blob: 228a543fcbc5dccd44a298dcedbe9b75b0bfdd42 [file] [log] [blame] [edit]
#ifndef __MODULE_H
#define __MODULE_H
#include <elf.h>
#include <linux/compiler.h>
#include <linux/list.h>
#ifndef MODULE_SYMBOL_PREFIX
#define MODULE_SYMBOL_PREFIX
#endif
#define MODULE_NAME_LEN (64 - sizeof(unsigned long))
#ifdef CONFIG_MODULES
#include <asm/module.h>
struct kernel_symbol
{
unsigned long value;
const char *name;
};
struct module * load_module(void *mod_image, unsigned long len);
/* For every exported symbol, place a struct in the __ksymtab section */
#define __EXPORT_SYMBOL(sym, sec) \
extern typeof(sym) sym; \
static const char __ustrtab_##sym[] \
__attribute__((section("__usymtab_strings"))) \
= MODULE_SYMBOL_PREFIX #sym; \
static const struct kernel_symbol __usymtab_##sym \
__used \
__attribute__((section("__usymtab" sec), unused)) \
= { (unsigned long)&sym, __ustrtab_##sym }
#define EXPORT_SYMBOL(sym) \
__EXPORT_SYMBOL(sym, "")
#define EXPORT_SYMBOL_GPL(sym) \
__EXPORT_SYMBOL(sym, "")
struct module {
/* Unique handle for this module */
char name[MODULE_NAME_LEN];
/* Startup function. */
int (*init)(void);
/* Here is the actual code + data, free'd on unload. */
void *module_core;
/* Arch-specific module values */
struct mod_arch_specific arch;
unsigned long core_size;
struct list_head list;
};
/* Apply the given relocation to the (simplified) ELF. Return -error
or 0. */
int apply_relocate(Elf_Shdr *sechdrs,
const char *strtab,
unsigned int symindex,
unsigned int relsec,
struct module *mod);
/* Apply the given add relocation to the (simplified) ELF. Return
-error or 0 */
int apply_relocate_add(Elf_Shdr *sechdrs,
const char *strtab,
unsigned int symindex,
unsigned int relsec,
struct module *mod);
#else
#define EXPORT_SYMBOL(sym)
#define EXPORT_SYMBOL_GPL(sym)
#endif /* CONFIG_MODULES */
extern struct list_head module_list;
#define for_each_module(m) \
list_for_each_entry(m, &module_list, list)
#endif /* __MODULE_H */