LXR linux/arch/sh/kernel/irq

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * SHmedia irqflags support
   4 *
   5 * Copyright (C) 2006 - 2009 Paul Mundt
   6 */
   7#include <linux/irqflags.h>
   8#include <linux/module.h>
   9#include <cpu/registers.h>
  10
  11void notrace arch_local_irq_restore(unsigned long flags)
  12{
  13        unsigned long long __dummy;
  14
  15        if (flags == ARCH_IRQ_DISABLED) {
  16                __asm__ __volatile__ (
  17                        "getcon " __SR ", %0\n\t"
  18                        "or     %0, %1, %0\n\t"
  19                        "putcon %0, " __SR "\n\t"
  20                        : "=&r" (__dummy)
  21                        : "r" (ARCH_IRQ_DISABLED)
  22                );
  23        } else {
  24                __asm__ __volatile__ (
  25                        "getcon " __SR ", %0\n\t"
  26                        "and    %0, %1, %0\n\t"
  27                        "putcon %0, " __SR "\n\t"
  28                        : "=&r" (__dummy)
  29                        : "r" (~ARCH_IRQ_DISABLED)
  30                );
  31        }
  32}
  33EXPORT_SYMBOL(arch_local_irq_restore);
  34
  35unsigned long notrace arch_local_save_flags(void)
  36{
  37        unsigned long flags;
  38
  39        __asm__ __volatile__ (
  40                "getcon " __SR ", %0\n\t"
  41                "and    %0, %1, %0"
  42                : "=&r" (flags)
  43                : "r" (ARCH_IRQ_DISABLED)
  44        );
  45
  46        return flags;
  47}
  48EXPORT_SYMBOL(arch_local_save_flags);
  49