From mboxrd@z Thu Jan  1 00:00:00 1970
To: 9fans@9fans.net
Subject: Re: [9fans] _tos puzzle
From: "Russ Cox" <rsc@swtch.com>
Date: Fri,  9 May 2008 09:08:44 -0400
In-Reply-To: <7A069CFA-C55D-4B5F-99B3-B1E82EC0D4BF@kix.in>
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> I did, and to my surprise, AX is 0, even though I set it properly in
> the loader. It appears as if Linux is setting AX to 0 sometime after
> the loader finishes, but before the executable begins. All other
> registers, however, are preserved (eip being the most important).

The zero you see in AX is probably the return value from exec.

Russ