/* 
 * Copyright 2010 Stefan Lankes, Chair for Operating Systems,
 *                               RWTH Aachen University
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * This file is part of MetalSVM.
 */

/**
 * @author Stefan Lankes
 * @file arch/x86/include/asm/tss.h
 * @brief Task state segment structure definition
 */

#ifndef __ARCH_TSS_H__
#define __ARCH_TSS_H__

#include <metalsvm/stddef.h>

#ifdef __cplusplus
extern "C" {
#endif

/** @brief The tast state segment structure
 */
typedef struct {
#ifdef CONFIG_X86_32
	uint16_t	backlink, __blh;
	uint32_t	esp0;
	uint16_t	ss0, __ss0h;
	uint32_t	esp1;	
	uint16_t	ss1, __ss1h;
	uint32_t	esp2;
	uint16_t	ss2, __ss2h;
	uint32_t	cr3;
	uint32_t	eip;
	uint32_t	eflags;
	uint32_t	eax, ecx, edx, ebx;
	uint32_t	esp, ebp, esi, edi;
	uint16_t	es, __esh;
	uint16_t	cs, __csh;
	uint16_t	ss, __ssh;
	uint16_t	ds, __dsh;
	uint16_t	fs, __fsh;
	uint16_t	gs, __gsh;
	uint16_t	ldt, __ldth;
	uint16_t	trace, bitmap;
#endif
#ifdef CONFIG_X86_64
	uint16_t	res0, res1;	// reserved entries
	uint64_t	rsp0;
	uint64_t	rsp1;
	uint64_t	rsp2;
	uint32_t	res2, res3;	// reserved entries
	uint64_t	ist_rsp1;
	uint64_t	ist_rsp2;
	uint64_t	ist_rsp3;
	uint64_t	ist_rsp4;
	uint64_t	ist_rsp5;
	uint64_t	ist_rsp6;
	uint64_t	ist_rsp7;
	uint32_t	res4, res5;	// reserved entries
	uint16_t	res6, bitmap;
#endif
} __attribute__ ((packed)) tss_t;

#ifdef __cplusplus
}
#endif

#endif