129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/* dl.h - types and prototypes for loadable module support */
|
|
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2002,2004,2005,2007,2008,2009 Free Software Foundation, Inc.
|
|
*
|
|
* GRUB is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GRUB is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef GRUB_DL_H
|
|
#define GRUB_DL_H 1
|
|
|
|
#include <grub/symbol.h>
|
|
#include <grub/err.h>
|
|
#include <grub/types.h>
|
|
#include <grub/elf.h>
|
|
|
|
#define GRUB_MOD_INIT(name) \
|
|
static void grub_mod_init (grub_dl_t mod __attribute__ ((unused))) __attribute__ ((used)); \
|
|
void grub_##name##_init (void); \
|
|
void \
|
|
grub_##name##_init (void) { grub_mod_init (0); } \
|
|
static void \
|
|
grub_mod_init (grub_dl_t mod __attribute__ ((unused)))
|
|
|
|
#define GRUB_MOD_FINI(name) \
|
|
static void grub_mod_fini (void) __attribute__ ((used)); \
|
|
void grub_##name##_fini (void); \
|
|
void \
|
|
grub_##name##_fini (void) { grub_mod_fini (); } \
|
|
static void \
|
|
grub_mod_fini (void)
|
|
|
|
#ifdef APPLE_CC
|
|
#define GRUB_MOD_NAME(name) \
|
|
static char grub_modname[] __attribute__ ((section ("_modname, _modname"), used)) = #name;
|
|
|
|
#define GRUB_MOD_DEP(name) \
|
|
__asm__ (".section _moddeps, _moddeps\n.asciz \"" #name "\"\n")
|
|
#else
|
|
#define GRUB_MOD_NAME(name) \
|
|
__asm__ (".section .modname\n.asciz \"" #name "\"\n")
|
|
|
|
#define GRUB_MOD_DEP(name) \
|
|
__asm__ (".section .moddeps\n.asciz \"" #name "\"\n")
|
|
#endif
|
|
|
|
struct grub_dl_segment
|
|
{
|
|
struct grub_dl_segment *next;
|
|
void *addr;
|
|
grub_size_t size;
|
|
unsigned section;
|
|
};
|
|
typedef struct grub_dl_segment *grub_dl_segment_t;
|
|
|
|
struct grub_dl;
|
|
|
|
struct grub_dl_dep
|
|
{
|
|
struct grub_dl_dep *next;
|
|
struct grub_dl *mod;
|
|
};
|
|
typedef struct grub_dl_dep *grub_dl_dep_t;
|
|
|
|
struct grub_dl
|
|
{
|
|
char *name;
|
|
int ref_count;
|
|
grub_dl_dep_t dep;
|
|
grub_dl_segment_t segment;
|
|
Elf_Sym *symtab;
|
|
void (*init) (struct grub_dl *mod);
|
|
void (*fini) (void);
|
|
};
|
|
typedef struct grub_dl *grub_dl_t;
|
|
|
|
grub_dl_t EXPORT_FUNC(grub_dl_load_file) (const char *filename);
|
|
grub_dl_t EXPORT_FUNC(grub_dl_load) (const char *name);
|
|
grub_dl_t grub_dl_load_core (void *addr, grub_size_t size);
|
|
int EXPORT_FUNC(grub_dl_unload) (grub_dl_t mod);
|
|
void grub_dl_unload_unneeded (void);
|
|
void grub_dl_unload_all (void);
|
|
#if defined (GRUB_MACHINE_EMU) || defined (GRUB_UTIL)
|
|
#define GRUB_NO_MODULES 1
|
|
#else
|
|
#define GRUB_NO_MODULES 0
|
|
#endif
|
|
#if GRUB_NO_MODULES
|
|
static inline int
|
|
grub_dl_ref (grub_dl_t mod)
|
|
{
|
|
(void) mod;
|
|
return 0;
|
|
}
|
|
static inline int
|
|
grub_dl_unref (grub_dl_t mod)
|
|
{
|
|
(void) mod;
|
|
return 0;
|
|
}
|
|
#else
|
|
int EXPORT_FUNC(grub_dl_ref) (grub_dl_t mod);
|
|
int EXPORT_FUNC(grub_dl_unref) (grub_dl_t mod);
|
|
#endif
|
|
void EXPORT_FUNC(grub_dl_iterate) (int (*hook) (grub_dl_t mod));
|
|
grub_dl_t EXPORT_FUNC(grub_dl_get) (const char *name);
|
|
grub_err_t grub_dl_register_symbol (const char *name, void *addr,
|
|
grub_dl_t mod);
|
|
|
|
grub_err_t grub_arch_dl_check_header (void *ehdr);
|
|
grub_err_t grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr);
|
|
|
|
#if defined (_mips) && ! defined (GRUB_UTIL) && !defined (GRUB_MACHINE_EMU)
|
|
#define GRUB_LINKER_HAVE_INIT 1
|
|
void grub_arch_dl_init_linker (void);
|
|
#endif
|
|
|
|
#endif /* ! GRUB_DL_H */
|