include/asm-arm/arch-ebsa110/entry-macro.S

   1 /*
   2  * include/asm-arm/arch-ebsa110/entry-macro.S
   3  *
   4  * Low-level IRQ helper macros for ebsa110 platform.
   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
  12
  13 #define IRQ_STAT                0xff000000      /* read */
  14
  15         .macro  disable_fiq
  16         .endm
  17
  18         .macro  get_irqnr_preamble, base, tmp
  19         mov     \base, #IRQ_STAT
  20         .endm
  21
  22         .macro  arch_ret_to_user, tmp1, tmp2
  23         .endm
  24
  25         .macro  get_irqnr_and_base, irqnr, stat, base, tmp
  26         ldrb    \stat, [\base]                  @ get interrupts
  27         mov     \irqnr, #0
  28         tst     \stat, #15
  29         addeq   \irqnr, \irqnr, #4
  30         moveq   \stat, \stat, lsr #4
  31         tst     \stat, #3
  32         addeq   \irqnr, \irqnr, #2
  33         moveq   \stat, \stat, lsr #2
  34         tst     \stat, #1
  35         addeq   \irqnr, \irqnr, #1
  36         moveq   \stat, \stat, lsr #1
  37         tst     \stat, #1                       @ bit 0 should be set
  38         .endm
  39