#include "CH32V20xxx.h"
typedef __SIZE_TYPE__ size_t;
extern "C" {
extern void handle_reset () __attribute__((naked,nothrow,used));
extern void user_prog () __attribute__((used));
extern int main () __attribute__((used));
extern void SystemInit() __attribute__((used));
// This is required to allow pure virtual functions to be defined.
extern void __cxa_pure_virtual() { while (1); }
// These magic symbols are provided by the linker.
extern uint32_t _sbss;
extern uint32_t _ebss;
extern uint32_t _data_lma;
extern uint32_t _data_vma;
extern uint32_t _edata;
extern void (*__preinit_array_start[]) (void) __attribute__((weak));
extern void (*__preinit_array_end[]) (void) __attribute__((weak));
extern void (*__init_array_start[]) (void) __attribute__((weak));
extern void (*__init_array_end[]) (void) __attribute__((weak));
static void __init_array () {
uint32_t * dst, * end;
/* Zero fill the bss section */
dst = &_sbss;
end = &_ebss;
while (dst < end) * dst++ = 0U;
/* Copy data section from flash to RAM */
uint32_t * src;
src = &_data_lma;
dst = &_data_vma;
end = &_edata;
if (src != dst) {
while (dst < end) * dst++ = * src++;
}
size_t count;
/* Pro Cortex-Mx bylo toto zbytečné, lze předpokládat, že je to tak i zde.
count = __preinit_array_end - __preinit_array_start;
for (unsigned i = 0; i < count; i++) __preinit_array_start[i]();
*/
count = __init_array_end - __init_array_start;
for (unsigned i = 0; i < count; i++) __init_array_start[i]();
}
// If you don't override a specific handler, it will just spin forever.
void DefaultIRQHandler( void ) {
// Infinite Loop
for (;;);
}
void NMI_RCC_CSS_IRQHandler( void ) {
RCC.INTR.B.CSSC = RESET; // clear the clock security int flag
}
#define ALIAS(f) __attribute__((nothrow,weak,alias(#f),used))
void Ecall_M_Mode_Handler( void ) ALIAS(DefaultIRQHandler);
void Ecall_U_Mode_Handler( void ) ALIAS(DefaultIRQHandler);
void Break_Point_Handler( void ) ALIAS(DefaultIRQHandler);
void NMI_Handler( void ) ALIAS(NMI_RCC_CSS_IRQHandler);
void HardFault_Handler( void ) ALIAS(DefaultIRQHandler);
void SysTick_Handler( void ) ALIAS(DefaultIRQHandler);
void SW_Handler( void ) ALIAS(DefaultIRQHandler);
void WWDG_IRQHandler (void) ALIAS(DefaultIRQHandler);
void PVD_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TAMPER_IRQHandler (void) ALIAS(DefaultIRQHandler);
void RTC_IRQHandler (void) ALIAS(DefaultIRQHandler);
void FLASH_IRQHandler (void) ALIAS(DefaultIRQHandler);
void RCC_IRQHandler (void) ALIAS(DefaultIRQHandler);
void EXTI0_IRQHandler (void) ALIAS(DefaultIRQHandler);
void EXTI1_IRQHandler (void) ALIAS(DefaultIRQHandler);
void EXTI2_IRQHandler (void) ALIAS(DefaultIRQHandler);
void EXTI3_IRQHandler (void) ALIAS(DefaultIRQHandler);
void EXTI4_IRQHandler (void) ALIAS(DefaultIRQHandler);
void DMA1_Channel1_IRQHandler (void) ALIAS(DefaultIRQHandler);
void DMA1_Channel2_IRQHandler (void) ALIAS(DefaultIRQHandler);
void DMA1_Channel3_IRQHandler (void) ALIAS(DefaultIRQHandler);
void DMA1_Channel4_IRQHandler (void) ALIAS(DefaultIRQHandler);
void DMA1_Channel5_IRQHandler (void) ALIAS(DefaultIRQHandler);
void DMA1_Channel6_IRQHandler (void) ALIAS(DefaultIRQHandler);
void DMA1_Channel7_IRQHandler (void) ALIAS(DefaultIRQHandler);
