1.\" $NetBSD: dwarf_add_AT_flag.3,v 1.5 2022/03/14 20:50:48 jkoshy Exp $ 2.\" 3.\" Copyright (c) 2011 Kai Wang 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\" SUCH DAMAGE. 26.\" 27.\" Id: dwarf_add_AT_flag.3 3961 2022-03-12 15:13:22Z jkoshy 28.\" 29.Dd September 4, 2011 30.Dt DWARF_ADD_AT_FLAG 3 31.Os 32.Sh NAME 33.Nm dwarf_add_AT_flag 34.Nd create and attach a flag attribute 35.Sh LIBRARY 36.Lb libdwarf 37.Sh SYNOPSIS 38.In libdwarf.h 39.Ft Dwarf_P_Attribute 40.Fo dwarf_add_AT_flag 41.Fa "Dwarf_P_Debug dbg" 42.Fa "Dwarf_P_Die die" 43.Fa "Dwarf_Half attr" 44.Fa "Dwarf_Small flag" 45.Fa "Dwarf_Error *err" 46.Fc 47.Sh DESCRIPTION 48Function 49.Fn dwarf_add_AT_flag 50creates an attribute descriptor belonging to the 51.Sq flag 52class, and attaches it to the debugging information entry referenced 53by argument 54.Fa die . 55The created attribute descriptor will have DWARF form 56.Dv DW_FORM_flag . 57.Pp 58Argument 59.Fa dbg 60should reference a DWARF producer instance allocated using 61.Xr dwarf_producer_init 3 62or 63.Xr dwarf_producer_init_b 3 . 64.Pp 65Argument 66.Fa die 67should reference a debugging information entry allocated using 68.Xr dwarf_new_die 3 . 69.Pp 70Argument 71.Fa attr 72should specify the attribute code for the new attribute descriptor. 73.Pp 74Argument 75.Fa flag 76should specify the value of the new attribute descriptor. 77A zero value is treated as 78.Sq false 79and a non-zero value as 80.Sq true . 81.Pp 82If argument 83.Fa err 84is not 85.Dv NULL , 86it will be used to store error information in case of an error. 87.Sh RETURN VALUES 88On success, function 89.Fn dwarf_add_AT_flag 90returns the created attribute descriptor. 91In case of an error, function 92.Fn dwarf_add_AT_flag 93returns 94.Dv DW_DLV_BADADDR 95and sets the argument 96.Fa err . 97.Sh ERRORS 98Function 99.Fn dwarf_add_AT_flag 100can fail with: 101.Bl -tag -width ".Bq Er DW_DLE_ARGUMENT" 102.It Bq Er DW_DLE_ARGUMENT 103Either of the arguments 104.Fa dbg 105or 106.Fa die 107was 108.Dv NULL . 109.It Bq Er DW_DLE_MEMORY 110An out of memory condition was encountered during the execution of the 111function. 112.El 113.Sh SEE ALSO 114.Xr dwarf 3 , 115.Xr dwarf_add_AT_signed_const 3 , 116.Xr dwarf_add_AT_unsigned_const 3 , 117.Xr dwarf_new_die 3 , 118.Xr dwarf_producer_init 3 , 119.Xr dwarf_producer_init_b 3 120