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