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36 lines
2.3 KiB
PHP
36 lines
2.3 KiB
PHP
;=----------------------------------------------------------------------------=;
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; GNU GPL OS/K ;
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; ;
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; Desc: Multiboot useful functions ;
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; (x86_64 architecture only) ;
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; ;
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; ;
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; Copyright © 2018-2020 The OS/K Team ;
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; ;
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; This file is part of OS/K. ;
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; ;
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; OS/K 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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; OS/K 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 OS/K. If not, see <https://www.gnu.org/licenses/>. ;
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;=----------------------------------------------------------------------------=;
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; ---------------------------------------------------------------------------- ;
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; Multiboot check function to ensure we are launch by GRUB ;
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; ---------------------------------------------------------------------------- ;
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MB_check:
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cmp ecx, MB_GRUB_MAGIC ; The magic number must be in ecx
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jne .no_MB
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ret
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.no_MB:
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mov ax, "01" ; ERROR 01 : No multiboot
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jmp Error
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