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137 lines
5.2 KiB
C
137 lines
5.2 KiB
C
/*
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* Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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/*
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* @OSF_COPYRIGHT@
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*/
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/*
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* Mach Operating System
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* Copyright (c) 1991,1990,1989 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie Mellon
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* the rights to redistribute these changes.
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*/
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/*
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*/
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#ifndef _I386_TSS_H_
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#define _I386_TSS_H_
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#include <stdint.h>
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/*
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* i386 Task State Segment
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*/
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struct i386_tss {
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uint32_t back_link; /* segment number of previous task,
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* if nested */
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uint32_t esp0; /* initial stack pointer ... */
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uint32_t ss0; /* and segment for ring 0 */
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uint32_t esp1; /* initial stack pointer ... */
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uint32_t ss1; /* and segment for ring 1 */
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uint32_t esp2; /* initial stack pointer ... */
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uint32_t ss2; /* and segment for ring 2 */
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uint32_t cr3; /* CR3 - page table directory
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* physical address */
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uint32_t eip;
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uint32_t eflags;
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uint32_t eax;
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uint32_t ecx;
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uint32_t edx;
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uint32_t ebx;
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uint32_t esp; /* current stack pointer */
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uint32_t ebp;
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uint32_t esi;
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uint32_t edi;
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uint32_t es;
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uint32_t cs;
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uint32_t ss; /* current stack segment */
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uint32_t ds;
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uint32_t fs;
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uint32_t gs;
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uint32_t ldt; /* local descriptor table segment */
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uint16_t trace_trap; /* trap on switch to this task */
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uint16_t io_bit_map_offset;
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/* offset to start of IO permission
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* bit map */
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};
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/*
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* Temporary stack used on kernel entry via the sysenter instruction.
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* Its top points on to the PCB save area. It must contain space for
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* a single interrupt stack frame in case of single-stepping over the sysenter.
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* Although this is defined as a 64-bit stack, the space is also used in
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* 32-bit legacy mode. For 64-bit the stack is 16-byte aligned.
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*/
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struct sysenter_stack {
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uint64_t sysestack[64]; /* Space for a 64-bit frame and some */
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uint64_t top; /* Top and pointer to ISS in PCS */
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};
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#pragma pack(4)
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struct x86_64_tss {
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uint32_t reserved1;
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uint64_t rsp0; /* stack pointer for CPL0 */
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uint64_t rsp1; /* stack pointer for CPL1 */
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uint64_t rsp2; /* stack pointer for CPL2 */
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uint32_t reserved2;
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uint32_t reserved3;
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uint64_t ist1; /* interrupt stack table 1 */
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uint64_t ist2; /* interrupt stack table 2 */
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uint64_t ist3; /* interrupt stack table 3 */
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uint64_t ist4; /* interrupt stack table 4 */
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uint64_t ist5; /* interrupt stack table 5 */
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uint64_t ist6; /* interrupt stack table 6 */
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uint64_t ist7; /* interrupt stack table 7 */
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uint32_t reserved4;
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uint32_t reserved5;
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uint16_t reserved6;
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uint16_t io_bit_map_offset;
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/* offset to IO permission bit map */
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};
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#pragma pack()
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#endif /* _I386_TSS_H_ */
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