x86/COFF: support RVA (image-relative) relocations in insn operands
As was pointed out in [1] compilers produce code using such constructs,
and hence we'd better support this. In analogy to the .rva directive
permit @rva to be used for this, and in analogy with other architectures
(plus to not diverge from e.g. Clang's integrated assembler, albeit I
haven't been able myself to confirm it knows this form) also permit
@imgrel.
While there also adjust the operand type specifier for the adjacent
@secrel32 - 64-bit fields cannot be used with a 32-bit relocation.
Further while there also deal with *-*-pe* in x86-64.exp, even if (right
now) perhaps only for completeness.
[1] https://sourceware.org/pipermail/binutils/2024-November/137548.html
7 files changed
