前言
因为在做有关STM32F407ZET6的项目,其中一项内容是通过IAP来对STM32进行在线升级,那么首先需要对STM32的启动流程需要做到详细了解。
硬件及调试配置说明:
使用芯片:STM32F407ZET6
调试软件:IAR6.3.0
软件库:STM32的HAL库,版本V1.3.0
启动文件:startup_stm32f407xx.s,版本V1.2.1
必须说明: 因为本人使用的IAR开发平台,因此程序中的指令都是IAR指令集(关于IAR指令,参见《EWARM_AssemblerReference.ENU.pdf》文档),因此会发现很多汇编指令会和在别的地方看到的不一样,但是基本指令的功能基本类似,比如IAR中的SECTION指令和标准ARM指令集中的AREA指令。而且,同类型的文件在扩展名上也可能不同,比如对于“分散加载文件”,IAR扩展名为.icf,但是keil扩展名是.scf,而且编辑命令也不同。
(一)启动文件
我们需要了解:一般的,工程文件件中会包含很多的C文件以及必要的S文件(汇编文件)。用户在使用IDE(集成开发平台)对工程进行一键式处理时,经预处理->编译->汇编->链接后生成可执行文件。其中,每一个S或C文件在经过汇编器“汇编”后都会生成对应的目标文件(.o或.obj或类似格式文件),然后由链接器对各个目标文件进行链接,决定各个目标文件在最终可执行文件(bin或hex或类似格式文件)里的位置。
我们只需要知道:startup_stm32f407xx.s文件成成的目标文件在最终可执行文件中是第一个被执行的!
(我想:不同的源文件(C或S)之间是通过函数调用或参数引用而相互关联起来的。即使是main函数,也是被startup_stm32f407xx.s中汇编代码所调用的,而且此段汇编代码前不再存在其他代码,因此汇编程序应该在最前面执行;同时,通过在线调试,可以看到可执行文件的反汇编文件,其中startup_stm32f407xx.s程序确实是在最前面)
STM32F4和STM32F1的启动文件略不相同,但是基本内容是一样的。启动文件的工作按顺序依次分为以下几项:
- Set the initial SP
- Set the initial PC == _iar_program_start,
- Set the vector table entries with the exceptions ISR address.
- Branches to main in the C library (which eventually calls main()).
(1)设置堆栈
(2)初始化PC指针
(3)设置向量表
(4)跳转到main函数
下面进行分段是分析:
第一段说明:
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
【1】MODULE 控制指令是用来标记 modules 源码的开始和结束,后边的 ?cstartup 是模块的名字,此文档的最后的 END 表明模块的结束
【2】SECTION 指令是声明段,一个段不能同时包含 public symbol 和 pubweak symbol ,模块只有在相同的名字的模块没有被链接进来的时候才会被链接进来。
语法格式:SECTION section:type [flag] [(align)]
align,是用于指定地址对齐到 2^align,他的取值是 0 到 30
flag,取值NOROOT、ROOT、REORDER、NOREORDER,默认是ROOT,NOROOT表示如果这个段中的符号没有被引用,将会被连接器舍弃,即可被优化。ROOT表示不可被优化。REORDER表示开始一个新的名字是 section 的段(section),NOREORDER表示开始一个新的名字为 section 的片段(fragment),多个片段组成一个段(section)
type,memory 的类型,取值是 CODE、CONST、DATA
section,段的名字
【3】EXTERN 用导入(引用)其他模块的 symbol(符号)
【4】PUBLIC 导出 symbol(符号)
第二段:
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 TAMP_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_IRQHandler ; EXTI Line2
DCD EXTI3_IRQHandler ; EXTI Line3
DCD EXTI4_IRQHandler ; EXTI Line4
DCD DMA1_Stream0_IRQHandler ; DMA1 Stream 0
DCD DMA1_Stream1_IRQHandler ; DMA1 Stream 1
DCD DMA1_Stream2_IRQHandler ; DMA1 Stream 2
DCD DMA1_Stream3_IRQHandler ; DMA1 Stream 3
DCD DMA1_Stream4_IRQHandler ; DMA1 Stream 4
DCD DMA1_Stream5_IRQHandler ; DMA1 Stream 5
DCD DMA1_Stream6_IRQHandler ; DMA1 Stream 6
DCD ADC_IRQHandler ; ADC1, ADC2 and ADC3s
