: GOT is an ELF-only entity
Make md_undefined_symbol() conditional upon dealing with ELF, much like
other architectures (e.g. Arm32 and Arm64) have it. This avoids errors
in gas and even assertions in libbfd when "accidentally" e.g. a COFF-
targeting source file uses "_GLOBAL_OFFSET_TABLE_" for whatever reason.
While there also convert the final return statement to properly use
NULL.
NB: In principle 64-bit Mach-O knows GOT, too. Yet only an i?86-macho
assembler can be built right now, as per configure.tgt. Pretty clearly
adjustments to gotrel[] would also be necessary before these targets
could actually work reasonably cleanly.
2 files changed