void DMA1_Channel8_IRQHandler (void) ALIAS(DefaultIRQHandler);
void ADC1_2_IRQHandler (void) ALIAS(DefaultIRQHandler);
void USB_HP_CAN1_TX_IRQHandler (void) ALIAS(DefaultIRQHandler);
void USB_LP_CAN1_RX0_IRQHandler (void) ALIAS(DefaultIRQHandler);
void CAN1_RX1_IRQHandler (void) ALIAS(DefaultIRQHandler);
void CAN1_SCE_IRQHandler (void) ALIAS(DefaultIRQHandler);
void EXTI9_5_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM1_BRK_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM1_UP_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM1_TRG_COM_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM1_CC_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM2_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM3_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM4_IRQHandler (void) ALIAS(DefaultIRQHandler);
void I2C1_EV_IRQHandler (void) ALIAS(DefaultIRQHandler);
void I2C1_ER_IRQHandler (void) ALIAS(DefaultIRQHandler);
void I2C2_EV_IRQHandler (void) ALIAS(DefaultIRQHandler);
void I2C2_ER_IRQHandler (void) ALIAS(DefaultIRQHandler);
void SPI1_IRQHandler (void) ALIAS(DefaultIRQHandler);
void SPI2_IRQHandler (void) ALIAS(DefaultIRQHandler);
void USART1_IRQHandler (void) ALIAS(DefaultIRQHandler);
void USART2_IRQHandler (void) ALIAS(DefaultIRQHandler);
void USART3_IRQHandler (void) ALIAS(DefaultIRQHandler);
void EXTI15_10_IRQHandler (void) ALIAS(DefaultIRQHandler);
void RTCAlarm_IRQHandler (void) ALIAS(DefaultIRQHandler);
void USBWakeUp_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM8_BRK_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM8_UP__IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM8_TRG_COM_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM8_CC_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM5_IRQHandler (void) ALIAS(DefaultIRQHandler);
void SPI3_IRQHandler (void) ALIAS(DefaultIRQHandler);
void UART4_IRQHandler (void) ALIAS(DefaultIRQHandler);
void UART5_IRQHandler (void) ALIAS(DefaultIRQHandler);
void ETH_IRQHandler (void) ALIAS(DefaultIRQHandler);
void ETH_WKUP_IRQHandler (void) ALIAS(DefaultIRQHandler);
void OTG_FS_IRQHandler (void) ALIAS(DefaultIRQHandler);
void USBHDWakeUp_IRQHandler (void) ALIAS(DefaultIRQHandler);
void USBHD_IRQHandler (void) ALIAS(DefaultIRQHandler);
void UART6_IRQHandler (void) ALIAS(DefaultIRQHandler);
void UART7_IRQHandler (void) ALIAS(DefaultIRQHandler);
void UART8_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM9_BRK_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM9_UP__IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM9_TRG_COM_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM9_CC_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM10_BRK_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM10_UP__IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM10_TRG_COM_IRQHandler (void) ALIAS(DefaultIRQHandler);
void TIM10_CC_IRQHandler (void) ALIAS(DefaultIRQHandler);
void ETHWakeUp_IRQHandler( void ) ALIAS(DefaultIRQHandler);
void OSC32KCal_IRQHandler( void ) ALIAS(DefaultIRQHandler);
void OSCWakeUp_IRQHandler( void ) ALIAS(DefaultIRQHandler);
void Init() __attribute__((used,section(".init")));
/* Tohle je patrně nedomyšlené, sekce .vector není definována.
