elf.c revision 9273:9a0603d78ad3 
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 2009 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#include	<sgs.h>
28#include	<_debug.h>
29#include	<conv.h>
30#include	<msg.h>
31
32void
33Elf_ehdr(Lm_list *lml, Ehdr *ehdr, Shdr *shdr0)
34{
35	Conv_inv_buf_t		inv_buf1, inv_buf2;
36	Conv_ehdr_flags_buf_t	flags_buf;
37	Conv_sec_flags_buf_t	sec_flags_buf;
38	Byte			*byte =	&(ehdr->e_ident[0]);
39	const char		*flgs;
40	int			xshdr = 0;
41	uchar_t			osabi = ehdr->e_ident[EI_OSABI];
42	Half			mach = ehdr->e_machine;
43
44	dbg_print(lml, MSG_ORIG(MSG_STR_EMPTY));
45	dbg_print(lml, MSG_INTL(MSG_ELF_HEADER));
46
47	dbg_print(lml, MSG_ORIG(MSG_ELF_MAGIC), byte[EI_MAG0],
48	    (byte[EI_MAG1] ? byte[EI_MAG1] : '0'),
49	    (byte[EI_MAG2] ? byte[EI_MAG2] : '0'),
50	    (byte[EI_MAG3] ? byte[EI_MAG3] : '0'));
51	dbg_print(lml, MSG_ORIG(MSG_ELF_CLASS),
52	    conv_ehdr_class(ehdr->e_ident[EI_CLASS], 0, &inv_buf1),
53	    conv_ehdr_data(ehdr->e_ident[EI_DATA], 0, &inv_buf2));
54	dbg_print(lml, MSG_ORIG(MSG_ELF_OSABI),
55	    conv_ehdr_osabi(ehdr->e_ident[EI_OSABI], 0, &inv_buf1),
56	    conv_ehdr_abivers(ehdr->e_ident[EI_OSABI],
57	    ehdr->e_ident[EI_ABIVERSION], CONV_FMT_DECIMAL, &inv_buf2));
58	dbg_print(lml, MSG_ORIG(MSG_ELF_MACHINE),
59	    conv_ehdr_mach(mach, 0, &inv_buf1),
60	    conv_ehdr_vers(ehdr->e_version, 0, &inv_buf2));
61	dbg_print(lml, MSG_ORIG(MSG_ELF_TYPE),
62	    conv_ehdr_type(osabi, ehdr->e_type, 0, &inv_buf1));
63
64	/*
65	 * Line up the flags differently depending on whether we received a
66	 * numeric (e.g. "0x200") or text representation (e.g.
67	 * "[ EF_SPARC_SUN_US1 ]").
68	 */
69	flgs = conv_ehdr_flags(mach, ehdr->e_flags, 0, &flags_buf);
70	if (flgs[0] == '[')
71		dbg_print(lml, MSG_ORIG(MSG_ELF_FLAGS_FMT), flgs);
72	else
73		dbg_print(lml, MSG_ORIG(MSG_ELF_FLAGS), flgs);
74
75	/*
76	 * The e_shnum, e_shstrndx and e_phnum entries may have a different
77	 * meaning if extended sections exist.
78	 */
79	if (ehdr->e_shstrndx == SHN_XINDEX) {
80		dbg_print(lml, MSG_ORIG(MSG_ELFX_ESIZE),
81		    EC_ADDR(ehdr->e_entry), ehdr->e_ehsize);
82		xshdr++;
83	} else
84		dbg_print(lml, MSG_ORIG(MSG_ELF_ESIZE), EC_ADDR(ehdr->e_entry),
85		    ehdr->e_ehsize, ehdr->e_shstrndx);
86
87	if (ehdr->e_shnum == 0) {
88		dbg_print(lml, MSG_ORIG(MSG_ELFX_SHOFF), EC_OFF(ehdr->e_shoff),
89		    ehdr->e_shentsize);
90		xshdr++;
91	} else
92		dbg_print(lml, MSG_ORIG(MSG_ELF_SHOFF), EC_OFF(ehdr->e_shoff),
93		    ehdr->e_shentsize, ehdr->e_shnum);
94
95	if (ehdr->e_phnum == PN_XNUM) {
96		dbg_print(lml, MSG_ORIG(MSG_ELFX_PHOFF), EC_OFF(ehdr->e_phoff),
97		    ehdr->e_phentsize);
98		xshdr++;
99	} else
100		dbg_print(lml, MSG_ORIG(MSG_ELF_PHOFF), EC_OFF(ehdr->e_phoff),
101		    ehdr->e_phentsize, ehdr->e_phnum);
102
103	if ((xshdr == 0) || (shdr0 == NULL))
104		return;
105
106	/*
107	 * If we have Extended ELF headers - print shdr[0].
108	 */
109	dbg_print(lml, MSG_ORIG(MSG_STR_EMPTY));
110	dbg_print(lml, MSG_ORIG(MSG_SHD0_TITLE));
111	dbg_print(lml, MSG_ORIG(MSG_SHD0_ADDR), EC_ADDR(shdr0->sh_addr),
112	    conv_sec_flags(osabi, mach, shdr0->sh_flags, 0, &sec_flags_buf));
113	dbg_print(lml, MSG_ORIG(MSG_SHD0_SIZE), EC_XWORD(shdr0->sh_size),
114	    conv_sec_type(osabi, mach, shdr0->sh_type, 0, &inv_buf1));
115	dbg_print(lml, MSG_ORIG(MSG_SHD0_OFFSET), EC_OFF(shdr0->sh_offset),
116	    EC_XWORD(shdr0->sh_entsize));
117	dbg_print(lml, MSG_ORIG(MSG_SHD0_LINK), EC_WORD(shdr0->sh_link),
118	    EC_WORD(shdr0->sh_info));
119	dbg_print(lml, MSG_ORIG(MSG_SHD0_ALIGN), EC_XWORD(shdr0->sh_addralign));
120}
121