AArch64 (also known as ARMv8-A) is a 64-bit instruction set architecture (ISA) that is used in many modern ARM processors. It is a Reduced Instruction Set Computing (RISC) architecture that is designed for efficient execution of instructions and low power consumption.

The AArch64 ISA includes a large number of registers, which are used to store data and intermediate results during the execution of a program. It also includes a wide range of instructions for performing arithmetic, logical, and control operations, as well as instructions for accessing memory and interacting with peripherals.

The AArch64 ISA is used in a variety of devices, including servers, desktop computers, laptops, and embedded systems. It is known for its high level of performance and energy efficiency, which make it well-suited for use in a wide range of applications.

Overall, the AArch64 ISA is a powerful and flexible architecture that is used in many modern devices and applications. It is known for its efficiency and low power consumption, as well as its support for 64-bit integers and pointers, which make it well-suited for use in a wide range of applications.

Aarch32 and aarch64 are two different instruction set architectures (ISAs) used in computers. Aarch32 is a 32-bit ISA, while aarch64 is a 64-bit ISA. This means that aarch64 is capable of handling larger amounts of data and memory compared to aarch32. In general, aarch64 is more powerful and efficient than aarch32, but it is not backward-compatible with aarch32. This means that software designed for aarch32 may not be able to run on aarch64 without modification

RegistersInstruction setCalling convention

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