linux/include/linux/moduleloader.h
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   1#ifndef _LINUX_MODULELOADER_H
   2#define _LINUX_MODULELOADER_H
   3/* The stuff needed for archs to support modules. */
   4
   5#include <linux/module.h>
   6#include <linux/elf.h>
   7
   8/* These may be implemented by architectures that need to hook into the
   9 * module loader code.  Architectures that don't need to do anything special
  10 * can just rely on the 'weak' default hooks defined in kernel/module.c.
  11 * Note, however, that at least one of apply_relocate or apply_relocate_add
  12 * must be implemented by each architecture.
  13 */
  14
  15/* Adjust arch-specific sections.  Return 0 on success.  */
  16int module_frob_arch_sections(Elf_Ehdr *hdr,
  17                              Elf_Shdr *sechdrs,
  18                              char *secstrings,
  19                              struct module *mod);
  20
  21/* Additional bytes needed by arch in front of individual sections */
  22unsigned int arch_mod_section_prepend(struct module *mod, unsigned int section);
  23
  24/* Allocator used for allocating struct module, core sections and init
  25   sections.  Returns NULL on failure. */
  26void *module_alloc(unsigned long size);
  27
  28/* Free memory returned from module_alloc. */
  29void module_free(struct module *mod, void *module_region);
  30
  31/* Apply the given relocation to the (simplified) ELF.  Return -error
  32   or 0. */
  33int apply_relocate(Elf_Shdr *sechdrs,
  34                   const char *strtab,
  35                   unsigned int symindex,
  36                   unsigned int relsec,
  37                   struct module *mod);
  38
  39/* Apply the given add relocation to the (simplified) ELF.  Return
  40   -error or 0 */
  41int apply_relocate_add(Elf_Shdr *sechdrs,
  42                       const char *strtab,
  43                       unsigned int symindex,
  44                       unsigned int relsec,
  45                       struct module *mod);
  46
  47/* Any final processing of module before access.  Return -error or 0. */
  48int module_finalize(const Elf_Ehdr *hdr,
  49                    const Elf_Shdr *sechdrs,
  50                    struct module *mod);
  51
  52/* Any cleanup needed when module leaves. */
  53void module_arch_cleanup(struct module *mod);
  54
  55#endif
  56
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