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/*
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/*
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 * Copyright (C) 2006 Sergey Bondari
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 * Copyright (C) 2006 Sergey Bondari
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 * All rights reserved.
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 * All rights reserved.
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 *
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * are met:
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 *
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 *
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 * - Redistributions of source code must retain the above copyright
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *   derived from this software without specific prior written permission.
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 *
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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#ifndef __ELF32_H__
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#ifndef __ELF32_H__
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#define __ELF32_H__
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#define __ELF32_H__
31
 
31
 
32
#include <arch/types.h>
32
#include <arch/types.h>
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#include <mm/as.h>
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#include <mm/as.h>
34
 
34
 
35
/**
35
/**
36
 * current ELF version
36
 * current ELF version
37
 */
37
 */
38
#define EV_CURRENT  1
38
#define EV_CURRENT  1
39
 
39
 
40
/**
40
/**
41
 * ELF types
41
 * ELF types
42
 */
42
 */
43
#define ET_NONE     0   // No type
43
#define ET_NONE     0   // No type
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#define ET_REL      1   // Relocatable file
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#define ET_REL      1   // Relocatable file
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#define ET_EXEC     2   // Executable
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#define ET_EXEC     2   // Executable
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#define ET_DYN      3   // Shared object
46
#define ET_DYN      3   // Shared object
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#define ET_CORE     4   // Core
47
#define ET_CORE     4   // Core
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#define ET_LOPROC   0xff00  // Processor specific
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#define ET_LOPROC   0xff00  // Processor specific
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#define ET_HIPROC   0xffff  // Processor specific
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#define ET_HIPROC   0xffff  // Processor specific
50
 
50
 
51
/**
51
/**
52
 * ELF machine types
52
 * ELF machine types
53
 */
53
 */
54
#define EM_NO       0   // No machine
54
#define EM_NO       0   // No machine
55
#define EM_M32      1   // AT&T WE 32100
-
 
56
#define EM_SPARC    2   // SPARC
55
#define EM_SPARC    2   // SPARC
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#define EM_386      3   // i386
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#define EM_386      3   // i386
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#define EM_68K      4   // Motorola 68000
-
 
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#define EM_88K      5   // Motorola 88000
-
 
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#define EM_860      7   // i80860
-
 
61
#define EM_MIPS     8   // MIPS RS3000
57
#define EM_MIPS     8   // MIPS RS3000
-
 
58
#define EM_MIPS_RS3_LE  10  // MIPS RS3000 LE
-
 
59
#define EM_PPC      20  // PPC32
-
 
60
#define EM_PPC64    21  // PPC64
-
 
61
#define EM_SPARCV9  43  // SPARC64
-
 
62
#define EM_IA_64    50  // IA-64
-
 
63
#define EM_X86_64   62  // AMD64/EMT64
62
 
64
 
63
/**
65
/**
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 * ELF identification indexes
66
 * ELF identification indexes
65
 */
67
 */
66
#define EI_MAG0     0
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#define EI_MAG0     0
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#define EI_MAG1     1
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#define EI_MAG1     1
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#define EI_MAG2     2
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#define EI_MAG2     2
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#define EI_MAG3     3
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#define EI_MAG3     3
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#define EI_CLASS    4   // File class
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#define EI_CLASS    4   // File class
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#define EI_DATA     5   // Data encoding
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#define EI_DATA     5   // Data encoding
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#define EI_VERSION  6   // File version
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#define EI_VERSION  6   // File version
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#define EI_PAD      7   // Start of padding bytes
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#define EI_PAD      7   // Start of padding bytes
74
#define EI_NIDENT   16  // ELF identification table size
76
#define EI_NIDENT   16  // ELF identification table size
75
 
77
 
76
/**
78
/**
77
 * ELF magic number
79
 * ELF magic number
78
 */
80
 */
79
#define ELFMAG0     0x7f
81
#define ELFMAG0     0x7f
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#define ELFMAG1     'E'
82
#define ELFMAG1     'E'
81
#define ELFMAG2     'L'
83
#define ELFMAG2     'L'
82
#define ELFMAG3     'F'
84
#define ELFMAG3     'F'
83
 
85
 
84
/**
86
/**
85
 * ELF file classes
87
 * ELF file classes
86
 */
88
 */
87
#define ELFCLASSNONE    0
89
#define ELFCLASSNONE    0
88
#define ELFCLASS32  1
90
#define ELFCLASS32  1
89
#define ELFCLASS64  2
91
#define ELFCLASS64  2
90
 
92
 
91
/**
93
/**
92
 * ELF data encoding types
94
 * ELF data encoding types
93
 */
95
 */
94
#define ELFDATANONE 0
96
#define ELFDATANONE 0
95
#define ELFDATA2LSB 1   // Least significant byte first (little endian)
97
#define ELFDATA2LSB 1   // Least significant byte first (little endian)
96
#define ELFDATA2MSB 2   // Most signigicant byte first (Big endian)
98
#define ELFDATA2MSB 2   // Most signigicant byte first (Big endian)
97
 
