nptl_db/db_info.c

   1 /* This file is included by pthread_create.c to define in libpthread
   2    all the magic symbols required by libthread_db.
   3
   4    Copyright (C) 2003, 2004 Free Software Foundation, Inc.
   5    This file is part of the GNU C Library.
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Lesser General Public
   9    License as published by the Free Software Foundation; either
  10    version 2.1 of the License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with the GNU C Library; if not, write to the Free
  19    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  20    02111-1307 USA.  */
  21
  22 #include "thread_dbP.h"
  23 #include <tls.h>
  24
  25 typedef struct pthread pthread;
  26 typedef struct pthread_key_struct pthread_key_struct;
  27 typedef struct pthread_key_data pthread_key_data;
  28 typedef struct
  29 {
  30   struct pthread_key_data data[PTHREAD_KEY_2NDLEVEL_SIZE];
  31 }
  32 pthread_key_data_level2;
  33
  34 typedef struct
  35 {
  36   union dtv dtv[UINT32_MAX / 2 / sizeof (union dtv)]; /* No constant bound.  */
  37 } dtv;
  38
  39 typedef struct link_map link_map;
  40
  41
  42 #define schedparam_sched_priority schedparam.sched_priority
  43
  44 #define eventbuf_eventmask eventbuf.eventmask
  45 #define eventbuf_eventmask_event_bits eventbuf.eventmask.event_bits
  46
  47 #define DESC(name, offset, obj) \
  48   DB_DEFINE_DESC (name, 8 * sizeof (obj), 1, offset);
  49 #define ARRAY_DESC(name, offset, obj) \
  50   DB_DEFINE_DESC (name, \
  51                   8 * sizeof (obj)[0], sizeof (obj) / sizeof (obj)[0], \
  52                   offset);
  53
  54 #if TLS_TCB_AT_TP
  55 # define dtvp header.dtv
  56 #elif TLS_DTV_AT_TP
  57 /* Special case hack.  If TLS_TCB_SIZE == 0 (on PowerPC), there is no TCB
  58    containing the DTV at the TP, but actually the TCB lies behind the TP,
  59    i.e. at the very end of the area covered by TLS_PRE_TCB_SIZE.  */
  60 DESC (_thread_db_pthread_dtvp,
  61       TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv)
  62       - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv)
  63 #endif
  64
  65
  66 #define DB_STRUCT(type) \
  67   const uint32_t _thread_db_sizeof_##type = sizeof (type);
  68 #define DB_STRUCT_FIELD(type, field) \
  69   DESC (_thread_db_##type##_##field, \
  70         offsetof (type, field), ((type *) 0)->field)
  71 #define DB_STRUCT_ARRAY_FIELD(type, field) \
  72   ARRAY_DESC (_thread_db_##type##_##field, \
  73               offsetof (type, field), ((type *) 0)->field)
  74 #define DB_VARIABLE(name) DESC (_thread_db_##name, 0, name)
  75 #define DB_ARRAY_VARIABLE(name) ARRAY_DESC (_thread_db_##name, 0, name)
  76 #define DB_SYMBOL(name) /* Nothing.  */
  77 #define DB_FUNCTION(name) /* Nothing.  */
  78 #include "structs.def"
  79 #undef DB_STRUCT
  80 #undef DB_STRUCT_FIELD
  81 #undef DB_SYMBOL
  82 #undef DB_FUNCTION
  83 #undef DB_VARIABLE
  84 #undef DESC
  85
  86
  87
  88 #ifdef DB_THREAD_SELF
  89 # ifdef DB_THREAD_SELF_INCLUDE
  90 #  include DB_THREAD_SELF_INCLUDE
  91 # endif
  92
  93 /* This macro is defined in the machine's tls.h using the three below.  */
  94 # define CONST_THREAD_AREA(bits, value) \
  95   const uint32_t _thread_db_const_thread_area = (value);
  96 # define REGISTER_THREAD_AREA(bits, regofs, scale) \
  97   DB_DEFINE_DESC (_thread_db_register##bits##_thread_area, \
  98                   bits, (scale), (regofs));
  99 # define REGISTER(bits, size, regofs, bias) \
 100   DB_DEFINE_DESC (_thread_db_register##bits, size, (uint32_t)(bias), (regofs));
 101
 102 DB_THREAD_SELF
 103 #endif