arch/sh/kernel/irq_64.c

   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
  11 void 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 }
  33 EXPORT_SYMBOL(arch_local_irq_restore);
  34
  35 unsigned 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 }
  48 EXPORT_SYMBOL(arch_local_save_flags);