87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/* dl.h - types and prototypes for loadable module support */
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/*
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* PUPA -- Preliminary Universal Programming Architecture for GRUB
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* Copyright (C) 2002 Yoshinori K. Okuji <okuji@enbug.org>
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*
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* PUPA 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 PUPA; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef PUPA_DL_H
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#define PUPA_DL_H 1
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#include <pupa/symbol.h>
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#include <pupa/err.h>
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#include <pupa/types.h>
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#define PUPA_MOD_INIT \
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static void pupa_mod_init (void) __attribute__ ((unused)); \
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static void \
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pupa_mod_init (void)
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#define PUPA_MOD_FINI \
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static void pupa_mod_fini (void) __attribute__ ((unused)); \
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static void \
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pupa_mod_fini (void)
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#define PUPA_MOD_NAME(name) \
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__asm__ (".section .modname,\"S\"\n.string \"" #name "\"\n.previous")
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#define PUPA_MOD_DEP(name) \
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__asm__ (".section .moddeps,\"S\"\n.string \"" #name "\"\n.previous")
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struct pupa_dl_segment
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{
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struct pupa_dl_segment *next;
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void *addr;
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pupa_size_t size;
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unsigned section;
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};
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typedef struct pupa_dl_segment *pupa_dl_segment_t;
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struct pupa_dl;
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struct pupa_dl_dep
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{
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struct pupa_dl_dep *next;
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struct pupa_dl *mod;
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};
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typedef struct pupa_dl_dep *pupa_dl_dep_t;
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struct pupa_dl
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{
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char *name;
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int ref_count;
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pupa_dl_dep_t dep;
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pupa_dl_segment_t segment;
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void (*init) (void);
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void (*fini) (void);
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};
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typedef struct pupa_dl *pupa_dl_t;
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pupa_dl_t EXPORT_FUNC(pupa_dl_load_file) (const char *filename);
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pupa_dl_t EXPORT_FUNC(pupa_dl_load) (const char *name);
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pupa_dl_t pupa_dl_load_core (void *addr, pupa_size_t size);
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void EXPORT_FUNC(pupa_dl_unload) (pupa_dl_t mod);
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pupa_dl_t EXPORT_FUNC(pupa_dl_get) (const char *name);
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pupa_err_t EXPORT_FUNC(pupa_dl_register_symbol) (const char *name, void *addr,
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pupa_dl_t mod);
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void *EXPORT_FUNC(pupa_dl_resolve_symbol) (const char *name);
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void pupa_dl_init (const char *dir);
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int pupa_arch_dl_check_header (void *ehdr, pupa_size_t size);
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pupa_err_t pupa_arch_dl_relocate_symbols (pupa_dl_t mod, void *ehdr);
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#endif /* ! PUPA_DL_H */
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