1 .\" Copyright (c) 2011 Kai Wang
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25 .\" $Id: dwarf_get_funcs.3 3644 2018-10-15 19:55:01Z jkoshy $
32 .Nm dwarf_func_cu_offset ,
33 .Nm dwarf_func_die_offset ,
34 .Nm dwarf_func_name_offsets ,
36 .Nd retrieve information about static functions
44 .Fa "Dwarf_Func **funcs"
45 .Fa "Dwarf_Signed *nfuncs"
46 .Fa "Dwarf_Error *err"
49 .Fo dwarf_func_cu_offset
51 .Fa "Dwarf_Off *cu_offset"
52 .Fa "Dwarf_Error *err"
55 .Fo dwarf_func_die_offset
57 .Fa "Dwarf_Off *die_offset"
58 .Fa "Dwarf_Error *err"
61 .Fo dwarf_func_name_offsets
64 .Fa "Dwarf_Off *die_offset"
65 .Fa "Dwarf_Off *cu_die_offset"
66 .Fa "Dwarf_Error *err"
72 .Fa "Dwarf_Error *err"
75 These functions retrieve information about static functions from the
76 lookup tables in the (SGI-specific)
77 .Dq ".debug_funcnames"
79 Information about these functions is returned using opaque descriptors
82 Applications need to use the functions described below to retrieve
83 the name and offset information contained in these descriptors.
87 retrieves descriptors for all the static functions associated with the
88 DWARF debug context specified by argument
92 should point to a location that will be set to a pointer to an array
98 should point to a location that will be set to the number of
102 .Fn dwarf_func_cu_offset
103 returns the offset, relative to the
105 section, of the compilation unit that contains the debugging
106 information entry associated with the argument
110 should point to a location that will hold the returned offset.
113 .Fn dwarf_func_die_offset
114 retrieves the offset, relative to the
116 section, of the debugging information entry associated with the
119 and stores it into the location pointed to by the argument
123 .Fn dwarf_func_name_offsets
124 retrieves the name and offsets for the debugging information entry for
129 should point to a location which will be set to a pointer to a
130 NUL-terminated string containing the name of the associated debugging
134 should point to a location which will be set to the offset, relative
137 section, of the associated debugging information entry.
140 should point to a location which will be set to the offset, relative
143 section, of the first debugging information entry in the compilation
144 unit associated with argument
149 sets the location pointed to by argument
151 to a pointer to a NUL-terminated string holding the name of the
152 debugging information entry associated with the argument
154 .Ss Memory Management
155 The memory area used for the array of
157 descriptors returned in argument
163 Application code should not attempt to directly free this pointer.
164 Portable code should instead use the function
165 .Xr dwarf_funcs_dealloc 3
166 to indicate that the memory area may be freed.
168 The memory area used for the string returned in the
170 argument to functions
171 .Fn dwarf_func_name_offsets
176 Portable code should indicate that the memory area can
183 is not NULL, these functions will use it to store error information,
186 On success, these functions returns
188 In case of an error, they return
193 These functions may fail with the following errors:
194 .Bl -tag -width ".Bq Er DW_DLE_ARGUMENT"
195 .It Bq Er DW_DLE_ARGUMENT
207 .It Bq Er DW_DLE_NO_ENTRY
208 The DWARF debugging context referenced by argument
210 did not contain information about static functions.
214 .Xr dwarf_funcs_dealloc 3 ,
215 .Xr dwarf_get_cu_die_offset_given_cu_header_offset 3