In this article, we will discuss registers for x86 32-bit and 64-bit architecture. Firstly, we will discuss the registers for x86 32-bit processors. After that, we will discuss the registers for x86 64-bit processors.

General Purpose Registers For x86 32-bit architecture

x86 architecture has 8 general-purpose 32-bit registers. They are:

• EAX
• EBX
• ECX
• EDX
• EBP
• ESP
• ESI
• EDI

Let’s try to understand what they are and where they are used.

EAX

EAX is also called the Extended Accumulator Register. This register is commonly used for multiplication and division operations. For example,

MUL EBX

This assembly instruction will multiply the 32-bit content of EBX with the content of the EAX …

• General Purpose Registers For x86 32-bit architecture

• Segment Registers For x86 32-bit Architecture

• Pointer Register in x86 32-bit Architecture

• EFLAGS Register in x86 32-bit Architecture

• Registers For x86 64-bit Architecture or x64