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From: Tijl Coosemans <tijl@coosemans.org>
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Date: Thu, 1 Jul 2010 11:12:14 +0200
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Cc: "Sam Fourman Jr." <sfourman@gmail.com>
Subject: Re: kernel patch needed for wine?
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On Thursday 01 July 2010 03:07:09 Sam Fourman Jr. wrote:
>> i386 32bit-mode page table has no NX bit - the PAE page table has...
> 
> You are correct, I went in my BIOS, and disabled execute bit.
> 
> Then when I run the test C code, the get "trapped" just as expected
> on both 8.1 amd64 and CURRENT amd64 however World of warcraft still
> segfaults even though execute bit is disabled in BIOS.
> 
> I guess I am just confused on how linux fixed this with this patch
> 
> http://bugs.winehq.org/attachment.cgi?id=29155

Wine translates signals and their siginfo into windows exceptions.
In the test case you posted earlier you should try install the
sighandler with sigaction(2) and the SA_SIGINFO flag. Then print
the siginfo struct when you receive the signal and compare that to
Linux or FreeBSD/i386.