From: Rich Felker <dalias@aerifal.cx>
To: musl@lists.openwall.com
Subject: Re: Compatability: missing sys/vm86.h
Date: Wed, 11 Apr 2012 22:35:20 -0400 [thread overview]
Message-ID: <20120412023520.GF7281@brightrain.aerifal.cx> (raw)
In-Reply-To: <20120410130024.10acbcfb@newbook>
On Tue, Apr 10, 2012 at 01:00:24PM -0700, Isaac Dunham wrote:
> sys/vm86.h is largely a wrapper for asm/vm86.h from linux-libc-dev, but
> provides one other function (prototype per man 2 vm86):
>
> int vm86(unsigned long fn, struct vm86plus_struct *v86);
>
> There are no feature test macros required.
>
> This is needed for some versions of Xvesa/Xfbdev, as well as dev86,
> dosemu, and a number of other programs.
Hmm, I recently (essentially) rejected a request to include sys/io.h
(legacy 16bit x86 port io) on the basis that it has no modern use and
is machine-specific. However vm86 is a little bit different since it's
a syscall.. and dosemu, while old and ugly, may be useful to some
people. Xfbdev using vm86 is just broken, but since there do seem to
be valid uses, I think this could potentially be added... and it might
call on me to rethink the rejection of sys/io.h.
Rich
next prev parent reply other threads:[~2012-04-12 2:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-10 20:00 Isaac Dunham
2012-04-12 2:35 ` Rich Felker [this message]
2012-04-12 23:59 ` Isaac Dunham
2012-04-13 0:18 ` Rich Felker
2012-04-13 2:45 ` sed unmacro Isaac Dunham
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