nptl_db/td_symbol_list.c

   1 /* Return list of symbols the library can request.
   2    Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <assert.h>
  22 #include <gnu/lib-names.h>
  23 #include "thread_dbP.h"
  24
  25
  26 #ifdef HAVE_ASM_GLOBAL_DOT_NAME
  27 # define DOT "."                /* PPC64 requires . prefix on code symbols.  */
  28 #else
  29 # define DOT                    /* No prefix.  */
  30 #endif
  31
  32 static const char *symbol_list_arr[] =
  33 {
  34 # define DB_STRUCT(type) \
  35   [SYM_SIZEOF_##type] = "_thread_db_sizeof_" #type,
  36 # define DB_STRUCT_FIELD(type, field) \
  37   [SYM_##type##_FIELD_##field] = "_thread_db_" #type "_" #field,
  38 # define DB_SYMBOL(name) \
  39   [SYM_##name] = #name,
  40 # define DB_FUNCTION(name) \
  41   [SYM_##name] = DOT #name,
  42 # define DB_VARIABLE(name) \
  43   [SYM_##name] = #name, \
  44   [SYM_DESC_##name] = "_thread_db_" #name,
  45 # include "structs.def"
  46 # undef DB_STRUCT
  47 # undef DB_FUNCTION
  48 # undef DB_SYMBOL
  49 # undef DB_VARIABLE
  50
  51   [SYM_TH_UNIQUE_CONST_THREAD_AREA] = "_thread_db_const_thread_area",
  52   [SYM_TH_UNIQUE_REGISTER64] = "_thread_db_register64",
  53   [SYM_TH_UNIQUE_REGISTER32] = "_thread_db_register32",
  54   [SYM_TH_UNIQUE_REGISTER32_THREAD_AREA] = "_thread_db_register32_thread_area",
  55   [SYM_TH_UNIQUE_REGISTER64_THREAD_AREA] = "_thread_db_register64_thread_area",
  56
  57   [SYM_NUM_MESSAGES] = NULL
  58 };
  59
  60
  61 const char **
  62 td_symbol_list (void)
  63 {
  64   return symbol_list_arr;
  65 }
  66
  67
  68 ps_err_e
  69 td_lookup (struct ps_prochandle *ps, int idx, psaddr_t *sym_addr)
  70 {
  71   ps_err_e result;
  72   assert (idx >= 0 && idx < SYM_NUM_MESSAGES);
  73   result = ps_pglobal_lookup (ps, LIBPTHREAD_SO, symbol_list_arr[idx],
  74                               sym_addr);
  75
  76 #ifdef HAVE_ASM_GLOBAL_DOT_NAME
  77   /* For PowerPC, 64-bit uses dot symbols but 32-bit does not.
  78      We could be a 64-bit libthread_db debugging a 32-bit libpthread.  */
  79   if (result == PS_NOSYM && symbol_list_arr[idx][0] == '.')
  80     result = ps_pglobal_lookup (ps, LIBPTHREAD_SO, &symbol_list_arr[idx][1],
  81                                 sym_addr);
  82 #endif
  83
  84   return result;
  85 }