[Bug 268684] riscv libc: fix longjmp with 0 value

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 02 Jan 2023 13:04:21 UTC

Jessica Clarke <jrtc27@freebsd.org> changed:

           What    |Removed                     |Added
                 CC|                            |jrtc27@freebsd.org

--- Comment #1 from Jessica Clarke <jrtc27@freebsd.org> ---
This is a subset of https://reviews.freebsd.org/D29363 which I should get back
to. Note I instead opted for a conditional li, as both those instructions
compress and in theory should be macro-op fusable, or have a short
forward-branch optimisation applied, on cores that implement that. I believe
the SiFive 7 series does the latter.

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