Date: Wed, 24 Apr 2002 16:59:47 -0700 From: Peter Wemm <peter@wemm.org> To: Kenneth Culver <culverk@alpha.yumyumyum.org> Cc: John Baldwin <jhb@FreeBSD.ORG>, FreeBSD-CURRENT List <freebsd-current@FreeBSD.ORG>, freebsd-hackers@FreeBSD.ORG, Brandon S Allbery KF8NH <allbery@ece.cmu.edu>, Andrew Gallatin <gallatin@cs.duke.edu> Subject: Re: implementing linux mmap2 syscall Message-ID: <20020424235947.0B67E38FD@overcee.wemm.org> In-Reply-To: <20020424194250.Y39769-100000@alpha.yumyumyum.org>
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Kenneth Culver wrote:
> > I'm actually still not seeing a match between what's in truss, and what's
> > in my printed-out args, but it seems to be working anyway...
> >
> Argh, it's not working again... It was working on an install of ms office,
> but it won't work on some old windows game.. (winex) and it's still not
> setting the last arg (or register properly):
>
> truss output:
>
> linux_mmap2(0x65430000,0x100000,0x3,0x11,0x9,0x6) = 1698889728
> (0x65430000)
>
> notice that the last arg is 0x6, that's the page offset...
>
> what the kernel prints for the same call:
>
> mmap2(0x65430000, 1048576, 3, 0x00000011, 9, 0)
>
> notice that they both have all the same values until you get to the last
> one... at which point the value is wrong... Apparently this only causes
> problems on some windows programs that one may try to execute, and not on
> others...
>
> So, where can I force this to get set?
>
> Ken
Try this:
RCS file: /home/ncvs/src/sys/i386/linux/linux_sysvec.c,v
retrieving revision 1.99
diff -u -2 -r1.99 linux_sysvec.c
--- linux_sysvec.c 4 Apr 2002 17:49:46 -0000 1.99
+++ linux_sysvec.c 24 Apr 2002 23:57:23 -0000
@@ -711,4 +711,5 @@
args[3] = tf->tf_esi;
args[4] = tf->tf_edi;
+ args[5] = tf->tf_ebp;
*params = NULL; /* no copyin */
}
Cheers,
-Peter
--
Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com
"All of this is for nothing if we don't go to the stars" - JMS/B5
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