2014-01-15 08:43:20 +00:00
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.\" Copyright (c) 2011 Kai Wang
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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2019-01-10 14:18:11 +00:00
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.\" $Id: dwarf_add_frame_cie.3 3640 2018-10-14 14:09:13Z jkoshy $
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2014-01-15 08:43:20 +00:00
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.\"
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.Dd September 26, 2011
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.Dt DWARF_ADD_FRAME_CIE 3
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2019-01-10 14:18:11 +00:00
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.Os
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2014-01-15 08:43:20 +00:00
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.Sh NAME
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.Nm dwarf_add_frame_cie
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.Nd add a call frame common information entry to a DWARF producer instance
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.Sh LIBRARY
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.Lb libdwarf
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.Sh SYNOPSIS
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.In libdwarf.h
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.Ft "Dwarf_Unsigned"
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.Fo dwarf_add_frame_cie
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.Fa "Dwarf_P_Debug dbg"
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.Fa "char *augmenter"
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.Fa "Dwarf_Small caf"
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.Fa "Dwarf_Small daf"
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.Fa "Dwarf_Small ra"
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.Fa "Dwarf_Ptr initinst"
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.Fa "Dwarf_Unsigned initlen"
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.Fa "Dwarf_Error *err"
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.Fc
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.Sh DESCRIPTION
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Function
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.Fn dwarf_add_frame_cie
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adds a DWARF call frame common information entry (CIE) to a producer
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instance.
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.Pp
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Argument
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.Ar dbg
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should reference a DWARF producer instance allocated using
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.Xr dwarf_producer_init 3
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or
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.Xr dwarf_producer_init_b 3 .
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.Pp
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Argument
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.Ar augmenter
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should point to a NUL-terminated augmentation string for the common
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information entry.
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.Pp
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Argument
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.Ar caf
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specifies the code alignment factor.
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.Pp
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Argument
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.Ar daf
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specifies the data alignment factor.
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.Pp
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Argument
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.Ar ra
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specifies the column number used for the return address register.
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.Pp
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Argument
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.Ar initinst
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should point to a byte stream containing the initial instructions
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for the common information entry.
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.Pp
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Argument
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.Ar initlen
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should hold the length in bytes of the byte stream pointed to by
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argument
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.Ar initinst .
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.Pp
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If argument
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.Ar err
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is not NULL, it will be used to store error information in case of an
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error.
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.Sh RETURN VALUES
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On success, function
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.Fn dwarf_add_frame_cie
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returns the index value of the created common information entry.
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In case of an error, function
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.Fn dwarf_add_frame_cie
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returns
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.Dv DW_DLV_NOCOUNT
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and sets the argument
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.Ar err .
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.Sh ERRORS
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Function
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.Fn dwarf_add_frame_cie
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can fail with:
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.Bl -tag -width ".Bq Er DW_DLE_ARGUMENT"
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.It Bq Er DW_DLE_ARGUMENT
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Argument
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.Ar dbg
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was NULL.
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.It Bq Er DW_DLE_MEMORY
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An out of memory condition was encountered during the execution of the
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function.
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.El
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.Sh SEE ALSO
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.Xr dwarf 3 ,
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.Xr dwarf_add_fde_inst 3 ,
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.Xr dwarf_add_frame_fde 3 ,
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.Xr dwarf_add_frame_fde_b 3 ,
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.Xr dwarf_fde_cfa_offset 3 ,
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.Xr dwarf_new_fde 3 ,
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.Xr dwarf_producer_init 3 ,
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.Xr dwarf_producer_init_b 3
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