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1 | #include <stdio.h> |
2 | #include <stdlib.h> |
3 | #include <stdarg.h> |
4 | #include <string.h> |
5 | #include <sys/types.h> |
6 | #include <sys/stat.h> |
7 | #include <sys/mman.h> |
8 | #include <fcntl.h> |
9 | #include <unistd.h> |
10 | #include <elf.h> |
11 | |
12 | #include "elfconfig.h" |
13 | |
14 | #if KERNEL_ELFCLASS == ELFCLASS32 |
15 | |
16 | #define Elf_Ehdr Elf32_Ehdr |
17 | #define Elf_Shdr Elf32_Shdr |
18 | #define Elf_Sym Elf32_Sym |
19 | #define Elf_Addr Elf32_Addr |
20 | #define Elf_Sword Elf64_Sword |
21 | #define Elf_Section Elf32_Half |
22 | #define ELF_ST_BIND ELF32_ST_BIND |
23 | #define ELF_ST_TYPE ELF32_ST_TYPE |
24 | |
25 | #define Elf_Rel Elf32_Rel |
26 | #define Elf_Rela Elf32_Rela |
27 | #define ELF_R_SYM ELF32_R_SYM |
28 | #define ELF_R_TYPE ELF32_R_TYPE |
29 | #else |
30 | |
31 | #define Elf_Ehdr Elf64_Ehdr |
32 | #define Elf_Shdr Elf64_Shdr |
33 | #define Elf_Sym Elf64_Sym |
34 | #define Elf_Addr Elf64_Addr |
35 | #define Elf_Sword Elf64_Sxword |
36 | #define Elf_Section Elf64_Half |
37 | #define ELF_ST_BIND ELF64_ST_BIND |
38 | #define ELF_ST_TYPE ELF64_ST_TYPE |
39 | |
40 | #define Elf_Rel Elf64_Rel |
41 | #define Elf_Rela Elf64_Rela |
42 | #define ELF_R_SYM ELF64_R_SYM |
43 | #define ELF_R_TYPE ELF64_R_TYPE |
44 | #endif |
45 | |
46 | /* The 64-bit MIPS ELF ABI uses an unusual reloc format. */ |
47 | typedef struct |
48 | { |
49 | Elf32_Word r_sym; /* Symbol index */ |
50 | unsigned char r_ssym; /* Special symbol for 2nd relocation */ |
51 | unsigned char r_type3; /* 3rd relocation type */ |
52 | unsigned char r_type2; /* 2nd relocation type */ |
53 | unsigned char r_type1; /* 1st relocation type */ |
54 | } _Elf64_Mips_R_Info; |
55 | |
56 | typedef union |
57 | { |
58 | Elf64_Xword r_info_number; |
59 | _Elf64_Mips_R_Info r_info_fields; |
60 | } _Elf64_Mips_R_Info_union; |
61 | |
62 | #define ELF64_MIPS_R_SYM(i) \ |
63 | ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_sym) |
64 | |
65 | #define ELF64_MIPS_R_TYPE(i) \ |
66 | ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_type1) |
67 | |
68 | #if KERNEL_ELFDATA != HOST_ELFDATA |
69 | |
70 | static inline void __endian(const void *src, void *dest, unsigned int size) |
71 | { |
72 | unsigned int i; |
73 | for (i = 0; i < size; i++) |
74 | ((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1]; |
75 | } |
76 | |
77 | #define TO_NATIVE(x) \ |
78 | ({ \ |
79 | typeof(x) __x; \ |
80 | __endian(&(x), &(__x), sizeof(__x)); \ |
81 | __x; \ |
82 | }) |
83 | |
84 | #else /* endianness matches */ |
85 | |
86 | #define TO_NATIVE(x) (x) |
87 | |
88 | #endif |
89 | |
90 | #define NOFAIL(ptr) do_nofail((ptr), #ptr) |
91 | void *do_nofail(void *ptr, const char *expr); |
92 | |
93 | struct buffer { |
94 | char *p; |
95 | int pos; |
96 | int size; |
97 | }; |
98 | |
99 | void __attribute__((format(printf, 2, 3))) |
100 | buf_printf(struct buffer *buf, const char *fmt, ...); |
101 | |
102 | void |
103 | buf_write(struct buffer *buf, const char *s, int len); |
