75x_vect.s

ST的ARM7芯片完整DEMO程序。 具备点阵液晶显示器

;*******************************************************************************
;* Function Name  : DataAbortHandler
;* Description    : This function is called when Data Abort exception is entered.
;* Input          : none
;* Output         : none
;*******************************************************************************
DataAbortHandler
        SUB    lr,lr,#8       ; Update the link register.
        SaveContext r0,r12    ; Save the workspace plus the current
                              ; return address lr_ abt and spsr_abt.
        BL     Abort_Handler  ; Branch to Abort_Handler.
        RestoreContext r0,r12 ; Return to the instruction following that...
                              ; ...has generated the data abort exception.

;*******************************************************************************
;* Function Name  : FIQHandler
;* Description    : This function is called when FIQ exception is entered.
;* Input          : none
;* Output         : none
;*******************************************************************************
FIQHandler
        SUB    lr,lr,#4       ; Update the link register.
        SaveContext r0,r7     ; Save the workspace plus the current
                              ; return address lr_ fiq and spsr_fiq.
        BL      FIQ_Handler   ; Branch to FIQ_Handler.
        RestoreContext r0,r7  ; Restore the context and return to the...
                              ; ...program execution.

;*******************************************************************************
;* Macro Name     : IRQ_to_SYS
;* Description    : This macro used to switch form IRQ mode to SYS mode.
;* Input          : none.
;* Output         : none
;*******************************************************************************
       MACRO
       IRQ_to_SYS
        MSR    cpsr_c,#0x1F
        STMFD  sp!,{lr}
       MEND

;*******************************************************************************
;* Macro Name     : SYS_to_IRQ
;* Description    : This macro used to switch from SYS mode to IRQ mode.
;* Input          : none.
;* Output         : none
;*******************************************************************************
       MACRO
        SYS_to_IRQ
        LDMFD  sp!,{lr}
        MSR    cpsr_c,#0xD2
        MOV    pc,lr
       MEND

;*******************************************************************************
;* Function Name  : WAKUPIRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the WAKUP_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the WAKUP_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
WAKUPIRQHandler
        IRQ_to_SYS
        BL     WAKUP_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : TIM2_OC2IRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the TIM3_OC2_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the TIM2_OC2_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
TIM2_OC2IRQHandler
        IRQ_to_SYS
        BL     TIM2_OC2_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : TIM2_OC1IRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the TIM2_OC1_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the TIM2_OC1_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
TIM2_OC1IRQHandler
        IRQ_to_SYS
        BL     TIM2_OC1_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : TIM2_IC12IRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the TIM2_IC12_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the TIM2_IC12_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
TIM2_IC12IRQHandler
        IRQ_to_SYS
        BL     TIM2_IC12_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : TIM2_UPIRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the TIM2_UP_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the TIM3_UP_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
TIM2_UPIRQHandler
        IRQ_to_SYS
        BL     TIM2_UP_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : TIM1_OC2IRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the TIM1_OC2_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the TIM1_OC2_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
TIM1_OC2IRQHandler
        IRQ_to_SYS
        BL     TIM1_OC2_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : TIM1_OC1IRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the TIM1_OC1_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the TIM1_OC1_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
TIM1_OC1IRQHandler
        IRQ_to_SYS
        BL     TIM1_OC1_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : TIM1_IC12IRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the TIM1_IC12_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the TIM1_IC12_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
TIM1_IC12IRQHandler
        IRQ_to_SYS
        BL     TIM1_IC12_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : TIM1_UPIRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the TIM1_UP_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the TIM1_UP_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
TIM1_UPIRQHandler
        IRQ_to_SYS
        BL     TIM1_UP_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : TIM0_OC2IRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the TIM0_OC2_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the TIM0_OC2_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
TIM0_OC2IRQHandler
        IRQ_to_SYS
        BL     TIM0_OC2_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : TIM0_OC1IRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the TIM0_OC1_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the TIM0_OC1_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
TIM0_OC1IRQHandler
        IRQ_to_SYS
        BL     TIM0_OC1_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : TIM0_IC12IRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the TIM0_IC12_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the TIM0_IC12_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
TIM0_IC12IRQHandler
        IRQ_to_SYS
        BL     TIM0_IC12_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : TIM0_UPIRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the TIM0_UP_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the TIM0_UP_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
TIM0_UPIRQHandler
        IRQ_to_SYS
        BL     TIM0_UP_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : PWM_OC123IRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the PWM_OC123_IRQHandler function located in 75x_it.c.
;*                  Then to return to IRQ mode after the PWM_OC123_IRQHandler
;*                  function termination.
;* Input          : none
;* Output         : none
;*******************************************************************************
PWM_OC123IRQHandler
        IRQ_to_SYS
        BL     PWM_OC123_IRQHandler
        SYS_to_IRQ

;*******************************************************************************
;* Function Name  : PWM_EMIRQHandler
;* Description    : This function used to switch to SYS mode before entering
;*                  the PWM_EM_IRQHandler function located in 75x_it.c.