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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
165 lines
4.3 KiB
Groff
165 lines
4.3 KiB
Groff
.\" 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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.\" 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_new_die.3 3644 2018-10-15 19:55:01Z jkoshy $
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.\"
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.Dd September 4, 2011
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.Dt DWARF_NEW_DIE 3
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.Os
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.Sh NAME
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.Nm dwarf_new_die
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.Nd allocate a new debugging information entry
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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_P_Die
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.Fo dwarf_new_die
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.Fa "Dwarf_P_Debug dbg"
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.Fa "Dwarf_Tag tag"
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.Fa "Dwarf_P_Die parent"
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.Fa "Dwarf_P_Die child"
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.Fa "Dwarf_P_Die left"
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.Fa "Dwarf_P_Die right"
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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_new_die
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allocates a new DWARF debugging information entry and links it
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to another debugging information entry.
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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 tag
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should specify the tag of the newly created debugging information entry.
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Valid values for this argument are those for the
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.Dv DW_TAG_ Ns *
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symbols defined in
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.In libdwarf.h .
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.Pp
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Argument
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.Ar parent
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specifies the parent link of the debugging information entry.
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.Pp
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Argument
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.Ar child
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specifies the first child link of the debugging information entry.
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.Pp
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Argument
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.Ar left
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specifies the left sibling link of the debugging information entry.
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.Pp
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Argument
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.Ar right
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specifies the right sibling link of the debugging information entry.
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.Pp
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Only one of arguments
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.Ar parent ,
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.Ar child ,
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.Ar left
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and
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.Ar right
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is allowed to be non-NULL.
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Application code can subsequently call the function
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.Xr dwarf_die_link 3
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to change the links for the created debugging information entry.
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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
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of an error.
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.Sh RETURN VALUES
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On success, function
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.Fn dwarf_new_die
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returns the newly created debugging information entry.
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In case of an error, function
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.Fn dwarf_new_die
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returns
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.Dv DW_DLV_BADADDR
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and sets the argument
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.Ar err .
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.Sh EXAMPLES
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To create debugging information entries and add them to the producer
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instance, use:
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.Bd -literal -offset indent
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Dwarf_P_Debug dbg;
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Dwarf_P_Die die1, die2;
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Dwarf_Error de;
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/* ... assume dbg refers to a DWARF producer instance ... */
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die1 = dwarf_new_die(dbg, DW_TAG_compilation_unit, NULL, NULL, NULL,
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NULL, &de);
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if (die1 == NULL) {
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warnx("dwarf_new_die failed: %s", dwarf_errmsg(-1));
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return;
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}
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die2 = dwarf_new_die(dbg, DW_TAG_base_type, die1, NULL, NULL,
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NULL, &de);
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if (die1 == NULL) {
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warnx("dwarf_new_die failed: %s", dwarf_errmsg(-1));
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return;
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}
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if (dwarf_add_die_to_debug(dbg, die1, &de) != DW_DLV_OK) {
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warnx("dwarf_add_die_to_debug failed: %s", dwarf_errmsg(-1));
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return;
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}
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.Ed
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.Sh ERRORS
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Function
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.Fn dwarf_new_die
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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_ARGUMENT
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More than one of the arguments
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.Ar parent ,
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.Ar child ,
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.Ar left
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and
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.Ar right
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were non-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_die_to_debug 3 ,
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.Xr dwarf_die_link 3 ,
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.Xr dwarf_producer_init 3 ,
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.Xr dwarf_producer_init_b 3
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