elf.h revision 325810 
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: stable/11/sys/powerpc/include/elf.h 325810 2017-11-14 16:03:07Z jhb $
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#ifndef __ELF_WORD_SIZE
40#ifdef __powerpc64__
41#define	__ELF_WORD_SIZE	64	/* Used by <sys/elf_generic.h> */
42#else
43#define	__ELF_WORD_SIZE	32	/* Used by <sys/elf_generic.h> */
44#endif
45#endif
46
47#include <sys/elf32.h>	/* Definitions common to all 32 bit architectures. */
48#include <sys/elf64.h>	/* Definitions common to all 64 bit architectures. */
49#include <sys/elf_generic.h>
50
51#if __ELF_WORD_SIZE == 64
52#define	ELF_ARCH	EM_PPC64
53#define	ELF_MACHINE_OK(x) ((x) == EM_PPC64)
54#else
55#define	ELF_ARCH	EM_PPC
56#define	ELF_ARCH32	EM_PPC
57#define	ELF_MACHINE_OK(x) ((x) == EM_PPC)
58#endif
59
60/*
61 * Auxiliary vector entries for passing information to the interpreter.
62 *
63 * The PowerPC supplement to the SVR4 ABI specification names this "auxv_t",
64 * but POSIX lays claim to all symbols ending with "_t".
65 */
66
67typedef struct {	/* Auxiliary vector entry on initial stack */
68	int	a_type;			/* Entry type. */
69	union {
70		long	a_val;		/* Integer value. */
71		void	*a_ptr;		/* Address. */
72		void	(*a_fcn)(void);	/* Function pointer (not used). */
73	} a_un;
74} Elf32_Auxinfo;
75
76typedef struct {	/* Auxiliary vector entry on initial stack */
77	long	a_type;			/* Entry type. */
78	union {
79		long	a_val;		/* Integer value. */
80		void	*a_ptr;		/* Address. */
81		void	(*a_fcn)(void);	/* Function pointer (not used). */
82	} a_un;
83} Elf64_Auxinfo;
84
85__ElfType(Auxinfo);
86
87/* Values for a_type. */
88#define	AT_NULL		0	/* Terminates the vector. */
89#define	AT_IGNORE	1	/* Ignored entry. */
90#define	AT_EXECFD	2	/* File descriptor of program to load. */
91#define	AT_PHDR		3	/* Program header of program already loaded. */
92#define	AT_PHENT	4	/* Size of each program header entry. */
93#define	AT_PHNUM	5	/* Number of program header entries. */
94#define	AT_PAGESZ	6	/* Page size in bytes. */
95#define	AT_BASE		7	/* Interpreter's base address. */
96#define	AT_FLAGS	8	/* Flags (unused for PowerPC). */
97#define	AT_ENTRY	9	/* Where interpreter should transfer control. */
98#define	AT_DCACHEBSIZE	10	/* Data cache block size for the processor. */
99#define	AT_ICACHEBSIZE	11	/* Instruction cache block size for the uP. */
100#define	AT_UCACHEBSIZE	12	/* Cache block size, or `0' if cache not unified. */
101#define	AT_EXECPATH	13	/* Path to the executable. */
102#define	AT_CANARY	14	/* Canary for SSP */
103#define	AT_CANARYLEN	15	/* Length of the canary. */
104#define	AT_OSRELDATE	16	/* OSRELDATE. */
105#define	AT_NCPUS	17	/* Number of CPUs. */
106#define	AT_PAGESIZES	18	/* Pagesizes. */
107#define	AT_PAGESIZESLEN	19	/* Number of pagesizes. */
108#define	AT_STACKPROT	21	/* Initial stack protection. */
109#define	AT_TIMEKEEP	22	/* Pointer to timehands. */
110#define	AT_EHDRFLAGS	24	/* e_flags field from elf hdr */
111#define	AT_HWCAP	25	/* CPU feature flags. */
112#define	AT_HWCAP2	26	/* CPU feature flags 2. */
113
114#define	AT_COUNT	27	/* Count of defined aux entry types. */
115
116/*
117 * Relocation types.
118 */
119
120#define	R_PPC_COUNT		37	/* Count of defined relocation types. */
121
122					/* Count of defined relocation types. */
123#define	R_PPC_EMB_COUNT		(R_PPC_EMB_RELSDA - R_PPC_EMB_NADDR32 + 1)
124
125/* Define "machine" characteristics */
126#if __ELF_WORD_SIZE == 64
127#define	ELF_TARG_CLASS	ELFCLASS64
128#define	ELF_TARG_DATA	ELFDATA2MSB
129#define	ELF_TARG_MACH	EM_PPC64
130#define	ELF_TARG_VER	1
131#else
132#define	ELF_TARG_CLASS	ELFCLASS32
133#define	ELF_TARG_DATA	ELFDATA2MSB
134#define	ELF_TARG_MACH	EM_PPC
135#define	ELF_TARG_VER	1
136#endif
137
138#define	ET_DYN_LOAD_ADDR 0x01010000
139
140#endif /* !_MACHINE_ELF_H_ */
141