include/asm-arm/arch-aaec2000/entry-macro.S

   1 /*
   2  *  linux/include/asm-arm/arch-aaec2000/entry-macro.S
   3  *
   4  *  Low-level IRQ helper for aaec-2000 based platforms
   5  *
   6  *  Copyright (c) 2005 Nicolas Bellido Y Ortega
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation.
  11  *
  12  */
  13 #include <asm/arch/irqs.h>
  14
  15                 .macro  disable_fiq
  16                 .endm
  17
  18                 .macro  get_irqnr_preamble, base, tmp
  19                 .endm
  20
  21                 .macro  arch_ret_to_user, tmp1, tmp2
  22                 .endm
  23
  24                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
  25                 mov     r4, #0xf8000000
  26                 add     r4, r4, #0x00000500
  27                 mov     \base, r4
  28                 ldr     \irqstat, [\base, #0]
  29                 cmp     \irqstat, #0
  30                 bne     1001f
  31                 ldr     \irqnr, =NR_IRQS+1
  32                 b       1003f
  33 1001:           mov     \irqnr, #0
  34 1002:           ands    \tmp, \irqstat, #1
  35                 mov     \irqstat, \irqstat, LSR #1
  36                 add     \irqnr, \irqnr, #1
  37                 beq     1002b
  38                 sub     \irqnr, \irqnr, #1
  39 1003:
  40                 .endm