elfhdr.c revision 50479 
1/*
2 * Copyright (c) 1999 Global Technology Associates, Inc.
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/kgzip/elfhdr.c 50479 1999-08-28 01:35:59Z peter $
27 */
28
29#include <stddef.h>
30#include "elfhdr.h"
31
32#define KGZ_FIX_NSIZE	0	/* Run-time fixup */
33
34/*
35 * Relocatable header template.
36 */
37const struct kgz_elfhdr elfhdr = {
38    /* ELF header */
39    {
40	{
41	    ELFMAG0, ELFMAG1, ELFMAG2, ELFMAG3, 	/* e_ident */
42	    ELFCLASS32, ELFDATA2LSB, EV_CURRENT, 0,
43	    'F', 'r', 'e', 'e', 'B', 'S', 'D', 0
44	},
45	ET_EXEC,					/* e_type */
46	EM_386, 					/* e_machine */
47	EV_CURRENT,					/* e_version */
48	0,						/* e_entry */
49	0,						/* e_phoff */
50	offsetof(struct kgz_elfhdr, sh),		/* e_shoff */
51	0,						/* e_flags */
52	sizeof(Elf32_Ehdr),				/* e_ehsize */
53	0,						/* e_phentsize */
54	0,						/* e_phnum */
55	sizeof(Elf32_Shdr),				/* e_shentsize */
56	KGZ_SHNUM,					/* e_shnum */
57	KGZ_SH_SHSTRTAB 				/* e_shstrndx */
58    },
59    /* Section header */
60    {
61	{
62	    0,						/* sh_name */
63	    SHT_NULL,					/* sh_type */
64	    0,						/* sh_flags */
65	    0,						/* sh_addr */
66	    0,						/* sh_offset */
67	    0,						/* sh_size */
68	    SHN_UNDEF,					/* sh_link */
69	    0,						/* sh_info */
70	    0,						/* sh_addralign */
71	    0						/* sh_entsize */
72	},
73	{
74	    offsetof(struct kgz_shstrtab, symtab),	/* sh_name */
75	    SHT_SYMTAB, 				/* sh_type */
76	    0,						/* sh_flags */
77	    0,						/* sh_addr */
78	    offsetof(struct kgz_elfhdr, st),		/* sh_offset */
79	    sizeof(Elf32_Sym) * KGZ_STNUM,		/* sh_size */
80	    KGZ_SH_STRTAB,				/* sh_link */
81	    1,						/* sh_info */
82	    4,						/* sh_addralign */
83	    sizeof(Elf32_Sym)				/* sh_entsize */
84	},
85	{
86	    offsetof(struct kgz_shstrtab, shstrtab),	/* sh_name */
87	    SHT_STRTAB, 				/* sh_type */
88	    0,						/* sh_flags */
89	    0,						/* sh_addr */
90	    offsetof(struct kgz_elfhdr, shstrtab),	/* sh_offset */
91	    sizeof(struct kgz_shstrtab),		/* sh_size */
92	    SHN_UNDEF,					/* sh_link */
93	    0,						/* sh_info */
94	    1,						/* sh_addralign */
95	    0						/* sh_entsize */
96	},
97	{
98	    offsetof(struct kgz_shstrtab, strtab),	/* sh_name */
99	    SHT_STRTAB, 				/* sh_type */
100	    0,						/* sh_flags */
101	    0,						/* sh_addr */
102	    offsetof(struct kgz_elfhdr, strtab),	/* sh_offset */
103	    sizeof(struct kgz_strtab),			/* sh_size */
104	    SHN_UNDEF,					/* sh_link */
105	    0,						/* sh_info */
106	    1,						/* sh_addralign */
107	    0						/* sh_entsize */
108	},
109	{
110	    offsetof(struct kgz_shstrtab, data),	/* sh_name */
111	    SHT_PROGBITS,				/* sh_type */
112	    SHF_ALLOC | SHF_WRITE,			/* sh_flags */
113	    0,						/* sh_addr */
114	    sizeof(struct kgz_elfhdr),			/* sh_offset */
115	    sizeof(struct kgz_hdr) + KGZ_FIX_NSIZE,	/* sh_size */
116	    SHN_UNDEF,					/* sh_link */
117	    0,						/* sh_info */
118	    4,						/* sh_addralign */
119	    0						/* sh_entsize */
120	}
121    },
122    /* Symbol table */
123    {
124	{
125	    0,						/* st_name */
126	    0,						/* st_value */
127	    0,						/* st_size */
128	    0,						/* st_info */
129	    0,						/* st_other */
130	    SHN_UNDEF					/* st_shndx */
131	},
132	{
133	    offsetof(struct kgz_strtab, kgz),		/* st_name */
134	    0,						/* st_value */
135	    sizeof(struct kgz_hdr),			/* st_size */
136	    ELF32_ST_INFO(STB_GLOBAL, STT_OBJECT),	/* st_info */
137	    0,						/* st_other */
138	    KGZ_SH_DATA 				/* st_shndx */
139	},
140	{
141	    offsetof(struct kgz_strtab, kgz_ndata),	/* st_name */
142	    sizeof(struct kgz_hdr),			/* st_value */
143	    KGZ_FIX_NSIZE,				/* st_size */
144	    ELF32_ST_INFO(STB_GLOBAL, STT_OBJECT),	/* st_info */
145	    0,						/* st_other */
146	    KGZ_SH_DATA 				/* st_shndx */
147	}
148    },
149    /* Section header string table */
150    {
151	KGZ_SHSTR_ZERO, 				/* zero */
152	KGZ_SHSTR_SYMTAB,				/* symtab */
153	KGZ_SHSTR_SHSTRTAB,				/* shstrtab */
154	KGZ_SHSTR_STRTAB,				/* strtab */
155	KGZ_SHSTR_DATA					/* data */
156    },
157    /* String table */
158    {
159	KGZ_STR_ZERO,					/* zero */
160	KGZ_STR_KGZ,					/* kgz */
161	KGZ_STR_KGZ_NDATA				/* kgz_ndata */
162    }
163};
164