Re: register x18

From: Mark Millard via freebsd-arm <>
Date: Thu, 15 Jul 2021 19:06:47 -0700
On 2021-Jul-15, at 17:40, Michael Tuexen <tuexen at> wrote:

> Dear all,
> register x18 seems to be special. What is it used for in FreeBSD?
> Best regards
> Michael


	• X18 is the platform register and is reserved for the use of platform ABIs. This is an additional temporary register on platforms that don't assign a special meaning to it.

So, special, yes. But I do not know what the "platform ABI" usage
for it might be on FreeBSD. So, for the most part, this does not
well-answer your question. Sorry.

Mark Millard
marklmi at
( went
away in early 2018-Mar)
Received on Fri Jul 16 2021 - 02:06:47 UTC

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