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