99
 
98
/**
100
/**
99
 * ELF error return codes
101
 * ELF error return codes
100
 */
102
 */
101
#define EE_OK           0   // No error
103
#define EE_OK           0   // No error
102
#define EE_INVALID      1   // invalid ELF image
104
#define EE_INVALID      1   // invalid ELF image
103
#define EE_MEMORY       2   // cannot allocate address space
105
#define EE_MEMORY       2   // cannot allocate address space
104
#define EE_INCOMPATIBLE     3   // ELF image is not compatible with current architecture
106
#define EE_INCOMPATIBLE     3   // ELF image is not compatible with current architecture
105
#define EE_UNSUPPORTED      4   // Non-supported ELF (e.g. dynamic ELFs)
107
#define EE_UNSUPPORTED      4   // Non-supported ELF (e.g. dynamic ELFs)
106
 
108
 
107
 
109
 
108
/**
110
/**
109
 * ELF section types
111
 * ELF section types
110
 */
112
 */
111
#define SHT_NULL        0
113
#define SHT_NULL        0
112
#define SHT_PROGBITS        1
114
#define SHT_PROGBITS        1
113
#define SHT_SYMTAB      2
115
#define SHT_SYMTAB      2
114
#define SHT_STRTAB      3
116
#define SHT_STRTAB      3
115
#define SHT_RELA        4
117
#define SHT_RELA        4
116
#define SHT_HASH        5
118
#define SHT_HASH        5
117
#define SHT_DYNAMIC     6
119
#define SHT_DYNAMIC     6
118
#define SHT_NOTE        7
120
#define SHT_NOTE        7
119
#define SHT_NOBITS      8
121
#define SHT_NOBITS      8
120
#define SHT_REL         9
122
#define SHT_REL         9
121
#define SHT_SHLIB       10
123
#define SHT_SHLIB       10
122
#define SHT_DYNSYM      11
124
#define SHT_DYNSYM      11
123
#define SHT_LOPROC      0x70000000
125
#define SHT_LOPROC      0x70000000
124
#define SHT_HIPROC      0x7fffffff
126
#define SHT_HIPROC      0x7fffffff
125
#define SHT_LOUSER      0x80000000
127
#define SHT_LOUSER      0x80000000
126
#define SHT_HIUSER      0xffffffff
128
#define SHT_HIUSER      0xffffffff
127
 
129
 
128
/**
130
/**
129
 * ELF section flags
131
 * ELF section flags
130
 */
132
 */
131
#define SHF_WRITE       0x1 
133
#define SHF_WRITE       0x1 
132
#define SHF_ALLOC       0x2
134
#define SHF_ALLOC       0x2
133
#define SHF_EXECINSTR       0x4
135
#define SHF_EXECINSTR       0x4
134
#define SHF_MASKPROC        0xf0000000
136
#define SHF_MASKPROC        0xf0000000
135
 
137
 
136
 
138
 
137
/**
139
/**
138
 * Symbol binding
140
 * Symbol binding
139
 */
141
 */
140
#define STB_LOCAL       0
142
#define STB_LOCAL       0
141
#define STB_GLOBAL      1
143
#define STB_GLOBAL      1
142
#define STB_WEAK        2
144
#define STB_WEAK        2
143
#define STB_LOPROC      13
145
#define STB_LOPROC      13
144
#define STB_HIPROC      15
146
#define STB_HIPROC      15
145
 
147
 
146
/**
148
/**
147
 * Symbol types
149
 * Symbol types
148
 */
150
 */
149
#define STT_NOTYPE      0
151
#define STT_NOTYPE      0
150
#define STT_OBJECT      1
152
#define STT_OBJECT      1
151
#define STT_FUNC        2
153
#define STT_FUNC        2
152
#define STT_SECTION     3
154
#define STT_SECTION     3
153
#define STT_FILE        4
155
#define STT_FILE        4
154
#define STT_LOPROC      13
156
#define STT_LOPROC      13
155
#define STT_HIPROC      15
157
#define STT_HIPROC      15
156
 
158
 
157
 
159
 
158
/**
160
/**
159
 * Program segment types
161
 * Program segment types
160
 */
162
 */
161
#define PT_NULL         0
163
#define PT_NULL         0
162
#define PT_LOAD         1
164
#define PT_LOAD         1
163
#define PT_DYNAMIC      2
165
#define PT_DYNAMIC      2
164
#define PT_INTERP       3
166
#define PT_INTERP       3
165
#define PT_NOTE         4
167
#define PT_NOTE         4
166
#define PT_SHLIB        5
168
#define PT_SHLIB        5
167
#define PT_PHDR         6
169
#define PT_PHDR         6
168
#define PT_LOPROC       0x70000000
170
#define PT_LOPROC       0x70000000
169
#define PT_HIPROC       0x7fffffff
171
#define PT_HIPROC       0x7fffffff
170
 
