modpost.h revision c8d8b837ebe4b4f11e1b0c4a2bdc358c697692ed
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/* The 64-bit MIPS ELF ABI uses an unusual reloc format. */ 43typedef struct 44{ 45 Elf32_Word r_sym; /* Symbol index */ 46 unsigned char r_ssym; /* Special symbol for 2nd relocation */ 47 unsigned char r_type3; /* 3rd relocation type */ 48 unsigned char r_type2; /* 2nd relocation type */ 49 unsigned char r_type1; /* 1st relocation type */ 50} _Elf64_Mips_R_Info; 51 52typedef union 53{ 54 Elf64_Xword r_info_number; 55 _Elf64_Mips_R_Info r_info_fields; 56} _Elf64_Mips_R_Info_union; 57 58#define ELF64_MIPS_R_SYM(i) \ 59 ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_sym) 60 61#if KERNEL_ELFDATA != HOST_ELFDATA 62 63static inline void __endian(const void *src, void *dest, unsigned int size) 64{ 65 unsigned int i; 66 for (i = 0; i < size; i++) 67 ((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1]; 68} 69 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 struct symbol *unres; 104 int seen; 105 int skip; 106 int has_init; 107 int has_cleanup; 108 struct buffer dev_table_buf; 109 char srcversion[25]; 110}; 111 112struct elf_info { 113 unsigned long size; 114 Elf_Ehdr *hdr; 115 Elf_Shdr *sechdrs; 116 Elf_Sym *symtab_start; 117 Elf_Sym *symtab_stop; 118 const char *strtab; 119 char *modinfo; 120 unsigned int modinfo_len; 121}; 122 123/* file2alias.c */ 124void handle_moddevtable(struct module *mod, struct elf_info *info, 125 Elf_Sym *sym, const char *symname); 126void add_moddevtable(struct buffer *buf, struct module *mod); 127 128/* sumversion.c */ 129void maybe_frob_rcs_version(const char *modfilename, 130 char *version, 131 void *modinfo, 132 unsigned long modinfo_offset); 133void get_src_version(const char *modname, char sum[], unsigned sumlen); 134 135/* from modpost.c */ 136void *grab_file(const char *filename, unsigned long *size); 137char* get_next_line(unsigned long *pos, void *file, unsigned long size); 138void release_file(void *file, unsigned long size); 139 140void fatal(const char *fmt, ...); 141void warn(const char *fmt, ...); 142