1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1996-1997 John D. Polstra.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31#ifndef _MACHINE_ELF_H_
32#define	_MACHINE_ELF_H_ 1
33
34#if defined(__i386__) || defined(_MACHINE_ELF_WANT_32BIT)
35
36/*
37 * ELF definitions for the i386 architecture.
38 */
39
40#include <sys/elf32.h>	/* Definitions common to all 32 bit architectures. */
41#if defined(__ELF_WORD_SIZE) && __ELF_WORD_SIZE == 64
42#include <sys/elf64.h>	/* Definitions common to all 64 bit architectures. */
43#endif
44
45#ifndef __ELF_WORD_SIZE
46#define	__ELF_WORD_SIZE	32	/* Used by <sys/elf_generic.h> */
47#endif
48
49#include <sys/elf_generic.h>
50
51#define	ELF_ARCH	EM_386
52
53#define	ELF_MACHINE_OK(x) ((x) == EM_386 || (x) == EM_486)
54
55/*
56 * Auxiliary vector entries for passing information to the interpreter.
57 *
58 * The i386 supplement to the SVR4 ABI specification names this "auxv_t",
59 * but POSIX lays claim to all symbols ending with "_t".
60 */
61
62typedef struct {	/* Auxiliary vector entry on initial stack */
63	int	a_type;			/* Entry type. */
64	union {
65		long	a_val;		/* Integer value. */
66		void	*a_ptr;		/* Address. */
67		void	(*a_fcn)(void);	/* Function pointer (not used). */
68	} a_un;
69} Elf32_Auxinfo;
70
71#if __ELF_WORD_SIZE == 64
72/* Fake for amd64 loader support */
73typedef struct {
74	int fake;
75} Elf64_Auxinfo;
76#endif
77
78__ElfType(Auxinfo);
79
80/*
81 * Relocation types.
82 */
83
84#define	R_386_COUNT	38	/* Count of defined relocation types. */
85
86/* Define "machine" characteristics */
87#define	ELF_TARG_CLASS	ELFCLASS32
88#define	ELF_TARG_DATA	ELFDATA2LSB
89#define	ELF_TARG_MACH	EM_386
90#define	ELF_TARG_VER	1
91
92#define	ET_DYN_LOAD_ADDR 0x01001000
93
94#elif defined(__amd64__)
95
96/*
97 * ELF definitions for the AMD64 architecture.
98 */
99
100#ifndef __ELF_WORD_SIZE
101#define	__ELF_WORD_SIZE	64	/* Used by <sys/elf_generic.h> */
102#endif
103#include <sys/elf32.h>	/* Definitions common to all 32 bit architectures. */
104#include <sys/elf64.h>	/* Definitions common to all 64 bit architectures. */
105#include <sys/elf_generic.h>
106
107#define	ELF_ARCH	EM_X86_64
108#define	ELF_ARCH32	EM_386
109
110#define	ELF_MACHINE_OK(x) ((x) == EM_X86_64)
111
112/*
113 * Auxiliary vector entries for passing information to the interpreter.
114 *
115 * The i386 supplement to the SVR4 ABI specification names this "auxv_t",
116 * but POSIX lays claim to all symbols ending with "_t".
117 */
118typedef struct {	/* Auxiliary vector entry on initial stack */
119	int	a_type;			/* Entry type. */
120	union {
121		int	a_val;		/* Integer value. */
122	} a_un;
123} Elf32_Auxinfo;
124
125typedef struct {	/* Auxiliary vector entry on initial stack */
126	long	a_type;			/* Entry type. */
127	union {
128		long	a_val;		/* Integer value. */
129		void	*a_ptr;		/* Address. */
130		void	(*a_fcn)(void);	/* Function pointer (not used). */
131	} a_un;
132} Elf64_Auxinfo;
133
134__ElfType(Auxinfo);
135
136/*
137 * Relocation types.
138 */
139
140#define	R_X86_64_COUNT	24	/* Count of defined relocation types. */
141
142/* Define "machine" characteristics */
143#if __ELF_WORD_SIZE == 32
144#define ELF_TARG_CLASS  ELFCLASS32
145#else
146#define ELF_TARG_CLASS  ELFCLASS64
147#endif
148#define	ELF_TARG_DATA	ELFDATA2LSB
149#define	ELF_TARG_MACH	EM_X86_64
150#define	ELF_TARG_VER	1
151
152#if __ELF_WORD_SIZE == 32
153#define	ET_DYN_LOAD_ADDR 0x01001000
154#else
155#define	ET_DYN_LOAD_ADDR 0x01021000
156#endif
157
158#endif /* __i386__, __amd64__ */
159
160#endif /* !_MACHINE_ELF_H_ */
161