• IAR map文件说明


    map文件是一个底层变成文件必须掌握的

    IAR的map文件分为以下几个部分(以下的所引用的map内容)

    一、RUNTIME MODEL ATTRIBUTES

    CppFlavor                     = *
    __Heap_Handler                = Basic
    __SystemLibrary               = DLib
    __dlib_dynamic_initialization = normal
    

    二、PLACEMENT SUMMARY

    各section在存储器中的分配

    "A1":  place at 0x08000000 { ro section .intvec };
    "P1":  place in [from 0x08000000 to 0x080fffff] { ro };
    "P2":  place in [from 0x20000000 to 0x2001ffff] { rw, block CSTACK, block HEAP };
    
    • A1, FLASH空间,存放ro section.intvec
    • P1, FLASH空间,存放ro data
    • P2, sram空间,存放rw data, CSTACK, HEAP

    如上图:
    - A1里放的是.intvec,也就是复位向量表
    - P1里放的是可执行代码和一些只读的数据
    - P2第一部分存放.data,已经初始化的静态和全局变量
    - P2第二部分存放.bss,未初始化的静态和全局变量
    - P3第三部分存放CSTACK=0x4000和HEAP=0x1000.

    系统SP的起始地址为CSTACK的结束地址, cortex的堆栈向下生长,每次入栈都会消耗8个word(32字节)的SRAM空间

    堆栈大小设置如下图所示

    三、INIT TABLE

    显示与初始化有关的section tables

    四、MODULE SUMMARY

    显示所有被连接的文件信息,包括目标文件和库文件等

    五、ENTRY LIST

    给出了所有函数的入口地址,大小,类型

    六、目标代码占用ROM和RAM

    map文件的最后会给出目标代码占用的ROM和RAM空间大小

    48 598 bytes of readonly  code memory
    80 703 bytes of readonly  data memory
    62 395 bytes of readwrite data memory
    

    readonly codereadonly data使用的是ROM空间
    readwrite data使用的是SRAM空间

    附录:IAR Section 说明

    Section Description
    .bss Holds zero-initialized static and global variables.
    CSTACK Holds the stack used by programs.
    .data Holds static and global initialized variables.
    .data_init Holds initial values for .data sections when the linker directive initialize by copy is used.
    DLIB_PERTHREAD Holds variables that contain static states for DLIB modules.
    .exc.text Holds exception-related code.
    HEAP Holds the heap used for dynamically allocated data.
    .iar.dynexit Holds the atexit table.
    .init_array Holds a table of dynamic initialization functions.
    .intvec Holds the reset vector table
    IRQ_STACK Holds the stack for interrupt requests, IRQ, and exceptions.
    .noinit Holds _ _no_init static and global variables.
    .preinit_array Holds a table of dynamic initialization functions.
    .prepreinit_array Holds a table of dynamic initialization functions.
    .rodata Holds constant data.
    .text Holds the program code.
    .textrw Holds _ _ramfunc declared program code.
    .textrw_init Holds initializers for the .textrw declared section.

    Good Good Study! Day Day Up!

  • 相关阅读:
    bin/sh^M: bad interpreter: No such file or directory解决
    集群常见错误解决方案(转载)
    华为交换机型号前缀
    Intel超低功耗CPU的一些信息
    关于Datastage资料库的一点小发现
    Failed to connect to JobMonApp on port 13491
    鸡汤
    SVN and GitHub
    大数据
    Python
  • 原文地址:https://www.cnblogs.com/kdurant/p/4213836.html
Copyright © 2020-2023  润新知