spr.h 991 B

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  1. /* SPDX-License-Identifier: GPL-2.0-or-later */
  2. /*
  3. * OpenRISC Linux
  4. *
  5. * Linux architectural port borrowing liberally from similar works of
  6. * others. All original copyrights apply as per the original source
  7. * declaration.
  8. *
  9. * OpenRISC implementation:
  10. * Copyright (C) 2010-2011 Jonas Bonn <[email protected]>
  11. */
  12. #ifndef __ASM_OPENRISC_SPR_H
  13. #define __ASM_OPENRISC_SPR_H
  14. #define mtspr(_spr, _val) __asm__ __volatile__ ( \
  15. "l.mtspr r0,%1,%0" \
  16. : : "K" (_spr), "r" (_val))
  17. #define mtspr_off(_spr, _off, _val) __asm__ __volatile__ ( \
  18. "l.mtspr %0,%1,%2" \
  19. : : "r" (_off), "r" (_val), "K" (_spr))
  20. static inline unsigned long mfspr(unsigned long add)
  21. {
  22. unsigned long ret;
  23. __asm__ __volatile__ ("l.mfspr %0,r0,%1" : "=r" (ret) : "K" (add));
  24. return ret;
  25. }
  26. static inline unsigned long mfspr_off(unsigned long add, unsigned long offset)
  27. {
  28. unsigned long ret;
  29. __asm__ __volatile__ ("l.mfspr %0,%1,%2" : "=r" (ret)
  30. : "r" (offset), "K" (add));
  31. return ret;
  32. }
  33. #endif