RT-Thread-rtthread 修改了.ld 与borad.h 的ram起始地址后，有些线程会神奇溢出，没修改前正常RT-Thread问答社区

rtthread 修改了.ld 与borad.h 的ram起始地址后，有些线程会神奇溢出，没修改前正常

发布于 2024-01-11 15:49:50 浏览：337 订阅该版

.ld链接文件
```c
OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
OUTPUT_ARCH(arm)
ENTRY(system_vectors)

MEMORY
{
    RAM  (rwx)   : ORIGIN = 0x02000000, LENGTH = 0x06000000
}

SECTIONS
{
    . = 0x02000000;

. = ALIGN(4);
    .text : 
    {
        PROVIDE(__vectors_start = .);
        *(.vectors)
        PROVIDE(__vectors_end = .);
        . = ALIGN(4);
        
        *(.text)
        *(.gnu.linkonce.t*)
        
        /* section information for finsh shell */
        . = ALIGN(4);
        __fsymtab_start = .;
        KEEP(*(FSymTab))
        __fsymtab_end = .;
        . = ALIGN(4);

. = ALIGN(4);
        __vsymtab_start = .;
        KEEP(*(VSymTab))
        __vsymtab_end = .;
        . = ALIGN(4);

/* section information for modules */
        . = ALIGN(4);
        __rtmsymtab_start = .;
        KEEP(*(RTMSymTab))
        __rtmsymtab_end = .;
        . = ALIGN(4);

/* section information for initial. */
        . = ALIGN(4);
        __rt_init_start = .;
        KEEP(*(SORT(.rti_fn*)))
        __rt_init_end = .;
        . = ALIGN(4);

/* section information for utest */
        . = ALIGN(4);
        __rt_utest_tc_tab_start = .;
        KEEP(*(UtestTcTab))
        __rt_utest_tc_tab_end = .;
        . = ALIGN(4);
    }

. = ALIGN(4);
    .rodata : { *(.rodata) *(.rodata.*) *(.gnu.linkonce.r*) *(.eh_frame) }

. = ALIGN(4);
    .ctors :
    {
        PROVIDE(__ctors_start__ = .);
        KEEP(*(SORT(.ctors.*)))
        KEEP(*(.ctors))
        PROVIDE(__ctors_end__ = .);
    }

.dtors :
    {
        PROVIDE(__dtors_start__ = .);
        KEEP(*(SORT(.dtors.*)))
        KEEP(*(.dtors))
        PROVIDE(__dtors_end__ = .);
    }

. = ALIGN(4);
    .data :
    {
        *(.data)
        *(.data.*)
        *(.gnu.linkonce.d*)
    }

. = ALIGN(4);
    .nobss : { *(.nobss) }
    
    . = ALIGN(4);
    __bss_start__ = .;
    __bss_start = .;
    .bss : { *(.bss)}
    . = ALIGN(4);
    __bss_end = .;
    __bss_end__ = .;
    . = ALIGN(4);

/* stabs debugging sections. */
    .stab 0 : { *(.stab) }
    .stabstr 0 : { *(.stabstr) }
    .stab.excl 0 : { *(.stab.excl) }
    .stab.exclstr 0 : { *(.stab.exclstr) }
    .stab.index 0 : { *(.stab.index) }
    .stab.indexstr 0 : { *(.stab.indexstr) }
    .comment 0 : { *(.comment) }
    .debug_abbrev 0 : { *(.debug_abbrev) }
    .debug_info 0 : { *(.debug_info) }
    .debug_line 0 : { *(.debug_line) }
    .debug_pubnames 0 : { *(.debug_pubnames) }
    .debug_aranges 0 : { *(.debug_aranges) }

_end = .;
}
```

borad.h 
```c
/**************************************************************************//**
*
* @copyright (C) 2019 Nuvoton Technology Corp. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date            Author       Notes
* 2020-1-16       Wayne        First version
*
******************************************************************************/

#ifndef __BOARD_H__
#define __BOARD_H__

#include "NuMicro.h"
#include "drv_sys.h"

#if defined(__CC_ARM)
    extern int Image$$RW_RAM1$$ZI$$Limit;
    #define BOARD_HEAP_START    (void*)&Image$$RW_RAM1$$ZI$$Limit
#else
    extern int __bss_end;
    #define BOARD_HEAP_START    ((void *)&__bss_end)
#endif

#define BOARD_SDRAM_START   0x2000000
#define BOARD_SDRAM_SIZE    0x6000000
#define BOARD_HEAP_END      ((void*)BOARD_SDRAM_SIZE)

#if defined(RT_USING_MTD_NAND)
    #include <drivers/mtd_nand.h>
    #define MTD_SPINAND_PARTITION_NUM 3
    extern struct rt_mtd_nand_device mtd_partitions[MTD_SPINAND_PARTITION_NUM];
#endif

extern void rt_hw_board_init(void);
extern void nu_clock_init(void);
extern void nu_clock_deinit(void);
extern void nu_pin_init(void);
extern void nu_pin_deinit(void);

#endif /* BOARD_H_ */
```

mmu映射关系
```c
static struct mem_desc hw_mem_desc[] =
{
    { 0x00000000, 0xFFFFFFFF,     0x00000000, RW_NCNB },     /* None cached for 4G memory */
    { 0x02000000, BOARD_SDRAM_SIZE - 1,   0x00000000, RW_CB   }, /* 64M cached DDR memory */
    { BIT31, (BIT31 | BOARD_SDRAM_SIZE) - 1,   BIT31, RW_NCNB }, /* Shadow DDR Map */
    { 0x3C000000, 0x3C004000 - 1,   0x3C000000, RW_NCNB },     /* 16K SRAM memory */
    { 0xBC000000, 0xBC004000 - 1,   0xBC000000, RW_NCNB }      /* 16K Shadow memory */
};
```
原本ram的起始地址是0x0，因为我做了一个boot，所以我app的地址需要往后移0x02000000，编译后，有几个线程出现溢出，注释掉又可以，这个问题应该和boot没关系，尝试过直接用烧录工具直接烧到0x02000000的位置。