arch/xtensa/include/asm/system.h

   1 /*
   2  * Copyright (C) 2016 Cadence Design Systems Inc.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #ifndef _XTENSA_SYSTEM_H
   8 #define _XTENSA_SYSTEM_H
   9
  10 #include <asm/arch/core.h>
  11
  12 #if XCHAL_HAVE_INTERRUPTS
  13 #define local_irq_save(flags) \
  14         __asm__ __volatile__ ("rsil %0, %1" \
  15                               : "=a"(flags) \
  16                               : "I"(XCHAL_EXCM_LEVEL) \
  17                               : "memory")
  18 #define local_irq_restore(flags) \
  19         __asm__ __volatile__ ("wsr %0, ps\n\t" \
  20                               "rsync" \
  21                               :: "a"(flags) : "memory")
  22 #else
  23 #define local_irq_save(flags) ((void)(flags))
  24 #define local_irq_restore(flags) ((void)(flags))
  25 #endif
  26
  27 #endif