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_expr_into_block.3 3640 2018-10-14 14:09:13Z jkoshy $ 262de3b87aSKai Wang.\" 272de3b87aSKai Wang.Dd September 13, 2011 282de3b87aSKai Wang.Dt DWARF_EXPR_INTO_BLOCK 3 29*ae500c1fSEd Maste.Os 302de3b87aSKai Wang.Sh NAME 312de3b87aSKai Wang.Nm dwarf_expr_into_block 322de3b87aSKai Wang.Nd retrieve the byte stream for a location expression 332de3b87aSKai Wang.Sh LIBRARY 342de3b87aSKai Wang.Lb libdwarf 352de3b87aSKai Wang.Sh SYNOPSIS 362de3b87aSKai Wang.In libdwarf.h 372de3b87aSKai Wang.Ft "Dwarf_Addr" 382de3b87aSKai Wang.Fo dwarf_expr_into_block 392de3b87aSKai Wang.Fa "Dwarf_P_Expr expr" 402de3b87aSKai Wang.Fa "Dwarf_Unsigned *length" 412de3b87aSKai Wang.Fa "Dwarf_Error *err" 422de3b87aSKai Wang.Fc 432de3b87aSKai Wang.Sh DESCRIPTION 442de3b87aSKai WangFunction 452de3b87aSKai Wang.Fn dwarf_expr_into_block 462de3b87aSKai Wangretrieves the byte stream representation of a location expression. 472de3b87aSKai Wang.Pp 482de3b87aSKai WangArgument 492de3b87aSKai Wang.Ar expr 502de3b87aSKai Wangshould reference a location expression descriptor allocated using 512de3b87aSKai Wang.Xr dwarf_new_expr 3 . 522de3b87aSKai Wang.Pp 532de3b87aSKai WangArgument 542de3b87aSKai Wang.Ar length 552de3b87aSKai Wangshould point to a location which will hold the size in bytes of 562de3b87aSKai Wangthe retrieved byte stream. 572de3b87aSKai Wang.Pp 582de3b87aSKai WangIf argument 592de3b87aSKai Wang.Ar err 602de3b87aSKai Wangis not NULL, it will be used to store error information in case 612de3b87aSKai Wangof an error. 622de3b87aSKai Wang.Sh RETURN VALUES 632de3b87aSKai WangOn success, function 642de3b87aSKai Wang.Fn dwarf_expr_into_block 652de3b87aSKai Wangreturns the address of the first byte of the generated byte stream. 662de3b87aSKai WangIn case of an error, function 672de3b87aSKai Wang.Fn dwarf_expr_into_block 682de3b87aSKai Wangreturns 692de3b87aSKai Wang.Dv DW_DLV_BADADDR 702de3b87aSKai Wangand sets the argument 712de3b87aSKai Wang.Ar err . 722de3b87aSKai Wang.Sh ERRORS 732de3b87aSKai WangFunction 742de3b87aSKai Wang.Fn dwarf_expr_into_block 752de3b87aSKai Wangcan fail with: 762de3b87aSKai Wang.Bl -tag -width ".Bq Er DW_DLE_ARGUMENT" 772de3b87aSKai Wang.It Bq Er DW_DLE_ARGUMENT 782de3b87aSKai WangOne of the arguments 792de3b87aSKai Wang.Ar expr 802de3b87aSKai Wangor 812de3b87aSKai Wang.Ar length 822de3b87aSKai Wangwas NULL. 832de3b87aSKai Wang.It Bq Er DW_DLE_MEMORY 842de3b87aSKai WangAn out of memory condition was encountered during the execution of 852de3b87aSKai Wangthe function. 862de3b87aSKai Wang.El 872de3b87aSKai Wang.Sh SEE ALSO 882de3b87aSKai Wang.Xr dwarf 3 , 892de3b87aSKai Wang.Xr dwarf_add_AT_location_expr 3 , 902de3b87aSKai Wang.Xr dwarf_add_expr_addr 3 , 912de3b87aSKai Wang.Xr dwarf_add_expr_addr_b 3 , 922de3b87aSKai Wang.Xr dwarf_add_expr_gen 3 , 932de3b87aSKai Wang.Xr dwarf_expr_current_offset 3 , 942de3b87aSKai Wang.Xr dwarf_new_expr 3 95