1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * from: @(#)tss.h 5.4 (Berkeley) 1/18/91 35 */ 36 37 #ifndef _MACHINE_TSS_H_ 38 #define _MACHINE_TSS_H_ 1 39 40 /* 41 * amd64 Context Data Type 42 * 43 * The alignment is pretty messed up here due to reuse of the original 32 bit 44 * fields. It might be worth trying to set the tss on a +4 byte offset to 45 * make the 64 bit fields aligned in practice. 46 */ 47 struct amd64tss { 48 u_int32_t tss_rsvd0; 49 u_int64_t tss_rsp0 __packed; /* kernel stack pointer ring 0 */ 50 u_int64_t tss_rsp1 __packed; /* kernel stack pointer ring 1 */ 51 u_int64_t tss_rsp2 __packed; /* kernel stack pointer ring 2 */ 52 u_int32_t tss_rsvd1; 53 u_int32_t tss_rsvd2; 54 u_int64_t tss_ist1 __packed; /* Interrupt stack table 1 */ 55 u_int64_t tss_ist2 __packed; /* Interrupt stack table 2 */ 56 u_int64_t tss_ist3 __packed; /* Interrupt stack table 3 */ 57 u_int64_t tss_ist4 __packed; /* Interrupt stack table 4 */ 58 u_int64_t tss_ist5 __packed; /* Interrupt stack table 5 */ 59 u_int64_t tss_ist6 __packed; /* Interrupt stack table 6 */ 60 u_int64_t tss_ist7 __packed; /* Interrupt stack table 7 */ 61 u_int32_t tss_rsvd3; 62 u_int32_t tss_rsvd4; 63 u_int16_t tss_rsvd5; 64 u_int16_t tss_iobase; /* io bitmap offset */ 65 }; 66 67 #endif /* _MACHINE_TSS_H_ */ 68