Rev 909 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
854 | bondari | 1 | /* |
2 | * Copyright (C) 2006 Sergey Bondari |
||
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 | * |
||
9 | * - Redistributions of source code must retain the above copyright |
||
10 | * notice, this list of conditions and the following disclaimer. |
||
11 | * - 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 | * - The name of the author may not be used to endorse or promote products |
||
15 | * derived from this software without specific prior written permission. |
||
16 | * |
||
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
27 | */ |
||
28 | |||
29 | #ifndef __ELF32_H__ |
||
30 | #define __ELF32_H__ |
||
31 | |||
32 | #include <arch/types.h> |
||
33 | #include <mm/as.h> |
||
34 | |||
35 | /** |
||
36 | * current ELF version |
||
37 | */ |
||
38 | #define EV_CURRENT 1 |
||
39 | |||
40 | /** |
||
41 | * ELF types |
||
42 | */ |
||
43 | #define ET_NONE 0 // No type |
||
44 | #define ET_REL 1 // Relocatable file |
||
45 | #define ET_EXEC 2 // Executable |
||
46 | #define ET_DYN 3 // Shared object |
||
47 | #define ET_CORE 4 // Core |
||
48 | #define ET_LOPROC 0xff00 // Processor specific |
||
49 | #define ET_HIPROC 0xffff // Processor specific |
||
50 | |||
51 | /** |
||
52 | * ELF machine types |
||
53 | */ |
||
54 | #define EM_NO 0 // No machine |
||
55 | #define EM_SPARC 2 // SPARC |
||
56 | #define EM_386 3 // i386 |
||
57 | #define EM_MIPS 8 // MIPS RS3000 |
||
910 | bondari | 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 |
||
854 | bondari | 64 | |
65 | /** |
||
66 | * ELF identification indexes |
||
67 | */ |
||
68 | #define EI_MAG0 0 |
||
69 | #define EI_MAG1 1 |
||
70 | #define EI_MAG2 2 |
||
71 | #define EI_MAG3 3 |
||
72 | #define EI_CLASS 4 // File class |
||
73 | #define EI_DATA 5 // Data encoding |
||
74 | #define EI_VERSION 6 // File version |
||
75 | #define EI_PAD 7 // Start of padding bytes |
||
76 | #define EI_NIDENT 16 // ELF identification table size |
||
77 | |||
78 | /** |
||
79 | * ELF magic number |
||
80 | */ |
||
81 | #define ELFMAG0 0x7f |
||
82 | #define ELFMAG1 'E' |
||
83 | #define ELFMAG2 'L' |
||
84 | #define ELFMAG3 'F' |
||
85 | |||
86 | /** |
||
87 | * ELF file classes |
||
88 | */ |
||
89 | #define ELFCLASSNONE 0 |
||
90 | #define ELFCLASS32 1 |
||
91 | #define ELFCLASS64 2 |
||
92 | |||
93 | /** |
||
94 | * ELF data encoding types |
||
95 | */ |
||
96 | #define ELFDATANONE 0 |
||
97 | #define ELFDATA2LSB 1 // Least significant byte first (little endian) |
||
98 | #define ELFDATA2MSB 2 // Most signigicant byte first (Big endian) |
||
99 | |||
100 | /** |
||
101 | * ELF error return codes |
||
102 | */ |
||
103 | #define EE_OK 0 // No error |
||
104 | #define EE_INVALID 1 // invalid ELF image |
||
105 | #define EE_MEMORY 2 // cannot allocate address space |
||
106 | #define EE_INCOMPATIBLE 3 // ELF image is not compatible with current architecture |
||
107 | #define EE_UNSUPPORTED 4 // Non-supported ELF (e.g. dynamic ELFs) |
||
108 | |||
109 | |||
855 | bondari | 110 | /** |
111 | * ELF section types |
||
112 | */ |
||
113 | #define SHT_NULL 0 |
||
114 | #define SHT_PROGBITS 1 |
||
115 | #define SHT_SYMTAB 2 |
||
116 | #define SHT_STRTAB 3 |
||
117 | #define SHT_RELA 4 |
||
118 | #define SHT_HASH 5 |
||
119 | #define SHT_DYNAMIC 6 |
||
120 | #define SHT_NOTE 7 |
||
121 | #define SHT_NOBITS 8 |
||
122 | #define SHT_REL 9 |
||
123 | #define SHT_SHLIB 10 |
||
124 | #define SHT_DYNSYM 11 |
||
125 | #define SHT_LOPROC 0x70000000 |
||
126 | #define SHT_HIPROC 0x7fffffff |
||
127 | #define SHT_LOUSER 0x80000000 |
||
128 | #define SHT_HIUSER 0xffffffff |
||
129 | |||
