glibc/nptl_db/db_info.c

/* This file is included by pthread_create.c to define in libpthread
   all the magic symbols required by libthread_db.

   Copyright (C) 2003, 2004 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include "thread_dbP.h"
#include <tls.h>

typedef struct pthread pthread;
typedef struct pthread_key_struct pthread_key_struct;
typedef struct pthread_key_data pthread_key_data;
typedef struct
{
  struct pthread_key_data data[PTHREAD_KEY_2NDLEVEL_SIZE];
}
pthread_key_data_level2;

typedef struct
{
  union dtv dtv[UINT32_MAX / 2 / sizeof (union dtv)]; /* No constant bound.  */
} dtv;

typedef struct link_map link_map;


#define schedparam_sched_priority schedparam.sched_priority

#define eventbuf_eventmask eventbuf.eventmask
#define eventbuf_eventmask_event_bits eventbuf.eventmask.event_bits

#define DESC(name, offset, obj) \
  DB_DEFINE_DESC (name, 8 * sizeof (obj), 1, offset);
#define ARRAY_DESC(name, offset, obj) \
  DB_DEFINE_DESC (name, \
		  8 * sizeof (obj)[0], sizeof (obj) / sizeof (obj)[0], \
		  offset);

#if TLS_TCB_AT_TP
# define dtvp header.dtv
#elif TLS_DTV_AT_TP && TLS_TP_OFFSET > 0
/* Special case hack.  Really this #if should be TLS_TCB_SIZE == 0, but
   when untrue it's a sizeof expression, and that wouldn't fly.  In this
   flavor (PowerPC), there is no TCB containing the DTV at the TP, but
   actually the TCB lies behind the TP, i.e. at the very end of the area
   covered by TLS_PRE_TCB_SIZE.  */
DESC (_thread_db_pthread_dtvp,
      TLS_PRE_TCB_SIZE - sizeof (tcbhead_t) + offsetof (tcbhead_t, dtv),
      union dtv)
#elif TLS_DTV_AT_TP
/* Special case hack.  */
DESC (_thread_db_pthread_dtvp,
      TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv), union dtv)
#endif


#define DB_STRUCT(type) \
  const uint32_t _thread_db_sizeof_##type = sizeof (type);
#define DB_STRUCT_FIELD(type, field) \
  DESC (_thread_db_##type##_##field, \
	offsetof (type, field), ((type *) 0)->field)
#define DB_STRUCT_ARRAY_FIELD(type, field) \
  ARRAY_DESC (_thread_db_##type##_##field, \
	      offsetof (type, field), ((type *) 0)->field)
#define DB_VARIABLE(name) DESC (_thread_db_##name, 0, name)
#define DB_ARRAY_VARIABLE(name) ARRAY_DESC (_thread_db_##name, 0, name)
#define DB_SYMBOL(name)	/* Nothing.  */
#define DB_FUNCTION(name) /* Nothing.  */
#include "structs.def"
#undef DB_STRUCT
#undef DB_STRUCT_FIELD
#undef DB_SYMBOL
#undef DB_FUNCTION
#undef DB_VARIABLE
#undef DESC



#ifdef DB_THREAD_SELF
# ifdef DB_THREAD_SELF_INCLUDE
#  include DB_THREAD_SELF_INCLUDE
# endif

/* This macro is defined in the machine's tls.h using the three below.  */
# define CONST_THREAD_AREA(bits, value) \
  const uint32_t _thread_db_const_thread_area = (value);
# define REGISTER_THREAD_AREA(bits, regofs, scale) \
  DB_DEFINE_DESC (_thread_db_register##bits##_thread_area, \
		  bits, (scale), (regofs));
# define REGISTER(bits, size, regofs, bias) \
  DB_DEFINE_DESC (_thread_db_register##bits, size, (uint32_t)(bias), (regofs));

DB_THREAD_SELF
#endif