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目前，多数 mcu 厂商都提供一个启动文件。当然，编程者也可以自己编写启动文件，具体编写要求ARM的网站上都有相关文档进行说明。下面分析一下 STM32 启动文件startup_stm32f37x.s，具体看里面的注释。
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- ;/******************** (C) COPYRIGHT 2012 STMicroelectronics ********************
- ;* File Name : startup_stm32f37x.s
- ;* Author : MCD Application Team
- ;* Version : V1.0.0
- ;* Date : 20-September-2012
- ;* Description : STM32F37x Devices vector table for EWARM toolchain.
- ;* This module peRForms:
- ;* - Set the initial SP
- ;* - Set the initial PC == iar_program_start,
- ;* - Set the vector table entries with the exceptions ISR
- ;* address.
- ;* After Reset the Cortex-M4 processor is in Thread mode,
- ;* priority is Privileged, and the Stack is set to Main.
- ;*******************************************************************************
- ; @attention
- ;
- ; 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:
- ;
- ; 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.
- ;
- ;*******************************************************************************
- ;
- ;
- ; The modules in this file are included in the libraries, and may be replaced
- ; by any user-defined modules that define the PUBLIC symbol _program_start or
- ; a user defined start symbol.
- ; To override the cstartup defined in the library, simply add your modified
- ; version to the workbench project.
- ;
- ; The vector table is normally located at address 0.
- ; When debugging in RAM, it can be located in RAM, aligned to at least 2^6.
- ; The name "__vector_table" has special meaning for C-SPY:
- ; it is where the SP start value is found, and the NVIC vector
- ; table register (VTOR) is initialized to this address if != 0.
- ;
- ; Cortex-M version
- ;
- MODULE ?cstartup
- ;; Forward declaration of sections.
- SECTION CSTACK: DATA:NOROOT(3)
- SECTION .intvec:CODE:NOROOT(2)
- EXTERN __iar_program_start
- EXTERN SystemInit
- PUBLIC __vector_table
- DATA
- __vector_table
- DCD sfe(CSTACK)
- DCD Reset_Handler ; Reset Handler
- DCD NMI_Handler ; NMI Handler
- DCD HardFault_Handler ; Hard Fault Handler
- DCD MemManage_Handler ; MPU Fault Handler
- DCD BusFault_Handler ; Bus Fault Handler
- DCD UsageFault_Handler ; Usage Fault Handler
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD SVC_Handler ; SVCall Handler
- DCD DebugMon_Handler ; Debug Monitor Handler
- DCD 0 ; Reserved
- DCD PendSV_Handler ; PendSV Handler
- DCD SysTick_Handler ; SysTick Handler
- ; External Interrupts
- DCD WWDG_IRQHandler ; Window WatchDog
- DCD PVD_IRQHandler ; PVD through EXTI Line detection
- DCD TAMPER_STAMP_IRQHandler ; Tamper and TimeStamps through the EXTI line
