AArch64

1. 본문

AArch64 is the 64-bit state introduced in the Armv8-A architecture. It's a part of the Arm architecture family, known for its use in a wide range of devices. Here's a breakdown of its key features and aspects:

• Registers:
• Features 31 general-purpose 64-bit registers, named X0 to X30.
• X30 is typically used as the procedure link register (LR).
• A dedicated stack pointer register (SP).
• A zero register (XZR) that always reads as zero.
• Instruction Set: A64 is the 64-bit instruction set.
• Execution States: It has two execution states:
• AArch64: Uses 64-bit wide registers and 64-bit memory addressing.
• AArch32: 32-bit execution state for backward compatibility, using 32-bit general-purpose registers.
• Application Level Programmers' Model: Includes information on data types and representation and information on registers.
• Advanced SIMD (Single Instruction Multiple Data): An instruction set extension.
• This provides parallel processing of data for things like audio and video processing, 3D graphics, and image processing.

• Mobile Devices: Smartphones, tablets.
• Servers: High-performance computing, cloud infrastructure.
• Embedded Systems: Networking equipment, automotive, and industrial applications.
• Networking: High speed, low latency networks.