stm8s jumps out of the interrupt program c language, STVD automatically generates stm8

I'll sort it out, I don't know if I understand it correctly;

/* BASIC INTERRUPT VECTOR TABLE FOR STM8 devices

* Copyright (c) 2007 STMicroelectronics

*/

//typedef void (*)void,; define a type (pointer to function) to get the function entry address pointer of void type function

typedef void @far (*interrupt_handler_t)(void);

//Define a structure type to store {interrupt instruction, interrupt handler name (i.e. interrupt function entry pointer)}

struct interrupt_vector {

unsigned char interrupt_instruction;

interrupt_handler_t interrupt_handler;

};

//Define an empty interrupt function and return directly to the main function after execution

@far @interrupt void NonHandledInterrupt (void)

{

/* in order to detect unexpected events during development,

it is recommended to set a breakpoint on the following instruction

*/

return;

}

//Declare the startup initialization program, the _stext() program is defined elsewhere

extern void _stext(); /* startup routine */

//Define a two-dimensional array to store interrupt instructions and interrupt function entry address pointers in pairs,

//MCU executes 0x82 instruction to "jump" to the corresponding interrupt program entry address according to the second subscript value [2,32]

//The array is stored at the starting address 0x8000 marked by the const key value, that is, _vectab represents the starting address 0x8000

//1, struct interrupt_vector const _vectab[]={}

//2, +seg .const -b 0x8000 -k

//CALL is paired with RET, and this 0x82 instruction is paired with IRET

struct interrupt_vector const _vectab[] = {

//Force _stext to interrupt_handler_t type

{0x82, (interrupt_handler_t)_stext}, /* reset */

{0x82, NonHandledInterrupt}, /* trap */

{0x82, NonHandledInterrupt}, /* irq0 */

{0x82, NonHandledInterrupt}, /* irq1 */

{0x82, NonHandledInterrupt}, /* irq2 */

{0x82, NonHandledInterrupt}, /* irq3 */

{0x82, NonHandledInterrupt}, /* irq4 */

{0x82, NonHandledInterrupt}, /* irq5 */

{0x82, NonHandledInterrupt}, /* irq6 */

{0x82, NonHandledInterrupt}, /* irq7 */

{0x82, NonHandledInterrupt}, /* irq8 */

{0x82, NonHandledInterrupt}, /* irq9 */

{0x82, NonHandledInterrupt}, /* irq10 */

{0x82, NonHandledInterrupt}, /* irq11 */

{0x82, NonHandledInterrupt}, /* irq12 */

{0x82, NonHandledInterrupt}, /* irq13 */

{0x82, NonHandledInterrupt}, /* irq14 */

{0x82, NonHandledInterrupt}, /* irq15 */

{0x82, NonHandledInterrupt}, /* irq16 */

{0x82, NonHandledInterrupt}, /* irq17 */

{0x82, NonHandledInterrupt}, /* irq18 */

{0x82, NonHandledInterrupt}, /* irq19 */

{0x82, NonHandledInterrupt}, /* irq20 */

{0x82, NonHandledInterrupt}, /* irq21 */

{0x82, NonHandledInterrupt}, /* irq22 */

{0x82, NonHandledInterrupt}, /* irq23 */

{0x82, NonHandledInterrupt}, /* irq24 */

{0x82, NonHandledInterrupt}, /* irq25 */

{0x82, NonHandledInterrupt}, /* irq26 */

{0x82, NonHandledInterrupt}, /* irq27 */

{0x82, NonHandledInterrupt}, /* irq28 */

{0x82, NonHandledInterrupt}, /* irq29 */

};