elf.c revision 1976:f0691a145b7e 
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26#pragma ident	"%Z%%M%	%I%	%E% SMI"
27
28#include	<sgs.h>
29#include	<_debug.h>
30#include	<conv.h>
31#include	<msg.h>
32
33void
34Elf_ehdr(Lm_list *lml, Ehdr *ehdr, Shdr *shdr0)
35{
36	Byte		*byte =	&(ehdr->e_ident[0]);
37	const char	*flgs;
38	int		xshdr = 0;
39
40	dbg_print(lml, MSG_ORIG(MSG_STR_EMPTY));
41	dbg_print(lml, MSG_INTL(MSG_ELF_HEADER));
42
43	dbg_print(lml, MSG_ORIG(MSG_ELF_MAGIC), byte[EI_MAG0],
44	    (byte[EI_MAG1] ? byte[EI_MAG1] : '0'),
45	    (byte[EI_MAG2] ? byte[EI_MAG2] : '0'),
46	    (byte[EI_MAG3] ? byte[EI_MAG3] : '0'));
47	dbg_print(lml, MSG_ORIG(MSG_ELF_CLASS),
48	    conv_ehdr_class(ehdr->e_ident[EI_CLASS], 0),
49	    conv_ehdr_data(ehdr->e_ident[EI_DATA], 0));
50	dbg_print(lml, MSG_ORIG(MSG_ELF_MACHINE),
51	    conv_ehdr_mach(ehdr->e_machine, 0),
52	    conv_ehdr_vers(ehdr->e_version, 0));
53	dbg_print(lml, MSG_ORIG(MSG_ELF_TYPE),
54	    conv_ehdr_type(ehdr->e_type, 0));
55
56	/*
57	 * Line up the flags differently depending on whether we received a
58	 * numeric (e.g. "0x200") or text representation (e.g.
59	 * "[ EF_SPARC_SUN_US1 ]").
60	 */
61	flgs = conv_ehdr_flags(ehdr->e_machine, ehdr->e_flags);
62	if (flgs[0] == '[')
63		dbg_print(lml, MSG_ORIG(MSG_ELF_FLAGS_FMT), flgs);
64	else
65		dbg_print(lml, MSG_ORIG(MSG_ELF_FLAGS), flgs);
66
67	/*
68	 * The e_shnum, e_shstrndx and e_phnum entries may have a different
69	 * meaning if extended sections exist.
70	 */
71	if ((ehdr->e_shnum == 0) && (ehdr->e_shstrndx == SHN_XINDEX)) {
72		dbg_print(lml, MSG_ORIG(MSG_ELFX_ESIZE),
73		    EC_ADDR(ehdr->e_entry), ehdr->e_ehsize);
74		xshdr++;
75	} else
76		dbg_print(lml, MSG_ORIG(MSG_ELF_ESIZE), EC_ADDR(ehdr->e_entry),
77		    ehdr->e_ehsize, ehdr->e_shstrndx);
78
79	if ((ehdr->e_shnum == 0) && (shdr0 != NULL) && (shdr0->sh_size != 0)) {
80		dbg_print(lml, MSG_ORIG(MSG_ELFX_SHOFF), EC_OFF(ehdr->e_shoff),
81		    ehdr->e_shentsize);
82		xshdr++;
83	} else
84		dbg_print(lml, MSG_ORIG(MSG_ELF_SHOFF), EC_OFF(ehdr->e_shoff),
85		    ehdr->e_shentsize, ehdr->e_shnum);
86
87	if (ehdr->e_phoff == PN_XNUM) {
88		dbg_print(lml, MSG_ORIG(MSG_ELFX_PHOFF), EC_OFF(ehdr->e_phoff),
89		    ehdr->e_phentsize);
90		xshdr++;
91	} else
92		dbg_print(lml, MSG_ORIG(MSG_ELF_PHOFF), EC_OFF(ehdr->e_phoff),
93		    ehdr->e_phentsize, ehdr->e_phnum);
94
95	if ((xshdr == 0) || (shdr0 == NULL))
96		return;
97
98	/*
99	 * If we have Extended ELF headers - print shdr[0].
100	 */
101	dbg_print(lml, MSG_ORIG(MSG_STR_EMPTY));
102	dbg_print(lml, MSG_ORIG(MSG_SHD0_TITLE));
103	dbg_print(lml, MSG_ORIG(MSG_SHD0_ADDR), EC_ADDR(shdr0->sh_addr),
104	    conv_sec_flags(shdr0->sh_flags));
105	dbg_print(lml, MSG_ORIG(MSG_SHD0_SIZE), EC_XWORD(shdr0->sh_size),
106	    conv_sec_type(ehdr->e_machine, shdr0->sh_type, 0));
107	dbg_print(lml, MSG_ORIG(MSG_SHD0_OFFSET), EC_OFF(shdr0->sh_offset),
108	    EC_XWORD(shdr0->sh_entsize));
109	dbg_print(lml, MSG_ORIG(MSG_SHD0_LINK), EC_WORD(shdr0->sh_link),
110	    EC_WORD(shdr0->sh_info));
111	dbg_print(lml, MSG_ORIG(MSG_SHD0_ALIGN), EC_XWORD(shdr0->sh_addralign));
112}
113