[PATCH] D63121: [ELF] Make the rule to create relative relocations in a writable section stricter

Thu Jun 13 02:45:09 PDT 2019

peter.smith added a comment.

> I'll have a think to see if there are any other relocation types besides R_ARM_TARGET1 that LLD supports that can be made into a R_ARM_RELATIVE. I don't know PPC very well unfortunately. The other case I thought of that could be difficult is ILP32, where even on something like X86_64, or AArch64 the symbolic rel for a pointer would be the 32-bit relocation. I know LLD doesn't support the AArch64 ILP32 so this isn't a problem right now.

Taken a look; on the Arm side I can't find anything other than R_ARM_TARGET1 and to a lesser extent R_ARM_TARGET2 that need to be considered as an alias for R_ARM_ABS32, when  considering whether R_ARM_RELATIVE can be used.

Repository:
  rL LLVM

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  https://reviews.llvm.org/D63121/new/

https://reviews.llvm.org/D63121