vfork.S 1.1 KB

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  1. /* Copyright (C) 2004-2017 Free Software Foundation, Inc.
  2. Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, see
  13. <http://www.gnu.org/licenses/>. */
  14. #include <sysdep.h>
  15. .text
  16. .globl __syscall_error
  17. ENTRY(__vfork)
  18. LOADSYSCALL(vfork)
  19. ta 0x6d
  20. bcc,pt %xcc, 2f
  21. mov %o7, %g1
  22. call __syscall_error
  23. mov %g1, %o7
  24. 2: sub %o1, 1, %o1
  25. andcc %o0, %o1, %o0
  26. 1: retl
  27. nop
  28. END(__vfork)
  29. weak_alias(__vfork,vfork)
  30. libc_hidden_def(vfork)