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 TIM1_BRK_TIM9_IRQHandler ; TIM1 Break and TIM9
DCD TIM1_UP_TIM10_IRQHandler ; TIM1 Update and TIM10
DCD TIM1_TRG_COM_TIM11_IRQHandler ; TIM1 Trigger and Commutation and TIM11
DCD TIM1_CC_IRQHandler ; TIM1 Capture Compare
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 OTG_FS_WKUP_IRQHandler ; USB OTG FS Wakeup through EXTI line
DCD TIM8_BRK_TIM12_IRQHandler ; TIM8 Break and TIM12
DCD TIM8_UP_TIM13_IRQHandler ; TIM8 Update and TIM13
DCD TIM8_TRG_COM_TIM14_IRQHandler ; TIM8 Trigger and Commutation and TIM14
DCD TIM8_CC_IRQHandler ; TIM8 Capture Compare
DCD DMA1_Stream7_IRQHandler ; DMA1 Stream7
DCD FSMC_IRQHandler ; FSMC
DCD SDIO_IRQHandler ; SDIO
DCD TIM5_IRQHandler ; TIM5
DCD SPI3_IRQHandler ; SPI3
DCD UART4_IRQHandler ; UART4
DCD UART5_IRQHandler ; UART5
DCD TIM6_DAC_IRQHandler ; TIM6 and DAC1&2 underrun errors
DCD TIM7_IRQHandler ; TIM7
DCD DMA2_Stream0_IRQHandler ; DMA2 Stream 0
DCD DMA2_Stream1_IRQHandler ; DMA2 Stream 1
DCD DMA2_Stream2_IRQHandler ; DMA2 Stream 2
DCD DMA2_Stream3_IRQHandler ; DMA2 Stream 3
DCD DMA2_Stream4_IRQHandler ; DMA2 Stream 4
DCD ETH_IRQHandler ; Ethernet
DCD ETH_WKUP_IRQHandler ; Ethernet Wakeup through EXTI line
DCD CAN2_TX_IRQHandler ; CAN2 TX
DCD CAN2_RX0_IRQHandler ; CAN2 RX0
DCD CAN2_RX1_IRQHandler ; CAN2 RX1
DCD CAN2_SCE_IRQHandler ; CAN2 SCE
DCD OTG_FS_IRQHandler ; USB OTG FS
DCD DMA2_Stream5_IRQHandler ; DMA2 Stream 5
DCD DMA2_Stream6_IRQHandler ; DMA2 Stream 6
DCD DMA2_Stream7_IRQHandler ; DMA2 Stream 7
DCD USART6_IRQHandler ; USART6
DCD I2C3_EV_IRQHandler ; I2C3 event
DCD I2C3_ER_IRQHandler ; I2C3 error
DCD OTG_HS_EP1_OUT_IRQHandler ; USB OTG HS End Point 1 Out
DCD OTG_HS_EP1_IN_IRQHandler ; USB OTG HS End Point 1 In
DCD OTG_HS_WKUP_IRQHandler ; USB OTG HS Wakeup through EXTI
DCD OTG_HS_IRQHandler ; USB OTG HS
DCD DCMI_IRQHandler ; DCMI
DCD 0 ; Reserved
DCD HASH_RNG_IRQHandler ; Hash and RNG
DCD FPU_IRQHandler ; FPU
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
【1】DATA 表示下边中的标签是 32 位的标签,THUMB 表示下边的标签是 16 位的标签,所谓的标签是 地址的别名,不占用代码空间,给编译器看的
【2】 DCD 是数据定义或者 重定位指令,为的是定义一个值,或者保留 memory,DCD 别名是 DC32,用于声明一个 32 位的常量,这部分是中断向量表的内容,需要注意的是,他们的顺序不能改变,此部分会放到 flash 的最开始部分,当系统启动的时候会加载前另个地址,第一个地址是 c 程序的栈的栈顶地址,第二个地址是向量表的开始地址,中断发生时会根据向量表的首地址和偏移量来找到程序的入口
【3】sfe 指令作用是返回栈的结尾,因为栈的增长方向是反方向的
第三段:中断处理函数
;; Default interrupt handlers.
