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27 .\" Id: dwarf_add_arange.3 2072 2011-10-27 03:26:49Z jkoshy
29 .Dd September 18, 2011
31 .Dt DWARF_ADD_ARANGE 3
33 .Nm dwarf_add_arange ,
34 .Nm dwarf_add_arange_b
35 .Nd add address range information to a DWARF producer instance
42 .Fa "Dwarf_P_Debug dbg"
43 .Fa "Dwarf_Addr start"
44 .Fa "Dwarf_Unsigned length"
45 .Fa "Dwarf_Signed symbol_index"
46 .Fa "Dwarf_Error *err"
49 .Fo dwarf_add_arange_b
50 .Fa "Dwarf_P_Debug dbg"
51 .Fa "Dwarf_Addr start"
52 .Fa "Dwarf_Unsigned length"
53 .Fa "Dwarf_Unsigned symbol_index"
54 .Fa "Dwarf_Unsigned end_symbol_index"
55 .Fa "Dwarf_Addr offset_from_end_symbol"
56 .Fa "Dwarf_Error *err"
60 .Fn dwarf_add_arange_b
61 adds an address range entry to a producer instance.
65 should reference a DWARF producer instance allocated using
66 .Xr dwarf_producer_init 3
68 .Xr dwarf_producer_init_b 3 .
72 specifies the relocatable start address of the address range.
76 specifies the length of the address range.
80 specifies the ELF symbol index of the first symbol to be used for
85 specifies the ELF symbol index of the second symbol to be used for
92 .Dv DW_DLC_SYMBOLIC_RELOCATIONS
93 flag should have been set on the DWARF producer instance.
94 The address value specified by argument
96 will be treated as an offset value from the first symbol,
98 .Ar offset_from_end_symbol
99 should hold an offset value from the second symbol.
100 Application code can retrieve the relocation entries for the
101 symbol pair by calling function
102 .Xr dwarf_get_relocation_info 3 .
103 The relocation entry for the first symbol will have type
104 .Dv dwarf_drt_first_of_length_pair
105 and the relocation entry for the second symbol will have type
106 .Dv dwarf_drt_second_of_length_pair .
111 .Ar offset_from_end_symbol
112 will be ignored and only one symbol is used for relocation.
117 is not NULL, it will be used to store error information in case
123 It is similar to function
124 .Fn dwarf_add_arange_b
125 except that it cannot handle all possible symbol index values
126 and supports only one relocation symbol.
128 On success, these functions return a non-zero value.
129 In case of an error, these functions return 0 and set
133 These functions can fail with:
134 .Bl -tag -width ".Bq Er DW_DLE_ARGUMENT"
135 .It Bq Er DW_DLE_ARGUMENT
139 .It Bq Er DW_DLE_ARGUMENT
142 was non-zero, but the flag
143 .Dv DW_DLC_SYMBOLIC_RELOCATIONS
144 was not set on the producer instance.
145 .It Bq Er DW_DLE_MEMORY
146 An out of memory condition was encountered during the execution of the
151 .Xr dwarf_get_relocation_info 3 ,
152 .Xr dwarf_producer_init 3 ,
153 .Xr dwarf_producer_init_b 3