130 | /** |
||
131 | * ELF section flags |
||
132 | */ |
||
133 | #define SHF_WRITE 0x1 |
||
134 | #define SHF_ALLOC 0x2 |
||
135 | #define SHF_EXECINSTR 0x4 |
||
136 | #define SHF_MASKPROC 0xf0000000 |
||
137 | |||
909 | bondari | 138 | |
855 | bondari | 139 | /** |
909 | bondari | 140 | * Symbol binding |
141 | */ |
||
142 | #define STB_LOCAL 0 |
||
143 | #define STB_GLOBAL 1 |
||
144 | #define STB_WEAK 2 |
||
145 | #define STB_LOPROC 13 |
||
146 | #define STB_HIPROC 15 |
||
147 | |||
148 | /** |
||
149 | * Symbol types |
||
150 | */ |
||
151 | #define STT_NOTYPE 0 |
||
152 | #define STT_OBJECT 1 |
||
153 | #define STT_FUNC 2 |
||
154 | #define STT_SECTION 3 |
||
155 | #define STT_FILE 4 |
||
156 | #define STT_LOPROC 13 |
||
157 | #define STT_HIPROC 15 |
||
158 | |||
159 | |||
160 | /** |
||
161 | * Program segment types |
||
162 | */ |
||
163 | #define PT_NULL 0 |
||
164 | #define PT_LOAD 1 |
||
165 | #define PT_DYNAMIC 2 |
||
166 | #define PT_INTERP 3 |
||
167 | #define PT_NOTE 4 |
||
168 | #define PT_SHLIB 5 |
||
169 | #define PT_PHDR 6 |
||
170 | #define PT_LOPROC 0x70000000 |
||
171 | #define PT_HIPROC 0x7fffffff |
||
172 | |||
173 | /** |
||
854 | bondari | 174 | * 32-bit ELF data types |
175 | */ |
||
176 | typedef __u32 elf32_addr; |
||
177 | typedef __u16 elf32_half; |
||
178 | typedef __u32 elf32_off; |
||
179 | typedef int elf32_sword; |
||
180 | typedef __u32 elf32_word; |
||
181 | |||
855 | bondari | 182 | /** |
854 | bondari | 183 | * 32-bit ELF header |
184 | */ |
||
185 | struct elf32_header { |
||
186 | __u8 e_ident[EI_NIDENT]; |
||
187 | elf32_half e_type; |
||
188 | elf32_half e_machine; |
||
189 | elf32_word e_version; |
||
190 | elf32_addr e_entry; |
||
191 | elf32_off e_phoff; |
||
192 | elf32_off e_shoff; |
||
193 | elf32_word e_flags; |
||
194 | elf32_half e_ehsize; |
||
195 | elf32_half e_phentsize; |
||
196 | elf32_half e_phnum; |
||
197 | elf32_half e_shentsize; |
||
198 | elf32_half e_shnum; |
||
199 | elf32_half e_shstrndx; |
||
200 | }; |
||
201 | |||
855 | bondari | 202 | |
203 | /* |
||
204 | * 32-bit ELF section header |
||
205 | */ |
||
206 | struct elf32_section_header { |
||
207 | elf32_word sh_name; |
||
208 | elf32_word sh_type; |
||
209 | elf32_word sh_flags; |
||
210 | elf32_addr sh_addr; |
||
211 | elf32_off sh_offset; |
||
212 | elf32_word sh_size; |
||
213 | elf32_word sh_link; |
||
214 | elf32_word sh_info; |
||
215 | elf32_word sh_addralign; |
||
216 | elf32_word sh_entsize; |
||
856 | bondari | 217 | }; |
855 | bondari | 218 | |
219 | |||
909 | bondari | 220 | /* |
221 | * 32-bit ELF symbol table entry |
||
222 | */ |
||
223 | struct elf32_symbol { |
||
224 | elf32_word st_name; |
||
225 | elf32_addr st_value; |
||
226 | elf32_word st_size; |
||
227 | __u8 st_info; |
||
228 | __u8 st_other; |
||
229 | elf32_half st_shndx; |
||
230 | }; |
||
231 | |||
232 | |||
233 | /* |
||
234 | * 32-bit ELF program header |
||
235 | */ |
||
236 | struct elf32_program_header { |
||
237 | elf32_word p_type; |
||
238 | elf32_off p_offset; |
||
239 | elf32_addr pv_addr; |
||
240 | elf32_addr pp_addr; |
||
241 | elf32_word p_filesz; |
||
242 | elf32_word p_memsz; |
||
243 | elf32_word p_flags; |
||
244 | elf32_word p_align; |
||
245 | }; |
||
246 | |||
855 | bondari | 247 | typedef struct elf32_header elf32_header_t; |
248 | typedef struct elf32_section_header elf32_section_header_t; |
||
909 | bondari | 249 | typedef struct elf32_symbol elf32_symbol_t; |
250 | typedef struct elf32_program_header elf32_program_header_t; |
||
855 | bondari | 251 | |
252 | |||
909 | bondari | 253 | |
854 | bondari | 254 | extern int elf32_load(__address header, as_t * as); |
255 | |||
256 | #endif |