1 .\" Copyright (c) 2011 Kai Wang
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25 .\" $Id: dwarf_get_arange_info.3 3644 2018-10-15 19:55:01Z jkoshy $
28 .Dt DWARF_GET_ARANGE_INFO 3
31 .Nm dwarf_get_arange_info
32 .Nd extract address range information from a descriptor
38 .Fo dwarf_get_arange_info
40 .Fa "Dwarf_Addr *start"
41 .Fa "Dwarf_Unsigned *length"
42 .Fa "Dwarf_Off *cu_die_offset"
43 .Fa "Dwarf_Error *err"
47 .Fn dwarf_get_arange_info
48 extracts address range information from a
54 should reference a valid
56 descriptor returned by function
57 .Xr dwarf_get_aranges 3 .
61 should point to a location which will hold the start value of the
62 address range associated with the descriptor.
66 should point to a location which will hold the length in bytes of the
67 address range associated with the descriptor.
71 should point to a location which will be set to an offset, relative to
74 section, of the first debugging information entry in the compilation
75 unit associated with argument
80 is not NULL, it will be used to store error information in case of an
84 .Fn dwarf_get_arange_info
88 In case of an error, it returns
93 To loop through all the address lookup table entries, use:
94 .Bd -literal -offset indent
97 Dwarf_Arange *aranges;
100 Dwarf_Unsigned length;
103 if (dwarf_get_aranges(dbg, &aranges, &cnt, &de) != DW_DLV_OK)
104 errx(EXIT_FAILURE, "dwarf_get_aranges: %s",
106 for (i = 0; i < cnt; i++) {
107 if (dwarf_get_arange_info(aranges[i], &start, &length,
108 &die_off, &de) != DW_DLV_OK) {
109 warnx("dwarf_get_arange_info: %s",
113 /* Do something with the returned information. */
118 .Fn dwarf_get_arange_info
120 .Bl -tag -width ".Bq Er DW_DLE_ARGUMENT"
121 .It Bq Er DW_DLE_ARGUMENT
132 .Xr dwarf_get_arange 3 ,
133 .Xr dwarf_get_arange_cu_header_offset 3 ,
134 .Xr dwarf_get_aranges 3 ,
135 .Xr dwarf_get_cu_die_offset 3