void InterruptVector() __attribute__((nothrow,naked,section(".vector"),weak,alias("InterruptVectorDefault")));
void InterruptVectorDefault() __attribute__((nothrow,naked,section(".vector")));
*/
typedef void (*pHandler) (void);
extern const pHandler InterruptVector [] __attribute__((section(".text.vector"),aligned(8)));
};
const pHandler InterruptVector [] = {
Init,
0,
NMI_Handler, /* NMI */
HardFault_Handler, /* Hard Fault */
0,
Ecall_M_Mode_Handler, /* Ecall M Mode */
0,0,
Ecall_U_Mode_Handler, /* Ecall U Mode */
Break_Point_Handler, /* Break Point */
0,0,
SysTick_Handler, /* SysTick Handler */
0,
SW_Handler, /* SW Handler */
0,
/* External Interrupts */
WWDG_IRQHandler, /* Window Watchdog */
PVD_IRQHandler, /* PVD through EXTI Line detect */
TAMPER_IRQHandler, /* TAMPER */
RTC_IRQHandler, /* RTC */
FLASH_IRQHandler, /* Flash */
RCC_IRQHandler, /* RCC */
EXTI0_IRQHandler, /* EXTI Line 0 */
EXTI1_IRQHandler, /* EXTI Line 1 */
EXTI2_IRQHandler, /* EXTI Line 2 */
EXTI3_IRQHandler, /* EXTI Line 3 */
EXTI4_IRQHandler, /* EXTI Line 4 */
DMA1_Channel1_IRQHandler, /* DMA1 Channel 1 */
DMA1_Channel2_IRQHandler, /* DMA1 Channel 2 */
DMA1_Channel3_IRQHandler, /* DMA1 Channel 3 */
DMA1_Channel4_IRQHandler, /* DMA1 Channel 4 */
DMA1_Channel5_IRQHandler, /* DMA1 Channel 5 */
DMA1_Channel6_IRQHandler, /* DMA1 Channel 6 */
DMA1_Channel7_IRQHandler, /* DMA1 Channel 7 */
ADC1_2_IRQHandler, /* ADC1_2 */
USB_HP_CAN1_TX_IRQHandler, /* USB HP and CAN1 TX */
USB_LP_CAN1_RX0_IRQHandler, /* USB LP and CAN1RX0 */
CAN1_RX1_IRQHandler, /* CAN1 RX1 */
CAN1_SCE_IRQHandler, /* CAN1 SCE */
EXTI9_5_IRQHandler, /* EXTI Line 9..5 */
TIM1_BRK_IRQHandler, /* TIM1 Break */
TIM1_UP_IRQHandler, /* TIM1 Update */
TIM1_TRG_COM_IRQHandler, /* TIM1 Trigger and Commutation */
TIM1_CC_IRQHandler, /* TIM1 Capture Compare */
TIM2_IRQHandler, /* TIM2 */
TIM3_IRQHandler, /* TIM3 */
TIM4_IRQHandler, /* TIM4 */
I2C1_EV_IRQHandler, /* I2C1 Event */
I2C1_ER_IRQHandler, /* I2C1 Error */
I2C2_EV_IRQHandler, /* I2C2 Event */
I2C2_ER_IRQHandler, /* I2C2 Error */
SPI1_IRQHandler, /* SPI1 */
SPI2_IRQHandler, /* SPI2 */
USART1_IRQHandler, /* USART1 */
USART2_IRQHandler, /* USART2 */
USART3_IRQHandler, /* USART3 */
EXTI15_10_IRQHandler, /* EXTI Line 15..10 */
RTCAlarm_IRQHandler, /* RTC Alarm through EXTI Line */
USBWakeUp_IRQHandler, /* USB Wake up from suspend */
USBHD_IRQHandler, /* USBHD Break */
USBHDWakeUp_IRQHandler, /* USBHD Wake up from suspend */
ETH_IRQHandler, /* ETH global */
ETHWakeUp_IRQHandler, /* ETH Wake up */
0, /* BLE BB */
0, /* BLE LLE */
TIM5_IRQHandler, /* TIM5 */
UART4_IRQHandler, /* UART4 */
DMA1_Channel8_IRQHandler, /* DMA1 Channel8 */
OSC32KCal_IRQHandler, /* OSC32KCal */
OSCWakeUp_IRQHandler, /* OSC Wake Up */
};
#if 0
void InterruptVectorDefault() noexcept {
asm volatile( R"---(
.align 1
.option norvc;
.word Init
.word 0
.word NMI_Handler /* NMI */
.word HardFault_Handler /* Hard Fault */
.word 0
.word Ecall_M_Mode_Handler /* Ecall M Mode */
.word 0
.word 0
.word Ecall_U_Mode_Handler /* Ecall U Mode */
.word Break_Point_Handler /* Break Point */
.word 0
.word 0
.word SysTick_Handler /* SysTick Handler */
.word 0
.word SW_Handler /* SW Handler */
