Mail Archives: djgpp-workers/1996/03/27/22:35:09
Date: | Wed, 27 Mar 1996 22:27:46 -0500
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From: | dj (DJ Delorie)
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Message-Id: | <199603280327.WAA27469@delorie.com>
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To: | djgpp-workers
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Subject: | [idr AT cs DOT pdx DOT edu: Bugs in crt0.s]
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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. :(
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