projects/linux·blob v2.6.13 · refs

107 lines · 2.2 KiB

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
34static 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)
57void *do_nofail(void *ptr, const char *expr);
58
59struct buffer {
60 char *p;
61 int pos;
62 int size;
63};
64
65void __attribute__((format(printf, 2, 3)))
66buf_printf(struct buffer *buf, const char *fmt, ...);
67
68void
69buf_write(struct buffer *buf, const char *s, int len);
70
71struct 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
83struct 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
94void handle_moddevtable(struct module *mod, struct elf_info *info,
95 Elf_Sym *sym, const char *symname);
96
97void add_moddevtable(struct buffer *buf, struct module *mod);
98
99void maybe_frob_rcs_version(const char *modfilename,
100 char *version,
101 void *modinfo,
102 unsigned long modinfo_offset);
103void get_src_version(const char *modname, char sum[], unsigned sumlen);
104
105void *grab_file(const char *filename, unsigned long *size);
106char* get_next_line(unsigned long *pos, void *file, unsigned long size);
107void release_file(void *file, unsigned long size);