eclipse+jlink在RAM中调试代码

只看该作者 · 2023-12-14 09:15

使用eclipse+jlink下载到flash中调试stm32g0已经可以，现在想把代码放到RAM中调试，改了3个地方，但失败了，请问有研究过的小伙伴吗？网上资料都查不到
1、定义VECT_TAB_SRAM宏定义
2、修改脚本文件，代码都映射到RAM中
3、修改Debug配置选项

如果只把某个函数定义到RAM中运行该怎么改？

/* Entry Point */
ENTRY(Reset_Handler)

/* Highest address of the user mode stack */
_estack = 0x20009000; /* end of RAM */
/* Generate a link error if heap and stack don't fit into RAM */
_Min_Heap_Size = 0x200;    /* required amount of heap  */
_Min_Stack_Size = 0x400; /* required amount of stack */

/* Specify the memory areas */
MEMORY
{
RAM (xrw)    : ORIGIN = 0x20004000, LENGTH = 20K
FLASH (rx)    : ORIGIN = 0x20000000, LENGTH = 16K
}

/* Define output sections */
SECTIONS
{
  /* The startup code goes first into FLASH */
  .isr_vector :
  {
. = ALIGN(4);
KEEP(*(.isr_vector)) /* Startup code */
. = ALIGN(4);
  } >FLASH

  /* The program code and other data goes into FLASH */
  .text :
  {
. = ALIGN(4);
*(.text)          /* .text sections (code) */
*(.text*)       /* .text* sections (code) */
*(.glue_7)       /* glue arm to thumb code */
*(.glue_7t)       /* glue thumb to arm code */
*(.eh_frame)

KEEP (*(.init))
KEEP (*(.fini))

. = ALIGN(4);
_etext = .;       /* define a global symbols at end of code */
  } >FLASH

  /* Constant data goes into FLASH */
  .rodata :
  {
. = ALIGN(4);
*(.rodata)       /* .rodata sections (constants, strings, etc.) */
*(.rodata*)       /* .rodata* sections (constants, strings, etc.) */
. = ALIGN(4);
  } >FLASH

  .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
  .ARM : {
__exidx_start = .;
*(.ARM.exidx*)
__exidx_end = .;
  } >FLASH

  .preinit_array    :
  {
PROVIDE_HIDDEN (__preinit_array_start = .);
KEEP (*(.preinit_array*))
PROVIDE_HIDDEN (__preinit_array_end = .);
  } >FLASH
  .init_array :
  {
PROVIDE_HIDDEN (__init_array_start = .);
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array*))
PROVIDE_HIDDEN (__init_array_end = .);
  } >FLASH
  .fini_array :
  {
PROVIDE_HIDDEN (__fini_array_start = .);
KEEP (*(SORT(.fini_array.*)))
KEEP (*(.fini_array*))
PROVIDE_HIDDEN (__fini_array_end = .);
  } >FLASH

  /* used by the startup to initialize data */
  _sidata = LOADADDR(.data);

  /* Initialized data sections goes into RAM, load LMA copy after code */
  .data :
  {
. = ALIGN(4);
_sdata = .;       /* create a global symbol at data start */
*(.data)          /* .data sections */
*(.data*)       /* .data* sections */

. = ALIGN(4);
_edata = .;       /* define a global symbol at data end */
  } >RAM AT> FLASH

  /* Uninitialized data section */
  . = ALIGN(4);
  .bss :
  {
/* This is used by the startup in order to initialize the .bss secion */
_sbss = .;       /* define a global symbol at bss start */
__bss_start__ = _sbss;
*(.bss)
*(.bss*)
*(COMMON)

. = ALIGN(4);
_ebss = .;       /* define a global symbol at bss end */
__bss_end__ = _ebss;
  } >RAM

  /* User_heap_stack section, used to check that there is enough RAM left */
  ._user_heap_stack :
  {
. = ALIGN(4);
PROVIDE ( end = . );
PROVIDE ( _end = . );
. = . + _Min_Heap_Size;
. = . + _Min_Stack_Size;
. = ALIGN(4);
  } >RAM

  /* Remove information from the standard libraries */
  /DISCARD/ :
  {
libc.a ( * )
libm.a ( * )
libgcc.a ( * )
  }

  .ARM.attributes 0 : { *(.ARM.attributes) }
}
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1万 · 2023-12-14 15:54

首先，你需要定义一个宏VECT_TAB_SRAM，这将告诉编译器中断向量表应该放在RAM中，而不是Flash。