On Thu, 28 Apr 2022 22:49:52 +0530 "Naveen N. Rao" <naveen.n....@linux.vnet.ibm.com> wrote:
> But, with ppc64 elf abi v1 which only supports the old -pg flag, mcount > location can differ between the weak and non-weak variants of a > function. In such scenarios, one of the two mcount entries will be > invalid. Such architectures need to validate mcount locations by > ensuring that the instruction(s) at those locations are as expected. On > powerpc, this can be a simple check to ensure that the instruction is a > 'bl'. This check can be further tightened as necessary. I was thinking about this more, and I was thinking that we could create another section; Perhaps __mcount_loc_weak. And place these in that section. That way, we could check if these symbols to see if there's already a symbol for it, and if there is, then drop it. -- Steve