Date: Mon, 29 May 95 8:40:54 MET DST From: sos@FreeBSD.org To: bde@zeta.org.au (Bruce Evans) Cc: freebsd-current@FreeBSD.org, henrich@crh.cl.msu.edu Subject: Re: LINUX emulator working (dare I say DOOM here we goooooo) Message-ID: <9505290640.AA10750@login.dknet.dk> In-Reply-To: <199505290455.OAA28828@godzilla.zeta.org.au>; from "Bruce Evans" at May 29, 95 2:55 pm
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In reply to Bruce Evans who wrote:
>
> >I've tried just about everything on my 0412 system, but I get nothing but Bus
> >Errors (core dumped). Which feels like the lkm isnt, any suggestions?
>
> Did you use the undcoumented option COMPAT_LINUX? This option isn't even
> in LINT and causes compiler warnings when used. `linux_syscall' in
> exception.s is out of date and messes up `intr_nesting_level'.
Errm, Yes I forgot to tell, you need a kernel with options
options COMPAT_LINUX
options SYSVSHM
options SYSVMSG
options SYSVSEM
> I tried a couple of simple Linux utilities and test programs and found
> the following:
>
> - I have libraries in /lib (as in Linux) and ld.so in /sbin (not quite
> as in Linux) so there was almost a name clash. Linux's libc.so.4.5.26
> worked because its major number is larger than FreeBSD's libc.so.2.1.
You should put you linux ld.so + libs in /lib as of yet, this is
about to change though..
> - Linux OMAGIC shared executables (with text and data together) don't work.
There is no support for this yet (if ever)
> - Linux ZMAGIC shared executables seem to work.
> - FreeBSD's `file' works better than Linux's `file' to tell me what Linux
ZMAGIC & QMAGIC executables work.
> executables are :-). This may be the fault of the Linux installation
> being old.
> - some debugging printfs enabled by COMPAT_LINUX were executed.
> - In an i/o testing program, signal(SIGINT, onsig) returned SIG_ERR.
Hmm, from the kernel ?? I think not, but the lkm has some..
> When this error was ignored, select() returned an error. I expected
> these to work and termios stuff to fail a little later.
Signals are not dealt with proberly yet, we need some changes to
our signal system in order to do that..
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Soren Schmidt (sos@FreeBSD.org | sos@login.dknet.dk) FreeBSD Core Team
So much code to hack -- so little time
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