[PATCH] D158641: [AArch64][Android][DRAFT] Fix FMV ifunc resolver usage on old Android APIs.

Wed Aug 23 14:36:01 PDT 2023

MaskRay added a comment.

In D158641#4611731 <https://reviews.llvm.org/D158641#4611731>, @rprichard wrote:

> [...]
>
> I suspect Bionic ought to apply relocations to libraries in a bottom-up fashion, so that libc.so is relocated before the executable or shared objects, but I _think_ it's currently top-down. Deferring ifunc relocations until after non-ifunc relocations are applied is a separate problem.

https://maskray.me/blog/2021-01-18-gnu-indirect-function#relocation-resolving-order glibc uses the bottom-up fashion. I agree that adopting the bottom-up fashion for Bionic will be great.

"l_initfini contains main, dep1.so, dep2.so, dep4.so, dep3.so, libc.so.6, ld.so. The relocation resolving order is ld.so (bootstrap), libc.so.6, dep3.so, dep4.so, dep2.so, dep1.so, main, ld.so."

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https://reviews.llvm.org/D158641