;;
THUMB
PUBWEAK Reset_Handler
SECTION .text:CODE:REORDER:NOROOT(2)
Reset_Handler
LDR R0, =SystemInit
BLX R0
LDR R0, =__iar_program_start
BX R0
PUBWEAK NMI_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
NMI_Handler
B NMI_Handler
PUBWEAK HardFault_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
HardFault_Handler
B HardFault_Handler
PUBWEAK MemManage_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
MemManage_Handler
B MemManage_Handler
PUBWEAK BusFault_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
BusFault_Handler
B BusFault_Handler
PUBWEAK UsageFault_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
UsageFault_Handler
B UsageFault_Handler
PUBWEAK SVC_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
SVC_Handler
B SVC_Handler
PUBWEAK DebugMon_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
DebugMon_Handler
B DebugMon_Handler
PUBWEAK PendSV_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
PendSV_Handler
B PendSV_Handler
PUBWEAK SysTick_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
SysTick_Handler
B SysTick_Handler
PUBWEAK WWDG_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
WWDG_IRQHandler
B WWDG_IRQHandler
PUBWEAK PVD_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
PVD_IRQHandler
B PVD_IRQHandler
PUBWEAK TAMP_STAMP_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TAMP_STAMP_IRQHandler
B TAMP_STAMP_IRQHandler
PUBWEAK RTC_WKUP_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
RTC_WKUP_IRQHandler
B RTC_WKUP_IRQHandler
PUBWEAK FLASH_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
FLASH_IRQHandler
B FLASH_IRQHandler
PUBWEAK RCC_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
RCC_IRQHandler
B RCC_IRQHandler
PUBWEAK EXTI0_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI0_IRQHandler
B EXTI0_IRQHandler
PUBWEAK EXTI1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI1_IRQHandler
B EXTI1_IRQHandler
PUBWEAK EXTI2_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI2_IRQHandler
B EXTI2_IRQHandler
PUBWEAK EXTI3_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI3_IRQHandler
B EXTI3_IRQHandler
PUBWEAK EXTI4_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI4_IRQHandler
B EXTI4_IRQHandler
PUBWEAK DMA1_Stream0_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream0_IRQHandler
B DMA1_Stream0_IRQHandler
PUBWEAK DMA1_Stream1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream1_IRQHandler
B DMA1_Stream1_IRQHandler
PUBWEAK DMA1_Stream2_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream2_IRQHandler
B DMA1_Stream2_IRQHandler
PUBWEAK DMA1_Stream3_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream3_IRQHandler
B DMA1_Stream3_IRQHandler
PUBWEAK DMA1_Stream4_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream4_IRQHandler
B DMA1_Stream4_IRQHandler
PUBWEAK DMA1_Stream5_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream5_IRQHandler
B DMA1_Stream5_IRQHandler
PUBWEAK DMA1_Stream6_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream6_IRQHandler
B DMA1_Stream6_IRQHandler
PUBWEAK ADC_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
ADC_IRQHandler
B ADC_IRQHandler
PUBWEAK CAN1_TX_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN1_TX_IRQHandler
B CAN1_TX_IRQHandler
PUBWEAK CAN1_RX0_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN1_RX0_IRQHandler
B CAN1_RX0_IRQHandler
PUBWEAK CAN1_RX1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN1_RX1_IRQHandler
B CAN1_RX1_IRQHandler
PUBWEAK CAN1_SCE_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN1_SCE_IRQHandler
B CAN1_SCE_IRQHandler
PUBWEAK EXTI9_5_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI9_5_IRQHandler
B EXTI9_5_IRQHandler
