db_info.c 3.5 KB

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  1. /* This file is included by pthread_create.c to define in libpthread
  2. all the magic symbols required by libthread_db.
  3. Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.
  4. This file is part of the GNU C Library.
  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. #include <tls.h>
  18. typedef struct pthread pthread;
  19. typedef struct pthread_key_struct pthread_key_struct;
  20. typedef struct pthread_key_data pthread_key_data;
  21. typedef struct
  22. {
  23. struct pthread_key_data data[PTHREAD_KEY_2NDLEVEL_SIZE];
  24. }
  25. pthread_key_data_level2;
  26. typedef struct
  27. {
  28. union dtv dtv[UINT32_MAX / 2 / sizeof (union dtv)]; /* No constant bound. */
  29. } dtv;
  30. typedef struct link_map link_map;
  31. /* Actually static in nptl/init.c, but we only need it for typeof. */
  32. extern bool __nptl_initial_report_events;
  33. #define schedparam_sched_priority schedparam.sched_priority
  34. #define eventbuf_eventmask eventbuf.eventmask
  35. #define eventbuf_eventmask_event_bits eventbuf.eventmask.event_bits
  36. #define DESC(name, offset, obj) \
  37. DB_DEFINE_DESC (name, 8 * sizeof (obj), 1, offset);
  38. #define ARRAY_DESC(name, offset, obj) \
  39. DB_DEFINE_DESC (name, \
  40. 8 * sizeof (obj)[0], sizeof (obj) / sizeof (obj)[0], \
  41. offset);
  42. #if defined(TLS_TCB_AT_TP)
  43. # define dtvp header.dtv
  44. #elif defined(TLS_DTV_AT_TP)
  45. /* Special case hack. If TLS_TCB_SIZE == 0 (on PowerPC), there is no TCB
  46. containing the DTV at the TP, but actually the TCB lies behind the TP,
  47. i.e. at the very end of the area covered by TLS_PRE_TCB_SIZE. */
  48. DESC (_thread_db_pthread_dtvp,
  49. TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv)
  50. - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv *)
  51. #endif
  52. #define DB_STRUCT(type) \
  53. const uint32_t _thread_db_sizeof_##type = sizeof (type);
  54. #define DB_STRUCT_FIELD(type, field) \
  55. DESC (_thread_db_##type##_##field, \
  56. offsetof (type, field), ((type *) 0)->field)
  57. #define DB_STRUCT_ARRAY_FIELD(type, field) \
  58. ARRAY_DESC (_thread_db_##type##_##field, \
  59. offsetof (type, field), ((type *) 0)->field)
  60. #define DB_VARIABLE(name) DESC (_thread_db_##name, 0, name)
  61. #define DB_ARRAY_VARIABLE(name) ARRAY_DESC (_thread_db_##name, 0, name)
  62. #define DB_SYMBOL(name) /* Nothing. */
  63. #define DB_FUNCTION(name) /* Nothing. */
  64. #include "structs.def"
  65. #undef DB_STRUCT
  66. #undef DB_STRUCT_FIELD
  67. #undef DB_SYMBOL
  68. #undef DB_FUNCTION
  69. #undef DB_VARIABLE
  70. #undef DESC
  71. #ifdef DB_THREAD_SELF
  72. # ifdef DB_THREAD_SELF_INCLUDE
  73. # include DB_THREAD_SELF_INCLUDE
  74. # endif
  75. /* This macro is defined in the machine's tls.h using the three below. */
  76. # define CONST_THREAD_AREA(bits, value) \
  77. const uint32_t _thread_db_const_thread_area = (value);
  78. # define REGISTER_THREAD_AREA(bits, regofs, scale) \
  79. DB_DEFINE_DESC (_thread_db_register##bits##_thread_area, \
  80. bits, (scale), (regofs));
  81. # define REGISTER(bits, size, regofs, bias) \
  82. DB_DEFINE_DESC (_thread_db_register##bits, size, (uint32_t)(bias), (regofs));
  83. DB_THREAD_SELF
  84. #endif