Brian F. Feldman writes:
> On Sun, 15 Aug 1999, Warner Losh wrote:
>
> > In message <[EMAIL PROTECTED]> "Brian F.
>Feldman" writes:
> > : I suppose, but wouldn't the proper place be under machdep? I agree that
> > : a linux top-level MIB would be easiest to remember.
> >
> > Linux isn't machdep. It is MI since we could have Linux/Alpha or
> > Linux/MIPS emulators...
>
> Well then, we need to move it a directory level and take out machine
> dependencies, and make it machine independent.
>
Linux is actually a little bit machdep: we can't move it all up a
directory level because most of the syscall numbers, as well as many
flags (to mmap, ioctl, etc) are different between linux/i386 &
linux/alpha. They bootstrapped themselves off of osf/1 & never
reverted back to their own flags/syscall numbers, they just grew a new
set instead. So I'd suggest moving everything but linux.h & the
syscall related files up a level. There will need to be some ifdefs
in the code, but not many.
I've been working a little on getting the Linuxulator running on
FreeBSD/alpha. Because linux is such a bloody cludge (the syscall &
flags differences), its a bit more difficult that I initially thought
it would be. The also call some functions (osf1_setsysinfo, for
example) which are really osf/1 calls. Luckily, I have my osf/1
compat code which I'm using to field these.
Right now it works well enough to install linux_base from ports (good
job in keeing it MI, Marcel!) & run things like ls, uname, etc.
However, its not useful for anything real just yet. My goal is to get
em86 (the x86 emulator that lets linux/alpha run linux/i386 binaries)
running, as well as the Compaq compilers.
Drew
PS: Is anybody interested in reviewing my osf/1 compat code so that it
can be comitted? It works quite well (SimOS, Netscape, Mathematica,
Matlab, S-Plus, emacs, etc all run), but I'd really like somebody to
look it over before I commit it. I've left it at
http://www.freebsd.org/~gallatin/osf1.tar.gz
------------------------------------------------------------------------------
Andrew Gallatin, Sr Systems Programmer http://www.cs.duke.edu/~gallatin
Duke University Email: [EMAIL PROTECTED]
Department of Computer Science Phone: (919) 660-6590
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