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Home > Solution > What Are The Concepts Of The Main Stack And Process Stack Of ARM's Cortex-M3 And M4?

What Are The Concepts Of The Main Stack And Process Stack Of ARM's Cortex-M3 And M4?

Auth： Date：2024/7/15 Source：Shanhai Xincheng Visit：39 Related Key Words: What are the concepts of the Main Stack and Process Stack of ARM's Cortex-M3 and M4?
Previous："The X86 Of RISC-V, ARM, And Inte Three Different Chip Architectures, Their Respective Characteristics And Advantages"
Next："The Difference Between Single -Chip Microcomputer ADC And AD Chip"

ARM的Cortex-M3和Cortex-M4处理器中，main stack和process stack是两个不同的概念。

 

ARM的Cortex-M3和Cortex-M4处理器中.png

 

Main stack是指主函数的堆栈。在C语言程序中，当程序开始执行时，主函数（main函数）会被调用。为了执行主函数中的代码，需要使用一个堆栈来存储函数的局部变量、函数参数和返回地址等信息。这个堆栈就是主堆栈。

主堆栈的大小可以通过编译器进行配置，通常在编译时被设定为一个固定的大小。在Cortex-M系列处理器中，主堆栈的大小通常被设定为4KB。

 

Process Stack：

Process stack是指处理器的堆栈，也被称为任务堆栈或上下文堆栈。在多任务操作系统或单任务操作系统中，当任务或进程被切换时，需要保存和恢复处理器的上下文信息，包括寄存器、堆栈指针等。这些信息被存储在一个被称为进程堆栈的结构中。

进程堆栈的大小通常被设定为一个固定的大小，并被分配给每个任务或进程。在Cortex-M系列处理器中，进程堆栈的大小可以通过编译器进行配置。

 

Main stack是用于存储主函数相关信息的堆栈，而Process stack是用于存储任务或进程上下文信息的堆栈。两者在处理器的运行过程中发挥着不同的作用。

Previous："The X86 Of RISC-V, ARM, And Inte Three Different Chip Architectures, Their Respective Characteristics And Advantages"
Next："The Difference Between Single -Chip Microcomputer ADC And AD Chip"

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