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