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Date: Sun, 4 Nov 2007 14:35:18 +0100
From: Roman Divacky <rdivacky@freebsd.org>
To: "Valery V.Chikalov" <valera@chikalov.dp.ua>
Message-ID: <20071104133518.GA7275@freebsd.org>
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Cc: freebsd-emulation@freebsd.org
Subject: Re: Linux emulation on FreeBSD AMD64
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On Sun, Nov 04, 2007 at 03:23:15PM +0200, Valery V.Chikalov wrote:
> Roman Divacky ??????????:
> > 
> > I am a little confused.. you are saying that
> > 
> > 1) oracle calls m* on 0x50000000 with PROT_EXEC but fbsd does not set it on the map
> > 
> > or
> > 
> > 2) oracle does not set this protection at all and the OS is supposed to have set on default?
> > 
> > roman
> 
> 
> rather 3) I cant find function which oracle calls to manage memory at
> 0x50000000, this is why I ask for help.
> I can only state that linux_mprotect dont called with addr at 0x50000000.
> 
> Nov  4 12:40:14 tiger kernel: mprotect: addr:55c00000, len:4096, prot:1,
> bsdprot:5, ret:0
> Nov  4 12:40:14 tiger kernel: mprotect: addr:55c81000, len:4096, prot:1,
> bsdprot:5, ret:0
> 
> This are only addresses which are arguments for linux_mprotect.
> I have suspected linux_mmap_common but it not called either.

the protection can be set from mmap(), can you see if there is a mmap call with 0x50....0 ?