PUBWEAK TIM1_BRK_TIM9_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM1_BRK_TIM9_IRQHandler
B TIM1_BRK_TIM9_IRQHandler
PUBWEAK TIM1_UP_TIM10_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM1_UP_TIM10_IRQHandler
B TIM1_UP_TIM10_IRQHandler
PUBWEAK TIM1_TRG_COM_TIM11_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM1_TRG_COM_TIM11_IRQHandler
B TIM1_TRG_COM_TIM11_IRQHandler
PUBWEAK TIM1_CC_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM1_CC_IRQHandler
B TIM1_CC_IRQHandler
PUBWEAK TIM2_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM2_IRQHandler
B TIM2_IRQHandler
PUBWEAK TIM3_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM3_IRQHandler
B TIM3_IRQHandler
PUBWEAK TIM4_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM4_IRQHandler
B TIM4_IRQHandler
PUBWEAK I2C1_EV_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
I2C1_EV_IRQHandler
B I2C1_EV_IRQHandler
PUBWEAK I2C1_ER_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
I2C1_ER_IRQHandler
B I2C1_ER_IRQHandler
PUBWEAK I2C2_EV_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
I2C2_EV_IRQHandler
B I2C2_EV_IRQHandler
PUBWEAK I2C2_ER_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
I2C2_ER_IRQHandler
B I2C2_ER_IRQHandler
PUBWEAK SPI1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
SPI1_IRQHandler
B SPI1_IRQHandler
PUBWEAK SPI2_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
SPI2_IRQHandler
B SPI2_IRQHandler
PUBWEAK USART1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
USART1_IRQHandler
B USART1_IRQHandler
PUBWEAK USART2_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
USART2_IRQHandler
B USART2_IRQHandler
PUBWEAK USART3_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
USART3_IRQHandler
B USART3_IRQHandler
PUBWEAK EXTI15_10_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI15_10_IRQHandler
B EXTI15_10_IRQHandler
PUBWEAK RTC_Alarm_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
RTC_Alarm_IRQHandler
B RTC_Alarm_IRQHandler
PUBWEAK OTG_FS_WKUP_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
OTG_FS_WKUP_IRQHandler
B OTG_FS_WKUP_IRQHandler
PUBWEAK TIM8_BRK_TIM12_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM8_BRK_TIM12_IRQHandler
B TIM8_BRK_TIM12_IRQHandler
PUBWEAK TIM8_UP_TIM13_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM8_UP_TIM13_IRQHandler
B TIM8_UP_TIM13_IRQHandler
PUBWEAK TIM8_TRG_COM_TIM14_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM8_TRG_COM_TIM14_IRQHandler
B TIM8_TRG_COM_TIM14_IRQHandler
PUBWEAK TIM8_CC_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM8_CC_IRQHandler
B TIM8_CC_IRQHandler
PUBWEAK DMA1_Stream7_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream7_IRQHandler
B DMA1_Stream7_IRQHandler
PUBWEAK FSMC_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
FSMC_IRQHandler
B FSMC_IRQHandler
PUBWEAK SDIO_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
SDIO_IRQHandler
B SDIO_IRQHandler
PUBWEAK TIM5_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM5_IRQHandler
B TIM5_IRQHandler
PUBWEAK SPI3_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
SPI3_IRQHandler
B SPI3_IRQHandler
PUBWEAK UART4_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
UART4_IRQHandler
B UART4_IRQHandler
PUBWEAK UART5_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
UART5_IRQHandler
B UART5_IRQHandler
PUBWEAK TIM6_DAC_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM6_DAC_IRQHandler
B TIM6_DAC_IRQHandler
PUBWEAK TIM7_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM7_IRQHandler
B TIM7_IRQHandler
PUBWEAK DMA2_Stream0_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream0_IRQHandler
B DMA2_Stream0_IRQHandler
