12de3b87aSKai Wang.\" Copyright (c) 2011 Kai Wang 22de3b87aSKai Wang.\" All rights reserved. 32de3b87aSKai Wang.\" 42de3b87aSKai Wang.\" Redistribution and use in source and binary forms, with or without 52de3b87aSKai Wang.\" modification, are permitted provided that the following conditions 62de3b87aSKai Wang.\" are met: 72de3b87aSKai Wang.\" 1. Redistributions of source code must retain the above copyright 82de3b87aSKai Wang.\" notice, this list of conditions and the following disclaimer. 92de3b87aSKai Wang.\" 2. Redistributions in binary form must reproduce the above copyright 102de3b87aSKai Wang.\" notice, this list of conditions and the following disclaimer in the 112de3b87aSKai Wang.\" documentation and/or other materials provided with the distribution. 122de3b87aSKai Wang.\" 132de3b87aSKai Wang.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 142de3b87aSKai Wang.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 152de3b87aSKai Wang.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 162de3b87aSKai Wang.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 172de3b87aSKai Wang.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 182de3b87aSKai Wang.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 192de3b87aSKai Wang.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 202de3b87aSKai Wang.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 212de3b87aSKai Wang.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 222de3b87aSKai Wang.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 232de3b87aSKai Wang.\" SUCH DAMAGE. 242de3b87aSKai Wang.\" 25*ae500c1fSEd Maste.\" $Id: dwarf_get_form_class.3 3640 2018-10-14 14:09:13Z jkoshy $ 262de3b87aSKai Wang.\" 272de3b87aSKai Wang.Dd June 26, 2011 282de3b87aSKai Wang.Dt DWARF_GET_FORM_CLASS 3 29*ae500c1fSEd Maste.Os 302de3b87aSKai Wang.Sh NAME 312de3b87aSKai Wang.Nm dwarf_get_form_class 322de3b87aSKai Wang.Nd retrieve the form class of an attribute 332de3b87aSKai Wang.Sh LIBRARY 342de3b87aSKai Wang.Lb libdwarf 352de3b87aSKai Wang.Sh SYNOPSIS 362de3b87aSKai Wang.In libdwarf.h 372de3b87aSKai Wang.Ft enum Dwarf_Form_Class 382de3b87aSKai Wang.Fo dwarf_get_form_class 392de3b87aSKai Wang.Fa "Dwarf_Half dwversion" 402de3b87aSKai Wang.Fa "Dwarf_Half attr" 412de3b87aSKai Wang.Fa "Dwarf_Half offset_size" 422de3b87aSKai Wang.Fa "Dwarf_Half form" 432de3b87aSKai Wang.Fc 442de3b87aSKai Wang.Sh DESCRIPTION 452de3b87aSKai WangFunction 462de3b87aSKai Wang.Fn dwarf_get_form_class 472de3b87aSKai Wangreturns the class of the form of a DWARF attribute. 482de3b87aSKai Wang.Pp 492de3b87aSKai WangArgument 502de3b87aSKai Wang.Ar dwversion 512de3b87aSKai Wangshould specify the version number of DWARF specification 522de3b87aSKai Wangto use: 2 for DWARF2, 3 for DWARF3 and 4 for DWARF4. 532de3b87aSKai Wang.Pp 542de3b87aSKai WangArgument 552de3b87aSKai Wang.Ar attr 562de3b87aSKai Wangshould hold the attribute code of the attribute, i.e., one of the 572de3b87aSKai Wang.Li DW_AT_* 582de3b87aSKai Wangvalues defined in 592de3b87aSKai Wang.In libdwarf.h . 602de3b87aSKai Wang.Pp 612de3b87aSKai WangArgument 622de3b87aSKai Wang.Ar offset_size 632de3b87aSKai Wangshould hold the size of a DWARF offset for the relevant compilation 642de3b87aSKai Wangunit. 652de3b87aSKai Wang.Pp 662de3b87aSKai WangArgument 672de3b87aSKai Wang.Ar form 682de3b87aSKai Wangshould hold the form code of the attribute. 692de3b87aSKai Wang.Sh RETURN VALUES 702de3b87aSKai WangOn success, function 712de3b87aSKai Wang.Fn dwarf_get_form_class 722de3b87aSKai Wangreturns the form class code, which is one of the 732de3b87aSKai Wang.Dv DW_FORM_CLASS_* 742de3b87aSKai Wangcontants defined in header file 752de3b87aSKai Wang.In libdwarf.h . 762de3b87aSKai WangIf the function was not able to determine the form class of the 772de3b87aSKai Wangattribute, it returns the special form class code 782de3b87aSKai Wang.Dv DW_FORM_CLASS_UNKNOWN . 792de3b87aSKai Wang.Sh ERRORS 802de3b87aSKai WangFunction 812de3b87aSKai Wang.Fn dwarf_get_form_class 822de3b87aSKai Wangdoes not return an error. 832de3b87aSKai Wang.Sh SEE ALSO 842de3b87aSKai Wang.Xr dwarf 3 , 852de3b87aSKai Wang.Xr dwarf_attr 3 , 862de3b87aSKai Wang.Xr dwarf_whatattr 3 , 872de3b87aSKai Wang.Xr dwarf_whatform 3 88