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freebsd/lib/libdwarf/dwarf_abbrev.c
John Birrell 6433849359 Add a BSD licensed DWARF library for use by the DTrace clients.
The API for this library is deliberately different to the GPL'd
libdwarf to avoid licensing problems.
2008-05-22 02:14:23 +00:00

72 lines
2.2 KiB
C

/*-
* 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.
*
* $FreeBSD$
*/
#include <stdlib.h>
#include "_libdwarf.h"
int
dwarf_abbrev_add(Dwarf_CU cu, uint64_t entry, uint64_t tag, uint8_t children, Dwarf_Abbrev *ap, Dwarf_Error *error)
{
Dwarf_Abbrev a;
int ret = DWARF_E_NONE;
if ((a = malloc(sizeof(struct _Dwarf_Abbrev))) == NULL) {
DWARF_SET_ERROR(error, DWARF_E_MEMORY);
return DWARF_E_MEMORY;
}
/* Initialise the abbrev structure. */
a->a_entry = entry;
a->a_tag = tag;
a->a_children = children;
/* Initialise the list of attributes. */
STAILQ_INIT(&a->a_attrib);
/* Add the abbrev to the list in the compilation unit. */
STAILQ_INSERT_TAIL(&cu->cu_abbrev, a, a_next);
if (ap != NULL)
*ap = a;
return ret;
}
Dwarf_Abbrev
dwarf_abbrev_find(Dwarf_CU cu, uint64_t entry)
{
Dwarf_Abbrev a = NULL;
STAILQ_FOREACH(a, &cu->cu_abbrev, a_next) {
if (a->a_entry == entry)
break;
}
return a;
}