- DCD RTC_WKUP_IRQHandler ; RTC Wakeup through the EXTI line
- DCD FLASH_IRQHandler ; FLASH
- DCD RCC_IRQHandler ; RCC
- DCD EXTI0_IRQHandler ; EXTI Line0
- DCD EXTI1_IRQHandler ; EXTI Line1
- DCD EXTI2_TS_IRQHandler ; EXTI Line2 and Touch Sense controller
- DCD EXTI3_IRQHandler ; EXTI Line3
- DCD EXTI4_IRQHandler ; EXTI Line4
- DCD DMA1_Channel1_IRQHandler ; DMA1 Channel 1
- DCD DMA1_Channel2_IRQHandler ; DMA1 Channel 2
- DCD DMA1_Channel3_IRQHandler ; DMA1 Channel 3
- DCD DMA1_Channel4_IRQHandler ; DMA1 Channel 4
- DCD DMA1_Channel5_IRQHandler ; DMA1 Channel 5
- DCD DMA1_Channel6_IRQHandler ; DMA1 Channel 6
- DCD DMA1_Channel7_IRQHandler ; DMA1 Channel 7
- DCD ADC1_IRQHandler ; ADC1
- DCD CAN1_TX_IRQHandler ; CAN1 TX
- DCD CAN1_RX0_IRQHandler ; CAN1 RX0
- DCD CAN1_RX1_IRQHandler ; CAN1 RX1
- DCD CAN1_SCE_IRQHandler ; CAN1 SCE
- DCD EXTI9_5_IRQHandler ; External Line[9:5]s
- DCD TIM15_IRQHandler ; TIM15
- DCD TIM16_IRQHandler ; TIM16
- DCD TIM17_IRQHandler ; TIM17
- DCD TIM18_DAC2_IRQHandler ; TIM18 and DAC2
- DCD TIM2_IRQHandler ; TIM2
- DCD TIM3_IRQHandler ; TIM3
- DCD TIM4_IRQHandler ; TIM4
- DCD I2C1_EV_IRQHandler ; I2C1 Event
- DCD I2C1_ER_IRQHandler ; I2C1 Error
- DCD I2C2_EV_IRQHandler ; I2C2 Event
- DCD I2C2_ER_IRQHandler ; I2C2 Error
- DCD SPI1_IRQHandler ; SPI1
- DCD SPI2_IRQHandler ; SPI2
- DCD USART1_IRQHandler ; USART1
- DCD USART2_IRQHandler ; USART2
- DCD USART3_IRQHandler ; USART3
- DCD EXTI15_10_IRQHandler ; External Line[15:10]s
- DCD RTC_Alarm_IRQHandler ; RTC Alarm (A and B) through EXTI Line
- DCD CEC_IRQHandler ; CEC
- DCD TIM12_IRQHandler ; TIM12
- DCD TIM13_IRQHandler ; TIM13
- DCD TIM14_IRQHandler ; TIM14
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD TIM5_IRQHandler ; TIM5
- DCD SPI3_IRQHandler ; SPI3
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD TIM6_DAC1_IRQHandler ; TIM6 and DAC1 Channel1 & channel2
- DCD TIM7_IRQHandler ; TIM7
- DCD DMA2_Channel1_IRQHandler ; DMA2 Channel 1
- DCD DMA2_Channel2_IRQHandler ; DMA2 Channel 2
- DCD DMA2_Channel3_IRQHandler ; DMA2 Channel 3
- DCD DMA2_Channel4_IRQHandler ; DMA2 Channel 4
- DCD DMA2_Channel5_IRQHandler ; DMA2 Channel 5
- DCD SDADC1_IRQHandler ; SDADC1
- DCD SDADC2_IRQHandler ; SDADC2
- DCD SDADC3_IRQHandler ; SDADC3
- DCD COMP_IRQHandler ; COMP
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD USB_HP_IRQHandler ; USB High Priority
- DCD USB_LP_IRQHandler ; USB Low Priority
- DCD USBWakeUp_IRQHandler ; USB Wakeup
- DCD 0 ; Reserved
- DCD TIM19_IRQHandler ; TIM19
- DCD 0 ; Reserved
- DCD 0 ; Reserved
- DCD FPU_IRQHandler ; FPU
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;
- ;; Default interrupt handlers.
