On Thu, Sep 15, 2022 at 10:56:58AM +0800, Chen Zhongjin wrote:

We have found some anonymous information on x86 in .rodata.

Well yes, but that's still a bunch of heuristics on our side.

I'm not sure if those are *all* of Josh wanted on x86, however for arm64 we
did not found that in the same section so it is a problem on arm64 now.

Nick found Bolt managed the ARM64 jumptables:

  https://github.com/llvm/llvm-project/blob/main/bolt/lib/Target/AArch64/AArch64MCPlusBuilder.cpp#L484

But that does look like a less than ideal solution too.

Does the compiler will emit these for all arches? At lease I tried and
didn't find anything meaningful (maybe I omitted it).

That's the question; can we get the compiler to help us here in a well
defined manner.