[add] 打印index

Middlewares/MCoreDump/rtthread_port.c

             /* If this is the current thread, use current stack pointer */
             if (idx_l == current_idx)
             {
+                uint32_t fpu_flag = 0;
                 addr = (rt_uint32_t)get_cur_core_regset_address()->sp;      // 异常中填充
                 memlen = (rt_uint32_t)thread->stack_addr + thread->stack_size - (rt_uint32_t)thread->sp;
                 addr -= STACK_CORE_REG_SIZE; // 异常中断里面已经压栈了但还没更新tcb里面的sp指针
                 memlen += STACK_CORE_REG_SIZE * 2; // 前后括大两倍：实际可能更多局部变量在死机前还没来得及向下增长sp
 #if MCD_FPU_SUPPORT
                 /* Read FPU flag first - indicates if FPU context was saved */
-                uint32_t fpu_flag = *(uint32_t *)thread->sp;
+                fpu_flag = *(uint32_t *)thread->sp;
                 addr -= 1;
                 memlen += 1;
 
                     memlen = thread->stack_size;
                 }
 
+                mcd_print("Thread index:%d (fpu:%d)\n", idx_l + 1, fpu_flag);
                 print_registers((void *)get_cur_core_regset_address(), get_cur_fp_regset_address(), thread->name);
                 addr2line_cmd_with_pc_print((rt_uint32_t *)get_cur_core_regset_address()->pc, (uint32_t *)addr, memlen);
             }
             else
             {
+                mcd_print("Thread index:%d\n", idx_l + 1);
                 addr = (rt_uint32_t)thread->sp;
                 memlen = (rt_uint32_t)thread->stack_addr + thread->stack_size - (rt_uint32_t)thread->sp;
                 core_regset_type core_regset;