git.sur5r.net Git - freertos/blob - Demo/ARM7_AT91SAM7S64_IAR/USB/USB_ISR.s79

   1                 RSEG ICODE:CODE\r
   2                 CODE32\r
   3 \r
   4                 EXTERN vUSB_ISR\r
   5                 PUBLIC vUSBISREntry\r
   6 \r
   7 ; Wrapper for the USB interrupt service routine.  This can cause a\r
   8 ; context switch so requires an assembly wrapper.\r
   9 \r
  10 ; Defines the portSAVE_CONTEXT and portRESTORE_CONTEXT macros.\r
  11 #include "ISR_Support.h"\r
  12 \r
  13 vUSBISREntry:\r
  14 \r
  15         portSAVE_CONTEXT                        ; Save the context of the current task.\r
  16 \r
  17         bl      vUSB_ISR                                ; Call the ISR routine.\r
  18 \r
  19         portRESTORE_CONTEXT                     ; Restore the context of the current task -\r
  20                                                                 ; which may be different to the task that\r
  21                                                                 ; was interrupted.\r
  22 \r
  23                 END\r
  24 \r