fork.h 1.3 KB

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  1. /* Copyright (C) 2002 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, write to the Free
  14. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  15. 02111-1307 USA. */
  16. #include <sysdep.h>
  17. #define ARCH_FORK() \
  18. ({ \
  19. register long __o0 __asm__ ("o0"); \
  20. register long __o1 __asm__ ("o1"); \
  21. register long __g1 __asm__ ("g1") = __NR_fork; \
  22. __asm__ __volatile__ (__SYSCALL_STRING \
  23. : "=r" (__g1), "=r" (__o0), "=r" (__o1) \
  24. : "0" (__g1) \
  25. : __SYSCALL_CLOBBERS); \
  26. __o0 == -1 ? __o0 : (__o0 & (__o1 - 1)); \
  27. })
  28. #include_next <fork.h>