NG2copy_from_user.S 857 B

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. /* NG2copy_from_user.S: Niagara-2 optimized copy from userspace.
  3. *
  4. * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
  5. */
  6. #define EX_LD(x,y) \
  7. 98: x; \
  8. .section __ex_table,"a";\
  9. .align 4; \
  10. .word 98b, y; \
  11. .text; \
  12. .align 4;
  13. #define EX_LD_FP(x,y) \
  14. 98: x; \
  15. .section __ex_table,"a";\
  16. .align 4; \
  17. .word 98b, y##_fp; \
  18. .text; \
  19. .align 4;
  20. #ifndef ASI_AIUS
  21. #define ASI_AIUS 0x11
  22. #endif
  23. #ifndef ASI_BLK_AIUS_4V
  24. #define ASI_BLK_AIUS_4V 0x17
  25. #endif
  26. #define FUNC_NAME NG2copy_from_user
  27. #define LOAD(type,addr,dest) type##a [addr] %asi, dest
  28. #define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_AIUS_4V, dest
  29. #define EX_RETVAL(x) 0
  30. #ifdef __KERNEL__
  31. #define PREAMBLE \
  32. rd %asi, %g1; \
  33. cmp %g1, ASI_AIUS; \
  34. bne,pn %icc, raw_copy_in_user; \
  35. nop
  36. #endif
  37. #include "NG2memcpy.S"