1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2001 David E. O'Brien
5 * Copyright (c) 1996-1997 John D. Polstra.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
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#ifdef __powerpc64__
71 int a_val; /* Integer value */
72#else
73 long a_val; /* Integer value. */
74 void *a_ptr; /* Address. */
75 void (*a_fcn)(void); /* Function pointer (not used). */
76#endif
77 } a_un;
78} Elf32_Auxinfo;
79
80typedef struct { /* Auxiliary vector entry on initial stack */
81 long a_type; /* Entry type. */
82 union {
83 long a_val; /* Integer value. */
84 void *a_ptr; /* Address. */
85 void (*a_fcn)(void); /* Function pointer (not used). */
86 } a_un;
87} Elf64_Auxinfo;
88
89__ElfType(Auxinfo);
90
91/*
92 * Relocation types.
93 */
94
95#define R_PPC_COUNT 37 /* Count of defined relocation types. */
96
97 /* Count of defined relocation types. */
98#define R_PPC_EMB_COUNT (R_PPC_EMB_RELSDA - R_PPC_EMB_NADDR32 + 1)
99
100/* Define "machine" characteristics */
101#if BYTE_ORDER == LITTLE_ENDIAN
102#define ELF_TARG_DATA ELFDATA2LSB
103#else
104#define ELF_TARG_DATA ELFDATA2MSB
105#endif
106#if __ELF_WORD_SIZE == 64
107#define ELF_TARG_CLASS ELFCLASS64
108#define ELF_TARG_MACH EM_PPC64
109#define ELF_TARG_VER 1
110#else
111#define ELF_TARG_CLASS ELFCLASS32
112#define ELF_TARG_MACH EM_PPC
113#define ELF_TARG_VER 1
114#endif
115
116#define ET_DYN_LOAD_ADDR 0x01010000
117
118#define AT_OLD_NULL AT_NULL
119#define AT_OLD_IGNORE AT_IGNORE
120#define AT_OLD_EXECFD AT_EXECFD
121#define AT_OLD_PHDR AT_PHDR
122#define AT_OLD_PHENT AT_PHENT
123#define AT_OLD_PHNUM AT_PHNUM
124#define AT_OLD_PAGESZ AT_PAGESZ
125#define AT_OLD_BASE AT_BASE
126#define AT_OLD_FLAGS AT_FLAGS
127#define AT_OLD_ENTRY AT_ENTRY
128#define AT_OLD_NOTELF AT_NOTELF
129#define AT_OLD_UID AT_UID
130#define AT_OLD_EUID AT_EUID
131#define AT_OLD_EXECPATH 13
132#define AT_OLD_CANARY 14
133#define AT_OLD_CANARYLEN 15
134#define AT_OLD_OSRELDATE 16
135#define AT_OLD_NCPUS 17
136#define AT_OLD_PAGESIZES 18
137#define AT_OLD_PAGESIZESLEN 19
138#define AT_OLD_STACKPROT 21
139#define AT_OLD_TIMEKEEP AT_TIMEKEEP
140#define AT_OLD_EHDRFLAGS AT_EHDRFLAGS
141#define AT_OLD_HWCAP AT_HWCAP
142#define AT_OLD_HWCAP2 AT_HWCAP2
143
144#define AT_OLD_COUNT 27 /* Count of defined aux entry types. */
145
146#endif /* !_MACHINE_ELF_H_ */