Files
FFmpeg/libavutil
Martin Storsjö f72f692afa aarch64: Add PAC sign/validation of the link register
Whenever the link register is stored on the stack, sign it
before storing it and validate at a symmetrical point (with the
stack at the same level as when it was signed).

These macros only have an effect if built with PAC enabled (e.g.
through -mbranch-protection=standard), otherwise they don't
generate any extra instructions.

None of these cases were present when PAC support was added
in 248986a0db in 2022.

Without these changes, PAC still had an effect in the compiler
generated code and in the existing cases where we these macros were
used - but make it apply to the remaining cases of link register
on the stack.
2026-03-20 13:16:06 +02:00
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