Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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#define ELF64_MIPS_R_TYPE(i) \
64 ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_type1)
65
66#if KERNEL_ELFDATA != HOST_ELFDATA
67
68static inline void __endian(const void *src, void *dest, unsigned int size)
69{
70 unsigned int i;
71 for (i = 0; i < size; i++)
72 ((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1];
73}
74
75#define TO_NATIVE(x) \
76({ \
77 typeof(x) __x; \
78 __endian(&(x), &(__x), sizeof(__x)); \
79 __x; \
80})
81
82#else /* endianness matches */
83
84#define TO_NATIVE(x) (x)
85
86#endif
87
88#define NOFAIL(ptr) do_nofail((ptr), #ptr)
89void *do_nofail(void *ptr, const char *expr);
90
91struct buffer {
92 char *p;
93 int pos;
94 int size;
95};
96
97void __attribute__((format(printf, 2, 3)))
98buf_printf(struct buffer *buf, const char *fmt, ...);
99
100void
101buf_write(struct buffer *buf, const char *s, int len);
102
103struct module {
104 struct module *next;
105 const char *name;
106 int gpl_compatible;
107 struct symbol *unres;
108 int seen;
109 int skip;
110 int has_init;
111 int has_cleanup;
112 struct buffer dev_table_buf;
113 char srcversion[25];
114};
115
116struct elf_info {
117 unsigned long size;
118 Elf_Ehdr *hdr;
119 Elf_Shdr *sechdrs;
120 Elf_Sym *symtab_start;
121 Elf_Sym *symtab_stop;
122 Elf_Section export_sec;
123 Elf_Section export_unused_sec;
124 Elf_Section export_gpl_sec;
125 Elf_Section export_unused_gpl_sec;
126 Elf_Section export_gpl_future_sec;
127 const char *strtab;
128 char *modinfo;
129 unsigned int modinfo_len;
130};
131
132/* file2alias.c */
133void handle_moddevtable(struct module *mod, struct elf_info *info,
134 Elf_Sym *sym, const char *symname);
135void add_moddevtable(struct buffer *buf, struct module *mod);
136
137/* sumversion.c */
138void maybe_frob_rcs_version(const char *modfilename,
139 char *version,
140 void *modinfo,
141 unsigned long modinfo_offset);
142void get_src_version(const char *modname, char sum[], unsigned sumlen);
143
144/* from modpost.c */
145void *grab_file(const char *filename, unsigned long *size);
146char* get_next_line(unsigned long *pos, void *file, unsigned long size);
147void release_file(void *file, unsigned long size);
148
149void fatal(const char *fmt, ...);
150void warn(const char *fmt, ...);
151void merror(const char *fmt, ...);