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Viewing changes to arch/arm/mach-iop33x/include/mach/entry-macro.S

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

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arch/arm/mach-iop33x/include/mach/entry-macro.S
 
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/*
 
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 * arch/arm/mach-iop33x/include/mach/entry-macro.S
 
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 *
 
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 * Low-level IRQ helper macros for IOP33x-based platforms
 
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 *
 
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 * This file is licensed under the terms of the GNU General Public
 
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 * License version 2. This program is licensed "as is" without any
 
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 * warranty of any kind, whether express or implied.
 
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 */
 
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#include <mach/iop33x.h>
 
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        .macro  disable_fiq
 
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        .endm
 
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        .macro get_irqnr_preamble, base, tmp
 
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        mrc     p15, 0, \tmp, c15, c1, 0
 
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        orr     \tmp, \tmp, #(1 << 6)
 
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        mcr     p15, 0, \tmp, c15, c1, 0        @ Enable cp6 access
 
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        mrc     p15, 0, \tmp, c15, c1, 0
 
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        mov     \tmp, \tmp
 
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        sub     pc, pc, #4                      @ cp_wait
 
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        .endm
 
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        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
 
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        mrc     p6, 0, \irqstat, c14, c0, 0     @ Read IINTVEC
 
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        cmp     \irqstat, #0
 
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        mrceq   p6, 0, \irqstat, c14, c0, 0     @ erratum 63 workaround
 
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        adds    \irqnr, \irqstat, #1
 
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        movne   \irqnr, \irqstat, lsr #2
 
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        .endm
 
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        .macro arch_ret_to_user, tmp1, tmp2
 
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        mrc     p15, 0, \tmp1, c15, c1, 0
 
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        ands    \tmp2, \tmp1, #(1 << 6)
 
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        bicne   \tmp1, \tmp1, #(1 << 6)
 
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        mcrne   p15, 0, \tmp1, c15, c1, 0       @ Disable cp6 access
 
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        .endm