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118 lines
3.7 KiB
C
118 lines
3.7 KiB
C
/*-
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* Copyright (c) 2007 John Birrell (jb@freebsd.org)
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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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#include "_libdwarf.h"
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ELFTC_VCSID("$Id: dwarf_dealloc.c 2073 2011-10-27 03:30:47Z jkoshy $");
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void
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dwarf_dealloc(Dwarf_Debug dbg, Dwarf_Ptr p, Dwarf_Unsigned alloc_type)
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{
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Dwarf_Abbrev ab;
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Dwarf_AttrDef ad, tad;
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Dwarf_Attribute at, tat;
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Dwarf_Die die;
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/*
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* This libdwarf implementation does not use the SGI/libdwarf
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* style of memory allocation. In most cases it does not copy
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* things to return to the client, so the client does not need
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* to remember to free them. The remaining cases are handled
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* below.
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*/
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(void) dbg;
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if (alloc_type == DW_DLA_LIST || alloc_type == DW_DLA_FRAME_BLOCK ||
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alloc_type == DW_DLA_LOC_BLOCK || alloc_type == DW_DLA_LOCDESC)
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free(p);
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else if (alloc_type == DW_DLA_ABBREV) {
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ab = p;
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STAILQ_FOREACH_SAFE(ad, &ab->ab_attrdef, ad_next, tad) {
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STAILQ_REMOVE(&ab->ab_attrdef, ad, _Dwarf_AttrDef,
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ad_next);
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free(ad);
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}
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free(ab);
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} else if (alloc_type == DW_DLA_DIE) {
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die = p;
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STAILQ_FOREACH_SAFE(at, &die->die_attr, at_next, tat) {
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STAILQ_REMOVE(&die->die_attr, at,
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_Dwarf_Attribute, at_next);
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if (at->at_ld != NULL)
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free(at->at_ld);
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free(at);
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}
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if (die->die_attrarray)
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free(die->die_attrarray);
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free(die);
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}
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}
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void
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dwarf_srclines_dealloc(Dwarf_Debug dbg, Dwarf_Line *linebuf,
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Dwarf_Signed count)
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{
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/*
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* In this libdwarf implementation, line information remains
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* associated with the DIE for a compilation unit for the
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* lifetime of the DIE. The client does not need to free
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* the memory returned by `dwarf_srclines()`.
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*/
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(void) dbg; (void) linebuf; (void) count;
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}
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void
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dwarf_ranges_dealloc(Dwarf_Debug dbg, Dwarf_Ranges *ranges,
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Dwarf_Signed range_count)
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{
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/*
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* In this libdwarf implementation, ranges information is
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* kept by a STAILQ inside Dwarf_Debug object. The client
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* does not need to free the memory returned by
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* `dwarf_get_ranges()` or `dwarf_get_ranges_a()`.
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*/
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(void) dbg; (void) ranges; (void) range_count;
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}
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void
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dwarf_fde_cie_list_dealloc(Dwarf_Debug dbg, Dwarf_Cie *cie_list,
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Dwarf_Signed cie_count, Dwarf_Fde *fde_list, Dwarf_Signed fde_count)
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{
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/*
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* In this implementation, FDE and CIE information is managed
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* as part of the Dwarf_Debug object. The client does not need
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* to explicitly free these memory arenas.
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*/
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(void) dbg;
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(void) cie_list;
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(void) cie_count;
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(void) fde_list;
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(void) fde_count;
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}
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