PUBWEAK DMA2_Stream1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream1_IRQHandler
B DMA2_Stream1_IRQHandler
PUBWEAK DMA2_Stream2_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream2_IRQHandler
B DMA2_Stream2_IRQHandler
PUBWEAK DMA2_Stream3_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream3_IRQHandler
B DMA2_Stream3_IRQHandler
PUBWEAK DMA2_Stream4_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream4_IRQHandler
B DMA2_Stream4_IRQHandler
PUBWEAK ETH_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
ETH_IRQHandler
B ETH_IRQHandler
PUBWEAK ETH_WKUP_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
ETH_WKUP_IRQHandler
B ETH_WKUP_IRQHandler
PUBWEAK CAN2_TX_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN2_TX_IRQHandler
B CAN2_TX_IRQHandler
PUBWEAK CAN2_RX0_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN2_RX0_IRQHandler
B CAN2_RX0_IRQHandler
PUBWEAK CAN2_RX1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN2_RX1_IRQHandler
B CAN2_RX1_IRQHandler
PUBWEAK CAN2_SCE_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN2_SCE_IRQHandler
B CAN2_SCE_IRQHandler
PUBWEAK OTG_FS_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
OTG_FS_IRQHandler
B OTG_FS_IRQHandler
PUBWEAK DMA2_Stream5_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream5_IRQHandler
B DMA2_Stream5_IRQHandler
PUBWEAK DMA2_Stream6_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream6_IRQHandler
B DMA2_Stream6_IRQHandler
PUBWEAK DMA2_Stream7_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream7_IRQHandler
B DMA2_Stream7_IRQHandler
PUBWEAK USART6_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
USART6_IRQHandler
B USART6_IRQHandler
PUBWEAK I2C3_EV_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
I2C3_EV_IRQHandler
B I2C3_EV_IRQHandler
PUBWEAK I2C3_ER_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
I2C3_ER_IRQHandler
B I2C3_ER_IRQHandler
PUBWEAK OTG_HS_EP1_OUT_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
OTG_HS_EP1_OUT_IRQHandler
B OTG_HS_EP1_OUT_IRQHandler
PUBWEAK OTG_HS_EP1_IN_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
OTG_HS_EP1_IN_IRQHandler
B OTG_HS_EP1_IN_IRQHandler
PUBWEAK OTG_HS_WKUP_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
OTG_HS_WKUP_IRQHandler
B OTG_HS_WKUP_IRQHandler
PUBWEAK OTG_HS_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
OTG_HS_IRQHandler
B OTG_HS_IRQHandler
PUBWEAK DCMI_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DCMI_IRQHandler
B DCMI_IRQHandler
PUBWEAK HASH_RNG_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
HASH_RNG_IRQHandler
B HASH_RNG_IRQHandler
PUBWEAK FPU_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
FPU_IRQHandler
B FPU_IRQHandler
END
前言
因为在做有关STM32F407ZET6的项目,其中一项内容是通过IAP来对STM32进行在线升级,那么首先需要对STM32的启动流程需要做到详细了解。
硬件及调试配置说明:
使用芯片:STM32F407ZET6
调试软件:IAR6.3.0
软件库:STM32的HAL库,版本V1.3.0
启动文件:startup_stm32f407xx.s,版本V1.2.1
必须说明: 因为本人使用的IAR开发平台,因此程序中的指令都是IAR指令集(关于IAR指令,参见《EWARM_AssemblerReference.ENU.pdf》文档),因此会发现很多汇编指令会和在别的地方看到的不一样,但是基本指令的功能基本类似,比如IAR中的SECTION指令和标准ARM指令集中的AREA指令。而且,同类型的文件在扩展名上也可能不同,比如对于“分散加载文件”,IAR扩展名为.icf,但是keil扩展名是.scf,而且编辑命令也不同。
(一)启动文件
我们需要了解:一般的,工程文件件中会包含很多的C文件以及必要的S文件(汇编文件)。用户在使用IDE(集成开发平台)对工程进行一键式处理时,经预处理->编译->汇编->链接后生成可执行文件。其中,每一个S或C文件在经过汇编器“汇编”后都会生成对应的目标文件(.o或.obj或类似格式文件),然后由链接器对各个目标文件进行链接,决定各个目标文件在最终可执行文件(bin或hex或类似格式文件)里的位置。
我们只需要知道:startup_stm32f407xx.s文件成成的目标文件在最终可执行文件中是第一个被执行的!
(我想:不同的源文件(C或S)之间是通过函数调用或参数引用而相互关联起来的。即使是main函数,也是被startup_stm32f407xx.s中汇编代码所调用的,而且此段汇编代码前不再存在其他代码,因此汇编程序应该在最前面执行;同时,通过在线调试,可以看到可执行文件的反汇编文件,其中startup_stm32f407xx.s程序确实是在最前面)
STM32F4和STM32F1的启动文件略不相同,但是基本内容是一样的。启动文件的工作按顺序依次分为以下几项:
- Set the initial SP
- Set the initial PC == _iar_program_start,
- Set the vector table entries with the exceptions ISR address.
