arm异常-阿里云

ARM异常

前言中断是十分重要的，我将按照arm异常->中断控制器->通用架构->应用层，来讲解，希望对大家有所帮助，同时也欢迎各位指正。一、异常异常是理解CPU运转最重要的一个知识点，几乎每种处理器都支持特定异常处理，中断是异常的一种。有时候我们衡量一个操作系统的时候实时性就是看OS最段响应...

ARM深入理解-hypervisor调试方法一（异常寄存器分析）

我们在编写裸机程序（baremetal）、虚拟化管理程序（hypervisor）和操作系统（OS）时，Debug分析程序是必不可少的。不像linux内核，有大量的调试方法，很多裸机程序、hypervisor没有完善的调试分析方法。异常相关寄存器但也不是无计可施࿰...

ARM深入理解-5.3-通往内核的大门(异常向量表_AArch32)

1 建立异常向量表2 示例3 使能中断异常的初始化就是建立异常向量表并使能异步异常（可以理解为中断）的过程。1 建立异常向量表在ARMv8架构的AArch32状态下启动处理器的时候，SCTLR.V决定了reset向量的位置，这与AArch64状态下是不同的（AArch64状态下，reset不再是向量...

ARM深入理解-5.2-通往内核的大门(异常向量表_AArch64)

1 建立向量表2 建立向量表的示例3 使能中断异常初始化的过程：建立异常向量表异常路由和屏蔽配置1 建立向量表AArch64中，reset不再是异常向量表的一部分，它有专用的配置输入管脚和寄存器。其余的异常存储在异常向量表中。1.1 Reset向量AArch64中，处理器的开始执行位置是跟处理器的实...

【嵌入式开发】ARM 异常向量表 ( 异常概念 | 异常处理流程 | 异常向量 | 汇编代码 )（二）

2. 链接器脚本gboot.lds 链接器脚本代码解析 :1.指明输出格式 ( 处理器架构 ) : 使用 OUTPUT_ARCH(架构名称) 指明输出格式, 即处理器的架构, 这里是 arm 架构的, OUTPUT_ARCH(arm) ;2.指明输出程序的入口 : 设置编译输出的程序入口位置, 语...

【嵌入式开发】ARM 异常向量表 ( 异常概念 | 异常处理流程 | 异常向量 | 汇编代码 )（一）

1. 异常相关概念(1) 异常异常定义 :1.异常简介 : 由于内部或者外部的一些事件 , 导致处理器停下正在处理的工作, 转而去处理这些发生的事;2.处理器状态 : 当遇到异常的时候, 先将处理器状态保存起来, 以便执行完异常处理程序后, 可以恢复处理器状态, 继续执行异常出现点下面的代码;3...

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更新时间 2024-03-01 21:42:25

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