GD32E230F8移植时发现全局变量rt_object_container数组未初始化

发布于 2022-12-11 01:52:37 浏览：737 订阅该版

启动运行后，系统函数rt_object_get_information一直返回RT_NULL，一直崩溃，RT-Thread 里边rt_object_container是个全局变量：
```c
struct rt_object_information *
rt_object_get_information(enum rt_object_class_type type)
{
    int index;

for (index = 0; index < RT_Object_Info_Unknown; index ++)
        if (rt_object_container[index].type == type) return &rt_object_container[index];

return RT_NULL;
}
```

```c
static struct rt_object_information rt_object_container[RT_Object_Info_Unknown] =
{
    /* initialize object container - thread */
    {RT_Object_Class_Thread, _OBJ_CONTAINER_LIST_INIT(RT_Object_Info_Thread), sizeof(struct rt_thread)},
#ifdef RT_USING_SEMAPHORE
    /* initialize object container - semaphore */
    {RT_Object_Class_Semaphore, _OBJ_CONTAINER_LIST_INIT(RT_Object_Info_Semaphore), sizeof(struct rt_semaphore)},
#endif
```

GDB调试如下（type == 9肯定时存在的）：

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20221211/910a6d4313405b78289838716703e11f.png)

我使用 print &rt_object_container, 发现rt_object_container里的所有变量都是0xFF值。
sct链接文件与startup.s 参考如下startup（用armcc编译）：
https://github.com/RT-Thread/rt-thread/tree/master/bsp/gd32e230k-start

对比了其它型号，我发现GD32目录下的都startup.s都是如下格式：

```
;/* reset Handler */
Reset_Handler   PROC
                EXPORT  Reset_Handler                     [WEAK]
                IMPORT  SystemInit
                IMPORT  __main
                LDR     R0, =SystemInit
                BLX     R0
                LDR     R0, =__main
                BX      R0
                ENDP
```

与gcc版本的相比：

```c
Reset_Handler:
    ldr r1, =_sidata
    ldr r2, =_sdata
    ldr r3, =_edata

subs r3, r2
    ble fill_bss_start

loop_copy_data:
    subs r3, #4
    ldr r0, [r1,r3]
    str r0, [r2,r3]
    bgt loop_copy_data

fill_bss_start:
    ldr r1, =__bss_start
    ldr r2, =__bss_end
    movs r0, 0
    subs r2, r1
    ble startup_enter
```

GCC版本都多了一些数据段初始化fill_bss_start。
GD32直接跳转到__main了，__main是armcc自带的c 库函数，似乎什么也没干，正常数据段里的结构体，应当自动复制到内存吧?

有懂的大神没？？