pt-vfork.S 1.1 KB

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  1. /* Copyright (C) 2004 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  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 <tcb-offsets.h>
  15. #define SAVE_PID \
  16. movl %fs:PID, %esi; \
  17. movl %esi, %edx; \
  18. negl %edx; \
  19. movl %edx, %fs:PID
  20. #define RESTORE_PID \
  21. testq %rax, %rax; \
  22. je 1f; \
  23. movl %esi, %fs:PID; \
  24. 1:
  25. #include <../../../../../../../libc/sysdeps/linux/x86_64/vfork.S>