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Index > OS Construction > GDT Info in Intel Manuals?

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rhyno_dagreat



Joined: 31 Jul 2006
Posts: 487
Location: Maryland, Unol Daleithiau
rhyno_dagreat
I was browsing through both the 2003 and 2006 version of the Intel IA-32 processor line manuals, trying to find info for how to set up the GDT (what bits/bytes represent what and etc.) and what I found didn't give me enough detail. Could anyone point me in the right direction inside the manuals as to where it would say how the GDT is set up?

Thanks!

-Ryan Lloyd
Post 02 Sep 2007, 03:55
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ManOfSteel



Joined: 02 Feb 2005
Posts: 1154
ManOfSteel
Software Developer's Manual, Volume 3: System Programming Guide
- 3.4.3: Segment Descriptors
- 3.5: System Descriptor Types
- 4.2: Fields And Flags Used For Segment-Level And Page-Level Protection
Post 02 Sep 2007, 06:03
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DOS386



Joined: 08 Dec 2006
Posts: 1901
DOS386
Quote:
I was browsing through both the 2003 and 2006 version of the Intel IA-32 processor line manuals, trying to find info for how to set up the GDT (what bits/bytes represent what and etc.) and what I found didn't give me enough detail.


Latest is not always the best Laughing

http://board.flatassembler.net/download.php?id=3093

Nevertheless, some more detail/descriptive info would be appreciated Wink

_________________
Bug Nr.: 12345

Title: Hello World program compiles to 100 KB !!!

Status: Closed: NOT a Bug
Post 02 Sep 2007, 11:42
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rhyno_dagreat



Joined: 31 Jul 2006
Posts: 487
Location: Maryland, Unol Daleithiau
rhyno_dagreat
Ah. I'm writing a 32-bit OS for a course in college and, iirc, there was a graphical depiction of how the GDT is set up in the manuals, which I was trying to find.
Post 02 Sep 2007, 17:43
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rhyno_dagreat



Joined: 31 Jul 2006
Posts: 487
Location: Maryland, Unol Daleithiau
rhyno_dagreat
ManOfSteel - That's what I was looking for! Thanks!
NTOSKRNL_VXE - Thanks for the text version! I actually jumped right to what I was looking for in it, so now I have two good resources. Hehe.
Post 02 Sep 2007, 17:47
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