Subject: Re: WARNING: Serious Pentium Bug
From: [email-masked] (Scott Warner)

10 Nov 1997 22:32:04 -0800
Message-ID: <[email-masked]>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
To: "Bryon Roche" <[email-masked]>, <[email-masked]>

So, the Pentium *should* recognize the instruction as illegal and crash the
program, but instead the program crashes the OS?  However did this get
discovered, and are there more instances?  It occurs to me that no
processor is safe from these kinds of things.

----------
> From: Bryon Roche <[email-masked]>
> To: Scott Warner <[email-masked]>
> Subject: Re: WARNING: Serious Pentium Bug
> Date: Monday, November 10, 1997 4:54 PM
> 
> The contents of char *x is just raw, assembled x86 code, so it assigns
> the address of local function pointer *f the address of x, the ASM code,
> then calls it. Apparently, the code crashes an _Intel_ _Pentium_ (NOT
> P6/PII)
> because of incorrect implementation of exception trapping. (i.e. this
> bug
> does not exist on non-Intel CPUs.
> 
> -- 
> /---------------------------\
> |Bryon Roche                |
> |mailto:[email-masked]|
> \---------------------------/
> 

-
For help on using this list (especially unsubscribing), send a message to
"[email-masked]" with one line of text: "help".