xref: /illumos-gate/usr/src/lib/libdwarf/common/dwarf_funcs.c (revision 077efea49519c17f19d69473223f9664f3c94812)
1  /*
2  
3    Copyright (C) 2000-2005 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_funcs.h"
43  #include "dwarf_global.h"
44  
45  int
46  dwarf_get_funcs(Dwarf_Debug dbg,
47      Dwarf_Func ** funcs,
48      Dwarf_Signed * ret_func_count, Dwarf_Error * error)
49  {
50      int res = _dwarf_load_section(dbg, &dbg->de_debug_funcnames,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_funcnames.dss_data,
57          dbg->de_debug_funcnames.dss_size,
58          (Dwarf_Global **) funcs, /* Type punning for sections with identical format. */
59          ret_func_count,
60          error,
61          DW_DLA_FUNC_CONTEXT,
62          DW_DLA_FUNC,
63          DW_DLE_DEBUG_FUNCNAMES_LENGTH_BAD,
64          DW_DLE_DEBUG_FUNCNAMES_VERSION_ERROR);
65  }
66  
67  /* Deallocating fully requires deallocating the list
68     and all entries.  But some internal data is
69     not exposed, so we need a function with internal knowledge.
70  */
71  
72  void
73  dwarf_funcs_dealloc(Dwarf_Debug dbg, Dwarf_Func * dwgl,
74      Dwarf_Signed count)
75  {
76      _dwarf_internal_globals_dealloc(dbg, (Dwarf_Global *) dwgl,
77          count,
78          DW_DLA_FUNC_CONTEXT,
79          DW_DLA_FUNC, DW_DLA_LIST);
80      return;
81  }
82  
83  
84  
85  int
86  dwarf_funcname(Dwarf_Func func_in, char **ret_name, Dwarf_Error * error)
87  {
88      Dwarf_Global func = (Dwarf_Global) func_in;
89  
90      if (func == NULL) {
91          _dwarf_error(NULL, error, DW_DLE_FUNC_NULL);
92          return (DW_DLV_ERROR);
93      }
94  
95      *ret_name = (char *) (func->gl_name);
96      return DW_DLV_OK;
97  }
98  
99  int
100  dwarf_func_die_offset(Dwarf_Func func_in,
101      Dwarf_Off * return_offset, Dwarf_Error * error)
102  {
103      Dwarf_Global func = (Dwarf_Global) func_in;
104  
105      return dwarf_global_die_offset(func, return_offset, error);
106  }
107  
108  
109  int
110  dwarf_func_cu_offset(Dwarf_Func func_in,
111      Dwarf_Off * return_offset, Dwarf_Error * error)
112  {
113      Dwarf_Global func = (Dwarf_Global) func_in;
114  
115      return dwarf_global_cu_offset(func, return_offset, error);
116  }
117  
118  
119  int
120  dwarf_func_name_offsets(Dwarf_Func func_in,
121      char **ret_func_name,
122      Dwarf_Off * die_offset,
123      Dwarf_Off * cu_die_offset, Dwarf_Error * error)
124  {
125      Dwarf_Global func = (Dwarf_Global) func_in;
126  
127      return dwarf_global_name_offsets(func,
128          ret_func_name,
129          die_offset, cu_die_offset, error);
130  }
131