circuitpython/ports/stm32/boards/startup_stm32l4.s

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/**
******************************************************************************
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* @file startup_stm32l496xx.s
* @author MCD Application Team
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* @brief STM32L496xx devices vector table GCC toolchain.
* This module performs:
* - Set the initial SP
* - Set the initial PC == Reset_Handler,
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* - Set the vector table entries with the exceptions ISR address,
* - Branches to main in the C library (which eventually
* calls main()).
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* After Reset the Cortex-M4 processor is in Thread mode,
* priority is Privileged, and the Stack is set to Main.
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* Taken from STM32L4 template code for stm32l496 in STM32Cube_FW_L4_V1.11.0
******************************************************************************
* @attention
*
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* <h2><center>&copy; COPYRIGHT 2017 STMicroelectronics</center></h2>
*
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* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
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* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
.syntax unified
.cpu cortex-m4
.fpu softvfp
.thumb
.global g_pfnVectors
.global Default_Handler
/* start address for the initialization values of the .data section.
defined in linker script */
.word _sidata
/* start address for the .data section. defined in linker script */
.word _sdata
/* end address for the .data section. defined in linker script */
.word _edata
/* start address for the .bss section. defined in linker script */
.word _sbss
/* end address for the .bss section. defined in linker script */
.word _ebss
/* stack used for SystemInit_ExtMemCtl; always internal RAM used */
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.equ BootRAM, 0xF1E0F85F
/**
* @brief This is the code that gets called when the processor first
* starts execution following a reset event. Only the absolutely
* necessary set is performed, after which the application
* supplied main() routine is called.
* @param None
* @retval : None
*/
.section .text.Reset_Handler
.weak Reset_Handler
.type Reset_Handler, %function
Reset_Handler:
ldr sp, =_estack /* set stack pointer */
/* Copy the data segment initializers from flash to SRAM */
movs r1, #0
b LoopCopyDataInit
CopyDataInit:
ldr r3, =_sidata
ldr r3, [r3, r1]
str r3, [r0, r1]
adds r1, r1, #4
LoopCopyDataInit:
ldr r0, =_sdata
ldr r3, =_edata
adds r2, r0, r1
cmp r2, r3
bcc CopyDataInit
ldr r2, =_sbss
b LoopFillZerobss
/* Zero fill the bss segment. */
FillZerobss:
movs r3, #0
str r3, [r2], #4
LoopFillZerobss:
ldr r3, = _ebss
cmp r2, r3
bcc FillZerobss
/* Call the clock system initialization function.*/
bl SystemInit
/* Call static constructors */
/*bl __libc_init_array*/
/* Call the application's entry point.*/
bl main
bx lr
.size Reset_Handler, .-Reset_Handler
/**
* @brief This is the code that gets called when the processor receives an
* unexpected interrupt. This simply enters an infinite loop, preserving
* the system state for examination by a debugger.
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*
* @param None
* @retval None
*/
.section .text.Default_Handler,"ax",%progbits
Default_Handler:
Infinite_Loop:
b Infinite_Loop
.size Default_Handler, .-Default_Handler
/******************************************************************************
*
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* The minimal vector table for a Cortex-M4. Note that the proper constructs
* must be placed on this to ensure that it ends up at physical address
* 0x0000.0000.
