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Diffstat (limited to 'i386/util/gdt_sels.h')
| -rw-r--r-- | i386/util/gdt_sels.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/i386/util/gdt_sels.h b/i386/util/gdt_sels.h new file mode 100644 index 0000000..e9b33fe --- /dev/null +++ b/i386/util/gdt_sels.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 1995-1994 The University of Utah and + * the Computer Systems Laboratory at the University of Utah (CSL). + * All rights reserved. + * + * Permission to use, copy, modify and distribute this software is hereby + * granted provided that (1) source code retains these copyright, permission, + * and disclaimer notices, and (2) redistributions including binaries + * reproduce the notices in supporting documentation, and (3) all advertising + * materials mentioning features or use of this software display the following + * acknowledgement: ``This product includes software developed by the + * Computer Systems Laboratory at the University of Utah.'' + * + * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS + * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF + * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * CSL requests users of this software to return to csl-dist@cs.utah.edu any + * improvements that they make and grant CSL redistribution rights. + * + * Author: Bryan Ford, University of Utah CSL + */ + +#include "config.h" + +/* Kernel segment descriptors (32-bit flat address space). */ +gdt_sel(KERNEL_CS) +gdt_sel(KERNEL_DS) + +/* Corresponding 16-bit descriptors for protected-mode entry and exit. */ +gdt_sel(KERNEL_16_CS) +gdt_sel(KERNEL_16_DS) + +/* Code and data segments that always maps directly to flat, linear memory. */ +gdt_sel(LINEAR_CS) +gdt_sel(LINEAR_DS) + +/* Standard LDT and TSS descriptors. */ +#ifdef ENABLE_KERNEL_LDT +gdt_sel(KERNEL_LDT) +#endif +#ifdef ENABLE_KERNEL_TSS +gdt_sel(KERNEL_TSS) +#endif + |