1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate #include <sys/types.h>
30*0Sstevel@tonic-gate #include <string.h>
31*0Sstevel@tonic-gate
32*0Sstevel@tonic-gate #include "symbol.h"
33*0Sstevel@tonic-gate
34*0Sstevel@tonic-gate int
ignore_symbol(GElf_Sym * sym,const char * name)35*0Sstevel@tonic-gate ignore_symbol(GElf_Sym *sym, const char *name)
36*0Sstevel@tonic-gate {
37*0Sstevel@tonic-gate uchar_t type = GELF_ST_TYPE(sym->st_info);
38*0Sstevel@tonic-gate
39*0Sstevel@tonic-gate /*
40*0Sstevel@tonic-gate * As an optimization, we do not output function or data object
41*0Sstevel@tonic-gate * records for undefined or anonymous symbols.
42*0Sstevel@tonic-gate */
43*0Sstevel@tonic-gate if (sym->st_shndx == SHN_UNDEF || sym->st_name == 0)
44*0Sstevel@tonic-gate return (1);
45*0Sstevel@tonic-gate
46*0Sstevel@tonic-gate /*
47*0Sstevel@tonic-gate * _START_ and _END_ are added to the symbol table by the
48*0Sstevel@tonic-gate * linker, and will never have associated type information.
49*0Sstevel@tonic-gate */
50*0Sstevel@tonic-gate if (strcmp(name, "_START_") == 0 || strcmp(name, "_END_") == 0)
51*0Sstevel@tonic-gate return (1);
52*0Sstevel@tonic-gate
53*0Sstevel@tonic-gate /*
54*0Sstevel@tonic-gate * Do not output records for absolute-valued object symbols
55*0Sstevel@tonic-gate * that have value zero. The compiler insists on generating
56*0Sstevel@tonic-gate * things like this for __fsr_init_value settings, etc.
57*0Sstevel@tonic-gate */
58*0Sstevel@tonic-gate if (type == STT_OBJECT && sym->st_shndx == SHN_ABS &&
59*0Sstevel@tonic-gate sym->st_value == 0)
60*0Sstevel@tonic-gate return (1);
61*0Sstevel@tonic-gate return (0);
62*0Sstevel@tonic-gate }
63