xref: /freebsd/sys/arm64/include/elf.h (revision 0957b409)
1 /*-
2  * Copyright (c) 1996-1997 John D. Polstra.
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 PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 #ifndef	_MACHINE_ELF_H_
30 #define	_MACHINE_ELF_H_
31 
32 /*
33  * ELF definitions for the AArch64 architecture.
34  */
35 
36 #include <sys/elf32.h>	/* Definitions common to all 32 bit architectures. */
37 #include <sys/elf64.h>	/* Definitions common to all 64 bit architectures. */
38 
39 #ifndef __ELF_WORD_SIZE
40 #define	__ELF_WORD_SIZE	64	/* Used by <sys/elf_generic.h> */
41 #endif
42 
43 #include <sys/elf_generic.h>
44 
45 /*
46  * Auxiliary vector entries for passing information to the interpreter.
47  */
48 
49 typedef struct {	/* Auxiliary vector entry on initial stack */
50 	int	a_type;			/* Entry type. */
51 	union {
52 		int	a_val;		/* Integer value. */
53 	} a_un;
54 } Elf32_Auxinfo;
55 
56 typedef struct {	/* Auxiliary vector entry on initial stack */
57 	long	a_type;			/* Entry type. */
58 	union {
59 		long	a_val;		/* Integer value. */
60 		void	*a_ptr;		/* Address. */
61 		void	(*a_fcn)(void);	/* Function pointer (not used). */
62 	} a_un;
63 } Elf64_Auxinfo;
64 
65 __ElfType(Auxinfo);
66 
67 #define	ELF_ARCH	EM_AARCH64
68 
69 #define	ELF_MACHINE_OK(x) ((x) == (ELF_ARCH))
70 
71 /* Define "machine" characteristics */
72 #if __ELF_WORD_SIZE == 64
73 #define	ELF_TARG_CLASS	ELFCLASS64
74 #define	ELF_TARG_DATA	ELFDATA2LSB
75 #define	ELF_TARG_MACH	EM_AARCH64
76 #define	ELF_TARG_VER	1
77 #else
78 #define	ELF_TARG_CLASS	ELFCLASS32
79 #define	ELF_TARG_DATA	ELFDATA2LSB
80 #define	ELF_TARG_MACH	EM_ARM
81 #define	ELF_TARG_VER	1
82 #endif
83 
84 #if __ELF_WORD_SIZE == 32
85 #define	ET_DYN_LOAD_ADDR 0x12000
86 #else
87 #define	ET_DYN_LOAD_ADDR 0x100000
88 #endif
89 
90 #endif /* !_MACHINE_ELF_H_ */
91