M7copy_from_user.S 723 B

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  1. /*
  2. * M7copy_from_user.S: SPARC M7 optimized copy from userspace.
  3. *
  4. * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
  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. #define FUNC_NAME M7copy_from_user
  24. #define LOAD(type,addr,dest) type##a [addr] %asi, dest
  25. #define EX_RETVAL(x) 0
  26. #ifdef __KERNEL__
  27. #define PREAMBLE \
  28. rd %asi, %g1; \
  29. cmp %g1, ASI_AIUS; \
  30. bne,pn %icc, raw_copy_in_user; \
  31. nop
  32. #endif
  33. #include "M7memcpy.S"