64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/*
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* PUPA -- Preliminary Universal Programming Architecture for GRUB
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* Copyright (C) 2002,2003 Free Software Foundation, Inc.
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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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#include <pupa/loader.h>
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#include <pupa/misc.h>
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#include <pupa/mm.h>
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#include <pupa/err.h>
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static pupa_err_t (*pupa_loader_boot_func) (void);
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static pupa_err_t (*pupa_loader_unload_func) (void);
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static int pupa_loader_loaded;
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void
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pupa_loader_set (pupa_err_t (*boot) (void),
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pupa_err_t (*unload) (void))
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{
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if (pupa_loader_loaded && pupa_loader_unload_func)
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pupa_loader_unload_func ();
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pupa_loader_boot_func = boot;
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pupa_loader_unload_func = unload;
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pupa_loader_loaded = 1;
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}
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void
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pupa_loader_unset(void)
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{
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if (pupa_loader_loaded && pupa_loader_unload_func)
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pupa_loader_unload_func ();
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pupa_loader_boot_func = 0;
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pupa_loader_unload_func = 0;
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pupa_loader_loaded = 0;
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}
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pupa_err_t
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pupa_loader_boot (void)
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{
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if (! pupa_loader_loaded)
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return pupa_error (PUPA_ERR_NO_KERNEL, "no loaded kernel");
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return (pupa_loader_boot_func) ();
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}
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