From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <9052a35da1903cdda9a1a28c55905944@terzarima.net>
From: Charles Forsyth <forsyth@terzarima.net>
Date: Tue, 11 Jan 2011 23:58:33 +0000
To: 9fans@9fans.net
In-Reply-To: <AANLkTik8crzDNhXHPrQO8O1hg3E-APe=8Cyf2xTr1aMz@mail.gmail.com>
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Subject: Re: [9fans] plan9 go output faults on 9vx but ok on cpu
Topicbox-Message-UUID: 94e0349a-ead6-11e9-9d60-3106f5b1d025

>I did not realize this was currently supported by Plan 9 ... maybe I
>didn't get the memo?

go's 8c/8l convert extern register to references off a segment register,
although the implementation of extern register isn't general enough for plan 9 kernel use;
it's just enough for go. it sounds as though the current plan9/go implementation
instead changes its 8l to catch the GS references and convert them to references to known
locations on the per-process stack (which would also work for go).

i made a more accurate implementation of extern register in plan 9's own 8c/8l that
could for instance be used by kernels to make up and/or m extern register on x86,
but i'm not sure of its status.