[libre-riscv-dev] [Bug 264] ISA switch needs to be a privileged operation

bugzilla-daemon at libre-riscv.org bugzilla-daemon at libre-riscv.org
Mon Mar 23 08:57:37 GMT 2020


--- Comment #9 from Jacob Lifshay <programmerjake at gmail.com> ---
(In reply to cand from comment #7)
> Storing state sounds dangerous, consider someone jumping into the middle of
> compressed instrs.

Just as dangerous as someone jumping into the middle of an x86 instruction.

It's not at all a problem for compilers, since they can arrange for all branch
targets to not be in the middle of compressed instructions.

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