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1 | /* |
1 | /* |
2 | * Copyright (C) 2006 Sergey Bondari |
2 | * Copyright (C) 2006 Sergey Bondari |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | #ifndef __ELF32_H__ |
29 | #ifndef __ELF32_H__ |
30 | #define __ELF32_H__ |
30 | #define __ELF32_H__ |
31 | 31 | ||
32 | #include <arch/types.h> |
32 | #include <arch/types.h> |
33 | #include <mm/as.h> |
33 | #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 |
44 | #define ET_REL 1 // Relocatable file |
44 | #define ET_REL 1 // Relocatable file |
45 | #define ET_EXEC 2 // Executable |
45 | #define ET_EXEC 2 // Executable |
46 | #define ET_DYN 3 // Shared object |
46 | #define ET_DYN 3 // Shared object |
47 | #define ET_CORE 4 // Core |
47 | #define ET_CORE 4 // Core |
48 | #define ET_LOPROC 0xff00 // Processor specific |
48 | #define ET_LOPROC 0xff00 // Processor specific |
49 | #define ET_HIPROC 0xffff // Processor specific |
49 | #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 |
55 | #define EM_M32 1 // AT&T WE 32100 |
56 | #define EM_SPARC 2 // SPARC |
56 | #define EM_SPARC 2 // SPARC |
57 | #define EM_386 3 // i386 |
57 | #define EM_386 3 // i386 |
58 | #define EM_68K 4 // Motorola 68000 |
58 | #define EM_68K 4 // Motorola 68000 |
59 | #define EM_88K 5 // Motorola 88000 |
59 | #define EM_88K 5 // Motorola 88000 |
60 | #define EM_860 7 // i80860 |
60 | #define EM_860 7 // i80860 |
61 | #define EM_MIPS 8 // MIPS RS3000 |
61 | #define EM_MIPS 8 // MIPS RS3000 |
62 | 62 | ||
63 | /** |
63 | /** |
64 | * ELF identification indexes |
64 | * ELF identification indexes |
65 | */ |
65 | */ |
66 | #define EI_MAG0 0 |
66 | #define EI_MAG0 0 |
67 | #define EI_MAG1 1 |
67 | #define EI_MAG1 1 |
68 | #define EI_MAG2 2 |
68 | #define EI_MAG2 2 |
69 | #define EI_MAG3 3 |
69 | #define EI_MAG3 3 |
70 | #define EI_CLASS 4 // File class |
70 | #define EI_CLASS 4 // File class |
71 | #define EI_DATA 5 // Data encoding |
71 | #define EI_DATA 5 // Data encoding |
72 | #define EI_VERSION 6 // File version |
72 | #define EI_VERSION 6 // File version |
73 | #define EI_PAD 7 // Start of padding bytes |
73 | #define EI_PAD 7 // Start of padding bytes |
74 | #define EI_NIDENT 16 // ELF identification table size |
74 | #define EI_NIDENT 16 // ELF identification table size |
75 | 75 | ||
76 | /** |
76 | /** |
77 | * ELF magic number |
77 | * ELF magic number |
78 | */ |
78 | */ |
79 | #define ELFMAG0 0x7f |
79 | #define ELFMAG0 0x7f |
80 | #define ELFMAG1 'E' |
80 | #define ELFMAG1 'E' |
81 | #define ELFMAG2 'L' |
81 | #define ELFMAG2 'L' |
82 | #define ELFMAG3 'F' |
82 | #define ELFMAG3 'F' |
83 | 83 | ||
84 | /** |
84 | /** |
85 | * ELF file classes |
85 | * ELF file classes |
86 | */ |
86 | */ |
87 | #define ELFCLASSNONE 0 |
87 | #define ELFCLASSNONE 0 |
88 | #define ELFCLASS32 1 |
88 | #define ELFCLASS32 1 |
89 | #define ELFCLASS64 2 |
89 | #define ELFCLASS64 2 |
90 | 90 | ||
91 | /** |
91 | /** |
92 | * ELF data encoding types |
92 | * ELF data encoding types |
93 | */ |
93 | */ |
94 | #define ELFDATANONE 0 |
94 | #define ELFDATANONE 0 |
95 | #define ELFDATA2LSB 1 // Least significant byte first (little endian) |
95 | #define ELFDATA2LSB 1 // Least significant byte first (little endian) |
96 | #define ELFDATA2MSB 2 // Most signigicant byte first (Big endian) |
96 | #define ELFDATA2MSB 2 // Most signigicant byte first (Big endian) |
97 | 97 | ||
98 | /** |
98 | /** |
99 | * ELF error return codes |
99 | * ELF error return codes |
100 | */ |
100 | */ |
101 | #define EE_OK 0 // No error |
101 | #define EE_OK 0 // No error |
102 | #define EE_INVALID 1 // invalid ELF image |
102 | #define EE_INVALID 1 // invalid ELF image |
103 | #define EE_MEMORY 2 // cannot allocate address space |
103 | #define EE_MEMORY 2 // cannot allocate address space |
104 | #define EE_INCOMPATIBLE 3 // ELF image is not compatible with current architecture |
104 | #define EE_INCOMPATIBLE 3 // ELF image is not compatible with current architecture |
105 | #define EE_UNSUPPORTED 4 // Non-supported ELF (e.g. dynamic ELFs) |
105 | #define EE_UNSUPPORTED 4 // Non-supported ELF (e.g. dynamic ELFs) |
106 | 106 | ||
107 | 107 | ||
108 | /** |
108 | /** |
109 | * ELF section types |
