elfh.c revision 55416 
1/*
2 * Copyright (c) 1998 Robert Nordier
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
19 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
20 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
21 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
23 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
24 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: head/usr.sbin/btxld/elfh.c 55416 2000-01-04 14:10:36Z marcel $
27 */
28
29#include <sys/types.h>
30
31#include <stddef.h>
32#include "elfh.h"
33
34#define SET_ME	0xeeeeeeee    /* filled in by btxld */
35
36/*
37 * ELF header template.
38 */
39const struct elfh elfhdr = {
40    {
41	{
42	    ELFMAG0, ELFMAG1, ELFMAG2, ELFMAG3,     /* e_ident */
43	    ELFCLASS32, ELFDATA2LSB, EV_CURRENT, 0,
44	    'F', 'r', 'e', 'e', 'B', 'S', 'D', 0
45	},
46	ET_EXEC,				    /* e_type */
47	EM_386, 				    /* e_machine */
48	EV_CURRENT,				    /* e_version */
49	SET_ME, 				    /* e_entry */
50	offsetof(struct elfh, p),		    /* e_phoff */
51	offsetof(struct elfh, sh),		    /* e_shoff */
52	0,					    /* e_flags */
53	sizeof(elfhdr.e),			    /* e_ehsize */
54	sizeof(elfhdr.p[0]),			    /* e_phentsize */
55	sizeof(elfhdr.p) / sizeof(elfhdr.p[0]),     /* e_phnum */
56	sizeof(elfhdr.sh[0]),			    /* e_shentsize */
57	sizeof(elfhdr.sh) / sizeof(elfhdr.sh[0]),   /* e_shnum */
58	1					    /* e_shstrndx */
59    },
60    {
61	{
62	    PT_LOAD,				    /* p_type */
63	    sizeof(elfhdr),			    /* p_offset */
64	    SET_ME,				    /* p_vaddr */
65	    SET_ME,				    /* p_paddr */
66	    SET_ME,				    /* p_filesz */
67	    SET_ME,				    /* p_memsz */
68	    PF_R | PF_X,			    /* p_flags */
69	    0x1000				    /* p_align */
70	},
71	{
72	    PT_LOAD,				    /* p_type */
73	    SET_ME,				    /* p_offset */
74	    SET_ME,				    /* p_vaddr */
75	    SET_ME,				    /* p_paddr */
76	    SET_ME,				    /* p_filesz */
77	    SET_ME,				    /* p_memsz */
78	    PF_R | PF_W,			    /* p_flags */
79	    0x1000				    /* p_align */
80	}
81    },
82    {
83	{
84	    0, SHT_NULL, 0, 0, 0, 0, SHN_UNDEF, 0, 0, 0
85	},
86	{
87	    1,					    /* sh_name */
88	    SHT_STRTAB, 			    /* sh_type */
89	    0,					    /* sh_flags */
90	    0,					    /* sh_addr */
91	    offsetof(struct elfh, shstrtab),	    /* sh_offset */
92	    sizeof(elfhdr.shstrtab),		    /* sh_size */
93	    SHN_UNDEF,				    /* sh_link */
94	    0,					    /* sh_info */
95	    1,					    /* sh_addralign */
96	    0					    /* sh_entsize */
97	},
98	{
99	    0xb,				    /* sh_name */
100	    SHT_PROGBITS,			    /* sh_type */
101	    SHF_EXECINSTR | SHF_ALLOC,		    /* sh_flags */
102	    SET_ME,				    /* sh_addr */
103	    SET_ME,				    /* sh_offset */
104	    SET_ME,				    /* sh_size */
105	    SHN_UNDEF,				    /* sh_link */
106	    0,					    /* sh_info */
107	    4,					    /* sh_addralign */
108	    0					    /* sh_entsize */
109	},
110	{
111	    0x11,				    /* sh_name */
112	    SHT_PROGBITS,			    /* sh_type */
113	    SHF_ALLOC | SHF_WRITE,		    /* sh_flags */
114	    SET_ME,				    /* sh_addr */
115	    SET_ME,				    /* sh_offset */
116	    SET_ME,				    /* sh_size */
117	    SHN_UNDEF,				    /* sh_link */
118	    0,					    /* sh_info */
119	    4,					    /* sh_addralign */
120	    0					    /* sh_entsize */
121	}
122    },
123    "\0.shstrtab\0.text\0.data" 		    /* shstrtab */
124};
125