1.\" Copyright (c) 2011 Kai Wang 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $Id: dwarf_get_cu_die_offset.3 3640 2018-10-14 14:09:13Z jkoshy $ 26.\" 27.Dd April 10, 2011 28.Dt DWARF_GET_CU_DIE_OFFSET 3 29.Os 30.Sh NAME 31.Nm dwarf_get_arange_cu_header_offset , 32.Nm dwarf_get_cu_die_offset 33.Nd retrieve compilation unit offsets 34.Sh LIBRARY 35.Lb libdwarf 36.Sh SYNOPSIS 37.In libdwarf.h 38.Ft int 39.Fo dwarf_get_arange_cu_header_offset 40.Fa "Dwarf_Arange ar" 41.Fa "Dwarf_Off *ret" 42.Fa "Dwarf_Error *err" 43.Fc 44.Ft int 45.Fo dwarf_get_cu_die_offset 46.Fa "Dwarf_Arange ar" 47.Fa "Dwarf_Off *ret" 48.Fa "Dwarf_Error *err" 49.Fc 50.Sh DESCRIPTION 51These functions retrieve the offsets, relative to the 52.Dq ".debug_info" 53DWARF section, of the debugging information entries describing the 54compilation unit associated with a 55.Vt Dwarf_Arange 56descriptor. 57.Pp 58Function 59.Fn dwarf_get_arange_cu_header_offset 60retrieves the offset of the compilation unit header associated with 61argument 62.Ar ar , 63and stores it in the location pointed to by argument 64.Ar ret . 65.Pp 66Function 67.Fn dwarf_get_cu_die_offset 68retrieves the offset of the debugging information entry for the 69compilation unit associated with argument 70.Ar ar , 71and stores it in the location pointed to by argument 72.Ar ret . 73.Pp 74If argument 75.Ar err 76is not NULL, these functions will use it to store error information, 77in case of an error. 78.Sh RETURN VALUES 79On success, these functions returns 80.Dv DW_DLV_OK . 81In case of an error, they return 82.Dv DW_DLV_ERROR 83and set the argument 84.Ar err . 85.Sh ERRORS 86These functions may fail with: 87.Bl -tag -width ".Bq Er DW_DLE_ARGUMENT" 88.It Bq Er DW_DLE_ARGUMENT 89Argument 90.Ar ar 91was not a valid 92.Vt Dwarf_Arange 93descriptor. 94.It Bq Er DW_DLE_ARGUMENT 95Argument 96.Ar ret 97was NULL. 98.El 99.Sh SEE ALSO 100.Xr dwarf 3 , 101.Xr dwarf_get_arange 3 , 102.Xr dwarf_get_arange_info 3 , 103.Xr dwarf_get_aranges 3 104