Post #3664135
2026-07-08 04:40 UTC
@ezhes_@mastodon.online @steve@discuss.systems how come `b +4` isn't a `nop` encoding?
Replies (2)
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@pearfalse@tech.lgbt 2026-07-08 12:54
@madcoder@infosec.exchange it doesn't meaningfully change PC, but it does set the link register to a new value
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@steve@discuss.systems 2026-07-08 20:29
@madcoder@infosec.exchange @ezhes_@mastodon.online it’ll turn out that somewhere there’s code that depends on it having some uArch effect (terminating an issue group or whatever) to work around a silicon bug on some obscure CPU 🤪