elf.h revision 186212 
1/*-
2 * Copyright (c) 2001 David E. O'Brien
3 * Copyright (c) 1996-1997 John D. Polstra.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: head/sys/powerpc/include/elf.h 186212 2008-12-17 06:56:58Z imp $
28 */
29
30#ifndef _MACHINE_ELF_H_
31#define	_MACHINE_ELF_H_ 1
32
33/*
34 * EABI ELF definitions for the PowerPC architecture.
35 * See "PowerPC Embedded Application Binary Interface, 32-Bit Impliementation"
36 * [ppc-eabi-1995-01.pdf] for details.
37 */
38
39#include <sys/elf32.h>	/* Definitions common to all 32 bit architectures. */
40
41#define	__ELF_WORD_SIZE	32	/* Used by <sys/elf_generic.h> */
42#include <sys/elf_generic.h>
43
44#define	ELF_ARCH	EM_PPC
45
46#define	ELF_MACHINE_OK(x) ((x) == EM_PPC)
47
48/*
49 * Auxiliary vector entries for passing information to the interpreter.
50 *
51 * The PowerPC supplement to the SVR4 ABI specification names this "auxv_t",
52 * but POSIX lays claim to all symbols ending with "_t".
53 */
54
55typedef struct {	/* Auxiliary vector entry on initial stack */
56	int	a_type;			/* Entry type. */
57	union {
58		long	a_val;		/* Integer value. */
59		void	*a_ptr;		/* Address. */
60		void	(*a_fcn)(void);	/* Function pointer (not used). */
61	} a_un;
62} Elf32_Auxinfo;
63
64__ElfType(Auxinfo);
65
66/* Values for a_type. */
67#define	AT_NULL		0	/* Terminates the vector. */
68#define	AT_IGNORE	1	/* Ignored entry. */
69#define	AT_EXECFD	2	/* File descriptor of program to load. */
70#define	AT_PHDR		3	/* Program header of program already loaded. */
71#define	AT_PHENT	4	/* Size of each program header entry. */
72#define	AT_PHNUM	5	/* Number of program header entries. */
73#define	AT_PAGESZ	6	/* Page size in bytes. */
74#define	AT_BASE		7	/* Interpreter's base address. */
75#define	AT_FLAGS	8	/* Flags (unused for PowerPC). */
76#define	AT_ENTRY	9	/* Where interpreter should transfer control. */
77#define	AT_DCACHEBSIZE	10	/* Data cache block size for the processor. */
78#define	AT_ICACHEBSIZE	11	/* Instruction cache block size for the uP. */
79#define	AT_UCACHEBSIZE	12	/* Cache block size, or `0' if cache not unified. */
80
81#define	AT_COUNT	13	/* Count of defined aux entry types. */
82
83/*
84 * Relocation types.
85 */
86
87#define	R_PPC_COUNT		37	/* Count of defined relocation types. */
88
89					/* Count of defined relocation types. */
90#define	R_PPC_EMB_COUNT		(R_PPC_EMB_RELSDA - R_PPC_EMB_NADDR32 + 1)
91
92/* Define "machine" characteristics */
93#define	ELF_TARG_CLASS	ELFCLASS32
94#define	ELF_TARG_DATA	ELFDATA2MSB
95#define	ELF_TARG_MACH	EM_PPC
96#define	ELF_TARG_VER	1
97
98#endif /* !_MACHINE_ELF_H_ */
99