ifunc.h 2.4 KB

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  1. /*-
  2. * Copyright (c) 2015-2018 The FreeBSD Foundation
  3. * Copyright (c) 2024 Jessica Clarke <jrtc27@FreeBSD.org>
  4. *
  5. * Part of this software was developed by Konstantin Belousov <kib@FreeBSD.org>
  6. * under sponsorship from the FreeBSD Foundation.
  7. *
  8. * Redistribution and use in source and binary forms, with or without
  9. * modification, are permitted provided that the following conditions
  10. * are met:
  11. * 1. Redistributions of source code must retain the above copyright
  12. * notice, this list of conditions and the following disclaimer.
  13. * 2. Redistributions in binary form must reproduce the above copyright
  14. * notice, this list of conditions and the following disclaimer in the
  15. * documentation and/or other materials provided with the distribution.
  16. *
  17. * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20. * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27. * SUCH DAMAGE.
  28. */
  29. #ifndef __RISCV_IFUNC_H
  30. #define __RISCV_IFUNC_H
  31. #define DEFINE_IFUNC(qual, ret_type, name, args) \
  32. static ret_type (*name##_resolver(void))args __used; \
  33. qual ret_type name args __attribute__((ifunc(#name "_resolver"))); \
  34. static ret_type (*name##_resolver(void))args
  35. #define DEFINE_UIFUNC(qual, ret_type, name, args) \
  36. static ret_type (*name##_resolver(unsigned long, unsigned long, \
  37. unsigned long, unsigned long, unsigned long, unsigned long, \
  38. unsigned long, unsigned long))args __used; \
  39. qual ret_type name args __attribute__((ifunc(#name "_resolver"))); \
  40. static ret_type (*name##_resolver(unsigned long elf_hwcap __unused, \
  41. unsigned long _arg2 __unused, unsigned long _arg3 __unused, \
  42. unsigned long _arg4 __unused, unsigned long _arg5 __unused, \
  43. unsigned long _arg6 __unused, unsigned long _arg7 __unused, \
  44. unsigned long _arg8 __unused))args
  45. #endif