/** ****************************************************************************** * @file startup_stm32l081xx.s * @author MCD Application Team * @brief STM32L081xx Devices vector table for Atollic TrueSTUDIO toolchain. * This module performs: * - Set the initial SP * - Set the initial PC == Reset_Handler, * - Set the vector table entries with the exceptions ISR address * - Branches to main in the C library (which eventually * calls main()). * After Reset the Cortex-M0+ processor is in Thread mode, * priority is Privileged, and the Stack is set to Main. ****************************************************************************** * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ .syntax unified .cpu cortex-m0plus .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 .section .text.Reset_Handler .weak Reset_Handler .type Reset_Handler, %function Reset_Handler: ldr r0, =_estack mov sp, r0 /* 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] adds r2, r2, #4 LoopFillZerobss: ldr r3, = _ebss cmp r2, r3 bcc FillZerobss /* Call the clock system intitialization function.*/ bl SystemInit /* Call static constructors */ bl __libc_init_array /* Call the application's entry point.*/ bl main LoopForever: b LoopForever .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. * * @param None * @retval : None */ .section .text.Default_Handler,"ax",%progbits Default_Handler: Infinite_Loop: b Infinite_Loop .size Default_Handler, .-Default_Handler /****************************************************************************** * * The minimal vector table for a Cortex M0. 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 0 .word 0 .word 0 .word 0 .word 0 .word 0 .word 0 .word SVC_Handler .word 0 .word 0 .word PendSV_Handler .word SysTick_Handler .word WWDG_IRQHandler /* Window WatchDog */ .word PVD_IRQHandler /* PVD through EXTI Line detection */ .word RTC_IRQHandler /* RTC through the EXTI line */ .word FLASH_IRQHandler /* FLASH */ .word RCC_IRQHandler /* RCC */ .word EXTI0_1_IRQHandler /* EXTI Line 0 and 1 */ .word EXTI2_3_IRQHandler /* EXTI Line 2 and 3 */ .word EXTI4_15_IRQHandler /* EXTI Line 4 to 15 */ .word 0 /* Reserved */ .word DMA1_Channel1_IRQHandler /* DMA1 Channel 1 */ .word DMA1_Channel2_3_IRQHandler /* DMA1 Channel 2 and Channel 3 */ .word DMA1_Channel4_5_6_7_IRQHandler /* DMA1 Channel 4, Channel 5, Channel 6 and Channel 7*/ .word ADC1_COMP_IRQHandler /* ADC1, COMP1 and COMP2 */ .word LPTIM1_IRQHandler /* LPTIM1 */ .word USART4_5_IRQHandler /* USART4 and USART 5 */ .word TIM2_IRQHandler /* TIM2 */ .word TIM3_IRQHandler /* TIM3 */ .word TIM6_IRQHandler /* TIM6 */ .word TIM7_IRQHandler /* TIM7 */ .word 0 /* Reserved */ .word TIM21_IRQHandler /* TIM21 */ .word I2C3_IRQHandler /* I2C3 */ .word TIM22_IRQHandler /* TIM22 */ .word I2C1_IRQHandler /* I2C1 */ .word I2C2_IRQHandler /* I2C2 */ .word SPI1_IRQHandler /* SPI1 */ .word SPI2_IRQHandler /* SPI2 */ .word USART1_IRQHandler /* USART1 */ .word USART2_IRQHandler /* USART2 */ .word AES_LPUART1_IRQHandler /* AES and LPUART1 */ .word 0 /* Reserved */ .word 0 /* Reserved */ /******************************************************************************* * * 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 SVC_Handler .thumb_set SVC_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_IRQHandler .thumb_set PVD_IRQHandler,Default_Handler .weak RTC_IRQHandler .thumb_set RTC_IRQHandler,Default_Handler .weak FLASH_IRQHandler .thumb_set FLASH_IRQHandler,Default_Handler .weak RCC_IRQHandler .thumb_set RCC_IRQHandler,Default_Handler .weak EXTI0_1_IRQHandler .thumb_set EXTI0_1_IRQHandler,Default_Handler .weak EXTI2_3_IRQHandler .thumb_set EXTI2_3_IRQHandler,Default_Handler .weak EXTI4_15_IRQHandler .thumb_set EXTI4_15_IRQHandler,Default_Handler .weak DMA1_Channel1_IRQHandler .thumb_set DMA1_Channel1_IRQHandler,Default_Handler .weak DMA1_Channel2_3_IRQHandler .thumb_set DMA1_Channel2_3_IRQHandler,Default_Handler .weak DMA1_Channel4_5_6_7_IRQHandler .thumb_set DMA1_Channel4_5_6_7_IRQHandler,Default_Handler .weak ADC1_COMP_IRQHandler .thumb_set ADC1_COMP_IRQHandler,Default_Handler .weak LPTIM1_IRQHandler .thumb_set LPTIM1_IRQHandler,Default_Handler .weak USART4_5_IRQHandler .thumb_set USART4_5_IRQHandler,Default_Handler .weak TIM2_IRQHandler .thumb_set TIM2_IRQHandler,Default_Handler .weak TIM3_IRQHandler .thumb_set TIM3_IRQHandler,Default_Handler .weak TIM6_IRQHandler .thumb_set TIM6_IRQHandler,Default_Handler .weak TIM7_IRQHandler .thumb_set TIM7_IRQHandler,Default_Handler .weak TIM21_IRQHandler .thumb_set TIM21_IRQHandler,Default_Handler .weak I2C3_IRQHandler .thumb_set I2C3_IRQHandler,Default_Handler .weak TIM22_IRQHandler .thumb_set TIM22_IRQHandler,Default_Handler .weak I2C1_IRQHandler .thumb_set I2C1_IRQHandler,Default_Handler .weak I2C2_IRQHandler .thumb_set I2C2_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 AES_LPUART1_IRQHandler .thumb_set AES_LPUART1_IRQHandler,Default_Handler /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/