Date: Wed, 27 Mar 1996 22:27:46 -0500
From: dj (DJ Delorie)
Message-Id: <199603280327.WAA27469@delorie.com>
To: djgpp-workers
Subject: [idr AT cs DOT pdx DOT edu: Bugs in crt0.s]

Date: Wed, 27 Mar 1996 18:58:38 +0000
From: Ian Romanick <idr AT cs DOT pdx DOT edu>
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To: dj AT delorie DOT com
Subject: Bugs in crt0.s
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I'm sure that this isn't to correct address to send a bug report to, but 
I couldn't find anything in the v2 that FAQ that suggested a better 
place.  (Not find it easily, at least)  Anyway, please change the 
following lines in src/libc/crt0/crt0.s (around line 103):

                movw    %cs, %cx        /* get CPL from %cs */
                andl    $3, %ecx
                shll    $5, %ecx        /* move it into place */
                orw     $0xc093, %cx

to:

                movw    %cs,%ax
                lar     %ax,%cx         /* get CPL from %cs */
                movb    %ch,%cl		/* move it into place */
                andl    $0x0060,%ecx	/* mask off unneeded bits *.
                orw     $0xc093,%cx

The original version will work in most places, but it is not correct.  
This code will NOT work if you try to run it from a DXE.  Well, it will 
work, but will cause your program to crash later. :(