109 | * ELF section types |
110 | */ |
110 | */ |
111 | #define SHT_NULL 0 |
111 | #define SHT_NULL 0 |
112 | #define SHT_PROGBITS 1 |
112 | #define SHT_PROGBITS 1 |
113 | #define SHT_SYMTAB 2 |
113 | #define SHT_SYMTAB 2 |
114 | #define SHT_STRTAB 3 |
114 | #define SHT_STRTAB 3 |
115 | #define SHT_RELA 4 |
115 | #define SHT_RELA 4 |
116 | #define SHT_HASH 5 |
116 | #define SHT_HASH 5 |
117 | #define SHT_DYNAMIC 6 |
117 | #define SHT_DYNAMIC 6 |
118 | #define SHT_NOTE 7 |
118 | #define SHT_NOTE 7 |
119 | #define SHT_NOBITS 8 |
119 | #define SHT_NOBITS 8 |
120 | #define SHT_REL 9 |
120 | #define SHT_REL 9 |
121 | #define SHT_SHLIB 10 |
121 | #define SHT_SHLIB 10 |
122 | #define SHT_DYNSYM 11 |
122 | #define SHT_DYNSYM 11 |
123 | #define SHT_LOPROC 0x70000000 |
123 | #define SHT_LOPROC 0x70000000 |
124 | #define SHT_HIPROC 0x7fffffff |
124 | #define SHT_HIPROC 0x7fffffff |
125 | #define SHT_LOUSER 0x80000000 |
125 | #define SHT_LOUSER 0x80000000 |
126 | #define SHT_HIUSER 0xffffffff |
126 | #define SHT_HIUSER 0xffffffff |
127 | 127 | ||
128 | /** |
128 | /** |
129 | * ELF section flags |
129 | * ELF section flags |
130 | */ |
130 | */ |
131 | #define SHF_WRITE 0x1 |
131 | #define SHF_WRITE 0x1 |
132 | #define SHF_ALLOC 0x2 |
132 | #define SHF_ALLOC 0x2 |
133 | #define SHF_EXECINSTR 0x4 |
133 | #define SHF_EXECINSTR 0x4 |
134 | #define SHF_MASKPROC 0xf0000000 |
134 | #define SHF_MASKPROC 0xf0000000 |
135 | 135 | ||
136 | /** |
136 | /** |
137 | * 32-bit ELF data types |
137 | * 32-bit ELF data types |
138 | */ |
138 | */ |
139 | typedef __u32 elf32_addr; |
139 | typedef __u32 elf32_addr; |
140 | typedef __u16 elf32_half; |
140 | typedef __u16 elf32_half; |
141 | typedef __u32 elf32_off; |
141 | typedef __u32 elf32_off; |
142 | typedef int elf32_sword; |
142 | typedef int elf32_sword; |
143 | typedef __u32 elf32_word; |
143 | typedef __u32 elf32_word; |
144 | 144 | ||
145 | /** |
145 | /** |
146 | * 32-bit ELF header |
146 | * 32-bit ELF header |
147 | */ |
147 | */ |
148 | struct elf32_header { |
148 | struct elf32_header { |
149 | __u8 e_ident[EI_NIDENT]; |
149 | __u8 e_ident[EI_NIDENT]; |
150 | elf32_half e_type; |
150 | elf32_half e_type; |
151 | elf32_half e_machine; |
151 | elf32_half e_machine; |
152 | elf32_word e_version; |
152 | elf32_word e_version; |
153 | elf32_addr e_entry; |
153 | elf32_addr e_entry; |
154 | elf32_off e_phoff; |
154 | elf32_off e_phoff; |
155 | elf32_off e_shoff; |
155 | elf32_off e_shoff; |
156 | elf32_word e_flags; |
156 | elf32_word e_flags; |
157 | elf32_half e_ehsize; |
157 | elf32_half e_ehsize; |
158 | elf32_half e_phentsize; |
158 | elf32_half e_phentsize; |
159 | elf32_half e_phnum; |
159 | elf32_half e_phnum; |
160 | elf32_half e_shentsize; |
160 | elf32_half e_shentsize; |
161 | elf32_half e_shnum; |
161 | elf32_half e_shnum; |
162 | elf32_half e_shstrndx; |
162 | elf32_half e_shstrndx; |
163 | }; |
163 | }; |
164 | 164 | ||
165 | 165 | ||
166 | /* |
166 | /* |
167 | * 32-bit ELF section header |
167 | * 32-bit ELF section header |
168 | */ |
168 | */ |
169 | struct elf32_section_header { |
169 | struct elf32_section_header { |
170 | elf32_word sh_name; |
170 | elf32_word sh_name; |
171 | elf32_word sh_type; |
171 | elf32_word sh_type; |
172 | elf32_word sh_flags; |
172 | elf32_word sh_flags; |
173 | elf32_addr sh_addr; |
173 | elf32_addr sh_addr; |
174 | elf32_off sh_offset; |
174 | elf32_off sh_offset; |
175 | elf32_word sh_size; |
175 | elf32_word sh_size; |
176 | elf32_word sh_link; |
176 | elf32_word sh_link; |
177 | elf32_word sh_info; |
177 | elf32_word sh_info; |
178 | elf32_word sh_addralign; |
178 | elf32_word sh_addralign; |
179 | elf32_word sh_entsize; |
179 | elf32_word sh_entsize; |
180 | } |
180 | }; |
181 | 181 | ||
182 | 182 | ||
183 | typedef struct elf32_header elf32_header_t; |
183 | typedef struct elf32_header elf32_header_t; |
184 | typedef struct elf32_section_header elf32_section_header_t; |
184 | typedef struct elf32_section_header elf32_section_header_t; |
185 | 185 | ||
186 | 186 | ||
187 | extern int elf32_load(__address header, as_t * as); |
187 | extern int elf32_load(__address header, as_t * as); |
188 | 188 | ||
189 | #endif |
189 | #endif |
190 | 190 |