*
*******************************************************************************/
.section .isr_vector,"a",%progbits
.type g_pfnVectors, %object
.size g_pfnVectors, .-g_pfnVectors
g_pfnVectors:
.word _estack
.word Reset_Handler
.word NMI_Handler
.word HardFault_Handler
.word MemManage_Handler
.word BusFault_Handler
.word UsageFault_Handler
.word 0
.word 0
.word 0
.word 0
.word SVC_Handler
.word DebugMon_Handler
.word 0
.word PendSV_Handler
.word SysTick_Handler
/* External Interrupts */
.word WWDG_IRQHandler /* Window WatchDog */
.word PVD_PVM_IRQHandler /* PVD and PVM through EXTI line detection */
.word TAMP_STAMP_IRQHandler /* Tamper and TimeStamps through the EXTI line */
.word RTC_WKUP_IRQHandler /* RTC Wakeup through the EXTI line */
.word FLASH_IRQHandler /* FLASH */
.word RCC_IRQHandler /* RCC */
.word EXTI0_IRQHandler /* EXTI Line0 */
.word EXTI1_IRQHandler /* EXTI Line1 */
.word EXTI2_IRQHandler /* EXTI Line2 */
.word EXTI3_IRQHandler /* EXTI Line3 */
.word EXTI4_IRQHandler /* EXTI Line4 */
.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 and ADC2 */
.word CAN1_TX_IRQHandler /* CAN1 TX */
.word CAN1_RX0_IRQHandler /* CAN1 RX0 */
.word CAN1_RX1_IRQHandler /* CAN1 RX1 */
.word CAN1_SCE_IRQHandler /* CAN1 SCE */
.word EXTI9_5_IRQHandler /* External Line[9:5]s */
.word TIM1_BRK_TIM15_IRQHandler /* TIM1 Break and TIM15 */
.word TIM1_UP_TIM16_IRQHandler /* TIM1 Update and TIM16 */
.word TIM1_TRG_COM_TIM17_IRQHandler /* TIM1 Trigger and Commutation and TIM17 */
.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 /* External Line[15:10]s */
.word RTC_Alarm_IRQHandler /* RTC Alarm (A and B) through EXTI Line */
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.word DFSDM1_FLT3_IRQHandler /* Digital filter 3 for sigma delta modulator */
.word TIM8_BRK_IRQHandler /* TIM8 Break */
.word TIM8_UP_IRQHandler /* TIM8 Update */
.word TIM8_TRG_COM_IRQHandler /* TIM8 Trigger and Commutation */
.word TIM8_CC_IRQHandler /* TIM8 Capture Compare */
.word ADC3_IRQHandler /* ADC3 global interrupt */
.word FMC_IRQHandler /* FMC */
.word SDMMC1_IRQHandler /* SDMMC1 */
.word TIM5_IRQHandler /* TIM5 */
.word SPI3_IRQHandler /* SPI3 */
.word UART4_IRQHandler /* UART4 */
.word UART5_IRQHandler /* UART5 */
.word TIM6_DAC_IRQHandler /* TIM6 and DAC1&2 underrun errors */
.word TIM7_IRQHandler /* TIM7 */
.word DMA2_Channel1_IRQHandler /* DMA2 Channel 1 */
.word DMA2_Channel2_IRQHandler /* DMA2 Channel 2 */
.word DMA2_Channel3_IRQHandler /* DMA2 Channel 3 */
.word DMA2_Channel4_IRQHandler /* DMA2 Channel 4 */
.word DMA2_Channel5_IRQHandler /* DMA2 Channel 5 */
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.word DFSDM1_FLT0_IRQHandler /* Digital filter 0 for sigma delta modulator */
.word DFSDM1_FLT1_IRQHandler /* Digital filter 1 for sigma delta modulator */
.word DFSDM1_FLT2_IRQHandler /* Digital filter 2 for sigma delta modulator */
.word COMP_IRQHandler /* Comporator thru EXTI line */
.word LPTIM1_IRQHandler /* Low power timer 1 */
.word LPTIM2_IRQHandler /* Low power timer 2 */
.word OTG_FS_IRQHandler /* USB OTG FS */
.word DMA2_Channel6_IRQHandler /* DMA2 Channel 6 */
.word DMA2_Channel7_IRQHandler /* DMA2 Channel 7 */
.word LPUART1_IRQHandler /* Low power UART */
.word QUADSPI_IRQHandler /* Quad SPI */
.word I2C3_EV_IRQHandler /* I2C3 event */
.word I2C3_ER_IRQHandler /* I2C3 error */
.word SAI1_IRQHandler /* Serial audio interface 1 */
.word SAI2_IRQHandler /* Serial audio interface 2 */
.word SWPMI1_IRQHandler /* Single wire protocole 1 */
.word TSC_IRQHandler /* Touch sensig controller */
.word LCD_IRQHandler /* LCD */
.word 0 /* CRYP crypto */
.word RNG_IRQHandler /* Random number generator */
.word FPU_IRQHandler /* FPU */
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/* Following Handlers are only used on L496/4A6xx devices */
.word CRS_IRQHandler /* HASH and CRS interrupt */
.word I2C4_EV_IRQHandler /* I2C4 event interrupt */
.word I2C4_ER_IRQHandler /* I2C4 error interrupt */
.word DCMI_IRQHandler /* DCMI global interrupt */
.word CAN2_TX_IRQHandler /* CAN2 TX interrupt */
.word CAN2_RX0_IRQHandler /* CAN2 RX0 interrupt */
.word CAN2_RX1_IRQHandler /* CAN2 RX1 interrupt */
.word CAN2_SCE_IRQHandler /* CAN SCE interrupt */
.word DMA2D_IRQHandler /* DMA2D global interrupt */
/*******************************************************************************
*
* Provide weak aliases for each Exception handler to the Default_Handler.
