projects/linux·blob v2.6.22 · refs

148 lines · 3.5 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_Addr Elf32_Addr
20#define Elf_Section Elf32_Section
21#define ELF_ST_BIND ELF32_ST_BIND
22#define ELF_ST_TYPE ELF32_ST_TYPE
23
24#define Elf_Rel Elf32_Rel
25#define Elf_Rela Elf32_Rela
26#define ELF_R_SYM ELF32_R_SYM
27#define ELF_R_TYPE ELF32_R_TYPE
28#else
29
30#define Elf_Ehdr Elf64_Ehdr
31#define Elf_Shdr Elf64_Shdr
32#define Elf_Sym Elf64_Sym
33#define Elf_Addr Elf64_Addr
34#define Elf_Section Elf64_Section
35#define ELF_ST_BIND ELF64_ST_BIND
36#define ELF_ST_TYPE ELF64_ST_TYPE
37
38#define Elf_Rel Elf64_Rel
39#define Elf_Rela Elf64_Rela
40#define ELF_R_SYM ELF64_R_SYM
41#define ELF_R_TYPE ELF64_R_TYPE
42#endif
43
44/* The 64-bit MIPS ELF ABI uses an unusual reloc format. */
45typedef struct
46{
47 Elf32_Word r_sym; /* Symbol index */
48 unsigned char r_ssym; /* Special symbol for 2nd relocation */
49 unsigned char r_type3; /* 3rd relocation type */
50 unsigned char r_type2; /* 2nd relocation type */
51 unsigned char r_type1; /* 1st relocation type */
52} _Elf64_Mips_R_Info;
53
54typedef union
55{
56 Elf64_Xword r_info_number;
57 _Elf64_Mips_R_Info r_info_fields;
58} _Elf64_Mips_R_Info_union;
59
60#define ELF64_MIPS_R_SYM(i) \
61 ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_sym)
62
63#if KERNEL_ELFDATA != HOST_ELFDATA
64
65static inline void __endian(const void *src, void *dest, unsigned int size)
66{
67 unsigned int i;
68 for (i = 0; i < size; i++)
69 ((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1];
70}
71
72#define TO_NATIVE(x) \
73({ \
74 typeof(x) __x; \
75 __endian(&(x), &(__x), sizeof(__x)); \
76 __x; \
77})
78
79#else /* endianness matches */
80
81#define TO_NATIVE(x) (x)
82
83#endif
84
85#define NOFAIL(ptr) do_nofail((ptr), #ptr)
86void *do_nofail(void *ptr, const char *expr);
87
88struct buffer {
89 char *p;
90 int pos;
91 int size;
92};
93
94void __attribute__((format(printf, 2, 3)))
95buf_printf(struct buffer *buf, const char *fmt, ...);
96
97void
98buf_write(struct buffer *buf, const char *s, int len);
99
100struct module {
101 struct module *next;
102 const char *name;
103 int gpl_compatible;
104 struct symbol *unres;
105 int seen;
106 int skip;
107 int has_init;
108 int has_cleanup;
109 struct buffer dev_table_buf;
110 char srcversion[25];
111};
112
113struct elf_info {
114 unsigned long size;
115 Elf_Ehdr *hdr;
116 Elf_Shdr *sechdrs;
117 Elf_Sym *symtab_start;
118 Elf_Sym *symtab_stop;
119 Elf_Section export_sec;
120 Elf_Section export_unused_sec;
121 Elf_Section export_gpl_sec;
122 Elf_Section export_unused_gpl_sec;
123 Elf_Section export_gpl_future_sec;
124 const char *strtab;
125 char *modinfo;
126 unsigned int modinfo_len;
127};
128
129/* file2alias.c */
130void handle_moddevtable(struct module *mod, struct elf_info *info,
131 Elf_Sym *sym, const char *symname);
132void add_moddevtable(struct buffer *buf, struct module *mod);
133
134/* sumversion.c */
135void maybe_frob_rcs_version(const char *modfilename,
136 char *version,
137 void *modinfo,
138 unsigned long modinfo_offset);
139void get_src_version(const char *modname, char sum[], unsigned sumlen);
140
141/* from modpost.c */
142void *grab_file(const char *filename, unsigned long *size);
143char* get_next_line(unsigned long *pos, void *file, unsigned long size);
144void release_file(void *file, unsigned long size);
145
146void fatal(const char *fmt, ...);
147void warn(const char *fmt, ...);
148void merror(const char *fmt, ...);