[英]Hardfault handling - Arm Cortex-M0
I'm having some difficulty creating a hard fault handler for the NRF51 which has an ARM CortexM0. 我在为具有ARM CortexM0的NRF51创建硬故障处理程序时遇到了一些困难。
(note: the following code has been combined from different sources on the internet) Here's what I have so far: (注意:以下代码是从互联网上的不同来源合并而成的)到目前为止,这是我得到的:
static void hard_fault_handler_c(unsigned int * hardfault_args)
{
unsigned int stacked_r0;
unsigned int stacked_r1;
unsigned int stacked_r2;
unsigned int stacked_r3;
unsigned int stacked_r12;
unsigned int stacked_lr;
unsigned int stacked_pc;
unsigned int stacked_psr;
stacked_r0 = ((unsigned long) hardfault_args[0]);
stacked_r1 = ((unsigned long) hardfault_args[1]);
stacked_r2 = ((unsigned long) hardfault_args[2]);
stacked_r3 = ((unsigned long) hardfault_args[3]);
stacked_r12 = ((unsigned long) hardfault_args[4]);
stacked_lr = ((unsigned long) hardfault_args[5]);
stacked_pc = ((unsigned long) hardfault_args[6]);
stacked_psr = ((unsigned long) hardfault_args[7]);
for(;;);
}
void HardFault_Handler(void)
{
asm volatile(
"movs r0, #4\t\n"
"mov r1, lr\t\n"
"tst r0, r1\t\n" /* Check EXC_RETURN[2] */
"beq 1f\t\n"
"mrs r0, psp\t\n"
"ldr r1,=hard_fault_handler_c\t\n"
"bx r1\t\n"
"1:mrs r0,msp\t\n"
"ldr r1,=hard_fault_handler_c\t\n"
: /* no output */
: /* no input */
: "r0" /* clobber */
);
}
The error during compilation is the following: Building target: project.elf Invoking: Cross ARM C++ Linker C:\\Users\\Steven\\AppData\\Local\\Temp\\ccuAgDyP.ltrans9.ltrans.o: In function HardFault_Handler': <artificial>:(.text.HardFault_Handler+0x18): undefined reference to
hard_fault_handler_c' collect2.exe: error: ld returned 1 exit status make: *** [FruityMesh.elf] Error 1 makefile:65: recipe for target 'project.elf' failed 编译期间的错误如下:生成目标:project.elf调用:跨ARM C ++链接器C:\\ Users \\ Steven \\ AppData \\ Local \\ Temp \\ ccuAgDyP.ltrans9.ltrans.o:在函数
HardFault_Handler': <artificial>:(.text.HardFault_Handler+0x18): undefined reference to
hard_fault_handler_c'collect2.exe的引用:错误:ld返回1退出状态make:*** [FruityMesh.elf]错误1 makefile:65:目标'project.elf'的配方失败
In summary, it looks like the linker is having trouble finding the address for hard_fault_handler_c function. 总而言之,链接器似乎无法找到hard_fault_handler_c函数的地址。 I would think that i would need to write assembly to import or include the path to this function but, this is just my suggestion.
我认为我需要编写汇编程序来导入或包含此函数的路径,但这只是我的建议。 I haven't been able to write assembly for the M0 that compiles to do so.
我无法为编译后的M0编写程序集。
Thank you 谢谢
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