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_Rela Elf32_Rela 25 #define ELF_R_SYM ELF32_R_SYM 26 #define ELF_R_TYPE ELF32_R_TYPE 27 #else 28 29 #define Elf_Ehdr Elf64_Ehdr 30 #define Elf_Shdr Elf64_Shdr 31 #define Elf_Sym Elf64_Sym 32 #define Elf_Addr Elf64_Addr 33 #define Elf_Section Elf64_Section 34 #define ELF_ST_BIND ELF64_ST_BIND 35 #define ELF_ST_TYPE ELF64_ST_TYPE 36 37 #define Elf_Rela Elf64_Rela 38 #define ELF_R_SYM ELF64_R_SYM 39 #define ELF_R_TYPE ELF64_R_TYPE 40 #endif 41 42 #if KERNEL_ELFDATA != HOST_ELFDATA 43 44 static inline void __endian(const void *src, void *dest, unsigned int size) 45 { 46 unsigned int i; 47 for (i = 0; i < size; i++) 48 ((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1]; 49 } 50 51 52 53 #define TO_NATIVE(x) \ 54 ({ \ 55 typeof(x) __x; \ 56 __endian(&(x), &(__x), sizeof(__x)); \ 57 __x; \ 58 }) 59 60 #else /* endianness matches */ 61 62 #define TO_NATIVE(x) (x) 63 64 #endif 65 66 #define NOFAIL(ptr) do_nofail((ptr), #ptr) 67 void *do_nofail(void *ptr, const char *expr); 68 69 struct buffer { 70 char *p; 71 int pos; 72 int size; 73 }; 74 75 void __attribute__((format(printf, 2, 3))) 76 buf_printf(struct buffer *buf, const char *fmt, ...); 77 78 void 79 buf_write(struct buffer *buf, const char *s, int len); 80 81 struct module { 82 struct module *next; 83 const char *name; 84 struct symbol *unres; 85 int seen; 86 int skip; 87 int has_init; 88 int has_cleanup; 89 struct buffer dev_table_buf; 90 char srcversion[25]; 91 }; 92 93 struct elf_info { 94 unsigned long size; 95 Elf_Ehdr *hdr; 96 Elf_Shdr *sechdrs; 97 Elf_Sym *symtab_start; 98 Elf_Sym *symtab_stop; 99 const char *strtab; 100 char *modinfo; 101 unsigned int modinfo_len; 102 }; 103 104 /* file2alias.c */ 105 void handle_moddevtable(struct module *mod, struct elf_info *info, 106 Elf_Sym *sym, const char *symname); 107 void add_moddevtable(struct buffer *buf, struct module *mod); 108 109 /* sumversion.c */ 110 void maybe_frob_rcs_version(const char *modfilename, 111 char *version, 112 void *modinfo, 113 unsigned long modinfo_offset); 114 void get_src_version(const char *modname, char sum[], unsigned sumlen); 115 116 /* from modpost.c */ 117 void *grab_file(const char *filename, unsigned long *size); 118 char* get_next_line(unsigned long *pos, void *file, unsigned long size); 119 void release_file(void *file, unsigned long size); 120 121 void fatal(const char *fmt, ...); 122 void warn(const char *fmt, ...); 123