GDT Tutorial: Difference between revisions

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GDT Tutorial (view source)

Revision as of 13:49, 17 March 2015

No change in size ,  9 years ago
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a little typo/grammar fix
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VisualWikitext
(Fixed bit shifting error as pointed out on the talk page, some comments and changed SEG_TYPE to SEG_DESCTYPE to differentiate segment and descriptor types)
m (a little typo/grammar fix)
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=== Filling the table ===
 
You noticed that I didn't gavegive a real structure for <tt>GDT[]</tt>, didn't you? That's on purpose. The actual structure of descriptors is a little messy for backwards compatibility with the 286's GDT. Base address are split on 3 different fields and you cannot encode any limit you want. Plus, here and there, you have flags that you need to set up properly if you want things to work.
 
<source lang="c">
Alexander
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