120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2000 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@
|
|
*/
|
|
/*
|
|
* Copyright (c) 1992 NeXT Computer, Inc.
|
|
*
|
|
* Intel386 Family: Task State Segment.
|
|
*
|
|
* HISTORY
|
|
*
|
|
* 29 March 1992 ? at NeXT
|
|
* Created.
|
|
*/
|
|
|
|
#include <architecture/i386/sel.h>
|
|
|
|
/*
|
|
* Task State segment.
|
|
*/
|
|
|
|
typedef struct tss {
|
|
sel_t oldtss;
|
|
unsigned int :0;
|
|
unsigned int esp0;
|
|
sel_t ss0;
|
|
unsigned int :0;
|
|
unsigned int esp1;
|
|
sel_t ss1;
|
|
unsigned int :0;
|
|
unsigned int esp2;
|
|
sel_t ss2;
|
|
unsigned int :0;
|
|
unsigned int cr3;
|
|
unsigned int eip;
|
|
unsigned int eflags;
|
|
unsigned int eax;
|
|
unsigned int ecx;
|
|
unsigned int edx;
|
|
unsigned int ebx;
|
|
unsigned int esp;
|
|
unsigned int ebp;
|
|
unsigned int esi;
|
|
unsigned int edi;
|
|
sel_t es;
|
|
unsigned int :0;
|
|
sel_t cs;
|
|
unsigned int :0;
|
|
sel_t ss;
|
|
unsigned int :0;
|
|
sel_t ds;
|
|
unsigned int :0;
|
|
sel_t fs;
|
|
unsigned int :0;
|
|
sel_t gs;
|
|
unsigned int :0;
|
|
sel_t ldt;
|
|
unsigned int :0;
|
|
unsigned int t :1,
|
|
:15,
|
|
io_bmap :16;
|
|
} tss_t;
|
|
|
|
#define TSS_SIZE(n) (sizeof (struct tss) + (n))
|
|
|
|
/*
|
|
* Task State segment descriptor.
|
|
*/
|
|
|
|
typedef struct tss_desc {
|
|
unsigned short limit00;
|
|
unsigned short base00;
|
|
unsigned char base16;
|
|
unsigned char type :5,
|
|
#define DESC_TSS 0x09
|
|
dpl :2,
|
|
present :1;
|
|
unsigned char limit16 :4,
|
|
:3,
|
|
granular:1;
|
|
unsigned char base24;
|
|
} tss_desc_t;
|
|
|
|
/*
|
|
* Task gate descriptor.
|
|
*/
|
|
|
|
typedef struct task_gate {
|
|
unsigned short :16;
|
|
sel_t tss;
|
|
unsigned int :8,
|
|
type :5,
|
|
#define DESC_TASK_GATE 0x05
|
|
dpl :2,
|
|
present :1,
|
|
:0;
|
|
} task_gate_t;
|