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/*-
* Copyright (c) 2007 John Birrell (jb@freebsd.org)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "_libdwarf.h"
ELFTC_VCSID("$Id: dwarf_dealloc.c 2073 2011-10-27 03:30:47Z jkoshy $");
void
dwarf_dealloc(Dwarf_Debug dbg, Dwarf_Ptr p, Dwarf_Unsigned alloc_type)
{
Dwarf_Abbrev ab;
Dwarf_AttrDef ad, tad;
Dwarf_Attribute at, tat;
Dwarf_Die die;
/*
* This libdwarf implementation does not use the SGI/libdwarf
* style of memory allocation. In most cases it does not copy
* things to return to the client, so the client does not need
* to remember to free them. The remaining cases are handled
* below.
*/
(void) dbg;
if (alloc_type == DW_DLA_LIST || alloc_type == DW_DLA_FRAME_BLOCK ||
alloc_type == DW_DLA_LOC_BLOCK || alloc_type == DW_DLA_LOCDESC)
free(p);
else if (alloc_type == DW_DLA_ABBREV) {
ab = p;
STAILQ_FOREACH_SAFE(ad, &ab->ab_attrdef, ad_next, tad) {
STAILQ_REMOVE(&ab->ab_attrdef, ad, _Dwarf_AttrDef,
ad_next);
free(ad);
}
free(ab);
} else if (alloc_type == DW_DLA_DIE) {
die = p;
STAILQ_FOREACH_SAFE(at, &die->die_attr, at_next, tat) {
STAILQ_REMOVE(&die->die_attr, at,
_Dwarf_Attribute, at_next);
if (at->at_ld != NULL)
free(at->at_ld);
free(at);
}
if (die->die_attrarray)
free(die->die_attrarray);
free(die);
}
}
void
dwarf_srclines_dealloc(Dwarf_Debug dbg, Dwarf_Line *linebuf,
Dwarf_Signed count)
{
/*
* In this libdwarf implementation, line information remains
* associated with the DIE for a compilation unit for the
* lifetime of the DIE. The client does not need to free
* the memory returned by `dwarf_srclines()`.
*/
(void) dbg; (void) linebuf; (void) count;
}
void
dwarf_ranges_dealloc(Dwarf_Debug dbg, Dwarf_Ranges *ranges,
Dwarf_Signed range_count)
{
/*
* In this libdwarf implementation, ranges information is
* kept by a STAILQ inside Dwarf_Debug object. The client
* does not need to free the memory returned by
* `dwarf_get_ranges()` or `dwarf_get_ranges_a()`.
*/
(void) dbg; (void) ranges; (void) range_count;
}
void
dwarf_fde_cie_list_dealloc(Dwarf_Debug dbg, Dwarf_Cie *cie_list,
Dwarf_Signed cie_count, Dwarf_Fde *fde_list, Dwarf_Signed fde_count)
{
/*
* In this implementation, FDE and CIE information is managed
* as part of the Dwarf_Debug object. The client does not need
* to explicitly free these memory arenas.
*/
(void) dbg;
(void) cie_list;
(void) cie_count;
(void) fde_list;
(void) fde_count;
}
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