1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)tss.h 5.4 (Berkeley) 1/18/91 37 * $FreeBSD$ 38 */ 39 40 #ifndef _MACHINE_TSS_H_ 41 #define _MACHINE_TSS_H_ 1 42 43 /* 44 * amd64 Context Data Type 45 * 46 * The alignment is pretty messed up here due to reuse of the original 32 bit 47 * fields. It might be worth trying to set the tss on a +4 byte offset to 48 * make the 64 bit fields aligned in practice. 49 */ 50 struct amd64tss { 51 u_int32_t tss_rsvd0; 52 u_int64_t tss_rsp0 __packed; /* kernel stack pointer ring 0 */ 53 u_int64_t tss_rsp1 __packed; /* kernel stack pointer ring 1 */ 54 u_int64_t tss_rsp2 __packed; /* kernel stack pointer ring 2 */ 55 u_int32_t tss_rsvd1; 56 u_int32_t tss_rsvd2; 57 u_int32_t tss_rsvd3; 58 u_int64_t tss_ist1 __packed; /* Interrupt stack table 1 */ 59 u_int64_t tss_ist2 __packed; /* Interrupt stack table 2 */ 60 u_int64_t tss_ist3 __packed; /* Interrupt stack table 3 */ 61 u_int64_t tss_ist4 __packed; /* Interrupt stack table 4 */ 62 u_int64_t tss_ist5 __packed; /* Interrupt stack table 5 */ 63 u_int64_t tss_ist6 __packed; /* Interrupt stack table 6 */ 64 u_int64_t tss_ist7 __packed; /* Interrupt stack table 7 */ 65 u_int32_t tss_rsvd4; 66 u_int32_t tss_rsvd5; 67 u_int16_t tss_rsvd6; 68 u_int16_t tss_iobase; /* io bitmap offset */ 69 }; 70 71 #ifdef _KERNEL 72 extern struct amd64tss common_tss; 73 #endif 74 75 #endif /* _MACHINE_TSS_H_ */ 76