td_thr_getgregs.c 1.9 KB

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  1. /* Get a thread's general register set.
  2. Copyright (C) 1999, 2000, 2001, 2002, 2003, 2007 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
  5. The GNU C Library is free software; you can redistribute it and/or
  6. modify it under the terms of the GNU Lesser General Public
  7. License as published by the Free Software Foundation; either
  8. version 2.1 of the License, or (at your option) any later version.
  9. The GNU C Library is distributed in the hope that it will be useful,
  10. but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. Lesser General Public License for more details.
  13. You should have received a copy of the GNU Lesser General Public
  14. License along with the GNU C Library; if not, see
  15. <http://www.gnu.org/licenses/>. */
  16. #include "thread_dbP.h"
  17. td_err_e
  18. td_thr_getgregs (const td_thrhandle_t *th, prgregset_t regset)
  19. {
  20. psaddr_t cancelhandling, tid;
  21. td_err_e err;
  22. LOG ("td_thr_getgregs");
  23. if (th->th_unique == 0)
  24. /* Special case for the main thread before initialization. */
  25. return ps_lgetregs (th->th_ta_p->ph, ps_getpid (th->th_ta_p->ph),
  26. regset) != PS_OK ? TD_ERR : TD_OK;
  27. /* We have to get the state and the PID for this thread. */
  28. err = DB_GET_FIELD (cancelhandling, th->th_ta_p, th->th_unique, pthread,
  29. cancelhandling, 0);
  30. if (err != TD_OK)
  31. return err;
  32. /* If the thread already terminated we return all zeroes. */
  33. if (((int) (uintptr_t) cancelhandling) & TERMINATED_BITMASK)
  34. memset (regset, '\0', sizeof (*regset));
  35. /* Otherwise get the register content through the callback. */
  36. else
  37. {
  38. err = DB_GET_FIELD (tid, th->th_ta_p, th->th_unique, pthread, tid, 0);
  39. if (err != TD_OK)
  40. return err;
  41. if (ps_lgetregs (th->th_ta_p->ph, (uintptr_t) tid, regset) != PS_OK)
  42. return TD_ERR;
  43. }
  44. return TD_OK;
  45. }