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Everything about Global Descriptor Table
Memory data structure in Intel processors
The Global Descriptor Table (GDT) is a core part of Intel's x86 architecture that helps manage how memory is accessed and protected. Introduced with the Intel 80286 processor, it plays a key role in defining memory segments and their attributes: the base address, the size, and access privileges like executability and writability. Wikipedia →
🧠Start here: a 6-step reading path
- Read the overview: Global Descriptor TableA 5-minute orientation
- Pick up a classic book: HackingThe most-reprinted book on the subject
- Go sideways: Protected modeA closely related topic
- Go sideways: General protection faultA closely related topic
đź“– Definitions
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🗂️ The subject at a glance
🏆 Landmark papers (most cited)
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đź“š Books worth reading
HackingJon Erickson, Jon Erickson · 2003
Advanced Machine Learning Technologies and ApplicationsAboul Ella Hassanien · 2012
Introduction to compiler constructionParsons, Thomas W. · 1992
INTRODUCTION TO CLINICAL EXAMINATION, PRACTICAL SKILLS AND THEORETICAL CONCEPTS IN COMMUNITY HEALTH SCIENCE · 2020
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
đź”— Related topics
- Protected mode In computing, protected mode, also called protected virtual address mode, is an operational mode of x86-compatible central processing units (CPUs). It…
- General protection fault A general protection fault (GPF) in the x86 instruction set architectures (ISAs) is a fault (a type of interrupt) initiated by ISA-defined protection mechanisms…
- Extended memory In DOS memory management, extended memory refers to memory above the first megabyte (220 bytes) of address space in an IBM PC or compatible with an 80286…
- X86 memory segmentation x86 memory segmentation is a term for the kind of memory segmentation characteristic of the Intel x86 computer instruction set architecture. The x86 architectur…
- Intel 80286 The Intel 80286 (also called the iAPX 286 or just 286) is a 16-bit microprocessor introduced by Intel on February 1, 1982, as the second generation of…
- Interrupt descriptor table The interrupt descriptor table (IDT) is a data structure used by the x86 architecture to implement an interrupt vector table. The IDT is used by the processor…
- Real mode Real mode, also called real address mode, is an operating mode of all x86-compatible CPUs. The mode gets its name from the fact that addresses in real…
- X86 x86 (also known as 80x86 or the 8086 family) is a family of complex instruction set computer (CISC) instruction set architectures initially developed by…