.word 0
/* External Interrupts */
.word WWDG_IRQHandler /* Window Watchdog */
.word PVD_IRQHandler /* PVD through EXTI Line detect */
.word TAMPER_IRQHandler /* TAMPER */
.word RTC_IRQHandler /* RTC */
.word FLASH_IRQHandler /* Flash */
.word RCC_IRQHandler /* RCC */
.word EXTI0_IRQHandler /* EXTI Line 0 */
.word EXTI1_IRQHandler /* EXTI Line 1 */
.word EXTI2_IRQHandler /* EXTI Line 2 */
.word EXTI3_IRQHandler /* EXTI Line 3 */
.word EXTI4_IRQHandler /* EXTI Line 4 */
.word DMA1_Channel1_IRQHandler /* DMA1 Channel 1 */
.word DMA1_Channel2_IRQHandler /* DMA1 Channel 2 */
.word DMA1_Channel3_IRQHandler /* DMA1 Channel 3 */
.word DMA1_Channel4_IRQHandler /* DMA1 Channel 4 */
.word DMA1_Channel5_IRQHandler /* DMA1 Channel 5 */
.word DMA1_Channel6_IRQHandler /* DMA1 Channel 6 */
.word DMA1_Channel7_IRQHandler /* DMA1 Channel 7 */
.word ADC1_2_IRQHandler /* ADC1_2 */
.word USB_HP_CAN1_TX_IRQHandler /* USB HP and CAN1 TX */
.word USB_LP_CAN1_RX0_IRQHandler /* USB LP and CAN1RX0 */
.word CAN1_RX1_IRQHandler /* CAN1 RX1 */
.word CAN1_SCE_IRQHandler /* CAN1 SCE */
.word EXTI9_5_IRQHandler /* EXTI Line 9..5 */
.word TIM1_BRK_IRQHandler /* TIM1 Break */
.word TIM1_UP_IRQHandler /* TIM1 Update */
.word TIM1_TRG_COM_IRQHandler /* TIM1 Trigger and Commutation */
.word TIM1_CC_IRQHandler /* TIM1 Capture Compare */
.word TIM2_IRQHandler /* TIM2 */
.word TIM3_IRQHandler /* TIM3 */
.word TIM4_IRQHandler /* TIM4 */
.word I2C1_EV_IRQHandler /* I2C1 Event */
.word I2C1_ER_IRQHandler /* I2C1 Error */
.word I2C2_EV_IRQHandler /* I2C2 Event */
.word I2C2_ER_IRQHandler /* I2C2 Error */
.word SPI1_IRQHandler /* SPI1 */
.word SPI2_IRQHandler /* SPI2 */
.word USART1_IRQHandler /* USART1 */
.word USART2_IRQHandler /* USART2 */
.word USART3_IRQHandler /* USART3 */
.word EXTI15_10_IRQHandler /* EXTI Line 15..10 */
.word RTCAlarm_IRQHandler /* RTC Alarm through EXTI Line */
.word USBWakeUp_IRQHandler /* USB Wake up from suspend */
.word USBHD_IRQHandler /* USBHD Break */
.word USBHDWakeUp_IRQHandler /* USBHD Wake up from suspend */
.word ETH_IRQHandler /* ETH global */
.word ETHWakeUp_IRQHandler /* ETH Wake up */
.word 0 /* BLE BB */
.word 0 /* BLE LLE */
.word TIM5_IRQHandler /* TIM5 */
.word UART4_IRQHandler /* UART4 */
.word DMA1_Channel8_IRQHandler /* DMA1 Channel8 */
.word OSC32KCal_IRQHandler /* OSC32KCal */
.word OSCWakeUp_IRQHandler /* OSC Wake Up */
)---");
}
#endif
void Init() {
asm volatile( R"---(
.align 1
_start:
j handle_reset
.rept 12
.word 0x00000013
.endr
.word 0x00100073
)---");
}
void handle_reset() noexcept {
asm volatile(R"---(
.option push
.option norelax
la gp, __global_pointer$
.option pop
la sp, _eusrstack
)---"
#if __GNUC__ > 10
".option arch, +zicsr\n"
#endif
// Setup the interrupt vector, processor status and INTSYSCR.
R"---(
li t0, 0x1f
csrw 0xbc0, t0
/* Enabled nested and hardware stack */
li t0, 0x88
csrs mstatus, t0
la t0, InterruptVector
ori t0, t0, 3
csrw mtvec, t0
/* Takhle RISC-V přejde do uživatelského programu. */
csrw mepc, %[user]
mret
)---"
: : [user]"r"(user_prog)/*, "InterruptVector" (InterruptVector)*/
: "t0", "memory" );
}
void user_prog () {
SystemInit ();
__init_array();
main();
for (;;);
}