172
 
171
/**
173
/**
172
 * 32-bit ELF data types
174
 * 32-bit ELF data types
173
 */
175
 */
174
typedef __u32 elf32_addr;
176
typedef __u32 elf32_addr;
175
typedef __u16 elf32_half;
177
typedef __u16 elf32_half;
176
typedef __u32 elf32_off;
178
typedef __u32 elf32_off;
177
typedef int elf32_sword;
179
typedef int elf32_sword;
178
typedef __u32 elf32_word;
180
typedef __u32 elf32_word;
179
 
181
 
180
/**
182
/**
181
 * 32-bit ELF header
183
 * 32-bit ELF header
182
 */
184
 */
183
struct elf32_header {
185
struct elf32_header {
184
    __u8 e_ident[EI_NIDENT];
186
    __u8 e_ident[EI_NIDENT];
185
    elf32_half e_type;
187
    elf32_half e_type;
186
    elf32_half e_machine;
188
    elf32_half e_machine;
187
    elf32_word e_version;
189
    elf32_word e_version;
188
    elf32_addr e_entry;
190
    elf32_addr e_entry;
189
    elf32_off e_phoff;
191
    elf32_off e_phoff;
190
    elf32_off e_shoff;
192
    elf32_off e_shoff;
191
    elf32_word e_flags;
193
    elf32_word e_flags;
192
    elf32_half e_ehsize;
194
    elf32_half e_ehsize;
193
    elf32_half e_phentsize;
195
    elf32_half e_phentsize;
194
    elf32_half e_phnum;
196
    elf32_half e_phnum;
195
    elf32_half e_shentsize;
197
    elf32_half e_shentsize;
196
    elf32_half e_shnum;
198
    elf32_half e_shnum;
197
    elf32_half e_shstrndx;
199
    elf32_half e_shstrndx;
198
};
200
};
199
 
201
 
200
 
202
 
201
/*
203
/*
202
 * 32-bit ELF section header
204
 * 32-bit ELF section header
203
 */
205
 */
204
struct elf32_section_header {
206
struct elf32_section_header {
205
    elf32_word sh_name;
207
    elf32_word sh_name;
206
    elf32_word sh_type;
208
    elf32_word sh_type;
207
    elf32_word sh_flags;
209
    elf32_word sh_flags;
208
    elf32_addr sh_addr;
210
    elf32_addr sh_addr;
209
    elf32_off sh_offset;
211
    elf32_off sh_offset;
210
    elf32_word sh_size;
212
    elf32_word sh_size;
211
    elf32_word sh_link;
213
    elf32_word sh_link;
212
    elf32_word sh_info;
214
    elf32_word sh_info;
213
    elf32_word sh_addralign;
215
    elf32_word sh_addralign;
214
    elf32_word sh_entsize;
216
    elf32_word sh_entsize;
215
};
217
};
216
 
218
 
217
 
219
 
218
/*
220
/*
219
 * 32-bit ELF symbol table entry
221
 * 32-bit ELF symbol table entry
220
 */
222
 */
221
struct elf32_symbol {
223
struct elf32_symbol {
222
    elf32_word st_name;
224
    elf32_word st_name;
223
    elf32_addr st_value;
225
    elf32_addr st_value;
224
    elf32_word st_size;
226
    elf32_word st_size;
225
    __u8 st_info;
227
    __u8 st_info;
226
    __u8 st_other;
228
    __u8 st_other;
227
    elf32_half st_shndx;
229
    elf32_half st_shndx;
228
};
230
};
229
 
231
 
230
 
232
 
231
/*
233
/*
232
 * 32-bit ELF program header
234
 * 32-bit ELF program header
233
 */
235
 */
234
struct elf32_program_header {
236
struct elf32_program_header {
235
    elf32_word p_type;
237
    elf32_word p_type;
236
    elf32_off p_offset;
238
    elf32_off p_offset;
237
    elf32_addr pv_addr;
239
    elf32_addr pv_addr;
238
    elf32_addr pp_addr;
240
    elf32_addr pp_addr;
239
    elf32_word p_filesz;
241
    elf32_word p_filesz;
240
    elf32_word p_memsz;
242
    elf32_word p_memsz;
241
    elf32_word p_flags;
243
    elf32_word p_flags;
242
    elf32_word p_align;
244
    elf32_word p_align;
243
};
245
};
244
 
246
 
245
typedef struct elf32_header elf32_header_t;
247
typedef struct elf32_header elf32_header_t;
246
typedef struct elf32_section_header elf32_section_header_t;
248
typedef struct elf32_section_header elf32_section_header_t;
247
typedef struct elf32_symbol elf32_symbol_t;
249
typedef struct elf32_symbol elf32_symbol_t;
248
typedef struct elf32_program_header elf32_program_header_t;
250
typedef struct elf32_program_header elf32_program_header_t;
249
 
251
 
250
 
252
 
251
 
253
 
252
extern int elf32_load(__address header, as_t * as);
254
extern int elf32_load(__address header, as_t * as);
253
 
255
 
254
#endif
256
#endif
255
 
257