include/asm-arm/arch-orion/entry-macro.S

   1 /*
   2  * include/asm-arm/arch-orion/entry-macro.S
   3  *
   4  * Low-level IRQ helper macros for Orion platforms
   5  *
   6  * This file is licensed under the terms of the GNU General Public
   7  * License version 2.  This program is licensed "as is" without any
   8  * warranty of any kind, whether express or implied.
   9  */
  10
  11 #include <asm/arch/orion.h>
  12
  13         .macro  disable_fiq
  14         .endm
  15
  16         .macro  arch_ret_to_user, tmp1, tmp2
  17         .endm
  18
  19         .macro  get_irqnr_preamble, base, tmp
  20         ldr     \base, =MAIN_IRQ_CAUSE
  21         .endm
  22
  23         .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  24         ldr     \irqstat, [\base, #0]           @ main cause
  25         ldr     \tmp, [\base, #(MAIN_IRQ_MASK - MAIN_IRQ_CAUSE)] @ main mask
  26         mov     \irqnr, #0                      @ default irqnr
  27         @ find cause bits that are unmasked
  28         ands    \irqstat, \irqstat, \tmp        @ clear Z flag if any
  29         clzne   \irqnr, \irqstat                @ calc irqnr
  30         rsbne   \irqnr, \irqnr, #31
  31         .endm