Change sendfile() to use the new m_ext callback scheme for cleaning up after
[dragonfly.git] / sys / sys / elf64.h
CommitLineData
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1/*-
2 * Copyright (c) 1996-1998 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: src/sys/sys/elf64.h,v 1.9 1999/08/28 00:51:42 peter Exp $
dc62b251 27 * $DragonFly: src/sys/sys/elf64.h,v 1.3 2003/11/10 06:12:17 dillon Exp $
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28 */
29
30#ifndef _SYS_ELF64_H_
31#define _SYS_ELF64_H_ 1
32
33#include <sys/elf_common.h>
34
35/*
36 * ELF definitions common to all 64-bit architectures.
37 */
38
39typedef u_int64_t Elf64_Addr;
40typedef u_int32_t Elf64_Half;
41typedef u_int64_t Elf64_Off;
42typedef int64_t Elf64_Sword;
43typedef u_int64_t Elf64_Word;
44typedef u_int64_t Elf64_Size;
45typedef u_int16_t Elf64_Quarter;
dc62b251 46typedef Elf64_Half Elf64_Hashelt;
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47
48/*
49 * ELF header.
50 */
51
52typedef struct {
53 unsigned char e_ident[EI_NIDENT]; /* File identification. */
54 Elf64_Quarter e_type; /* File type. */
55 Elf64_Quarter e_machine; /* Machine architecture. */
56 Elf64_Half e_version; /* ELF format version. */
57 Elf64_Addr e_entry; /* Entry point. */
58 Elf64_Off e_phoff; /* Program header file offset. */
59 Elf64_Off e_shoff; /* Section header file offset. */
60 Elf64_Half e_flags; /* Architecture-specific flags. */
61 Elf64_Quarter e_ehsize; /* Size of ELF header in bytes. */
62 Elf64_Quarter e_phentsize; /* Size of program header entry. */
63 Elf64_Quarter e_phnum; /* Number of program header entries. */
64 Elf64_Quarter e_shentsize; /* Size of section header entry. */
65 Elf64_Quarter e_shnum; /* Number of section header entries. */
66 Elf64_Quarter e_shstrndx; /* Section name strings section. */
67} Elf64_Ehdr;
68
69/*
70 * Section header.
71 */
72
73typedef struct {
74 Elf64_Half sh_name; /* Section name (index into the
75 section header string table). */
76 Elf64_Half sh_type; /* Section type. */
77 Elf64_Size sh_flags; /* Section flags. */
78 Elf64_Addr sh_addr; /* Address in memory image. */
79 Elf64_Off sh_offset; /* Offset in file. */
80 Elf64_Size sh_size; /* Size in bytes. */
81 Elf64_Half sh_link; /* Index of a related section. */
82 Elf64_Half sh_info; /* Depends on section type. */
83 Elf64_Size sh_addralign; /* Alignment in bytes. */
84 Elf64_Size sh_entsize; /* Size of each entry in section. */
85} Elf64_Shdr;
86
87/*
88 * Program header.
89 */
90
91typedef struct {
92 Elf64_Half p_type; /* Entry type. */
93 Elf64_Half p_flags; /* Access permission flags. */
94 Elf64_Off p_offset; /* File offset of contents. */
95 Elf64_Addr p_vaddr; /* Virtual address in memory image. */
96 Elf64_Addr p_paddr; /* Physical address (not used). */
97 Elf64_Size p_filesz; /* Size of contents in file. */
98 Elf64_Size p_memsz; /* Size of contents in memory. */
99 Elf64_Size p_align; /* Alignment in memory and file. */
100} Elf64_Phdr;
101
102/*
103 * Dynamic structure. The ".dynamic" section contains an array of them.
104 */
105
106typedef struct {
107 Elf64_Size d_tag; /* Entry type. */
108 union {
109 Elf64_Size d_val; /* Integer value. */
110 Elf64_Addr d_ptr; /* Address value. */
111 } d_un;
112} Elf64_Dyn;
113
114/*
115 * Relocation entries.
116 */
117
118/* Relocations that don't need an addend field. */
119typedef struct {
120 Elf64_Addr r_offset; /* Location to be relocated. */
121 Elf64_Size r_info; /* Relocation type and symbol index. */
122} Elf64_Rel;
123
124/* Relocations that need an addend field. */
125typedef struct {
126 Elf64_Addr r_offset; /* Location to be relocated. */
127 Elf64_Size r_info; /* Relocation type and symbol index. */
128 Elf64_Off r_addend; /* Addend. */
129} Elf64_Rela;
130
131/* Macros for accessing the fields of r_info. */
132#define ELF64_R_SYM(info) ((info) >> 32)
133#define ELF64_R_TYPE(info) ((unsigned char)(info))
134
135/* Macro for constructing r_info from field values. */
136#define ELF64_R_INFO(sym, type) (((sym) << 32) + (unsigned char)(type))
137
138/*
139 * Symbol table entries.
140 */
141
142typedef struct {
143 Elf64_Half st_name; /* String table index of name. */
144 unsigned char st_info; /* Type and binding information. */
145 unsigned char st_other; /* Reserved (not used). */
146 Elf64_Quarter st_shndx; /* Section index of symbol. */
147 Elf64_Addr st_value; /* Symbol value. */
148 Elf64_Size st_size; /* Size of associated object. */
149} Elf64_Sym;
150
151/* Macros for accessing the fields of st_info. */
152#define ELF64_ST_BIND(info) ((info) >> 4)
153#define ELF64_ST_TYPE(info) ((info) & 0xf)
154
155/* Macro for constructing st_info from field values. */
156#define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
157
158#endif /* !_SYS_ELF64_H_ */