mirror of
https://github.com/freebsd/freebsd-src
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ae500c1ff8
Highlights: - Make sure that only TLS sections are sorted into TLS segment. - Fixed multiple errors in "Section to Segment mapping". - Man page updates - ar improvements - elfcopy: avoid filter_reloc uninitialized variable for rela - elfcopy: avoid stripping relocations from static binaries - readelf: avoid printing directory in front of absolute path - readelf: add NT_FREEBSD_FEATURE_CTL FreeBSD note type - test improvements NOTES: Some of these changes originated in FreeBSD and simply reduce diffs between contrib and vendor. ELF Tool Chain ar is not (currently) used in FreeBSD, and there are improvements in both FreeBSD and ELF Tool Chain ar that are not in the other. Sponsored by: The FreeBSD Foundation
141 lines
3.7 KiB
Groff
141 lines
3.7 KiB
Groff
.\" Copyright (c) 2009,2011 Joseph Koshy. 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 Joseph Koshy ``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 Joseph Koshy be liable
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.\" for any direct, indirect, incidental, special, exemplary, or consequential
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.\" damages (including, but not limited to, procurement of substitute goods
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.\" or services; loss of use, data, or profits; or business interruption)
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.\" however caused and on any theory of liability, whether in contract, strict
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.\" liability, or tort (including negligence or otherwise) arising in any way
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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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.\" $Id: dwarf_finish.3 3644 2018-10-15 19:55:01Z jkoshy $
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.\"
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.Dd November 9, 2011
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.Dt DWARF_FINISH 3
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.Os
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.Sh NAME
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.Nm dwarf_finish ,
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.Nm dwarf_object_finish
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.Nd free resources associated with a debug descriptor
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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 int
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.Fn dwarf_finish "Dwarf_Debug dbg" "Dwarf_Error *err"
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.Ft int
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.Fn dwarf_object_finish "Dwarf_Debug dbg" "Dwarf_Error *err"
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.Sh DESCRIPTION
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The
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.Fn dwarf_finish
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and
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.Fn dwarf_object_finish
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functions are used to release the resources associated with a debug
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descriptor allocated by a prior call to
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.Xr dwarf_init 3
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and
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.Xr dwarf_object_init 3
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respectively.
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.Pp
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Argument
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.Ar dbg
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denotes a valid
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.Vt Dwarf_Debug
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instance.
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Argument
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.Ar err
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will be used to record error information in case of an error.
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.Pp
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After a call to
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.Fn dwarf_finish
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or
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.Fn dwarf_object_finish ,
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the argument
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.Ar dbg
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will be invalid and should not be used further.
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.Pp
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For
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.Vt Dwarf_Debug
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descriptors opened using
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.Xr dwarf_init 3 ,
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the application would need to explicitly release the
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.Vt Elf
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instance associated with the descriptor by first retrieving
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the instance using
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.Xr dwarf_get_elf 3
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and closing it using
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.Xr elf_end 3 .
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.Sh RETURN VALUES
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These functions return
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.Dv DW_DLV_OK
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if successful.
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In case of an error, the functions return
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.Dv DW_DLV_ERROR
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and record additional information in argument
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.Ar err .
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.Sh EXAMPLES
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To deallocate a
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.Vt Dwarf_Debug
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instance allocated using
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.Xr dwarf_elf_init 3
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use:
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.Bd -literal -offset indent
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Dwarf_Debug dbg;
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Dwarf_Error de;
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if (dwarf_finish(dbg, &de) != DW_DLV_OK)
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errx(EXIT_FAILURE, "dwarf_finish: %s", dwarf_errmsg(de));
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.Ed
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.Pp
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To deallocate a
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.Vt Dwarf_Debug
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instance allocated using
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.Xr dwarf_object_init 3
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use:
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.Bd -literal -offset indent
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Dwarf_Debug dbg;
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Dwarf_Error de;
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if (dwarf_object_finish(dbg, &de) != DW_DLV_OK)
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errx(EXIT_FAILURE, "dwarf_object_finish: %s",
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dwarf_errmsg(de));
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.Ed
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.Pp
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To deallocate a
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.Vt Dwarf_Debug
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instance allocated using
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.Xr dwarf_init 3
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use:
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.Bd -literal -offset indent
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Dwarf_Debug dbg;
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Dward_Error de;
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Elf *e;
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if (dwarf_get_elf(dbg, &e, &de) != DW_DLV_OK)
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errx(EXIT_FAILURE, "dwarf_get_elf: %s", dwarf_errmsg(&de));
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if (dwarf_finish(dbg, &de) != DW_DLV_OK)
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errx(EXIT_FAILURE, "dwarf_finish: %s", dwarf_errmsg(de));
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(void) elf_end(e);
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.Ed
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.Sh SEE ALSO
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.Xr dwarf_elf_init 3 ,
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.Xr dwarf_get_elf 3 ,
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.Xr dwarf_init 3 ,
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.Xr dwarf_object_init 3 ,
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.Xr elf_end 3
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