PART A1 介绍ARM架构

The Arm architecture includes definitions

An associated debug architecture

Associated trace architectures that define PE Trace Units that implementers can implement with the associated processor hardware

the ARM features

A large uniform register file

not directly on memory contents by using load/store

Simple addressing modes

backwards compatibility

key attributes of ARM architecture

• Implementation size
• performance
• low power consumption

floating-point instruction about ARM

• AArch32 operate 32-bit general-purpose registers and the SIMD and floating-point regsiter(SIMD&FP register)
• AArch64 operate the SIMD and floating-point register and SVE register