Course 5: Phase 2 – Core Instructions and Programming Topic: Memory Operations and Complex Data Structures, Bare-Metal Programming Practice 5.1 Advanced Memory Operations Multi-Byte Memory Operations <span>LDP</span>/<span>STP</span>: Load/Store two registers at once (supports 64-bit and 32-bit modes). stp x0, x1, [sp, #-16]! // Push x0 and x1 onto the stack, SP -= 16 ldp x2, … Read more
Let’s set a learning plan for ARMv8 assembly language. After learning, aim to master ARMv8 assembly knowledge and be able to write some simple assembly code. Phase 1: Basic Preparation (1-2 weeks) Goals: Understand computer architecture and core concepts of the ARMv8 architecture. Set up the development environment. Write the first assembly program. Learning Content: … Read more
Course 3: Stage 2 – Core Instructions and Programming Topic：Function Calls and Stack Operations, ARMv8 Calling Conventions, Bare-Metal Programming Practice 3.1 Basics of Function Calls Core Concepts： BL Instruction： <span>BL label</span>：Jump to<span>label</span> to execute, while saving the return address (the address of the next instruction) to<span>LR</span> (X30). After the function call, return using<span>RET</span> (<span>RET</span> is … Read more
Course 1: Stage 1 – Basic Preparation (Week 1) Topic: Bare-metal program development, PL011 UART communication, ARMv8 boot process 1.1 Basics of Bare-metal Programming Core Concepts: Bare-metal Program: Runs directly on hardware without operating system support. Boot Process: The CPU starts executing instructions from the reset address (usually <span>0x0</span> or <span>0x8000</span>). Hardware (such as memory … Read more
Click the blue "Arm Selected" in the upper left corner and select "Set as Favorite" Types of Asynchronous Exceptions What asynchronous exceptions (interrupts) exist in the system? Official documentation states:<span><span>In the Armv8-A architecture, asynchronous exceptions that are taken to AArch64 state are also known as interrupts.</span></span> Anyone who says interrupts are: FIQ, IRQ is a … Read more
https://www.zhihu.com/question/290767285/answer/1200063036 Author: Longquan Temple Sweeping Monk (Chief Browser Architecture Expert, Author of the World’s Smallest Chromium Kernel – Miniblink), authorized for reprint Let’s take a look at the open-source Chromium; it is indeed extremely complex. The source code alone is over ten gigabytes. We can’t help but wonder, what exactly is in Chromium? How can … Read more
Thought: A64 refers to the instruction set architecture, aarch64 is the 64-bit architecture, armv8/armv9 are also architectures, Trustzone is a type of security architecture, they are all architectures, confused? What is arm64? 1. armv7/armv8/armv9 are the real architectures of ARM. The term architecture can be understood as a technical specification, a technical reference, a design, … Read more
Overview of ARMv8 Architecture The ARMv8 architecture includes 32-bit and 64-bit execution states, introducing the ability to execute with 64-bit wide registers while providing backward compatibility mechanisms to allow existing ARMv7 software to run. • AArch64: The 64-bit execution state in ARMv8. • AArch32: The 32-bit execution state in ARMv8, which is nearly identical … Read more