LXR linux/arch/sh/kernel/irq

   1/*
   2 * SHmedia irqflags support
   3 *
   4 * Copyright (C) 2006 - 2009 Paul Mundt
   5 *
   6 * This file is subject to the terms and conditions of the GNU General Public
   7 * License. See the file "COPYING" in the main directory of this archive
   8 * for more details.
   9 */
  10#include <linux/irqflags.h>
  11#include <linux/module.h>
  12#include <cpu/registers.h>
  13
  14void notrace arch_local_irq_restore(unsigned long flags)
  15{
  16        unsigned long long __dummy;
  17
  18        if (flags == ARCH_IRQ_DISABLED) {
  19                __asm__ __volatile__ (
  20                        "getcon " __SR ", %0\n\t"
  21                        "or     %0, %1, %0\n\t"
  22                        "putcon %0, " __SR "\n\t"
  23                        : "=&r" (__dummy)
  24                        : "r" (ARCH_IRQ_DISABLED)
  25                );
  26        } else {
  27                __asm__ __volatile__ (
  28                        "getcon " __SR ", %0\n\t"
  29                        "and    %0, %1, %0\n\t"
  30                        "putcon %0, " __SR "\n\t"
  31                        : "=&r" (__dummy)
  32                        : "r" (~ARCH_IRQ_DISABLED)
  33                );
  34        }
  35}
  36EXPORT_SYMBOL(arch_local_irq_restore);
  37
  38unsigned long notrace arch_local_save_flags(void)
  39{
  40        unsigned long flags;
  41
  42        __asm__ __volatile__ (
  43                "getcon " __SR ", %0\n\t"
  44                "and    %0, %1, %0"
  45                : "=&r" (flags)
  46                : "r" (ARCH_IRQ_DISABLED)
  47        );
  48
  49        return flags;
  50}
  51EXPORT_SYMBOL(arch_local_save_flags);
  52