我想在STM32F779I中编写micropython代码。我在运行应用程序时没有运行任何检测到的代码堆栈崩溃。
这是我的内存布局
/* Highest address of the user mode stack */
_estack = 0x20080000; /* end of RAM */
/* Generate a link error if heap and stack don't fit into RAM */
_Min_Heap_Size = 0x1000; /* required amount of heap */
_Min_Stack_Size = 0x2000; /* required amount of stack */
/* Specify the memory areas */
MEMORY
{
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048K
DTCMRAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K
SRAM1 (xrw) : ORIGIN = 0x20020000, LENGTH = 368K
SRAM2 (xrw) : ORIGIN = 0x2007C000, LENGTH = 16K
MEMORY_B1 (rx) : ORIGIN = 0x60000000, LENGTH = 0K
}
main_stack_base = _estack;
/* used by the startup code to populate variables used by the C code */
data_lma = LOADADDR(.data);
data_vma = ADDR(.data);
data_size = SIZEOF(.data);
/* used by the startup code to wipe memory */
ccmram_start = ORIGIN(SRAM1);
ccmram_end = ORIGIN(SRAM1) + 4;
/* used by the startup code to wipe memory */
sram_start = ORIGIN(SRAM1);
sram_end = ORIGIN(SRAM1) + LENGTH(SRAM1);
_ram_start = sram_start;
_ram_end = sram_end;
_codelen = LENGTH(FLASH);
_flash_start = ORIGIN(FLASH);
_flash_end = ORIGIN(FLASH) + LENGTH(FLASH);
_estack = ORIGIN(SRAM1) + LENGTH(SRAM1) - 8;
_sstack = _estack; /* tunable */
_heap_start = _ebss;
_heap_end = _sstack;
/* 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 */
} >SRAM1 AT> FLASH
_sidtcmram = LOADADDR(.dtcmram);
/* DTCMRAM section
*
* IMPORTANT NOTE!
* If initialized variables will be placed in this section,
* the startup code needs to be modified to copy the init-values.
*/
.dtcmram :
{
. = ALIGN(4);
_sdtcmram = .; /* create a global symbol at dtcmram start */
*(.dtcmram)
*(.dtcmram*)
. = ALIGN(4);
_edtcmram = .; /* create a global symbol at dtcmram end */
} >DTCMRAM AT> FLASH
_sisram2 = LOADADDR(.sram2);
/* SRAM2 section
*
* IMPORTANT NOTE!
* If initialized variables will be placed in this section,
* the startup code needs to be modified to copy the init-values.
*/
.sram2 :
{
. = ALIGN(4);
_ssram2 = .; /* create a global symbol at sram2 start */
*(.sram2)
*(.sram2*)
. = ALIGN(4);
_esram2 = .; /* create a global symbol at sram2 end */
} >SRAM2 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;
} >SRAM1
/* User_heap_stack section, used to check that there is enough SRAM1 left */
._user_heap_stack :
{
. = ALIGN(4);
PROVIDE ( end = . );
PROVIDE ( _end = . );
. = . + _Min_Heap_Size;
. = . + _Min_Stack_Size;
. = ALIGN(4);
} >SRAM1
/* MEMORY_bank1 section, code must be located here explicitly */
/* Example: extern int foo(void) __attribute__ ((section (".mb1text"))); */
.memory_b1_text :
{
*(.mb1text) /* .mb1text sections (code) */
*(.mb1text*) /* .mb1text* sections (code) */
*(.mb1rodata) /* read-only data (constants) */
*(.mb1rodata*)
} >MEMORY_B1
/* Remove information from the standard libraries */
/DISCARD/ :
{
libc.a ( * )
libm.a ( * )
libgcc.a ( * )
}
.ARM.attributes 0 : { *(.ARM.attributes) }
}
这是我运行micropython的方法：
mp_stack_set_top(&_estack);
mp_stack_set_limit((char *)&_estack - (char *)&_heap_end - 1024);
// GC init
//printf("CORE: Starting GC\n");
gc_init(&_heap_start, &_heap_end);
// Interpreter init
//printf("CORE: Starting interpreter\n");
mp_init();
mp_obj_list_init(mp_sys_argv, 0);
mp_obj_list_init(mp_sys_path, 0);
mp_obj_list_append(
mp_sys_path,
MP_OBJ_NEW_QSTR(MP_QSTR_)); // current dir (or base dir of the script)
// Execute the main script
//printf("CORE: Executing main script\n");
pyexec_frozen_module("boot.py");
答案 0 :(得分：2)
堆栈限制为负，因为&_estack和&_heap_end的值相同。
链接描述文件中有这一行
_sstack = _estack;
向下两行
_heap_end = _sstack;
计算以下表达式时
mp_stack_set_limit((char *)&_estack - (char *)&_heap_end - 1024);
它给出-1024作为结果。没有办法让堆栈使用率低于 。
在mp_stack_set_limit()中设置合理的大小。