- ;;
- THUMB
- PUBWEAK Reset_Handler
- SECTION .text:CODE:REORDER(2)
- Reset_Handler
- LDR R0, =SystemInit
- BLX R0
- LDR R0, =__iar_program_start
- BX R0
- PUBWEAK NMI_Handler
- SECTION .text:CODE:REORDER(1)
- NMI_Handler
- B NMI_Handler
- PUBWEAK HardFault_Handler
- SECTION .text:CODE:REORDER(1)
- HardFault_Handler
- B HardFault_Handler
- PUBWEAK MemManage_Handler
- SECTION .text:CODE:REORDER(1)
- MemManage_Handler
- B MemManage_Handler
- PUBWEAK BusFault_Handler
- SECTION .text:CODE:REORDER(1)
- BusFault_Handler
- B BusFault_Handler
- PUBWEAK UsageFault_Handler
- SECTION .text:CODE:REORDER(1)
- UsageFault_Handler
- B UsageFault_Handler
- PUBWEAK SVC_Handler
- SECTION .text:CODE:REORDER(1)
- SVC_Handler
- B SVC_Handler
- PUBWEAK DebugMon_Handler
- SECTION .text:CODE:REORDER(1)
- DebugMon_Handler
- B DebugMon_Handler
- PUBWEAK PendSV_Handler
- SECTION .text:CODE:REORDER(1)
- PendSV_Handler
- B PendSV_Handler
- PUBWEAK SysTick_Handler
- SECTION .text:CODE:REORDER(1)
- SysTick_Handler
- B SysTick_Handler
- PUBWEAK WWDG_IRQHandler
- SECTION .text:CODE:REORDER(1)
- WWDG_IRQHandler
- B WWDG_IRQHandler
- PUBWEAK PVD_IRQHandler
- SECTION .text:CODE:REORDER(1)
- PVD_IRQHandler
- B PVD_IRQHandler
- PUBWEAK TAMPER_STAMP_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TAMPER_STAMP_IRQHandler
- B TAMPER_STAMP_IRQHandler
- PUBWEAK RTC_WKUP_IRQHandler
- SECTION .text:CODE:REORDER(1)
- RTC_WKUP_IRQHandler
- B RTC_WKUP_IRQHandler
- PUBWEAK FLASH_IRQHandler
- SECTION .text:CODE:REORDER(1)
- FLASH_IRQHandler
- B FLASH_IRQHandler
- PUBWEAK RCC_IRQHandler
- SECTION .text:CODE:REORDER(1)
- RCC_IRQHandler
- B RCC_IRQHandler
- PUBWEAK EXTI0_IRQHandler
- SECTION .text:CODE:REORDER(1)
- EXTI0_IRQHandler
- B EXTI0_IRQHandler
- PUBWEAK EXTI1_IRQHandler
- SECTION .text:CODE:REORDER(1)
- EXTI1_IRQHandler
- B EXTI1_IRQHandler
- PUBWEAK EXTI2_TS_IRQHandler
- SECTION .text:CODE:REORDER(1)
- EXTI2_TS_IRQHandler
- B EXTI2_TS_IRQHandler
- PUBWEAK EXTI3_IRQHandler
- SECTION .text:CODE:REORDER(1)
- EXTI3_IRQHandler
- B EXTI3_IRQHandler
- PUBWEAK EXTI4_IRQHandler
- SECTION .text:CODE:REORDER(1)
- EXTI4_IRQHandler
- B EXTI4_IRQHandler
- PUBWEAK DMA1_Channel1_IRQHandler
- SECTION .text:CODE:REORDER(1)
- DMA1_Channel1_IRQHandler
- B DMA1_Channel1_IRQHandler
- PUBWEAK DMA1_Channel2_IRQHandler
- SECTION .text:CODE:REORDER(1)
- DMA1_Channel2_IRQHandler
- B DMA1_Channel2_IRQHandler
- PUBWEAK DMA1_Channel3_IRQHandler
- SECTION .text:CODE:REORDER(1)
- DMA1_Channel3_IRQHandler
- B DMA1_Channel3_IRQHandler
- PUBWEAK DMA1_Channel4_IRQHandler
- SECTION .text:CODE:REORDER(1)
- DMA1_Channel4_IRQHandler
- B DMA1_Channel4_IRQHandler
- PUBWEAK DMA1_Channel5_IRQHandler
- SECTION .text:CODE:REORDER(1)
