1 .\" $NetBSD: dwarf_get_arange_info.3,v 1.2 2014/03/09 16:58:04 christos Exp $
3 .\" Copyright (c) 2011 Kai Wang
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27 .\" Id: dwarf_get_arange_info.3 2134 2011-11-10 08:40:14Z jkoshy
31 .Dt DWARF_GET_ARANGE_INFO 3
33 .Nm dwarf_get_arange_info
34 .Nd extract address range information from a descriptor
40 .Fo dwarf_get_arange_info
42 .Fa "Dwarf_Addr *start"
43 .Fa "Dwarf_Unsigned *length"
44 .Fa "Dwarf_Off *cu_die_offset"
45 .Fa "Dwarf_Error *err"
49 .Fn dwarf_get_arange_info
50 extracts address range information from a
56 should reference a valid
58 descriptor returned by function
59 .Xr dwarf_get_aranges 3 .
63 should point to a location which will hold the start value of the
64 address range associated with the descriptor.
68 should point to a location which will hold the length in bytes of the
69 address range associated with the descriptor.
73 should point to a location which will be set to an offset, relative to
76 section, of the first debugging information entry in the compilation
77 unit associated with argument
82 is not NULL, it will be used to store error information in case of an
86 .Fn dwarf_get_arange_info
90 In case of an error, it returns
96 .Fn dwarf_get_arange_info
98 .Bl -tag -width ".Bq Er DW_DLE_ARGUMENT"
99 .It Bq Er DW_DLE_ARGUMENT
108 To loop through all the address lookup table entries, use:
109 .Bd -literal -offset indent
112 Dwarf_Arange *aranges;
115 Dwarf_Unsigned length;
118 if (dwarf_get_aranges(dbg, &aranges, &cnt, &de) != DW_DLV_OK)
119 errx(EXIT_FAILURE, "dwarf_get_aranges: %s",
121 for (i = 0; i < cnt; i++) {
122 if (dwarf_get_arange_info(aranges[i], &start, &length,
123 &die_off, &de) != DW_DLV_OK) {
124 warnx("dwarf_get_arange_info: %s",
128 /* Do something with the returned information. */
133 .Xr dwarf_get_arange 3 ,
134 .Xr dwarf_get_aranges 3 ,
135 .Xr dwarf_get_arange_cu_header_offset 3 ,
136 .Xr dwarf_get_cu_die_offset 3