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. */ 45 typedef 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 54 typedef 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 65 static 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) 86 void *do_nofail(void *ptr, const char *expr); 87 88 struct buffer { 89 char *p; 90 int pos; 91 int size; 92 }; 93 94 void __attribute__((format(printf, 2, 3))) 95 buf_printf(struct buffer *buf, const char *fmt, ...); 96 97 void 98 buf_write(struct buffer *buf, const char *s, int len); 99 100 struct 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 }; 112 113 struct 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_gpl_sec; 121 Elf_Section export_gpl_future_sec; 122 const char *strtab; 123 char *modinfo; 124 unsigned int modinfo_len; 125 }; 126 127 /* file2alias.c */ 128 void handle_moddevtable(struct module *mod, struct elf_info *info, 129 Elf_Sym *sym, const char *symname); 130 void add_moddevtable(struct buffer *buf, struct module *mod); 131 132 /* sumversion.c */ 133 void maybe_frob_rcs_version(const char *modfilename, 134 char *version, 135 void *modinfo, 136 unsigned long modinfo_offset); 137 void get_src_version(const char *modname, char sum[], unsigned sumlen); 138 139 /* from modpost.c */ 140 void *grab_file(const char *filename, unsigned long *size); 141 char* get_next_line(unsigned long *pos, void *file, unsigned long size); 142 void release_file(void *file, unsigned long size); 143 144 void fatal(const char *fmt, ...); 145 void warn(const char *fmt, ...); 146