xref: /illumos-gate/usr/src/lib/libdwarf/common/dwarf_funcs.c (revision 4d9fdb46b215739778ebc12079842c9905586999)
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 */
27 
28 #include "config.h"
29 #include <stdio.h>
30 #include "dwarf_incl.h"
31 #include "dwarf_error.h"
32 #include "dwarf_funcs.h"
33 #include "dwarf_global.h"
34 
35 int
dwarf_get_funcs(Dwarf_Debug dbg,Dwarf_Func ** funcs,Dwarf_Signed * ret_func_count,Dwarf_Error * error)36 dwarf_get_funcs(Dwarf_Debug dbg,
37     Dwarf_Func ** funcs,
38     Dwarf_Signed * ret_func_count, Dwarf_Error * error)
39 {
40     int res = _dwarf_load_section(dbg, &dbg->de_debug_funcnames,error);
41     if (res != DW_DLV_OK) {
42         return res;
43     }
44     if (!dbg->de_debug_funcnames.dss_size) {
45         return (DW_DLV_NO_ENTRY);
46     }
47 
48 
49     return _dwarf_internal_get_pubnames_like_data(dbg,
50         dbg->de_debug_funcnames.dss_data,
51         dbg->de_debug_funcnames.dss_size,
52         (Dwarf_Global **) funcs, /* Type punning for sections with identical format. */
53         ret_func_count,
54         error,
55         DW_DLA_FUNC_CONTEXT,
56         DW_DLA_FUNC,
57         DW_DLE_DEBUG_FUNCNAMES_LENGTH_BAD,
58         DW_DLE_DEBUG_FUNCNAMES_VERSION_ERROR);
59 }
60 
61 /* Deallocating fully requires deallocating the list
62    and all entries.  But some internal data is
63    not exposed, so we need a function with internal knowledge.
64 */
65 
66 void
dwarf_funcs_dealloc(Dwarf_Debug dbg,Dwarf_Func * dwgl,Dwarf_Signed count)67 dwarf_funcs_dealloc(Dwarf_Debug dbg, Dwarf_Func * dwgl,
68     Dwarf_Signed count)
69 {
70     _dwarf_internal_globals_dealloc(dbg, (Dwarf_Global *) dwgl,
71         count,
72         DW_DLA_FUNC_CONTEXT,
73         DW_DLA_FUNC, DW_DLA_LIST);
74     return;
75 }
76 
77 
78 
79 int
dwarf_funcname(Dwarf_Func func_in,char ** ret_name,Dwarf_Error * error)80 dwarf_funcname(Dwarf_Func func_in, char **ret_name, Dwarf_Error * error)
81 {
82     Dwarf_Global func = (Dwarf_Global) func_in;
83 
84     if (func == NULL) {
85         _dwarf_error(NULL, error, DW_DLE_FUNC_NULL);
86         return (DW_DLV_ERROR);
87     }
88 
89     *ret_name = (char *) (func->gl_name);
90     return DW_DLV_OK;
91 }
92 
93 int
dwarf_func_die_offset(Dwarf_Func func_in,Dwarf_Off * return_offset,Dwarf_Error * error)94 dwarf_func_die_offset(Dwarf_Func func_in,
95     Dwarf_Off * return_offset, Dwarf_Error * error)
96 {
97     Dwarf_Global func = (Dwarf_Global) func_in;
98 
99     return dwarf_global_die_offset(func, return_offset, error);
100 }
101 
102 
103 int
dwarf_func_cu_offset(Dwarf_Func func_in,Dwarf_Off * return_offset,Dwarf_Error * error)104 dwarf_func_cu_offset(Dwarf_Func func_in,
105     Dwarf_Off * return_offset, Dwarf_Error * error)
106 {
107     Dwarf_Global func = (Dwarf_Global) func_in;
108 
109     return dwarf_global_cu_offset(func, return_offset, error);
110 }
111 
112 
113 int
dwarf_func_name_offsets(Dwarf_Func func_in,char ** ret_func_name,Dwarf_Off * die_offset,Dwarf_Off * cu_die_offset,Dwarf_Error * error)114 dwarf_func_name_offsets(Dwarf_Func func_in,
115     char **ret_func_name,
116     Dwarf_Off * die_offset,
117     Dwarf_Off * cu_die_offset, Dwarf_Error * error)
118 {
119     Dwarf_Global func = (Dwarf_Global) func_in;
120 
121     return dwarf_global_name_offsets(func,
122         ret_func_name,
123         die_offset, cu_die_offset, error);
124 }
125