[PATCH 0/5] Add support for R_386_GOT32X/R_X86_64_[REX_]GOTPCRELX

[Rafael Espíndola]

> Since for some binop, linker needs to rewrite the REX byte, it needs
> to know if instruction has a REX byte.  R_X86_64_GOTPCREL doesn't
> have such information

The byte stream before the R_X86_64_GOTPCREL location does. Checking
for the REX prefix is not that different from checking if the
instruction in a mov when converting mov to lea.

Cheers,
Rafael