| /*- |
| * Copyright (c) 1990 The Regents of the University of California. |
| * All rights reserved. |
| * |
| * This code is derived from software contributed to Berkeley by |
| * William Jolitz. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * from: @(#)tss.h 5.4 (Berkeley) 1/18/91 |
| * $FreeBSD$ |
| */ |
| |
| #ifndef _BSD_MACHINE_TSS_H_ |
| #define _BSD_MACHINE_TSS_H_ 1 |
| |
| /* |
| * Intel 386 Context Data Type |
| */ |
| |
| struct i386tss { |
| int tss_link; /* actually 16 bits: top 16 bits must be zero */ |
| int tss_esp0; /* kernel stack pointer privilege level 0 */ |
| int tss_ss0; /* actually 16 bits: top 16 bits must be zero */ |
| int tss_esp1; /* kernel stack pointer privilege level 1 */ |
| int tss_ss1; /* actually 16 bits: top 16 bits must be zero */ |
| int tss_esp2; /* kernel stack pointer privilege level 2 */ |
| int tss_ss2; /* actually 16 bits: top 16 bits must be zero */ |
| int tss_cr3; /* page table directory */ |
| int tss_eip; /* program counter */ |
| int tss_eflags; /* program status longword */ |
| int tss_eax; |
| int tss_ecx; |
| int tss_edx; |
| int tss_ebx; |
| int tss_esp; /* user stack pointer */ |
| int tss_ebp; /* user frame pointer */ |
| int tss_esi; |
| int tss_edi; |
| int tss_es; /* actually 16 bits: top 16 bits must be zero */ |
| int tss_cs; /* actually 16 bits: top 16 bits must be zero */ |
| int tss_ss; /* actually 16 bits: top 16 bits must be zero */ |
| int tss_ds; /* actually 16 bits: top 16 bits must be zero */ |
| int tss_fs; /* actually 16 bits: top 16 bits must be zero */ |
| int tss_gs; /* actually 16 bits: top 16 bits must be zero */ |
| int tss_ldt; /* actually 16 bits: top 16 bits must be zero */ |
| int tss_ioopt; /* options & io offset bitmap: currently zero */ |
| /* XXX unimplemented .. i/o permission bitmap */ |
| }; |
| |
| #endif /* _BSD_MACHINE_TSS_H_ */ |