- DMA1_Channel5_IRQHandler
- B DMA1_Channel5_IRQHandler
- PUBWEAK DMA1_Channel6_IRQHandler
- SECTION .text:CODE:REORDER(1)
- DMA1_Channel6_IRQHandler
- B DMA1_Channel6_IRQHandler
- PUBWEAK DMA1_Channel7_IRQHandler
- SECTION .text:CODE:REORDER(1)
- DMA1_Channel7_IRQHandler
- B DMA1_Channel7_IRQHandler
- PUBWEAK ADC1_IRQHandler
- SECTION .text:CODE:REORDER(1)
- ADC1_IRQHandler
- B ADC1_IRQHandler
- PUBWEAK CAN1_TX_IRQHandler
- SECTION .text:CODE:REORDER(1)
- CAN1_TX_IRQHandler
- B CAN1_TX_IRQHandler
- PUBWEAK CAN1_RX0_IRQHandler
- SECTION .text:CODE:REORDER(1)
- CAN1_RX0_IRQHandler
- B CAN1_RX0_IRQHandler
- PUBWEAK CAN1_RX1_IRQHandler
- SECTION .text:CODE:REORDER(1)
- CAN1_RX1_IRQHandler
- B CAN1_RX1_IRQHandler
- PUBWEAK CAN1_SCE_IRQHandler
- SECTION .text:CODE:REORDER(1)
- CAN1_SCE_IRQHandler
- B CAN1_SCE_IRQHandler
- PUBWEAK EXTI9_5_IRQHandler
- SECTION .text:CODE:REORDER(1)
- EXTI9_5_IRQHandler
- B EXTI9_5_IRQHandler
- PUBWEAK TIM15_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM15_IRQHandler
- B TIM15_IRQHandler
- PUBWEAK TIM16_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM16_IRQHandler
- B TIM16_IRQHandler
- PUBWEAK TIM17_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM17_IRQHandler
- B TIM17_IRQHandler
- PUBWEAK TIM18_DAC2_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM18_DAC2_IRQHandler
- B TIM18_DAC2_IRQHandler
- PUBWEAK TIM2_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM2_IRQHandler
- B TIM2_IRQHandler
- PUBWEAK TIM3_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM3_IRQHandler
- B TIM3_IRQHandler
- PUBWEAK TIM4_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM4_IRQHandler
- B TIM4_IRQHandler
- PUBWEAK I2C1_EV_IRQHandler
- SECTION .text:CODE:REORDER(1)
- I2C1_EV_IRQHandler
- B I2C1_EV_IRQHandler
- PUBWEAK I2C1_ER_IRQHandler
- SECTION .text:CODE:REORDER(1)
- I2C1_ER_IRQHandler
- B I2C1_ER_IRQHandler
- PUBWEAK I2C2_EV_IRQHandler
- SECTION .text:CODE:REORDER(1)
- I2C2_EV_IRQHandler
- B I2C2_EV_IRQHandler
- PUBWEAK I2C2_ER_IRQHandler
- SECTION .text:CODE:REORDER(1)
- I2C2_ER_IRQHandler
- B I2C2_ER_IRQHandler
- PUBWEAK SPI1_IRQHandler
- SECTION .text:CODE:REORDER(1)
- SPI1_IRQHandler
- B SPI1_IRQHandler
- PUBWEAK SPI2_IRQHandler
- SECTION .text:CODE:REORDER(1)
- SPI2_IRQHandler
- B SPI2_IRQHandler
- PUBWEAK USART1_IRQHandler
- SECTION .text:CODE:REORDER(1)
- USART1_IRQHandler
- B USART1_IRQHandler
- PUBWEAK USART2_IRQHandler
- SECTION .text:CODE:REORDER(1)
- USART2_IRQHandler
- B USART2_IRQHandler
- PUBWEAK USART3_IRQHandler
- SECTION .text:CODE:REORDER(1)
- USART3_IRQHandler
- B USART3_IRQHandler
- PUBWEAK EXTI15_10_IRQHandler
- SECTION .text:CODE:REORDER(1)
- EXTI15_10_IRQHandler
- B EXTI15_10_IRQHandler
