Talk:GDT Tutorial

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Revision as of 05:09, 13 June 2012 by osdev>Jbemmel (Created page with "=== Bit shifting error in second code sample === <code lang="C"> // Create the high 32 bit segment descriptor = limit & 0x000F0000; descriptor |= (flag << 8) &...")
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Bit shifting error in second code sample

 // Create the high 32 bit segment
 descriptor  =  limit       & 0x000F0000;
 descriptor |= (flag <<  8) & 0x00F0FF00;
 descriptor |= (base >> 16) & 0xFF0000FF;

At the last line, the upper 8 bits will always be 0. What is the proper shifting?

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