irq_timer.s

来自「ATEML公司EB40/40a/42/63/55开发板部分测试程序。」· S 代码 · 共 65 行

#------------------------------------------------------------------------------
#-         ATMEL Microcontroller Software Support  -  ROUSSET  -
#------------------------------------------------------------------------------
# The software is delivered "AS IS" without warranty or condition of any
# kind, either express, implied or statutory. This includes without
# limitation any warranty or condition with respect to merchantability or
# fitness for any particular purpose, or against the infringements of
# intellectual property rights of others.
#------------------------------------------------------------------------------
#- File source          : irq_timer.s
#- Object               : Assembler timer Interrupt Handler.
#-
#- 1.0 27/03/01 JPP     : Creation
#------------------------------------------------------------------------------

#            AREA        Irq, CODE, READONLY, INTERWORK

            .INCLUDE     "../../periph/aic/irq.mac"
#------------------------------------------------------------------------------
#- Function             : timer0_asm_irq_handler
#- Treatments           : Timer 0 interrupt handler.
#- Called Functions     : timer0_c_irq_handler
#- Called Macros        : IRQ_ENTRY, IRQ_EXIT
#------------------------------------------------------------------------------
            .GLOBAL      timer0_asm_irq_handler
            .EXTERN      timer0_c_irq_handler
            .EXTERN      TC0_DESC
timer0_asm_irq_handler:

#- Manage Exception Entry
        IRQ_ENTRY

#- Call the timer Interrupt C handler
            ldr         r1, =timer0_c_irq_handler
            ldr         r0, =TC0_DESC
            mov         r14, pc
            bx          r1
#- Manage Exception Exit	    
	    b		exit_irq

#------------------------------------------------------------------------------
#- Function             : timer1_asm_irq_handler
#- Treatments           : Timer 1 interrupt handler.
#- Called Functions     : timer1_c_irq_handler
#- Called Macros        : IRQ_ENTRY, IRQ_EXIT
#------------------------------------------------------------------------------
            .GLOBAL      timer1_asm_irq_handler
            .EXTERN      timer1_c_irq_handler
            .EXTERN      TC1_DESC
timer1_asm_irq_handler:

#- Manage Exception Entry
        IRQ_ENTRY

#- Call the timer Interrupt C handler
            ldr         r1, =timer1_c_irq_handler
            ldr         r0, =TC1_DESC
            mov         r14, pc
            bx          r1
exit_irq:
#- Manage Exception Exit
            IRQ_EXIT
           
            .END