- Branches to main in the C library (which eventually calls main()).
(1)设置堆栈
(2)初始化PC指针
(3)设置向量表
(4)跳转到main函数
下面进行分段是分析:
第一段说明:
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
【1】MODULE 控制指令是用来标记 modules 源码的开始和结束,后边的 ?cstartup 是模块的名字,此文档的最后的 END 表明模块的结束
【2】SECTION 指令是声明段,一个段不能同时包含 public symbol 和 pubweak symbol ,模块只有在相同的名字的模块没有被链接进来的时候才会被链接进来。
语法格式:SECTION section:type [flag] [(align)]
align,是用于指定地址对齐到 2^align,他的取值是 0 到 30
flag,取值NOROOT、ROOT、REORDER、NOREORDER,默认是ROOT,NOROOT表示如果这个段中的符号没有被引用,将会被连接器舍弃,即可被优化。ROOT表示不可被优化。REORDER表示开始一个新的名字是 section 的段(section),NOREORDER表示开始一个新的名字为 section 的片段(fragment),多个片段组成一个段(section)
type,memory 的类型,取值是 CODE、CONST、DATA
section,段的名字
【3】EXTERN 用导入(引用)其他模块的 symbol(符号)
【4】PUBLIC 导出 symbol(符号)
第二段:
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 TAMP_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_IRQHandler ; EXTI Line2
DCD EXTI3_IRQHandler ; EXTI Line3
DCD EXTI4_IRQHandler ; EXTI Line4
DCD DMA1_Stream0_IRQHandler ; DMA1 Stream 0
DCD DMA1_Stream1_IRQHandler ; DMA1 Stream 1
DCD DMA1_Stream2_IRQHandler ; DMA1 Stream 2
DCD DMA1_Stream3_IRQHandler ; DMA1 Stream 3
DCD DMA1_Stream4_IRQHandler ; DMA1 Stream 4
DCD DMA1_Stream5_IRQHandler ; DMA1 Stream 5
DCD DMA1_Stream6_IRQHandler ; DMA1 Stream 6
DCD ADC_IRQHandler ; ADC1, ADC2 and ADC3s
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 TIM1_BRK_TIM9_IRQHandler ; TIM1 Break and TIM9
DCD TIM1_UP_TIM10_IRQHandler ; TIM1 Update and TIM10
DCD TIM1_TRG_COM_TIM11_IRQHandler ; TIM1 Trigger and Commutation and TIM11
DCD TIM1_CC_IRQHandler ; TIM1 Capture Compare
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 OTG_FS_WKUP_IRQHandler ; USB OTG FS Wakeup through EXTI line
DCD TIM8_BRK_TIM12_IRQHandler ; TIM8 Break and TIM12
DCD TIM8_UP_TIM13_IRQHandler ; TIM8 Update and TIM13
DCD TIM8_TRG_COM_TIM14_IRQHandler ; TIM8 Trigger and Commutation and TIM14
DCD TIM8_CC_IRQHandler ; TIM8 Capture Compare
DCD DMA1_Stream7_IRQHandler ; DMA1 Stream7
DCD FSMC_IRQHandler ; FSMC
DCD SDIO_IRQHandler ; SDIO
DCD TIM5_IRQHandler ; TIM5
DCD SPI3_IRQHandler ; SPI3
DCD UART4_IRQHandler ; UART4
DCD UART5_IRQHandler ; UART5
DCD TIM6_DAC_IRQHandler ; TIM6 and DAC1&2 underrun errors
DCD TIM7_IRQHandler ; TIM7
DCD DMA2_Stream0_IRQHandler ; DMA2 Stream 0
DCD DMA2_Stream1_IRQHandler ; DMA2 Stream 1
DCD DMA2_Stream2_IRQHandler ; DMA2 Stream 2
DCD DMA2_Stream3_IRQHandler ; DMA2 Stream 3
DCD DMA2_Stream4_IRQHandler ; DMA2 Stream 4
DCD ETH_IRQHandler ; Ethernet
DCD ETH_WKUP_IRQHandler ; Ethernet Wakeup through EXTI line
DCD CAN2_TX_IRQHandler ; CAN2 TX
DCD CAN2_RX0_IRQHandler ; CAN2 RX0
DCD CAN2_RX1_IRQHandler ; CAN2 RX1
DCD CAN2_SCE_IRQHandler ; CAN2 SCE
DCD OTG_FS_IRQHandler ; USB OTG FS
DCD DMA2_Stream5_IRQHandler ; DMA2 Stream 5
DCD DMA2_Stream6_IRQHandler ; DMA2 Stream 6
DCD DMA2_Stream7_IRQHandler ; DMA2 Stream 7
DCD USART6_IRQHandler ; USART6
DCD I2C3_EV_IRQHandler ; I2C3 event
DCD I2C3_ER_IRQHandler ; I2C3 error
DCD OTG_HS_EP1_OUT_IRQHandler ; USB OTG HS End Point 1 Out
DCD OTG_HS_EP1_IN_IRQHandler ; USB OTG HS End Point 1 In
DCD OTG_HS_WKUP_IRQHandler ; USB OTG HS Wakeup through EXTI
DCD OTG_HS_IRQHandler ; USB OTG HS
DCD DCMI_IRQHandler ; DCMI
DCD 0 ; Reserved
DCD HASH_RNG_IRQHandler ; Hash and RNG
DCD FPU_IRQHandler ; FPU
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
【1】DATA 表示下边中的标签是 32 位的标签,THUMB 表示下边的标签是 16 位的标签,所谓的标签是 地址的别名,不占用代码空间,给编译器看的
【2】 DCD 是数据定义或者 重定位指令,为的是定义一个值,或者保留 memory,DCD 别名是 DC32,用于声明一个 32 位的常量,这部分是中断向量表的内容,需要注意的是,他们的顺序不能改变,此部分会放到 flash 的最开始部分,当系统启动的时候会加载前另个地址,第一个地址是 c 程序的栈的栈顶地址,第二个地址是向量表的开始地址,中断发生时会根据向量表的首地址和偏移量来找到程序的入口
【3】sfe 指令作用是返回栈的结尾,因为栈的增长方向是反方向的
第三段:中断处理函数
;; Default interrupt handlers.
