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. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * from: @(#)tss.h 5.4 (Berkeley) 1/18/91 33 */ 34 35 #ifndef _MACHINE_TSS_H_ 36 #define _MACHINE_TSS_H_ 1 37 38 /* 39 * amd64 Context Data Type 40 * 41 * The alignment is pretty messed up here due to reuse of the original 32 bit 42 * fields. It might be worth trying to set the tss on a +4 byte offset to 43 * make the 64 bit fields aligned in practice. 44 */ 45 struct amd64tss { 46 u_int32_t tss_rsvd0; 47 u_int64_t tss_rsp0 __packed; /* kernel stack pointer ring 0 */ 48 u_int64_t tss_rsp1 __packed; /* kernel stack pointer ring 1 */ 49 u_int64_t tss_rsp2 __packed; /* kernel stack pointer ring 2 */ 50 u_int32_t tss_rsvd1; 51 u_int32_t tss_rsvd2; 52 u_int64_t tss_ist1 __packed; /* Interrupt stack table 1 */ 53 u_int64_t tss_ist2 __packed; /* Interrupt stack table 2 */ 54 u_int64_t tss_ist3 __packed; /* Interrupt stack table 3 */ 55 u_int64_t tss_ist4 __packed; /* Interrupt stack table 4 */ 56 u_int64_t tss_ist5 __packed; /* Interrupt stack table 5 */ 57 u_int64_t tss_ist6 __packed; /* Interrupt stack table 6 */ 58 u_int64_t tss_ist7 __packed; /* Interrupt stack table 7 */ 59 u_int32_t tss_rsvd3; 60 u_int32_t tss_rsvd4; 61 u_int16_t tss_rsvd5; 62 u_int16_t tss_iobase; /* io bitmap offset */ 63 }; 64 65 #ifdef _KERNEL 66 extern struct amd64tss common_tss[]; 67 #endif 68 69 #endif /* _MACHINE_TSS_H_ */ 70