usr/src/lib/libdwarf/common/dwarf_vars.c

   1 /*
   2
   3   Copyright (C) 2000,2002,2004,2005 Silicon Graphics, Inc.  All Rights Reserved.
   4   Portions Copyright (C) 2009-2010 David Anderson. All Rights Reserved.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms of version 2.1 of the GNU Lesser General Public License
   8   as published by the Free Software Foundation.
   9
  10   This program is distributed in the hope that it would be useful, but
  11   WITHOUT ANY WARRANTY; without even the implied warranty of
  12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13
  14   Further, this software is distributed without any warranty that it is
  15   free of the rightful claim of any third person regarding infringement
  16   or the like.  Any license provided herein, whether implied or
  17   otherwise, applies only to this software file.  Patent licenses, if
  18   any, provided herein do not apply to combinations of this program with
  19   other software, or any other product whatsoever.
  20
  21   You should have received a copy of the GNU Lesser General Public
  22   License along with this program; if not, write the Free Software
  23   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301,
  24   USA.
  25
  26   Contact information:  Silicon Graphics, Inc., 1500 Crittenden Lane,
  27   Mountain View, CA 94043, or:
  28
  29   http://www.sgi.com
  30
  31   For further information regarding this notice, see:
  32
  33   http://oss.sgi.com/projects/GenInfo/NoticeExplan
  34
  35 */
  36
  37
  38
  39 #include "config.h"
  40 #include "dwarf_incl.h"
  41 #include <stdio.h>
  42 #include "dwarf_vars.h"
  43 #include "dwarf_global.h"
  44
  45 int
  46 dwarf_get_vars(Dwarf_Debug dbg,
  47     Dwarf_Var ** vars,
  48     Dwarf_Signed * ret_var_count, Dwarf_Error * error)
  49 {
  50     int res = _dwarf_load_section(dbg, &dbg->de_debug_varnames,error);
  51     if (res != DW_DLV_OK) {
  52         return res;
  53     }
  54
  55     return _dwarf_internal_get_pubnames_like_data(dbg,
  56         dbg->de_debug_varnames.dss_data,
  57         dbg->de_debug_varnames.dss_size,
  58         (Dwarf_Global **) vars, /* Type punning for sections
  59             with identical format. */
  60         ret_var_count,
  61         error,
  62         DW_DLA_VAR_CONTEXT,
  63         DW_DLA_VAR,
  64         DW_DLE_DEBUG_VARNAMES_LENGTH_BAD,
  65         DW_DLE_DEBUG_VARNAMES_VERSION_ERROR);
  66 }
  67
  68 /* Deallocating fully requires deallocating the list
  69    and all entries.  But some internal data is
  70    not exposed, so we need a function with internal knowledge.
  71 */
  72
  73 void
  74 dwarf_vars_dealloc(Dwarf_Debug dbg, Dwarf_Var * dwgl,
  75                    Dwarf_Signed count)
  76 {
  77     _dwarf_internal_globals_dealloc(dbg, (Dwarf_Global *) dwgl,
  78         count,
  79         DW_DLA_VAR_CONTEXT,
  80         DW_DLA_VAR, DW_DLA_LIST);
  81     return;
  82 }
  83
  84
  85 int
  86 dwarf_varname(Dwarf_Var var_in, char **ret_varname, Dwarf_Error * error)
  87 {
  88     Dwarf_Global var = (Dwarf_Global) var_in;
  89
  90     if (var == NULL) {
  91         _dwarf_error(NULL, error, DW_DLE_VAR_NULL);
  92         return (DW_DLV_ERROR);
  93     }
  94
  95     *ret_varname = (char *) (var->gl_name);
  96     return DW_DLV_OK;
  97 }
  98
  99
 100 int
 101 dwarf_var_die_offset(Dwarf_Var var_in,
 102         Dwarf_Off * returned_offset, Dwarf_Error * error)
 103 {
 104     Dwarf_Global var = (Dwarf_Global) var_in;
 105
 106     return dwarf_global_die_offset(var, returned_offset, error);
 107
 108 }
 109
 110
 111 int
 112 dwarf_var_cu_offset(Dwarf_Var var_in,
 113                     Dwarf_Off * returned_offset, Dwarf_Error * error)
 114 {
 115     Dwarf_Global var = (Dwarf_Global) var_in;
 116
 117     return dwarf_global_cu_offset(var, returned_offset, error);
 118 }
 119
 120
 121 int
 122 dwarf_var_name_offsets(Dwarf_Var var_in,
 123         char **returned_name,
 124         Dwarf_Off * die_offset,
 125         Dwarf_Off * cu_offset, Dwarf_Error * error)
 126 {
 127     Dwarf_Global var = (Dwarf_Global) var_in;
 128
 129     return
 130         dwarf_global_name_offsets(var,
 131             returned_name, die_offset, cu_offset,
 132             error);
 133 }