- PUBWEAK RTC_Alarm_IRQHandler
- SECTION .text:CODE:REORDER(1)
- RTC_Alarm_IRQHandler
- B RTC_Alarm_IRQHandler
- PUBWEAK CEC_IRQHandler
- SECTION .text:CODE:REORDER(1)
- CEC_IRQHandler
- B CEC_IRQHandler
- PUBWEAK TIM12_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM12_IRQHandler
- B TIM12_IRQHandler
- PUBWEAK TIM13_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM13_IRQHandler
- B TIM13_IRQHandler
- PUBWEAK TIM14_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM14_IRQHandler
- B TIM14_IRQHandler
- PUBWEAK TIM5_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM5_IRQHandler
- B TIM5_IRQHandler
- PUBWEAK SPI3_IRQHandler
- SECTION .text:CODE:REORDER(1)
- SPI3_IRQHandler
- B SPI3_IRQHandler
- PUBWEAK TIM6_DAC1_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM6_DAC1_IRQHandler
- B TIM6_DAC1_IRQHandler
- PUBWEAK TIM7_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM7_IRQHandler
- B TIM7_IRQHandler
- PUBWEAK DMA2_Channel1_IRQHandler
- SECTION .text:CODE:REORDER(1)
- DMA2_Channel1_IRQHandler
- B DMA2_Channel1_IRQHandler
- PUBWEAK DMA2_Channel2_IRQHandler
- SECTION .text:CODE:REORDER(1)
- DMA2_Channel2_IRQHandler
- B DMA2_Channel2_IRQHandler
- PUBWEAK DMA2_Channel3_IRQHandler
- SECTION .text:CODE:REORDER(1)
- DMA2_Channel3_IRQHandler
- B DMA2_Channel3_IRQHandler
- PUBWEAK DMA2_Channel4_IRQHandler
- SECTION .text:CODE:REORDER(1)
- DMA2_Channel4_IRQHandler
- B DMA2_Channel4_IRQHandler
- PUBWEAK DMA2_Channel5_IRQHandler
- SECTION .text:CODE:REORDER(1)
- DMA2_Channel5_IRQHandler
- B DMA2_Channel5_IRQHandler
- PUBWEAK SDADC1_IRQHandler
- SECTION .text:CODE:REORDER(1)
- SDADC1_IRQHandler
- B SDADC1_IRQHandler
- PUBWEAK SDADC2_IRQHandler
- SECTION .text:CODE:REORDER(1)
- SDADC2_IRQHandler
- B SDADC2_IRQHandler
- PUBWEAK SDADC3_IRQHandler
- SECTION .text:CODE:REORDER(1)
- SDADC3_IRQHandler
- B SDADC3_IRQHandler
- PUBWEAK COMP_IRQHandler
- SECTION .text:CODE:REORDER(1)
- COMP_IRQHandler
- B COMP_IRQHandler
- PUBWEAK USB_HP_IRQHandler
- SECTION .text:CODE:REORDER(1)
- USB_HP_IRQHandler
- B USB_HP_IRQHandler
- PUBWEAK USB_LP_IRQHandler
- SECTION .text:CODE:REORDER(1)
- USB_LP_IRQHandler
- B USB_LP_IRQHandler
- PUBWEAK USBWakeUp_IRQHandler
- SECTION .text:CODE:REORDER(1)
- USBWakeUp_IRQHandler
- B USBWakeUp_IRQHandler
- PUBWEAK TIM19_IRQHandler
- SECTION .text:CODE:REORDER(1)
- TIM19_IRQHandler
- B TIM19_IRQHandler
- PUBWEAK FPU_IRQHandler
- SECTION .text:CODE:REORDER(1)
- FPU_IRQHandler
- B FPU_IRQHandler
- END
- ;************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE*****6 F x0 D, ]; p/ F+ H) W
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发表于 2020-10-12 13:30
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