First, disallow R_X86_64_PC64 - generally only absolute relocations are
allowed in getDynRel. glibc and musl don't support R_X86_64_PC64 as
dynamic relocations.
Second, support R_X86_64_32 as dynamic relocation for the ILP32 ABI
(x32). GNU ld's behavior looks like:
- R_X86_64_32 => R_X86_64_RELATIVE
- R_X86_64_64 with addend 0 => R_X86_64_RELATIVE
- R_X86_64_64 with non-zero addend => R_X86_64_RELATIVE64 (unsupported
by musl; compilers do not generate such constructs to the best of my
knowledge)
For now we require R_X86_64_64 to be resolved at link-time for x32.
Fix#140465
13838efa3c