* As they are weak aliases, any function with the same name will override
* this definition.
*
*******************************************************************************/
.weak NMI_Handler
.thumb_set NMI_Handler,Default_Handler
.weak HardFault_Handler
.thumb_set HardFault_Handler,Default_Handler
.weak MemManage_Handler
.thumb_set MemManage_Handler,Default_Handler
.weak BusFault_Handler
.thumb_set BusFault_Handler,Default_Handler
.weak UsageFault_Handler
.thumb_set UsageFault_Handler,Default_Handler
.weak SVC_Handler
.thumb_set SVC_Handler,Default_Handler
.weak DebugMon_Handler
.thumb_set DebugMon_Handler,Default_Handler
.weak PendSV_Handler
.thumb_set PendSV_Handler,Default_Handler
.weak SysTick_Handler
.thumb_set SysTick_Handler,Default_Handler
.weak WWDG_IRQHandler
.thumb_set WWDG_IRQHandler,Default_Handler
.weak PVD_PVM_IRQHandler
.thumb_set PVD_PVM_IRQHandler,Default_Handler
.weak TAMP_STAMP_IRQHandler
.thumb_set TAMP_STAMP_IRQHandler,Default_Handler
.weak RTC_WKUP_IRQHandler
.thumb_set RTC_WKUP_IRQHandler,Default_Handler
.weak FLASH_IRQHandler
.thumb_set FLASH_IRQHandler,Default_Handler
.weak RCC_IRQHandler
.thumb_set RCC_IRQHandler,Default_Handler
.weak EXTI0_IRQHandler
.thumb_set EXTI0_IRQHandler,Default_Handler
.weak EXTI1_IRQHandler
.thumb_set EXTI1_IRQHandler,Default_Handler
.weak EXTI2_IRQHandler
.thumb_set EXTI2_IRQHandler,Default_Handler
.weak EXTI3_IRQHandler
.thumb_set EXTI3_IRQHandler,Default_Handler
.weak EXTI4_IRQHandler
.thumb_set EXTI4_IRQHandler,Default_Handler
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.weak DMA1_Channel1_IRQHandler
.thumb_set DMA1_Channel1_IRQHandler,Default_Handler
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.weak DMA1_Channel2_IRQHandler
.thumb_set DMA1_Channel2_IRQHandler,Default_Handler
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.weak DMA1_Channel3_IRQHandler
.thumb_set DMA1_Channel3_IRQHandler,Default_Handler
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.weak DMA1_Channel4_IRQHandler
.thumb_set DMA1_Channel4_IRQHandler,Default_Handler
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.weak DMA1_Channel5_IRQHandler
.thumb_set DMA1_Channel5_IRQHandler,Default_Handler
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.weak DMA1_Channel6_IRQHandler
.thumb_set DMA1_Channel6_IRQHandler,Default_Handler
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.weak DMA1_Channel7_IRQHandler
.thumb_set DMA1_Channel7_IRQHandler,Default_Handler
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.weak ADC1_2_IRQHandler
.thumb_set ADC1_2_IRQHandler,Default_Handler
.weak CAN1_TX_IRQHandler
.thumb_set CAN1_TX_IRQHandler,Default_Handler
