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Text File  |  2008-12-24  |  898 b   |  41 lines
  1. /*
  2.  *  arch/arm/mach-aaec2000/include/mach/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 <mach/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
  41.