;;
THUMB
PUBWEAK Reset_Handler
SECTION .text:CODE:REORDER:NOROOT(2)
Reset_Handler
LDR R0, =SystemInit
BLX R0
LDR R0, =__iar_program_start
BX R0
PUBWEAK NMI_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
NMI_Handler
B NMI_Handler
PUBWEAK HardFault_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
HardFault_Handler
B HardFault_Handler
PUBWEAK MemManage_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
MemManage_Handler
B MemManage_Handler
PUBWEAK BusFault_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
BusFault_Handler
B BusFault_Handler
PUBWEAK UsageFault_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
UsageFault_Handler
B UsageFault_Handler
PUBWEAK SVC_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
SVC_Handler
B SVC_Handler
PUBWEAK DebugMon_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
DebugMon_Handler
B DebugMon_Handler
PUBWEAK PendSV_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
PendSV_Handler
B PendSV_Handler
PUBWEAK SysTick_Handler
SECTION .text:CODE:REORDER:NOROOT(1)
SysTick_Handler
B SysTick_Handler
PUBWEAK WWDG_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
WWDG_IRQHandler
B WWDG_IRQHandler
PUBWEAK PVD_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
PVD_IRQHandler
B PVD_IRQHandler
PUBWEAK TAMP_STAMP_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TAMP_STAMP_IRQHandler
B TAMP_STAMP_IRQHandler
PUBWEAK RTC_WKUP_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
RTC_WKUP_IRQHandler
B RTC_WKUP_IRQHandler
PUBWEAK FLASH_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
FLASH_IRQHandler
B FLASH_IRQHandler
PUBWEAK RCC_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
RCC_IRQHandler
B RCC_IRQHandler
PUBWEAK EXTI0_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI0_IRQHandler
B EXTI0_IRQHandler
PUBWEAK EXTI1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI1_IRQHandler
B EXTI1_IRQHandler
PUBWEAK EXTI2_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI2_IRQHandler
B EXTI2_IRQHandler
PUBWEAK EXTI3_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI3_IRQHandler
B EXTI3_IRQHandler
PUBWEAK EXTI4_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI4_IRQHandler
B EXTI4_IRQHandler
PUBWEAK DMA1_Stream0_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream0_IRQHandler
B DMA1_Stream0_IRQHandler
PUBWEAK DMA1_Stream1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream1_IRQHandler
B DMA1_Stream1_IRQHandler
PUBWEAK DMA1_Stream2_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream2_IRQHandler
B DMA1_Stream2_IRQHandler
PUBWEAK DMA1_Stream3_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream3_IRQHandler
B DMA1_Stream3_IRQHandler
PUBWEAK DMA1_Stream4_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream4_IRQHandler
B DMA1_Stream4_IRQHandler
PUBWEAK DMA1_Stream5_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream5_IRQHandler
B DMA1_Stream5_IRQHandler
PUBWEAK DMA1_Stream6_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream6_IRQHandler
B DMA1_Stream6_IRQHandler
PUBWEAK ADC_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
ADC_IRQHandler
B ADC_IRQHandler
PUBWEAK CAN1_TX_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN1_TX_IRQHandler
B CAN1_TX_IRQHandler
PUBWEAK CAN1_RX0_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN1_RX0_IRQHandler
B CAN1_RX0_IRQHandler
PUBWEAK CAN1_RX1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN1_RX1_IRQHandler
B CAN1_RX1_IRQHandler
PUBWEAK CAN1_SCE_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN1_SCE_IRQHandler
B CAN1_SCE_IRQHandler
PUBWEAK EXTI9_5_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI9_5_IRQHandler
B EXTI9_5_IRQHandler
PUBWEAK TIM1_BRK_TIM9_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM1_BRK_TIM9_IRQHandler
B TIM1_BRK_TIM9_IRQHandler
PUBWEAK TIM1_UP_TIM10_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM1_UP_TIM10_IRQHandler
B TIM1_UP_TIM10_IRQHandler
PUBWEAK TIM1_TRG_COM_TIM11_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM1_TRG_COM_TIM11_IRQHandler
B TIM1_TRG_COM_TIM11_IRQHandler
PUBWEAK TIM1_CC_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM1_CC_IRQHandler
B TIM1_CC_IRQHandler
PUBWEAK TIM2_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM2_IRQHandler
B TIM2_IRQHandler
PUBWEAK TIM3_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM3_IRQHandler
B TIM3_IRQHandler
PUBWEAK TIM4_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM4_IRQHandler
B TIM4_IRQHandler
PUBWEAK I2C1_EV_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
I2C1_EV_IRQHandler
B I2C1_EV_IRQHandler
PUBWEAK I2C1_ER_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
I2C1_ER_IRQHandler
B I2C1_ER_IRQHandler
PUBWEAK I2C2_EV_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
I2C2_EV_IRQHandler
B I2C2_EV_IRQHandler
PUBWEAK I2C2_ER_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
I2C2_ER_IRQHandler
B I2C2_ER_IRQHandler
PUBWEAK SPI1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
SPI1_IRQHandler
B SPI1_IRQHandler
PUBWEAK SPI2_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
