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1da177e4 LT |
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_ST_BIND ELF32_ST_BIND | |
20 | #define ELF_ST_TYPE ELF32_ST_TYPE | |
21 | ||
22 | #else | |
23 | ||
24 | #define Elf_Ehdr Elf64_Ehdr | |
25 | #define Elf_Shdr Elf64_Shdr | |
26 | #define Elf_Sym Elf64_Sym | |
27 | #define ELF_ST_BIND ELF64_ST_BIND | |
28 | #define ELF_ST_TYPE ELF64_ST_TYPE | |
29 | ||
30 | #endif | |
31 | ||
32 | #if KERNEL_ELFDATA != HOST_ELFDATA | |
33 | ||
34 | static inline void __endian(const void *src, void *dest, unsigned int size) | |
35 | { | |
36 | unsigned int i; | |
37 | for (i = 0; i < size; i++) | |
38 | ((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1]; | |
39 | } | |
40 | ||
41 | ||
42 | ||
43 | #define TO_NATIVE(x) \ | |
44 | ({ \ | |
45 | typeof(x) __x; \ | |
46 | __endian(&(x), &(__x), sizeof(__x)); \ | |
47 | __x; \ | |
48 | }) | |
49 | ||
50 | #else /* endianness matches */ | |
51 | ||
52 | #define TO_NATIVE(x) (x) | |
53 | ||
54 | #endif | |
55 | ||
56 | #define NOFAIL(ptr) do_nofail((ptr), #ptr) | |
57 | void *do_nofail(void *ptr, const char *expr); | |
58 | ||
59 | struct buffer { | |
60 | char *p; | |
61 | int pos; | |
62 | int size; | |
63 | }; | |
64 | ||
65 | void __attribute__((format(printf, 2, 3))) | |
66 | buf_printf(struct buffer *buf, const char *fmt, ...); | |
67 | ||
68 | void | |
69 | buf_write(struct buffer *buf, const char *s, int len); | |
70 | ||
71 | struct module { | |
72 | struct module *next; | |
73 | const char *name; | |
74 | struct symbol *unres; | |
75 | int seen; | |
76 | int skip; | |
77 | int has_init; | |
78 | int has_cleanup; | |
79 | struct buffer dev_table_buf; | |
80 | char srcversion[25]; | |
81 | }; | |
82 | ||
83 | struct elf_info { | |
84 | unsigned long size; | |
85 | Elf_Ehdr *hdr; | |
86 | Elf_Shdr *sechdrs; | |
87 | Elf_Sym *symtab_start; | |
88 | Elf_Sym *symtab_stop; | |
89 | const char *strtab; | |
90 | char *modinfo; | |
91 | unsigned int modinfo_len; | |
92 | }; | |
93 | ||
94 | void handle_moddevtable(struct module *mod, struct elf_info *info, | |
95 | Elf_Sym *sym, const char *symname); | |
96 | ||
97 | void add_moddevtable(struct buffer *buf, struct module *mod); | |
98 | ||
99 | void maybe_frob_rcs_version(const char *modfilename, | |
100 | char *version, | |
101 | void *modinfo, | |
102 | unsigned long modinfo_offset); | |
103 | void get_src_version(const char *modname, char sum[], unsigned sumlen); | |
104 | ||
105 | void *grab_file(const char *filename, unsigned long *size); | |
106 | char* get_next_line(unsigned long *pos, void *file, unsigned long size); | |
107 | void release_file(void *file, unsigned long size); |