td_thr_getgregs.c 1.8 KB

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  1. /* Get a thread's general register set.
  2. Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. Contributed by Ulrich Drepper <drepper@cygnus.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, write to the Free
  15. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  16. 02111-1307 USA. */
  17. #include "thread_dbP.h"
  18. td_err_e
  19. td_thr_getgregs (const td_thrhandle_t *th, prgregset_t gregs)
  20. {
  21. struct _pthread_descr_struct pds;
  22. LOG ("td_thr_getgregs");
  23. if (th->th_unique == NULL)
  24. {
  25. /* No data yet. */
  26. memset (gregs, '\0', sizeof (prgregset_t));
  27. return TD_OK;
  28. }
  29. /* We have to get the state and the PID for this thread. */
  30. if (ps_pdread (th->th_ta_p->ph, th->th_unique, &pds,
  31. sizeof (struct _pthread_descr_struct)) != PS_OK)
  32. return TD_ERR;
  33. /* If the thread already terminated we return all zeroes. */
  34. if (pds.p_terminated)
  35. memset (gregs, '\0', sizeof (prgregset_t));
  36. /* Otherwise get the register content through the callback. */
  37. else
  38. {
  39. pid_t pid = pds.p_pid ?: ps_getpid (th->th_ta_p->ph);
  40. if (ps_lgetregs (th->th_ta_p->ph, pid, gregs) != PS_OK)
  41. return TD_ERR;
  42. }
  43. return TD_OK;
  44. }