root/scripts/mod/modpost.h

INCLUDED FROM

DEFINITIONS

1. __endian

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>
#include <elf.h>

#include "elfconfig.h"

#if KERNEL_ELFCLASS == ELFCLASS32

#define Elf_Ehdr    Elf32_Ehdr
#define Elf_Shdr    Elf32_Shdr
#define Elf_Sym     Elf32_Sym
#define Elf_Addr    Elf32_Addr
#define Elf_Sword   Elf64_Sword
#define Elf_Section Elf32_Half
#define ELF_ST_BIND ELF32_ST_BIND
#define ELF_ST_TYPE ELF32_ST_TYPE

#define Elf_Rel     Elf32_Rel
#define Elf_Rela    Elf32_Rela
#define ELF_R_SYM   ELF32_R_SYM
#define ELF_R_TYPE  ELF32_R_TYPE
#else

#define Elf_Ehdr    Elf64_Ehdr
#define Elf_Shdr    Elf64_Shdr
#define Elf_Sym     Elf64_Sym
#define Elf_Addr    Elf64_Addr
#define Elf_Sword   Elf64_Sxword
#define Elf_Section Elf64_Half
#define ELF_ST_BIND ELF64_ST_BIND
#define ELF_ST_TYPE ELF64_ST_TYPE

#define Elf_Rel     Elf64_Rel
#define Elf_Rela    Elf64_Rela
#define ELF_R_SYM   ELF64_R_SYM
#define ELF_R_TYPE  ELF64_R_TYPE
#endif

/* The 64-bit MIPS ELF ABI uses an unusual reloc format. */
typedef struct
{
        Elf32_Word    r_sym;    /* Symbol index */
        unsigned char r_ssym;   /* Special symbol for 2nd relocation */
        unsigned char r_type3;  /* 3rd relocation type */
        unsigned char r_type2;  /* 2nd relocation type */
        unsigned char r_type1;  /* 1st relocation type */
} _Elf64_Mips_R_Info;

typedef union
{
        Elf64_Xword             r_info_number;
        _Elf64_Mips_R_Info      r_info_fields;
} _Elf64_Mips_R_Info_union;

#define ELF64_MIPS_R_SYM(i) \
  ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_sym)

#define ELF64_MIPS_R_TYPE(i) \
  ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_type1)

#if KERNEL_ELFDATA != HOST_ELFDATA

static inline void __endian(const void *src, void *dest, unsigned int size)
{
        unsigned int i;
        for (i = 0; i < size; i++)
                ((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1];
}

#define TO_NATIVE(x)                                            \
({                                                              \
        typeof(x) __x;                                          \
        __endian(&(x), &(__x), sizeof(__x));                    \
        __x;                                                    \
})

#else /* endianness matches */

#define TO_NATIVE(x) (x)

#endif

#define NOFAIL(ptr)   do_nofail((ptr), #ptr)
void *do_nofail(void *ptr, const char *expr);

struct buffer {
        char *p;
        int pos;
        int size;
};

void __attribute__((format(printf, 2, 3)))
buf_printf(struct buffer *buf, const char *fmt, ...);

void
buf_write(struct buffer *buf, const char *s, int len);

struct module {
        struct module *next;
        const char *name;
        int gpl_compatible;
        struct symbol *unres;
        int seen;
        int skip;
        int has_init;
        int has_cleanup;
        struct buffer dev_table_buf;
        char **markers;
        size_t nmarkers;
        char         srcversion[25];
};

struct elf_info {
        unsigned long size;
        Elf_Ehdr     *hdr;
        Elf_Shdr     *sechdrs;
        Elf_Sym      *symtab_start;
        Elf_Sym      *symtab_stop;
        Elf_Section  export_sec;
        Elf_Section  export_unused_sec;
        Elf_Section  export_gpl_sec;
        Elf_Section  export_unused_gpl_sec;
        Elf_Section  export_gpl_future_sec;
        Elf_Section  markers_strings_sec;
        const char   *strtab;
        char         *modinfo;
        unsigned int modinfo_len;
};

/* file2alias.c */
extern unsigned int cross_build;
void handle_moddevtable(struct module *mod, struct elf_info *info,
                        Elf_Sym *sym, const char *symname);
void add_moddevtable(struct buffer *buf, struct module *mod);

/* sumversion.c */
void maybe_frob_rcs_version(const char *modfilename,
                            char *version,
                            void *modinfo,
                            unsigned long modinfo_offset);
void get_src_version(const char *modname, char sum[], unsigned sumlen);

/* from modpost.c */
void *grab_file(const char *filename, unsigned long *size);
char* get_next_line(unsigned long *pos, void *file, unsigned long size);
void release_file(void *file, unsigned long size);

void fatal(const char *fmt, ...);
void warn(const char *fmt, ...);
void merror(const char *fmt, ...);