104 | |
105 | struct module { |
106 | struct module *next; |
107 | const char *name; |
108 | int gpl_compatible; |
109 | struct symbol *unres; |
110 | int seen; |
111 | int skip; |
112 | int has_init; |
113 | int has_cleanup; |
114 | struct buffer dev_table_buf; |
115 | char srcversion[25]; |
116 | }; |
117 | |
118 | struct elf_info { |
119 | unsigned long size; |
120 | Elf_Ehdr *hdr; |
121 | Elf_Shdr *sechdrs; |
122 | Elf_Sym *symtab_start; |
123 | Elf_Sym *symtab_stop; |
124 | Elf_Section export_sec; |
125 | Elf_Section export_unused_sec; |
126 | Elf_Section export_gpl_sec; |
127 | Elf_Section export_unused_gpl_sec; |
128 | Elf_Section export_gpl_future_sec; |
129 | const char *strtab; |
130 | char *modinfo; |
131 | unsigned int modinfo_len; |
132 | |
133 | /* support for 32bit section numbers */ |
134 | |
135 | unsigned int num_sections; /* max_secindex + 1 */ |
136 | unsigned int secindex_strings; |
137 | /* if Nth symbol table entry has .st_shndx = SHN_XINDEX, |
138 | * take shndx from symtab_shndx_start[N] instead */ |
139 | Elf32_Word *symtab_shndx_start; |
140 | Elf32_Word *symtab_shndx_stop; |
141 | }; |
142 | |
143 | static inline int is_shndx_special(unsigned int i) |
144 | { |
145 | return i != SHN_XINDEX && i >= SHN_LORESERVE && i <= SHN_HIRESERVE; |
146 | } |
147 | |
148 | /* |
149 | * Move reserved section indices SHN_LORESERVE..SHN_HIRESERVE out of |
150 | * the way to -256..-1, to avoid conflicting with real section |
151 | * indices. |
152 | */ |
153 | #define SPECIAL(i) ((i) - (SHN_HIRESERVE + 1)) |
154 | |
155 | /* Accessor for sym->st_shndx, hides ugliness of "64k sections" */ |
156 | static inline unsigned int get_secindex(const struct elf_info *info, |
157 | const Elf_Sym *sym) |
158 | { |
159 | if (is_shndx_special(sym->st_shndx)) |
160 | return SPECIAL(sym->st_shndx); |
161 | if (sym->st_shndx != SHN_XINDEX) |
162 | return sym->st_shndx; |
163 | return info->symtab_shndx_start[sym - info->symtab_start]; |
164 | } |
165 | |
166 | /* file2alias.c */ |
167 | extern unsigned int cross_build; |
168 | void handle_moddevtable(struct module *mod, struct elf_info *info, |
169 | Elf_Sym *sym, const char *symname); |
170 | void add_moddevtable(struct buffer *buf, struct module *mod); |
171 | |
172 | /* sumversion.c */ |
173 | void maybe_frob_rcs_version(const char *modfilename, |
174 | char *version, |
175 | void *modinfo, |
176 | unsigned long modinfo_offset); |
177 | void get_src_version(const char *modname, char sum[], unsigned sumlen); |
178 | |
179 | /* from modpost.c */ |
180 | void *grab_file(const char *filename, unsigned long *size); |
181 | char* get_next_line(unsigned long *pos, void *file, unsigned long size); |
182 | void release_file(void *file, unsigned long size); |
183 | |
184 | void fatal(const char *fmt, ...); |
185 | void warn(const char *fmt, ...); |
186 | void merror(const char *fmt, ...); |
187 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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v3.9