release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-ixp23xx/include/mach/entry-macro.S

   1 /*
   2  * arch/arm/mach-ixp23xx/include/mach/entry-macro.S
   3  */
   4
   5                 .macro  disable_fiq
   6                 .endm
   7
   8                 .macro  get_irqnr_preamble, base, tmp
   9                 .endm
  10
  11                 .macro  arch_ret_to_user, tmp1, tmp2
  12                 .endm
  13
  14                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  15                 ldr     \irqnr, =(IXP23XX_INTC_VIRT + IXP23XX_INTR_IRQ_ENC_ST_OFFSET)
  16                 ldr     \irqnr, [\irqnr]        @ get interrupt number
  17                 cmp     \irqnr, #0x0            @ spurious interrupt ?
  18                 movne   \irqnr, \irqnr, lsr #2  @ skip unwanted low order bits
  19                 subne   \irqnr, \irqnr, #1      @ convert to 0 based
  20
  21                 .endm