xref: /titanic_44/usr/src/cmd/sgs/liblddbg/common/elf.c (revision 9df12a23948bd40cbe37ce88d84e272c3894e675)
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 
33 void
34 Elf_ehdr(Lm_list *lml, Ehdr *ehdr, Shdr *shdr0)
35 {
36 	Byte		*byte =	&(ehdr->e_ident[0]);
37 	const char	*flgs;
38 
39 	dbg_print(lml, MSG_ORIG(MSG_STR_EMPTY));
40 	dbg_print(lml, MSG_INTL(MSG_ELF_HEADER));
41 
42 	dbg_print(lml, MSG_ORIG(MSG_ELF_MAGIC), byte[EI_MAG0],
43 	    (byte[EI_MAG1] ? byte[EI_MAG1] : '0'),
44 	    (byte[EI_MAG2] ? byte[EI_MAG2] : '0'),
45 	    (byte[EI_MAG3] ? byte[EI_MAG3] : '0'));
46 	dbg_print(lml, MSG_ORIG(MSG_ELF_CLASS),
47 	    conv_ehdr_class(ehdr->e_ident[EI_CLASS]),
48 	    conv_ehdr_data(ehdr->e_ident[EI_DATA]));
49 	dbg_print(lml, MSG_ORIG(MSG_ELF_MACHINE),
50 	    conv_ehdr_mach(ehdr->e_machine), conv_ehdr_vers(ehdr->e_version));
51 	dbg_print(lml, MSG_ORIG(MSG_ELF_TYPE), conv_ehdr_type(ehdr->e_type));
52 
53 	/*
54 	 * Line up the flags differently depending on wether we received a
55 	 * numeric (e.g. "0x200") or text representation (e.g.
56 	 * "[ EF_SPARC_SUN_US1 ]").
57 	 */
58 	flgs = conv_ehdr_flags(ehdr->e_machine, ehdr->e_flags);
59 	if (flgs[0] == '[')
60 		dbg_print(lml, MSG_ORIG(MSG_ELF_FLAGS_FMT), flgs);
61 	else
62 		dbg_print(lml, MSG_ORIG(MSG_ELF_FLAGS), flgs);
63 
64 	if ((ehdr->e_shnum == 0) && (ehdr->e_shstrndx == SHN_XINDEX))
65 		dbg_print(lml, MSG_ORIG(MSG_ELFX_ESIZE),
66 		    EC_ADDR(ehdr->e_entry), ehdr->e_ehsize);
67 	else
68 		dbg_print(lml, MSG_ORIG(MSG_ELF_ESIZE), EC_ADDR(ehdr->e_entry),
69 		    ehdr->e_ehsize, ehdr->e_shstrndx);
70 
71 	if ((ehdr->e_shnum == 0) && shdr0 && (shdr0->sh_size != 0))
72 		dbg_print(lml, MSG_ORIG(MSG_ELFX_SHOFF), EC_OFF(ehdr->e_shoff),
73 		    ehdr->e_shentsize);
74 	else
75 		dbg_print(lml, MSG_ORIG(MSG_ELF_SHOFF), EC_OFF(ehdr->e_shoff),
76 		    ehdr->e_shentsize, ehdr->e_shnum);
77 
78 	dbg_print(lml, MSG_ORIG(MSG_ELF_PHOFF), EC_OFF(ehdr->e_phoff),
79 	    ehdr->e_phentsize, ehdr->e_phnum);
80 
81 	if ((ehdr->e_shnum != 0) || (shdr0 == NULL) ||
82 	    (shdr0->sh_size == 0))
83 		return;
84 
85 	/*
86 	 * If we have Extended ELF headers - print shdr0
87 	 */
88 	dbg_print(lml, MSG_ORIG(MSG_SHD0_TITLE));
89 	dbg_print(lml, MSG_ORIG(MSG_SHD_ADDR), EC_ADDR(shdr0->sh_addr),
90 	    conv_sec_flags(shdr0->sh_flags));
91 	dbg_print(lml, MSG_ORIG(MSG_SHD0_SIZE), EC_XWORD(shdr0->sh_size),
92 	    conv_sec_type(ehdr->e_machine, shdr0->sh_type));
93 	dbg_print(lml, MSG_ORIG(MSG_SHD_OFFSET), EC_OFF(shdr0->sh_offset),
94 	    EC_XWORD(shdr0->sh_entsize));
95 
96 	if (ehdr->e_shstrndx == SHN_XINDEX)
97 		dbg_print(lml, MSG_ORIG(MSG_SHD0_LINK),
98 		    EC_WORD(shdr0->sh_link), conv_sec_info(shdr0->sh_info,
99 		    shdr0->sh_flags));
100 	else
101 		dbg_print(lml, MSG_ORIG(MSG_SHD_LINK), EC_WORD(shdr0->sh_link),
102 		    conv_sec_info(shdr0->sh_info, shdr0->sh_flags));
103 
104 	dbg_print(lml, MSG_ORIG(MSG_SHD_ALIGN), EC_XWORD(shdr0->sh_addralign));
105 }
106