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, ...); 149