stm32中断向量表初探

矫情吗；* 2022-08-25 08:25 138阅读 0赞

cortex-M3的异常向量表中的内容并不是指令，0x00000000处（当然也可能映射到别的范围）是主堆栈指针的数值，0x00000004的内容是复位后需要跳转到的地址，是一个地址而不是一条指令。

0x08000000数据如下（memory 窗口查看--STM32小端）：

10 02 00 20   05 19 00 08

AREA    RESET, DATA, READONLY  
                EXPORT  \_\_Vectors  
\_\_Vectors       DCD     \_\_initial\_sp              //0x20000210; Top of Stack  
                DCD     Reset\_Handler             //0x08001905; Reset Handler---最后跳转到main函数  
                DCD     NMI\_Handler               //0x08001909; NMI Handler  
                DCD     HardFault\_Handler         //0x0800190B; Hard Fault Handler  
                DCD     MemManage\_Handler         //0x0800190D; MPU Fault Handler  
                DCD     BusFault\_Handler          //0x0800190F; Bus Fault Handler  
                DCD     UsageFault\_Handler        //0x08001911; Usage Fault Handler  
                DCD     0                         //0x00000000 ; Reserved  
                DCD     0                         //0x00000000; Reserved  
                DCD     0                         //0x00000000; Reserved  
                DCD     0                         //0x00000000; Reserved  
                DCD     SVC\_Handler               //0x08001913; SVCall Handler  
                DCD     DebugMon\_Handler          //0x08001915; Debug Monitor Handler  
                DCD     0                         ; Reserved  
                DCD     PendSV\_Handler            //0x08001917; PendSV Handler  
                DCD     SysTick\_Handler           //0x08000101; SysTick Handler

; External Interrupts  
                DCD     WWDG\_IRQHandler           //0x0800191B; Window Watchdog  
                DCD     PVD\_IRQHandler            //0x0800191B; PVD through EXTI Line detect  
                DCD     TAMPER\_IRQHandler         //0x0800191B; Tamper  
                DCD     RTC\_IRQHandler            //0x0800191B; RTC  
                DCD     FLASH\_IRQHandler          //0x0800191B; Flash  
                DCD     RCC\_IRQHandler            //0x0800191B; RCC  
                DCD     EXTI0\_IRQHandler          //0x0800191B; EXTI Line 0  
                DCD     EXTI1\_IRQHandler          //0x0800191B; EXTI Line 1  
                DCD     EXTI2\_IRQHandler          //0x0800191B; EXTI Line 2  
                DCD     EXTI3\_IRQHandler          //0x0800191B; EXTI Line 3  
                DCD     EXTI4\_IRQHandler          //0x0800191B; EXTI Line 4  
                DCD     DMAChannel1\_IRQHandler    //0x0800191B; DMA Channel 1  
                DCD     DMAChannel2\_IRQHandler    //0x0800191B; DMA Channel 2  
                DCD     DMAChannel3\_IRQHandler    //0x0800191B; DMA Channel 3  
                DCD     DMAChannel4\_IRQHandler    //0x0800191B; DMA Channel 4  
                DCD     DMAChannel5\_IRQHandler    //0x0800191B; DMA Channel 5  
                DCD     DMAChannel6\_IRQHandler    //0x0800191B; DMA Channel 6  
                DCD     DMAChannel7\_IRQHandler    //0x0800191B; DMA Channel 7  
                DCD     ADC\_IRQHandler            //0x0800191B; ADC  
                DCD     USB\_HP\_CAN\_TX\_IRQHandler  //0x0800191B; USB High Priority or CAN TX  
                DCD     USB\_LP\_CAN\_RX0\_IRQHandler //0x0800191B; USB Low  Priority or CAN RX0  
                DCD     CAN\_RX1\_IRQHandler        //0x0800191B; CAN RX1  
                DCD     CAN\_SCE\_IRQHandler        //0x0800191B; CAN SCE  
                DCD     EXTI9\_5\_IRQHandler        //0x0800191B; EXTI Line 9..5  
                DCD     TIM1\_BRK\_IRQHandler       //0x0800191B; TIM1 Break  
                DCD     TIM1\_UP\_IRQHandler        //0x0800191B; TIM1 Update  
                DCD     TIM1\_TRG\_COM\_IRQHandler   //0x0800191B; TIM1 Trigger and Commutation  
                DCD     TIM1\_CC\_IRQHandler        //0x0800191B; TIM1 Capture Compare  
                DCD     TIM2\_IRQHandler           //0x0800191B; TIM2  
                DCD     TIM3\_IRQHandler           //0x0800191B; TIM3  
                DCD     TIM4\_IRQHandler           //0x0800191B; TIM4  
                DCD     I2C1\_EV\_IRQHandler        //0x0800191B ; I2C1 Event  
                DCD     I2C1\_ER\_IRQHandler        //0x0800191B; I2C1 Error  
                DCD     I2C2\_EV\_IRQHandler        //0x0800191B ; I2C2 Event  
                DCD     I2C2\_ER\_IRQHandler        //0x0800191B ; I2C2 Error  
                DCD     SPI1\_IRQHandler           //0x0800191B ; SPI1  
                DCD     SPI2\_IRQHandler           //0x0800191B ; SPI2  
                DCD     USART1\_IRQHandler         //0x0800191B ; USART1  
                DCD     USART2\_IRQHandler         //0x0800191B ; USART2  
                DCD     USART3\_IRQHandler         //0x0800191B ; USART3  
                DCD     EXTI15\_10\_IRQHandler      //0x0800191B ; EXTI Line 15..10  
                DCD     RTCAlarm\_IRQHandler       //0x0800191B ; RTC Alarm through EXTI Line  
0x080000EA      DCD     USBWakeUp\_IRQHandler      //0x0800191B ; USB Wakeup from suspend

0x08003608 0x20000000 0x00000010  
0x08003618 0x20000010 0x00000200