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_add_frame_cie.3 3640 2018-10-14 14:09:13Z jkoshy $ 26.\" 27.Dd September 26, 2011 28.Dt DWARF_ADD_FRAME_CIE 3 29.Os 30.Sh NAME 31.Nm dwarf_add_frame_cie 32.Nd add a call frame common information entry to a DWARF producer instance 33.Sh LIBRARY 34.Lb libdwarf 35.Sh SYNOPSIS 36.In libdwarf.h 37.Ft "Dwarf_Unsigned" 38.Fo dwarf_add_frame_cie 39.Fa "Dwarf_P_Debug dbg" 40.Fa "char *augmenter" 41.Fa "Dwarf_Small caf" 42.Fa "Dwarf_Small daf" 43.Fa "Dwarf_Small ra" 44.Fa "Dwarf_Ptr initinst" 45.Fa "Dwarf_Unsigned initlen" 46.Fa "Dwarf_Error *err" 47.Fc 48.Sh DESCRIPTION 49Function 50.Fn dwarf_add_frame_cie 51adds a DWARF call frame common information entry (CIE) to a producer 52instance. 53.Pp 54Argument 55.Ar dbg 56should reference a DWARF producer instance allocated using 57.Xr dwarf_producer_init 3 58or 59.Xr dwarf_producer_init_b 3 . 60.Pp 61Argument 62.Ar augmenter 63should point to a NUL-terminated augmentation string for the common 64information entry. 65.Pp 66Argument 67.Ar caf 68specifies the code alignment factor. 69.Pp 70Argument 71.Ar daf 72specifies the data alignment factor. 73.Pp 74Argument 75.Ar ra 76specifies the column number used for the return address register. 77.Pp 78Argument 79.Ar initinst 80should point to a byte stream containing the initial instructions 81for the common information entry. 82.Pp 83Argument 84.Ar initlen 85should hold the length in bytes of the byte stream pointed to by 86argument 87.Ar initinst . 88.Pp 89If argument 90.Ar err 91is not NULL, it will be used to store error information in case of an 92error. 93.Sh RETURN VALUES 94On success, function 95.Fn dwarf_add_frame_cie 96returns the index value of the created common information entry. 97In case of an error, function 98.Fn dwarf_add_frame_cie 99returns 100.Dv DW_DLV_NOCOUNT 101and sets the argument 102.Ar err . 103.Sh ERRORS 104Function 105.Fn dwarf_add_frame_cie 106can fail with: 107.Bl -tag -width ".Bq Er DW_DLE_ARGUMENT" 108.It Bq Er DW_DLE_ARGUMENT 109Argument 110.Ar dbg 111was NULL. 112.It Bq Er DW_DLE_MEMORY 113An out of memory condition was encountered during the execution of the 114function. 115.El 116.Sh SEE ALSO 117.Xr dwarf 3 , 118.Xr dwarf_add_fde_inst 3 , 119.Xr dwarf_add_frame_fde 3 , 120.Xr dwarf_add_frame_fde_b 3 , 121.Xr dwarf_fde_cfa_offset 3 , 122.Xr dwarf_new_fde 3 , 123.Xr dwarf_producer_init 3 , 124.Xr dwarf_producer_init_b 3 125