Global Descriptor Table: Difference between revisions

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Global Descriptor Table (view source)

Revision as of 16:28, 3 September 2011

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[[Image:Gdtr.png|frame|center|GDTR]]
 
The <tt>offset</tt> is the virtuallinear address of the table itself, which means that paging applies. The <tt>size</tt> is the size of the table subtracted by 1. This is because the maximum value of <tt>size</tt> is 65535, while the GDT can be up to 65536 bytes (a maximum of 8192 entries). Further no GDT can have a size of 0.
 
The table contain 8-byte entries. Each entry has a complex structure:
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