.weak CAN1_RX0_IRQHandler
.thumb_set CAN1_RX0_IRQHandler,Default_Handler
.weak CAN1_RX1_IRQHandler
.thumb_set CAN1_RX1_IRQHandler,Default_Handler
.weak CAN1_SCE_IRQHandler
.thumb_set CAN1_SCE_IRQHandler,Default_Handler
.weak EXTI9_5_IRQHandler
.thumb_set EXTI9_5_IRQHandler,Default_Handler
.weak TIM1_BRK_TIM15_IRQHandler
.thumb_set TIM1_BRK_TIM15_IRQHandler,Default_Handler
.weak TIM1_UP_TIM16_IRQHandler
.thumb_set TIM1_UP_TIM16_IRQHandler,Default_Handler
.weak TIM1_TRG_COM_TIM17_IRQHandler
.thumb_set TIM1_TRG_COM_TIM17_IRQHandler,Default_Handler
.weak TIM1_CC_IRQHandler
.thumb_set TIM1_CC_IRQHandler,Default_Handler
.weak TIM2_IRQHandler
.thumb_set TIM2_IRQHandler,Default_Handler
.weak TIM3_IRQHandler
.thumb_set TIM3_IRQHandler,Default_Handler
.weak TIM4_IRQHandler
.thumb_set TIM4_IRQHandler,Default_Handler
.weak I2C1_EV_IRQHandler
.thumb_set I2C1_EV_IRQHandler,Default_Handler
.weak I2C1_ER_IRQHandler
.thumb_set I2C1_ER_IRQHandler,Default_Handler
.weak I2C2_EV_IRQHandler
.thumb_set I2C2_EV_IRQHandler,Default_Handler
.weak I2C2_ER_IRQHandler
.thumb_set I2C2_ER_IRQHandler,Default_Handler
.weak SPI1_IRQHandler
.thumb_set SPI1_IRQHandler,Default_Handler
.weak SPI2_IRQHandler
.thumb_set SPI2_IRQHandler,Default_Handler
.weak USART1_IRQHandler
.thumb_set USART1_IRQHandler,Default_Handler
.weak USART2_IRQHandler
.thumb_set USART2_IRQHandler,Default_Handler
.weak USART3_IRQHandler
.thumb_set USART3_IRQHandler,Default_Handler
.weak EXTI15_10_IRQHandler
.thumb_set EXTI15_10_IRQHandler,Default_Handler
.weak RTC_Alarm_IRQHandler
.thumb_set RTC_Alarm_IRQHandler,Default_Handler
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.weak DFSDM1_FLT3_IRQHandler
.thumb_set DFSDM1_FLT3_IRQHandler,Default_Handler
.weak TIM8_BRK_IRQHandler
.thumb_set TIM8_BRK_IRQHandler,Default_Handler
.weak TIM8_UP_IRQHandler
.thumb_set TIM8_UP_IRQHandler,Default_Handler
.weak TIM8_TRG_COM_IRQHandler
.thumb_set TIM8_TRG_COM_IRQHandler,Default_Handler
.weak TIM8_CC_IRQHandler
.thumb_set TIM8_CC_IRQHandler,Default_Handler
.weak ADC3_IRQHandler
.thumb_set ADC3_IRQHandler,Default_Handler
.weak FMC_IRQHandler
.thumb_set FMC_IRQHandler,Default_Handler
.weak SDMMC1_IRQHandler
.thumb_set SDMMC1_IRQHandler,Default_Handler
.weak TIM5_IRQHandler
.thumb_set TIM5_IRQHandler,Default_Handler
.weak SPI3_IRQHandler
.thumb_set SPI3_IRQHandler,Default_Handler
.weak UART4_IRQHandler
.thumb_set UART4_IRQHandler,Default_Handler
.weak UART5_IRQHandler
.thumb_set UART5_IRQHandler,Default_Handler
.weak TIM6_DAC_IRQHandler
.thumb_set TIM6_DAC_IRQHandler,Default_Handler
.weak TIM7_IRQHandler
.thumb_set TIM7_IRQHandler,Default_Handler
.weak DMA2_Channel1_IRQHandler
