Daniil Kovalev 56fd2472d8 [PAC] Sign LR with B key for non-leaf functions with ptrauth-returns attr (#100552) ...

For pauthtest ABI, there is a bunch of ptrauth-* options, including
ptrauth-returns. Use "ptrauth-returns" function attribute to indicate
need for LR signing with B key for non-leaf function to avoid using
"sign-return-address" and "sign-return-address-key" which were
originally designed for pac-ret.

Co-authored-by: Ahmed Bougacha <ahmed@bougacha.org>
Co-authored-by: Anatoly Trosinenko <atrosinenko@accesssoftek.com>

2024-07-25 22:21:03 +03:00

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