vfork.S 1.4 KB

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  1. /* Copyright (C) 2004 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
  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. #include <tcb-offsets.h>
  18. .text
  19. .globl __syscall_error
  20. ENTRY(__vfork)
  21. ld [%g7 + PID], %o5
  22. sethi %hi(0x80000000), %o3
  23. cmp %o5, 0
  24. sub %g0, %o5, %o4
  25. move %icc, %o3, %o4
  26. st %o4, [%g7 + PID]
  27. LOADSYSCALL(vfork)
  28. ta 0x6d
  29. bcc,pt %xcc, 2f
  30. mov %o7, %g1
  31. st %o5, [%g7 + PID]
  32. call __syscall_error
  33. mov %g1, %o7
  34. 2: sub %o1, 1, %o1
  35. andcc %o0, %o1, %o0
  36. bne,a,pt %icc, 1f
  37. st %o5, [%g7 + PID]
  38. 1: retl
  39. nop
  40. END(__vfork)
  41. hidden_def (vfork)
  42. weak_alias (__vfork, vfork)