.thumb_set DMA2_Channel1_IRQHandler,Default_Handler
.weak DMA2_Channel2_IRQHandler
.thumb_set DMA2_Channel2_IRQHandler,Default_Handler
.weak DMA2_Channel3_IRQHandler
.thumb_set DMA2_Channel3_IRQHandler,Default_Handler
.weak DMA2_Channel4_IRQHandler
.thumb_set DMA2_Channel4_IRQHandler,Default_Handler
.weak DMA2_Channel5_IRQHandler
.thumb_set DMA2_Channel5_IRQHandler,Default_Handler
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.weak DFSDM1_FLT0_IRQHandler
.thumb_set DFSDM1_FLT0_IRQHandler,Default_Handler
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.weak DFSDM1_FLT1_IRQHandler
.thumb_set DFSDM1_FLT1_IRQHandler,Default_Handler
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.weak DFSDM1_FLT2_IRQHandler
.thumb_set DFSDM1_FLT2_IRQHandler,Default_Handler
.weak COMP_IRQHandler
.thumb_set COMP_IRQHandler,Default_Handler
.weak LPTIM1_IRQHandler
.thumb_set LPTIM1_IRQHandler,Default_Handler
.weak LPTIM2_IRQHandler
.thumb_set LPTIM2_IRQHandler,Default_Handler
.weak OTG_FS_IRQHandler
.thumb_set OTG_FS_IRQHandler,Default_Handler
.weak DMA2_Channel6_IRQHandler
.thumb_set DMA2_Channel6_IRQHandler,Default_Handler
.weak DMA2_Channel7_IRQHandler
.thumb_set DMA2_Channel7_IRQHandler,Default_Handler
.weak LPUART1_IRQHandler
.thumb_set LPUART1_IRQHandler,Default_Handler
.weak QUADSPI_IRQHandler
.thumb_set QUADSPI_IRQHandler,Default_Handler
.weak I2C3_EV_IRQHandler
.thumb_set I2C3_EV_IRQHandler,Default_Handler
.weak I2C3_ER_IRQHandler
.thumb_set I2C3_ER_IRQHandler,Default_Handler
.weak SAI1_IRQHandler
.thumb_set SAI1_IRQHandler,Default_Handler
.weak SAI2_IRQHandler
.thumb_set SAI2_IRQHandler,Default_Handler
.weak SWPMI1_IRQHandler
.thumb_set SWPMI1_IRQHandler,Default_Handler
.weak TSC_IRQHandler
.thumb_set TSC_IRQHandler,Default_Handler
.weak LCD_IRQHandler
.thumb_set LCD_IRQHandler,Default_Handler
.weak RNG_IRQHandler
.thumb_set RNG_IRQHandler,Default_Handler
.weak FPU_IRQHandler
.thumb_set FPU_IRQHandler,Default_Handler
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.weak CRS_IRQHandler
.thumb_set CRS_IRQHandler,Default_Handler
.weak I2C4_EV_IRQHandler
.thumb_set I2C4_EV_IRQHandler,Default_Handler
.weak I2C4_ER_IRQHandler
.thumb_set I2C4_ER_IRQHandler,Default_Handler
.weak DCMI_IRQHandler
.thumb_set DCMI_IRQHandler,Default_Handler
.weak CAN2_TX_IRQHandler
.thumb_set CAN2_TX_IRQHandler,Default_Handler
.weak CAN2_RX0_IRQHandler
.thumb_set CAN2_RX0_IRQHandler,Default_Handler
.weak CAN2_RX1_IRQHandler
.thumb_set CAN2_RX1_IRQHandler,Default_Handler
.weak CAN2_SCE_IRQHandler
.thumb_set CAN2_SCE_IRQHandler,Default_Handler
.weak DMA2D_IRQHandler
.thumb_set DMA2D_IRQHandler,Default_Handler
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/