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1.1 ! root 1: /* ! 2: * Copyright (c) 1995-1994 The University of Utah and ! 3: * the Computer Systems Laboratory at the University of Utah (CSL). ! 4: * All rights reserved. ! 5: * ! 6: * Permission to use, copy, modify and distribute this software is hereby ! 7: * granted provided that (1) source code retains these copyright, permission, ! 8: * and disclaimer notices, and (2) redistributions including binaries ! 9: * reproduce the notices in supporting documentation, and (3) all advertising ! 10: * materials mentioning features or use of this software display the following ! 11: * acknowledgement: ``This product includes software developed by the ! 12: * Computer Systems Laboratory at the University of Utah.'' ! 13: * ! 14: * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS ! 15: * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF ! 16: * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. ! 17: * ! 18: * CSL requests users of this software to return to [email protected] any ! 19: * improvements that they make and grant CSL redistribution rights. ! 20: * ! 21: * Author: Bryan Ford, University of Utah CSL ! 22: */ ! 23: ! 24: #include <mach/machine/tss.h> ! 25: #include <mach/machine/proc_reg.h> ! 26: ! 27: #include "cpu.h" ! 28: ! 29: #ifdef ENABLE_KERNEL_TSS ! 30: ! 31: void ! 32: cpu_tss_init(struct cpu *cpu) ! 33: { ! 34: /* Only initialize once. */ ! 35: if (!cpu->tables.tss.ss0) ! 36: { ! 37: /* Initialize the master TSS. */ ! 38: cpu->tables.tss.ss0 = KERNEL_DS; ! 39: cpu->tables.tss.esp0 = get_esp(); /* only temporary */ ! 40: cpu->tables.tss.io_bit_map_offset = sizeof(cpu->tables.tss); ! 41: } ! 42: } ! 43: ! 44: #endif ! 45:
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