SPI2_IRQHandler
B SPI2_IRQHandler
PUBWEAK USART1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
USART1_IRQHandler
B USART1_IRQHandler
PUBWEAK USART2_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
USART2_IRQHandler
B USART2_IRQHandler
PUBWEAK USART3_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
USART3_IRQHandler
B USART3_IRQHandler
PUBWEAK EXTI15_10_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
EXTI15_10_IRQHandler
B EXTI15_10_IRQHandler
PUBWEAK RTC_Alarm_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
RTC_Alarm_IRQHandler
B RTC_Alarm_IRQHandler
PUBWEAK OTG_FS_WKUP_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
OTG_FS_WKUP_IRQHandler
B OTG_FS_WKUP_IRQHandler
PUBWEAK TIM8_BRK_TIM12_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM8_BRK_TIM12_IRQHandler
B TIM8_BRK_TIM12_IRQHandler
PUBWEAK TIM8_UP_TIM13_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM8_UP_TIM13_IRQHandler
B TIM8_UP_TIM13_IRQHandler
PUBWEAK TIM8_TRG_COM_TIM14_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM8_TRG_COM_TIM14_IRQHandler
B TIM8_TRG_COM_TIM14_IRQHandler
PUBWEAK TIM8_CC_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM8_CC_IRQHandler
B TIM8_CC_IRQHandler
PUBWEAK DMA1_Stream7_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA1_Stream7_IRQHandler
B DMA1_Stream7_IRQHandler
PUBWEAK FSMC_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
FSMC_IRQHandler
B FSMC_IRQHandler
PUBWEAK SDIO_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
SDIO_IRQHandler
B SDIO_IRQHandler
PUBWEAK TIM5_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM5_IRQHandler
B TIM5_IRQHandler
PUBWEAK SPI3_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
SPI3_IRQHandler
B SPI3_IRQHandler
PUBWEAK UART4_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
UART4_IRQHandler
B UART4_IRQHandler
PUBWEAK UART5_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
UART5_IRQHandler
B UART5_IRQHandler
PUBWEAK TIM6_DAC_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM6_DAC_IRQHandler
B TIM6_DAC_IRQHandler
PUBWEAK TIM7_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
TIM7_IRQHandler
B TIM7_IRQHandler
PUBWEAK DMA2_Stream0_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream0_IRQHandler
B DMA2_Stream0_IRQHandler
PUBWEAK DMA2_Stream1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream1_IRQHandler
B DMA2_Stream1_IRQHandler
PUBWEAK DMA2_Stream2_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream2_IRQHandler
B DMA2_Stream2_IRQHandler
PUBWEAK DMA2_Stream3_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream3_IRQHandler
B DMA2_Stream3_IRQHandler
PUBWEAK DMA2_Stream4_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream4_IRQHandler
B DMA2_Stream4_IRQHandler
PUBWEAK ETH_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
ETH_IRQHandler
B ETH_IRQHandler
PUBWEAK ETH_WKUP_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
ETH_WKUP_IRQHandler
B ETH_WKUP_IRQHandler
PUBWEAK CAN2_TX_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN2_TX_IRQHandler
B CAN2_TX_IRQHandler
PUBWEAK CAN2_RX0_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN2_RX0_IRQHandler
B CAN2_RX0_IRQHandler
PUBWEAK CAN2_RX1_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN2_RX1_IRQHandler
B CAN2_RX1_IRQHandler
PUBWEAK CAN2_SCE_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
CAN2_SCE_IRQHandler
B CAN2_SCE_IRQHandler
PUBWEAK OTG_FS_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
OTG_FS_IRQHandler
B OTG_FS_IRQHandler
PUBWEAK DMA2_Stream5_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream5_IRQHandler
B DMA2_Stream5_IRQHandler
PUBWEAK DMA2_Stream6_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream6_IRQHandler
B DMA2_Stream6_IRQHandler
PUBWEAK DMA2_Stream7_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DMA2_Stream7_IRQHandler
B DMA2_Stream7_IRQHandler
PUBWEAK USART6_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
USART6_IRQHandler
B USART6_IRQHandler
PUBWEAK I2C3_EV_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
I2C3_EV_IRQHandler
B I2C3_EV_IRQHandler
PUBWEAK I2C3_ER_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
I2C3_ER_IRQHandler
B I2C3_ER_IRQHandler
PUBWEAK OTG_HS_EP1_OUT_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
OTG_HS_EP1_OUT_IRQHandler
B OTG_HS_EP1_OUT_IRQHandler
PUBWEAK OTG_HS_EP1_IN_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
OTG_HS_EP1_IN_IRQHandler
B OTG_HS_EP1_IN_IRQHandler
PUBWEAK OTG_HS_WKUP_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
OTG_HS_WKUP_IRQHandler
B OTG_HS_WKUP_IRQHandler
PUBWEAK OTG_HS_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
OTG_HS_IRQHandler
B OTG_HS_IRQHandler
PUBWEAK DCMI_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
DCMI_IRQHandler
B DCMI_IRQHandler
PUBWEAK HASH_RNG_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
HASH_RNG_IRQHandler
B HASH_RNG_IRQHandler
PUBWEAK FPU_IRQHandler
SECTION .text:CODE:REORDER:NOROOT(1)
FPU_IRQHandler
B FPU_IRQHandler
END
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