diff options
Diffstat (limited to 'rtemstoolkit/elftoolchain/libdwarf/dwarf_dealloc.c')
| -rw-r--r-- | rtemstoolkit/elftoolchain/libdwarf/dwarf_dealloc.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/rtemstoolkit/elftoolchain/libdwarf/dwarf_dealloc.c b/rtemstoolkit/elftoolchain/libdwarf/dwarf_dealloc.c new file mode 100644 index 0000000..eb7ed1c --- /dev/null +++ b/rtemstoolkit/elftoolchain/libdwarf/dwarf_dealloc.c @@ -0,0 +1,117 @@ +/*- + * 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; +} |